Rubber technology

Modern rubber processing technology has made great progress. However, as a rubber processing industry in the supporting industry, there are always many new problems that need to be solved, and it must be continuously developed. The development of modernization mainly focuses on high performance, functionalization, greening, automation, energy conservation and other aspects.

Protein allergy in latex product

Since the implementation of the standard rubber program in Malaysia in 1965, after the natural rubber has achieved relatively scientific and advanced production, the problem that needs to be solved is the protein allergy problem of natural latex products. It shows up to 2.5% of allergies. Studies have shown that allergies are caused by extractable (soluble) proteins remaining in natural latex products. At present, only a few countries in the world have low-protein latex and products, which meet the quality standards of the US Food and Drug Administration (soluble protein fraction less than 50X10-6).

Rubber elastomer production

In the 1990s, metallocene catalysis technology was used in industry to synthesize elastomers with adjustable molecular weight distribution and regularity. This technique facilitates the polymerization of higher olefins, non-conjugated dienes, styrene, cyclic olefins, and the like. For example, EOC copolymerized with ethylene and & octene, because the mole fraction and distribution of octene are controllable, octene copolymerization destroys the crystalline region of polyethylene and forms a crystalline and non-crystalline material, resulting in mechanical properties and processing properties. A well-balanced series of polymers can be processed by injection, extrusion, blow molding, or by rubber processing.

The problem of rubber reinforcement filling, S.C.Mote discovered for the first time in the early 20th century that carbon black can significantly improve the strength of rubber, and found an effective way to strengthen it.

The world-recognized carbon black was invented by the Chinese. As early as 3,000 years ago, the Yin dynasty oracle bone was written using ink made of soot. This technology was introduced into the United States. In 1872, the United States established Carbon Black to produce carbon black. In 1943, the oil furnace black carbon appeared, and the furnace black became the protagonist of rubber reinforcement. In the 1970s, a new process of carbon black was introduced, called the third generation of carbon black.

After carbon black is used in rubber, due to problems in the process, people use softeners such as wax and asphalt in the early stage of the rubber industry to facilitate the use of softeners such as pine tar, spindle oil and engine oil. After the 1930s and 1940s, petroleum softeners and other plasticizers appeared in the need to adapt to synthetic rubber.

China’s rubber industry started from the establishment of the first rubber plant in Guangzhou in 1915 from the Guangzhou Brothers Rubber Co., Ltd., and established the Chint and Greater China Rubber Plants in the 1920s. In the 1930s, Shandong, Liaoning, and Tianjin successively established rubber. plant.

China has Hainan, Yunnan, Guangdong and Guangxi and other regions suitable for planting natural rubber. It was planted in Leizhou Peninsula in 1904. In the early 1950s, it successfully broke the internationally recognized north latitude 17° north of the “rubber planting restricted area”. in conclusion. Rubber was planted in a large area in Guangxi and other places with a latitude of 18° to 24°. China is one of the important producers of natural rubber.