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Anti-impact and wear-resistant high-molecular-weight polyethylene composite lining plate and preparation method for same
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An impact-resistant and wear-resistant, high-molecular-weight technology is applied in the field of impact-resistant and wear-resistant high-molecular-weight polyethylene composite liner and its preparation. low effect
Inactive Publication Date: 2013-10-09
郸城县万顺达塑料包装有限公司
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Chinese patent CN 1032175A blends and cross-links ultra-high molecular weight polyethylene, styrene-butadiene rubber, super wear-resistant carbon black, dicumyl peroxide and other additives, and makes a composite material by molding method, so that the wear amount is close to The residual rate of strength is 83%-96%, and the temperature rises to 350°C without softening. However, the composite material is a cross-linked system, a ball thermosetting material, which cannot be recycled, and can only be made by mechanical processing such as turning. Final product
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Embodiment 1
[0021] An impact-resistant and wear-resistant high-molecular-weight polyethylene composite liner is composed of the following components in parts by weight:
[0022]
[0023] The preparation method of the impact-resistant and wear-resistant high-molecular-weight polyethylene composite liner specifically includes the following steps:
[0024] (1) First take each raw material component respectively according to formula ratio;
[0025] (2) Add the weighed ultrafine magnesium hydroxide and vinyltrimethoxysilane into a high-speed mixer, and stir at a high speed for 2-3 minutes;
[0026] (3) Add ultra-high molecular weight polyethylene, medium-density polyethylene, low-density polyethylene, barium stearate, molybdenum disulfide, and dicumyl peroxide into the mixed powder in step (2), and then high-speed Stir for 2-3min;
[0027] (4) Diatomaceous earth is added in the mixture of step (3), continue high-speed stirring 4-6min;
[0028] (5) Finally, the uniformly stirred mixture i...
Embodiment 2
[0030] An impact-resistant and wear-resistant high-molecular-weight polyethylene composite liner is composed of the following components in parts by weight:
[0031]
[0032] Among them, the molecular weight of ultra-high molecular weight polyethylene is 3-7 million.
[0033] The preparation method is as follows:
[0034] (1) First take each raw material component respectively according to formula ratio;
[0035] (2) Add the weighed ultrafine magnesium hydroxide and vinyltrimethoxysilane into a high-speed mixer, and stir at a high speed for 2-3 minutes;
[0036] (3) Add ultra-high molecular weight polyethylene, medium-density polyethylene, low-density polyethylene, barium stearate, molybdenum disulfide, and dicumyl peroxide into the mixed powder in step (2), and then high-speed Stir for 2-3min;
[0037] (4) Diatomaceous earth is added in the mixture of step (3), continue high-speed stirring 4-6min;
[0038] (5) Finally, the uniformly stirred mixture is hot-pressed and f...
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Abstract
The invention relates to an anti-impact and wear-resistant high-molecular-weight polyethylene composite lining plate, composed of the following components in parts by weight: 40-55 parts of ultra-high-molecular-weight polyethylene, 5-10 parts of medium-density polyethylene, 5-10 parts of low-density polyethylene, 3-5 parts of ultra-fine magnesium hydroxide, 20-30 parts of kieselguhr, 8-10 parts of vinyl trimethoxy silane, 0.5-1.5 parts of barium stearate, 0.2-0.4 parts of molybdenum disulfide, and 0.3-0.5 parts of dicumyl peroxide. The materials of the prescription are uniformly stirred with a high speed step by step, and moulded on a hot press by hot-pressing. The anti-impact and wear-resistant high-molecular-weight polyethylene composite lining plate prepared reserves the intrinsically excellent characteristics of wear resistance, impact resistance, chemical corrosion resistance and low-temperature toughness of the ultra-high-molecular-weight polyethylene, and has the characteristics of great processability and low material cost additionally.
Description
technical field [0001] The invention relates to the field of polymer processing, in particular to an impact-resistant and wear-resistant high molecular weight polyethylene composite liner and a preparation method thereof. Background technique [0002] Ultra-high molecular weight polyethylene (polyethylene with a viscosity-average molecular weight exceeding 1.5 million) has excellent wear resistance, impact resistance, chemical corrosion resistance and low-temperature toughness, and is widely used as a thermoplastic engineering plastic. However, ultra-high molecular weight polyethylene also has some inherent disadvantages of polyethylene resin, such as low heat distortion temperature, poor creep resistance, large thermal expansion coefficient, and low surface hardness, which limit its application range to a certain extent. [0003] The measures to improve the heat resistance of ultra-high molecular weight polyethylene products mainly include: adopting stretching process to or...
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