the purpose and the performance of Natural rubber
Health and natural rubber glue temperature glass of -72 ℃, plastic flow temperature 130 ℃, the beginning of decomposition temperature 200 ℃, intense decomposition temperature 270 ℃. When natural rubber vulcanization, the increase in Tg, it will not happen again flow.
Natural rubber flexibility
Rubber and its cross-linking density is not too high vulcanizate flexibility is high. For example, 0-100 ℃, flexibility in the back between 50-85 ℃, the modulus of elasticity of steel is only 1 / 3000, the elongation up to 1000 percent, stretching to 350%, after the permanent back Deformation of only 15% of natural rubber flexibility relatively high, second only to the common rubber in butadiene rubber.
The strength of natural rubber
In the elastic material, natural rubber, raw rubber, rubber, rubber vulcanization of higher intensity. Vulcanization of rubber is not known as the tensile strength of Green's strength, natural rubber Green strength of up to 1.4 ~ 2.5Mpa, the appropriate strength for the green rubber molding process is necessary. Natural rubber has a higher tear strength, up to 98kN / m, its wear resistance is also good. Natural rubber high mechanical strength because it is self-reinforcing rubber, when the time will stretch along the chain molecules form a crystal orientation of the direction of stress.
The electrical properties of natural rubber
Natural rubber non-polar material is a good insulating material. When natural rubber vulcanization, as a result of the introduction of polar factors, such as sulfur, to promote, etc., so that the insulation performance.
Natural rubber-resistant properties of media
Natural rubber is a non-polar substances, which dissolve in non-polar and non-polar solvent oil. Cyclohexane intolerance natural rubber, gasoline, benzene, and other media, not vulcanized rubber in the above-mentioned medium dissolved, the vulcanized rubber is swelling. Natural rubber is not soluble in the polar acetone, ethanol, not soluble in water, 10% hydrofluoric acid-resistant, 20% of hydrochloric acid, sulfuric acid 30%, 50% sodium hydroxide and so on.
The main use of natural rubber
Natural rubber for its highly flexible and sound insulation, plastic, impermeable trap, tensile and wear characteristics, widely used in industry, agriculture, defense, communications, transportation, machine building, medicine and public health in the field And daily life, and so on, such as transportation, with the tire; industry with the transport belt, belt, a variety of ring; of medical gloves, vascular lose; used in the daily life of the rubber shoes, raincoats, are Nuanshui Dai The main raw materials for rubber manufacturers, defense of the use of aircraft, artillery, tanks, even the most advanced technology in the field of rockets, satellites, spacecraft, space shuttles have to be a lot of rubber parts
Nov 9, 2008
How to make foam rubber tires?
EPDM rubber foam with a high degree of chemical stability, excellent insulation properties, anti-aging properties, and good mechanical strength. Can also choose to add side of the rubber foam approach to the realization of foam products. As for the prices of products according to the requirements of the appropriate election materials to achieve high-quality, high-performance (profit). Depends on the processing equipment requirements, the rolling type, type of die-casting, plastic injection type. Die, steel, steel CALCINED, cast aluminum, such as the bronze, according to the specific needs of their clientele.
Nov 1, 2008
Thailand to be the next six months to cut rubber production 50%
The world's largest rubber producers - Thailand's Ministry of Agriculture Monday said that in order to protect the price of rubber, Thailand from October 2008 start of the next 6 months, the reduction of 700,000 tons of rubber production.
Thailand Ministry of Agriculture in charge of rubber Saenkaew Affairs Minister, said Thailand planned from October 2008 to March 2009 period to cut 50% of rubber production and encourage farmers to reduce the tapping. It is understood that 50% of the production plan is to Thailand from October 2007 to March 2008 during the production of 1,400,000 tons on the basis of the decision. The output is equivalent to the size of Thailand in 2008, about 3,100,000 tons forecast production of around 23%. Thailand's rubber production in 2007 to 3,000,000 tons.
Saenkaew said that the Thai government's goal is to reduce the 25-year-old more than a year old trees covering an area of 64,000 hectares at present to 32,000 ha per year. The Thai government to encourage farmers planting new trees and tree felling.
