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    Home > Chemicals Industry > New Chemical Materials > Seize the commanding heights of materials research and development

    Seize the commanding heights of materials research and development

    • Last Update: 2022-06-22
    • Source: Internet
    • Author: User
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    ——Record the serialized development of polypropylene vehicle materials by Lanzhou Chemical Research Center.
    After nearly ten years of hard work, the Lanzhou Chemical Research Center of China Petrochemical Research Institute and Lanzhou Petrochemical have developed SP179, SP13A, SP18I, EP531N, EP533N , EP508N and other 6 markets urgently need special grades of polypropylene vehicle materials, and gradually formed a vehicle material production technology platform with independent intellectual property rights
    .
    Up to now, Lanzhou Petrochemical has produced more than 200,000 tons of polypropylene vehicle materials.
    PetroChina’s polyolefin business has made new contributions to the transformation and upgrading and high-quality development
    .
    ” Recently, the Lanzhou Chemical Research Center expert Yang Shiyuan introduced
    .
    To reduce exhaust pollution and energy consumption caused by motor vehicles, weight reduction is one of the most direct and effective measures
    .
    For every 1% reduction in vehicle weight, fuel consumption can be reduced by 0.
    7%, and carbon emissions can be reduced by 0.
    3% to 0.
    5%
    .
    Compared with steel with the same structural performance, the use of plastics and composite materials can reduce the weight of automobile parts by about 35%, and plastic products are widely used in motor vehicles
    .
    However, the wide variety of plastic products for vehicles will cause great difficulties for recycling
    .
    At present, there are still more than 10 kinds of plastics used in automobiles, and plastic materials that account for more than 8% of the automobile's own weight cannot be recycled
    .
    Therefore, the simplification of automotive plastics is the only way for future development
    .
    Most of the polypropylene base resins for vehicles are mid-to-high-end products with high technical content, which are difficult to develop and limited in technology transfer, requiring independent research and development
    .
    The research team of the center aims at the high-end product market, and takes the "three high and two low" (ie high flow, high modulus, high impact, low odor, low VOCs) series of products as the research target
    .
    Aiming at the difficulties in the development of a catalyst system with high hydrogen tuning sensitivity, high stereoregularity control ability, and good copolymerization ability, researchers based on the coordination polymerization theory of Zigler-Natta catalysts, through a large number of model tests and pilot studies, solved the Zigler- The contradiction between the inherent hydrogen modulation sensitivity and stereoregularity of the Natta catalyst system, and the development of the internal electron donor main catalyst based on the good copolymerization ability, has laid a technical foundation for the development of high-melting finger copolymer products with a good balance of rigidity and toughness
    .
    By analyzing the odor of polypropylene products and the source of VOCs, they developed a low-odor, low-VOCs series of automotive polypropylene platform technology, and the odor level of the produced automotive polypropylene series has reached the domestic leading level
    .
    EP531N product is a high-melt index, high-impact (toughness) impact-resistant copolymer polypropylene product.
    There is no precedent for the development of this type of product in the Spheripol-Ⅱ double-loop single-gas-phase kettle process
    .
    Starting from the pore structure of the main catalyst, the researchers combined the high hydrogen modulation sensitivity external electron donor with the polymerization process, breaking through the technical barriers of the patentees and successfully producing EP531N products
    .
    EP533N is an impact copolymer polypropylene product with high melting index and good rigidity and toughness
    .
    Researchers have solved the contradiction between product rigidity and processing performance through research and process optimization of compound external electron donors
    .
    The product has been recognized by the three major domestic automobile modification companies, creating conditions for large-scale promotion and application
    .
    EP508N is an impact copolymer polypropylene product with ultra-high melt index and high rigidity
    .
    Researchers have conducted research on internal and external electron donors with high stereoregularity.
    After 4 years of research, the product pilot technology has achieved industrial transformation in Lanzhou Petrochemical in October this year.
    The EP508N product was trial-produced for the first time, and its performance reached the level of similar domestic products, filling the gap in the product.

    .
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