Recently, the Dadukou Jianqiao Industrial Park came with good news. Supported by the Chongqing Municipal Science and Technology Commission, International Composite, Chongqing University and Chongqing University of Technology jointly developed CNG (compressed natural gas) high pressure gas cylinder glass fiber yarn and high performance long glass fiber. These two new materials. Previously, the two materials used in China were mainly produced by foreign companies such as OCV and PPG, which filled the domestic gap and broke the monopoly position of foreign companies in this field.
Glass fiber is an inorganic non-metallic material with good insulation, heat resistance and corrosion resistance. Its composition is silica, alumina and so on. It is made of mineral raw materials through high-temperature melting, drawing and other processes. Its monofilament diameter ranges from a few microns to twenty micrometers, which is equivalent to 1/20-1/5 of a hair strand. Each bundle of fiber strands has hundreds or even thousands of monofilaments, usually as a composite. Reinforcing material in the material.
According to reports, CNG high-pressure gas cylinder glass fiber yarn is wrapped around the outside of the vehicle CNG cylinder, which not only prevents rust, but also makes the cylinder liner thinner because of its strong impact resistance, and the overall weight can be reduced by 40%. -55%.
"In terms of the number of taxis alone, Chongqing uses more than 200,000 cylinders per year, and our price is 20% cheaper and more competitive." The international composite responsible person told reporters that not only the Chongqing market is for them. The words are a blue ocean. It is expected that within two or three years, they will occupy more than 50% of the market share in the southwest region, and the annual output value will exceed 200 million yuan.
The high-performance long glass fiber developed this time is mainly used to reduce the weight of automotive parts. “The impact resistance of this material is comparable to that of steel, but it is 2/3 lighter than steel, and the price is about 40% cheaper than the weight of magnesium alloy.†The person in charge introduced the seat pelvis on the car. Various parts such as instrument panels and car door panels can be made of this material, so that the weight of a whole vehicle can be reduced by about 50 kg. "At present, we have cooperated with Changan Automobile and China Automotive Engineering Technology Research Institute to develop R&D of lightweight components."
Glass fiber has been developed since the 1930s and has been used in more than 50,000 downstream products in Europe and the United States, while less than 10,000 in China. “The huge gap allows us to see the development potential of fiberglass, and there are more applications to develop,†the official said.
“Although Chongqing has a good automobile industry base, there are few light-weight parts and auto parts enterprises. At present, it is mainly some metal parts auto parts enterprises.†The people of the Dadukou District Economic and Information Committee said that in the next step, they will focus on introducing raw products. The auto parts enterprises, and guide them to use glass fiber for product manufacturing, forming a whole glass fiber industry chain.
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