Saenkaew said that as a reduction in the supply of rubber part of the plan, from October 2008 to March 2009, Thailand will also reduce the domestic spot rubber trading center of the trading day. Day trading is expected to reduce the 2-3 days a week, in response to the drop in supply.
At present, the international benchmark --- Thai RSS3 rubber spot rubber prices Monday reported that 1.85 U.S. dollars per kilogram, while in July this year, the price had hit 56-year record high of 3.25 U.S. dollars. In the face of the global financial crisis, Thailand, Malaysia, Indonesia and rubber big powers are under attack, and cautious consumer sentiment.
The world's largest rubber producers - Thailand's Ministry of Agriculture Monday said that in order to protect the price of rubber, Thailand from October 2008 start of the next 6 months, the reduction of 700,000 tons of rubber production.
Thailand Ministry of Agriculture in charge of rubber Saenkaew Affairs Minister, said Thailand planned from October 2008 to March 2009 period to cut 50% of rubber production and encourage farmers to reduce the tapping. It is understood that 50% of the production plan is to Thailand from October 2007 to March 2008 during the production of 1,400,000 tons on the basis of the decision. The output is equivalent to the size of Thailand in 2008, about 3,100,000 tons forecast production of around 23%. Thailand's rubber production in 2007 to 3,000,000 tons.
Saenkaew said that the Thai government's goal is to reduce the 25-year-old more than a year old trees covering an area of 64,000 hectares at present to 32,000 ha per year. The Thai government to encourage farmers planting new trees and tree felling.
Saenkaew said that as a reduction in the supply of rubber part of the plan, from October 2008 to March 2009, Thailand will also reduce the domestic spot rubber trading center of the trading day. Day trading is expected to reduce the 2-3 days a week, in response to the drop in supply.
At present, the international benchmark --- Thai RSS3 rubber spot rubber prices Monday reported that 1.85 U.S. dollars per kilogram, while in July this year, the price had hit 56-year record high of 3.25 U.S. dollars. In the face of the global financial crisis, Thailand, Malaysia, Indonesia and rubber big powers are under attack, and cautious consumer sentiment.
Actively respond to ethylene industry downturn cycle
According to authoritative statistics agency predicted that the 2010 World ethylene production capacity will reach 155,000,000 tons, from 2006 to 2010 the average annual growth rate of 6.8 percent; demand will reach 133,000,000 tons / year with an average annual growth rate of 4.9 percent. Due to a large number of new devices will be 2009 to 2010, together with the development of the petrochemical industry's cyclical characteristics of the ethylene industry will inevitably downward into the channel, in 2010 the ethylene plant operating rate to fall to 85%. At the same time, the world's ethylene industry is stepping up its focus to Asia and the Middle East shift to large-scale ethylene plant to continue to develop in the direction of raw materials showed the trend of diversification.
At present, China has become the world's second largest producer of ethylene, ethylene single device the size of an average of over 454,000 tons / year, the market is very competitive. Experts point out that, in the face of the industry cycle downturn, China's ethylene industry needs to rely on scientific and technological progress, vigorously promote the development of ethylene technology and equipment, advanced technology and equipment, do a good job in the new building plant and the technical transformation of existing devices, Lower investment costs and improve the skill level of ethylene plant; integrated refining and give full play to the advantages of ethylene raw materials optimization; to take effective measures to conscientiously do a good job in saving energy and reducing consumption and long-period operation; do a good job in cracking the use of the by-products to enhance the value of by-products Strive to improve China's ethylene industry's competitiveness.
According to authoritative statistics agency predicted that the 2010 World ethylene production capacity will reach 155,000,000 tons, from 2006 to 2010 the average annual growth rate of 6.8 percent; demand will reach 133,000,000 tons / year with an average annual growth rate of 4.9 percent. Due to a large number of new devices will be 2009 to 2010, together with the development of the petrochemical industry's cyclical characteristics of the ethylene industry will inevitably downward into the channel, in 2010 the ethylene plant operating rate to fall to 85%. At the same time, the world's ethylene industry is stepping up its focus to Asia and the Middle East shift to large-scale ethylene plant to continue to develop in the direction of raw materials showed the trend of diversification.
