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Natural rubber, together with steel, oil, and coal, is called the four major industrial raw materials. It is a basic industry related to the national economy and people's livelihood, and it is also an important strategic resource. Since China became the largest consumer and importer of rubber in 2001, its dependence on rubber has continued to increase. At present, nearly 80% of China's natural rubber demand comes from traditional natural rubber producing countries such as Thailand and Malaysia. In order to meet the demand for natural rubber in China, a green revolution is progressing steadily, and the preliminary results have attracted the attention of the world. This green revolution started with the greening of preservatives.
The inventors started from the source of natural rubber tapping to produce natural rubber latex, which must be treated with anti-coagulation and fresh-keeping, starting from eradicating the growth and reproduction of microorganisms in the latex to produce acidic metabolites, preventing the latex from spoiling, producing unpleasant odors, and generating some beneficial bacteria and mold which break down harmful substances in latex. This new type of rubber latex anti-coagulation and preservative is extracted from natural substances, and forms active substances with good bacteriostatic effect and complementary effect in different proportions to inhibit microorganisms, so that the protein of microorganisms is coagulated or denatured, thereby interfering with their growth and reproduction. This new type of rubber latex anti-coagulation and preservative can act on the cell wall and cell membrane of microorganisms, destroy or damage the cell wall, or interfere with the mechanism of cell wall synthesis, resulting in the leakage of intracellular substances, or affecting the electron transport system of the respiratory chain related to the membrane, thereby Has anti-microbial effect. It can also act on the genetic material or the structure of genetic particles, thereby affecting the replication, transcription, and protein translation of the genetic material. It can act on the enzyme system in microorganisms, inhibits the activity of enzymes, and interferes with their normal metabolism. This new type of rubber latex anti-coagulation preservative has reached the mass production level, which is enough to meet the demand of China's natural rubber green revolution.
In today's world, the rubber industry plays an increasingly important role in various fields. Exist everywhere in the sky, the ground and the ocean. The science and technology of rubber is also progressing and developing rapidly, but it lags slightly compared with other industries. In particular, the most basic mixing process in rubber processing has not changed significantly for decades. The reason for this is limited by the morphology and properties of the raw rubber. Solid blocky elastic rubber with high viscosity needs to be uniformly dispersed with various powdery and oily compounding agents to form a mixed rubber with various properties. The kneading, shearing and pressing of the rollers with the speed ratio cannot complete the kneading process. At the same time, in the process operation, the accompanying dust pollution will seriously affect the environmental sanitation and human life and health. If you walk into the rubber mixing workshop, you will deeply feel the trouble of being dirty, exhausted and tired. For this reason, people are making unremitting efforts to realize "green rubber". In order to rationalize the mixing process, that is, to realize continuous, automatic and energy saving, we can start by changing the shape of the raw rubber, which means changing the processing technology of the bulk rubber to the processing technology of fine powder. The performance of block rubber is just a variation of traditional block rubber. Powder rubber can be energy-saving and environmentally friendly in the rubber mixing process, which leads to the development of powder rubber production technology and technology.
Powder rubber can be divided into raw rubber powder rubber and vulcanized powder rubber. In the rubber product processing industry, everyone is familiar with the rubber powder mentioned and applied. In fact, it is also a kind of powder rubber, but it is a waste vulcanized rubber product, which has been processed and modified through different crushing methods and multiple processes. This kind of rubber powder is called vulcanized powder rubber, which can be regarded as another type of powder rubber. It can be used as a substitute for low-grade raw rubber, and can also be directly processed into cheap rubber products. The quality and application of this kind of vulcanized rubber powder must first consider the fineness of the particle size of the rubber powder after processing, and the requirements of the production product for the rubber powder. 100-mesh to 150-mesh can also produce better quality products, and at least 60-mesh to 80-mesh can be used directly. At present, the vulcanized rubber powder produced in China is mostly small and micro enterprises. The crushing equipment and process route are simple, and the fineness generally does not meet the requirements, so it can only be used as a filler. To achieve high-mesh vulcanized rubber powder, cryogenic pulverization is ideal, but the production cost is high.
Green is the main color of nature, and the color of life. With the continuous progress of human civilization, environmental protection, ecological maintenance, and harmonious development have become the mainstream of current economic development. Green products have become products that all walks of life are competing to develop. Since the French Michelin company put forward the concept of green tires in 1992, The concept of "green tires" has won the hearts of the people, and countries are competing for development, and it has become the key point of the development strategy of the tire industry in all countries in the world.
Internationally, radial tires with low rolling resistance and low exhaust emissions are green tires. From the perspective of harmony and sustainable development, we believe that the definition of green tires is far more than these. my country is a country with scarce resources. The development of circular economy has become an important strategic measure for sustainable development in my country. Therefore, from the perspective of circular economy, the connotation of green tires will be more abundant, which should include green materials as raw materials and sustainable utilization after scrapping. Through the efforts in recent years, China's waste rubber utilization industry has made great progress, and technology and quality have made a "qualitative" leap. The relationship between green tires and the development of recycled rubber is getting closer and closer.1. Recycling waste tires is of great significance
