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New Technology Of Rubber Regeneration From Rubber Scrap

2013/8/2 21:51:00 34

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China is a big manufacturing country with < a target= "_blank" href= "http://www.91se91.com/" > shoes < /a >, the annual production of rubber shoes is more than 13 trillion. However, rubber shoes will produce a lot of corner waste during the production process. In the past, these wastes were either thrown into the garbage dump or burned in the incinerator, and turned into various toxic and harmful gases to pollute our air. 
 on the other hand, China is the largest rubber consumer in the world, and at the same time is a country with a shortage of rubber resources. More than 75% of natural rubber needs to be imported annually. It is a pity that the valuable rubber resources should be treated as rubbish. 
Based on this, for a long time, researchers have been committed to the recycling and recycling of rubber products. P In the shoe market of Quanzhou, rubber shoes material wastes that were not seen by others were gradually being "reborn" and spanformed into new shoe materials. 
 rubber scrap is newly acquired .
 Zhang Zhengchou, technical director of Quanzhou Huayang shoe material technology Co., Ltd., showed a sole to reporters. No matter from the appearance or texture, it was nothing different from the usual rubber soles. "This is made of waste rubber." According to Zhang Zhengchou, the biggest problem to be solved in rubber recycling is "desulfurization". Since rubber products must undergo a sulphide treatment before forming, the physical structure of the treated rubber is very stable and it is difficult to reprocess. "If we want to turn these rubber wastes into treasure, we must use physical means to" open the sulfur carbon bonds inside them. " The "opening rate" of sulfur carbon bonds is directly related to the recycling rate of rubber. However, it is understood that the traditional rubber recovery processing method can reach 40% of the rubber sulfur carbon bond "opening rate" after processing, so that the reclaimed rubber must be reconstituted into shoe material, and a large amount of new glue must be added. The proportion of reclaimed rubber and new adhesive is almost 3:7, and the rate of recovery is very low. 
 Huayang shoe material has increased the "opening rate" of sulfur and carbon bonds of rubber waste to more than 70% by adjusting the formulation and improving the production equipment. The recovery rate of rubber waste has been greatly improved. "Now the proportion of reclaimed rubber and new rubber in the regenerated rubber shoes we manufacture is 8:2, and reclaimed rubber has become the leading role deserved." According to Zhang Zhengchou, the performance of regenerated rubber shoes in various physical properties tests is almost the same as that of new rubber, and even better than that of new ones. The project is also supported by the new technology of energy saving and emission reduction. 
 Advanced reclaimed rubber thermoplastic process 
 but the performance of reclaimed rubber shoes produced by Huayang shoe material is quite satisfactory, but there is still a headache that can not be solved. "Reclaimed rubber is to be made into shoe material, and its manufacturing process should still take the old road of rubber, that is, molding. This kind of production method is time-consuming and easy to say. It is also easy to produce corner waste, and these reclaimed rubber scrap materials are more difficult to recycle again, and their recycling ratio is lower than that of one time. Eventually, it is inevitable to produce a bunch of useless and polluting waste. " Based on the improvement of the regenerated rubber production process and the consideration of its performance improvement, Huayang shoe material has invested heavily in the development of a new round of recycling and reuse of waste rubber. This time, the researchers turned their attention from the chemical modification research of reclaimed rubber desulfurization to the production of new materials by blending waste rubber powder with other shoe materials. 
 "now the shoe material industry has a main material TR. This shoe material is light in weight, quick in molding, simple in production process, and can be completely recycled and has low comprehensive cost. However, TR soles are not resistant to bending, aging and wear resistance. On the other hand, although rubber soles are slow in shape, low in material utilization and high in energy consumption, rubber soles are more wearable and aging resistant, and the surface texture is better than that of TR soles. "How to create a material that has both the properties of rubber soles and the processing method of thermoplastic materials is the new direction that shoemaking people have been researching." Huayang shoe material "step" is obviously bigger. They want to reuse the old rubber and TR, and realize the magnificent spanformation of turning waste into treasure. 
The R & D personnel of Huayu shoe material surface active treatment of rubber powder made of waste rubber, and the compatibility of EVA to the rubber and the inclusion of powder are used to make the rubber powder disperse evenly in SBS. The three materials attract each other and form a tight structure. A new TR shoe material is shining. 
 "at present, the price of TR raw materials on the market is nearly 3 times the price of this reclaimed rubber TR. Moreover, the new material can be thermally plastic with ordinary discs, making an average shoe sole in 40 seconds. According to Zhang Zhengchou, in the past, rubber soles were molded by pressing process, averaging 2 minutes to produce a sole. The reporter has a reclaimed rubber TPR sole in his hand, which is very light and light, and it is equal to ordinary rubber soles, no matter from the surface of press, wear and so on. 
 reporter learned in the interview that some leading rubber and plastic enterprises have produced some thermoplastic moulded rubber by modifying the rubber category, such as the MPR rubber introduced by American ALCRYN company, which is cold resistant, heat-resistant and weather resistant. The surface is subgloss and delicate, wear-resistant and resistant to folding, and can be molded separately. But the price of MPR is high after importing into the country, and it is almost impossible for such a small profit industry to bear such a high price. Some domestic university researchers are also working on blending modification of rubbers and thermoplastic elastomers, such as Qingdao University of Science & Technology. However, the experimental results of these universities in China are unable to integrate rubber and thermoplastic elastomers together. The reclaimed rubber TR soles developed by Huayang shoe material are the first to reclaim rubber and recycle plastic in China. 
 although the shoes made of waste rubber are reused, the Sun Farm Corporation also adheres to the highest quality standards of shoe materials, especially the environmental protection standards. "European and American countries are very strict with the environmental indicators of shoe materials. Our shoe materials are based on the" Euro standard ". If the recycled rubber is not up to the standard of environmental protection, we will not recycle it. According to Director Zhang, it is precisely because of the strict quality control that Huayang shoe materials have been introduced into many European and American top shoe companies. Many customers originally wanted to buy Rubber soles, and after seeing the samples of new shoes, they changed their orders. Although the material is still in the initial stage, it has received tens of thousands of orders, and its market prospects are very impressive.