At present, China has become the world's second largest producer of ethylene, ethylene single device the size of an average of over 454,000 tons / year, the market is very competitive. Experts point out that, in the face of the industry cycle downturn, China's ethylene industry needs to rely on scientific and technological progress, vigorously promote the development of ethylene technology and equipment, advanced technology and equipment, do a good job in the new building plant and the technical transformation of existing devices, Lower investment costs and improve the skill level of ethylene plant; integrated refining and give full play to the advantages of ethylene raw materials optimization; to take effective measures to conscientiously do a good job in saving energy and reducing consumption and long-period operation; do a good job in cracking the use of the by-products to enhance the value of by-products Strive to improve China's ethylene industry's competitiveness.
Yee-gum maker breach of contract negotiations after-effect storm remains to be seen
Following the breach of contract after the storm swept through rubber market in the near future on how to deal with the buyers of non-payment of goods, the sanctions for breach of contract lose the trust of Chinese buyers into the market that the focus of the heat. On the 24th of this month coincides with Malaysia in rubber will be held in Kuala Lumpur, Malaysia, it's from Thailand, Malaysia, Indonesia, the three major rubber producing countries and major trading nations of the Singapore Chamber of Commerce Poly a plastic in the exchange market as a whole at the same time a breach of contract , Breach of contract to explore measures to solve the crisis of the next step.
The default crisis, due to start in July's market drop, especially since the National Day vacation almost in a straight line down the market fell into the water. By the financial crisis triggered by falling commodity prices in the rubber market can be fully reflected, since the end of September, set apart from cargo quote 2800 U.S. dollars / ton drop from the current 1800 U.S. dollars / ton, less than one-third decline in January One of the much higher than the 10-20% of the contract deposit ratio, making buyers hesitate to take some of the default mode in order to stop.
It was part of the supplier, according to the current Chinese buyers refused to buy the performance of the quantity of goods has more than 10,000 tons, which are sourced from Thailand, Indonesia and Malaysia and other major rubber producing countries. Some of the lower reaches of large-scale acts of breach of contract factories, but also make the Southeast Asian suppliers to domestic buyers have serious doubts about the integrity.
South-East Asia are forced to rubber began to seek to safeguard their own interests. Malaysia's annual meeting, the plastic will have to exchange Chinese breach of the list of buyers, with a view to future trade alert. But whether or not to introduce sanctions to be truly effective, the majority of operators who hold conservative views.
Industry, the current buyer's breach of the collective, which is fundamental for the development of a contract for the sale when buyers pay less bound by the performance. At present, imports of rubber contract payment terms, the buyer is the basic conclusion of the contract, the first wire deposit a certain percentage (the ratio for more than 10-15%, some 30%), and the remaining amount of the contract through the acceptance letters of credit or money order to pay Section. Chinese buyers because of limited capital, with most of the current Acceptance mainly to take only a few letters of credit practices. Acceptance of a lack of bank credit guarantees, if market prices fell more than the ratio of deposit, buyers tend to refuse acceptance, resulting in a completely passive operation of the seller. According to the Trade and easy to understand, has taken a number of high-pay letter of credit or deposit of the contract, the performance is significantly better, plastic business interests are better protected.
But can improve through the implementation of the letter of credit deposit ratio, or to protect the buyer to pay the normal performance? It has been easy to trade on the part of the investigation of the industry, the industry generally more conservative attitude. High deposit or letter of credit for the buyer to pay up more money, credit higher in the current domestic downstream plants in general are facing slow tire sales, capital of the tense backdrop, the practice is quite difficult in the short term is bound to cause China to buy House opposition and resistance. In addition, the effective implementation of the above methods depends on the solidarity of the Group of the seller, once part of the glue business for the customer to relax the terms for China, is likely to lead to further industry-wide return to their own state.
Industry, said the market from a realistic point of view, self-adhesive's more realistic. It is reported that some of the glue will be adjusted according to their Chinese customers for sales strategy, such as customer ranking, respectively, to take a different mode of cooperation for the exchange at the black customers by charging a higher deposit to avoid risks; for breach of contract Storm faith in the performance of the client, follow the pre-deposit ratio of 10-15%, reduce the capital occupied by the buyer.
Malaysia's annual meeting, the seller is a group that in the current crisis in breach of China's first exchange of the General Assembly. In the absence of a strong coalition of interests, the market for the General Assembly's ability to put effective solutions to the crisis, will continue to take wait-and-see attitude.
Following the breach of contract after the storm swept through rubber market in the near future on how to deal with the buyers of non-payment of goods, the sanctions for breach of contract lose the trust of Chinese buyers into the market that the focus of the heat. On the 24th of this month coincides with Malaysia in rubber will be held in Kuala Lumpur, Malaysia, it's from Thailand, Malaysia, Indonesia, the three major rubber producing countries and major trading nations of the Singapore Chamber of Commerce Poly a plastic in the exchange market as a whole at the same time a breach of contract , Breach of contract to explore measures to solve the crisis of the next step.
The default crisis, due to start in July's market drop, especially since the National Day vacation almost in a straight line down the market fell into the water. By the financial crisis triggered by falling commodity prices in the rubber market can be fully reflected, since the end of September, set apart from cargo quote 2800 U.S. dollars / ton drop from the current 1800 U.S. dollars / ton, less than one-third decline in January One of the much higher than the 10-20% of the contract deposit ratio, making buyers hesitate to take some of the default mode in order to stop.
It was part of the supplier, according to the current Chinese buyers refused to buy the performance of the quantity of goods has more than 10,000 tons, which are sourced from Thailand, Indonesia and Malaysia and other major rubber producing countries. Some of the lower reaches of large-scale acts of breach of contract factories, but also make the Southeast Asian suppliers to domestic buyers have serious doubts about the integrity.
South-East Asia are forced to rubber began to seek to safeguard their own interests. Malaysia's annual meeting, the plastic will have to exchange Chinese breach of the list of buyers, with a view to future trade alert. But whether or not to introduce sanctions to be truly effective, the majority of operators who hold conservative views.
Industry, the current buyer's breach of the collective, which is fundamental for the development of a contract for the sale when buyers pay less bound by the performance. At present, imports of rubber contract payment terms, the buyer is the basic conclusion of the contract, the first wire deposit a certain percentage (the ratio for more than 10-15%, some 30%), and the remaining amount of the contract through the acceptance letters of credit or money order to pay Section. Chinese buyers because of limited capital, with most of the current Acceptance mainly to take only a few letters of credit practices. Acceptance of a lack of bank credit guarantees, if market prices fell more than the ratio of deposit, buyers tend to refuse acceptance, resulting in a completely passive operation of the seller. According to the Trade and easy to understand, has taken a number of high-pay letter of credit or deposit of the contract, the performance is significantly better, plastic business interests are better protected.
But can improve through the implementation of the letter of credit deposit ratio, or to protect the buyer to pay the normal performance? It has been easy to trade on the part of the investigation of the industry, the industry generally more conservative attitude. High deposit or letter of credit for the buyer to pay up more money, credit higher in the current domestic downstream plants in general are facing slow tire sales, capital of the tense backdrop, the practice is quite difficult in the short term is bound to cause China to buy House opposition and resistance. In addition, the effective implementation of the above methods depends on the solidarity of the Group of the seller, once part of the glue business for the customer to relax the terms for China, is likely to lead to further industry-wide return to their own state.
Industry, said the market from a realistic point of view, self-adhesive's more realistic. It is reported that some of the glue will be adjusted according to their Chinese customers for sales strategy, such as customer ranking, respectively, to take a different mode of cooperation for the exchange at the black customers by charging a higher deposit to avoid risks; for breach of contract Storm faith in the performance of the client, follow the pre-deposit ratio of 10-15%, reduce the capital occupied by the buyer.
Malaysia's annual meeting, the seller is a group that in the current crisis in breach of China's first exchange of the General Assembly. In the absence of a strong coalition of interests, the market for the General Assembly's ability to put effective solutions to the crisis, will continue to take wait-and-see attitude.
Matai and India agreed to the three countries to develop export of rubber under the limit
It is reported that a few days ago in Indonesia, Malaysia and Thailand, the three countries agreed that the minimum export price of rubber per kg to 1.6 U.S. dollars to develop, such as rubber prices per kilogram in the United States below 1.6 U.S. dollars, the countries will be reduced by 10% of exports.
It is reported that a few days ago in Indonesia, Malaysia and Thailand, the three countries agreed that the minimum export price of rubber per kg to 1.6 U.S. dollars to develop, such as rubber prices per kilogram in the United States below 1.6 U.S. dollars, the countries will be reduced by 10% of exports.
Vietnam rubber business inventories as a result of increased rubber prices
Rubber prices fell sharply in the near future, as a result of higher than the cost price, the Vietnam Rubber increase in business inventories.
October 22, Vietnam SVR rubber and rubber RSS from 57,000,000 Shield / ton fell quickly to shield 27,000,000 / tonne, many companies inventory backlog.
It is reported that Vietnam's rubber industry estimates the average cost of harvesting rubber resin million for the 2800-3000 Shield / ton. As of October 14, the last one month of Mong Cai market price of rubber fell to 27,000,000 Shield / ton, no one to buy. Prior to that, because of lower prices, rubber goods companies cover Hard Trading in a Dream, hoping to like in October 2007, customers need to purchase rubber, stocks of all kinds, prices. Now, the cost is higher than the sales price, business-to-sales have been indifferent, each of the stocks of small companies have 400-500 tons of rubber, rubber stocks of large enterprises in the 1000-2000 tonnes.
Vietnam Rubber Association of the Secretary-General Cui-hua Chen's view, usually with the rubber price rise in international oil prices, high crude oil prices rose to 140 U.S. dollars / barrel, the fluctuation range to reach 65-80 dollars, so the low price of rubber mixed by the world's favorite . Now, the financial crisis in the United States and Europe, economic recession, the Vietnam Rubber season (September to December) the supply of natural rubber in a rapid increase in the fourth quarter. These factors combined, resulting in rubber prices.
Vietnam Rubber Industry Group, Le Quang-chun, general manager of the Vietnamese rubber industry remains optimistic. He believes that the export prices, and rubber plantation industry is still a successful season. Group rubber output in 2008 reached 320,000 tons, the average budget plan for a shield 36,000,000 / ton, as a result of high prices at the beginning, you can now make up the difference between the low-cost, to achieve 40,000,000 rupiah average price / ton, higher than the budget price 4,000,000 Shield / ton, more than 30% in profit margins. Rubber prices have risen to 60,000,000 Shield / ton, and that price is speculation, not actual prices, producers and consumers have damage.
Rubber prices fell sharply in the near future, as a result of higher than the cost price, the Vietnam Rubber increase in business inventories.
October 22, Vietnam SVR rubber and rubber RSS from 57,000,000 Shield / ton fell quickly to shield 27,000,000 / tonne, many companies inventory backlog.
It is reported that Vietnam's rubber industry estimates the average cost of harvesting rubber resin million for the 2800-3000 Shield / ton. As of October 14, the last one month of Mong Cai market price of rubber fell to 27,000,000 Shield / ton, no one to buy. Prior to that, because of lower prices, rubber goods companies cover Hard Trading in a Dream, hoping to like in October 2007, customers need to purchase rubber, stocks of all kinds, prices. Now, the cost is higher than the sales price, business-to-sales have been indifferent, each of the stocks of small companies have 400-500 tons of rubber, rubber stocks of large enterprises in the 1000-2000 tonnes.
Vietnam Rubber Association of the Secretary-General Cui-hua Chen's view, usually with the rubber price rise in international oil prices, high crude oil prices rose to 140 U.S. dollars / barrel, the fluctuation range to reach 65-80 dollars, so the low price of rubber mixed by the world's favorite . Now, the financial crisis in the United States and Europe, economic recession, the Vietnam Rubber season (September to December) the supply of natural rubber in a rapid increase in the fourth quarter. These factors combined, resulting in rubber prices.
Vietnam Rubber Industry Group, Le Quang-chun, general manager of the Vietnamese rubber industry remains optimistic. He believes that the export prices, and rubber plantation industry is still a successful season. Group rubber output in 2008 reached 320,000 tons, the average budget plan for a shield 36,000,000 / ton, as a result of high prices at the beginning, you can now make up the difference between the low-cost, to achieve 40,000,000 rupiah average price / ton, higher than the budget price 4,000,000 Shield / ton, more than 30% in profit margins. Rubber prices have risen to 60,000,000 Shield / ton, and that price is speculation, not actual prices, producers and consumers have damage.
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