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Low-temperature-resistant high-wear-resistant nylon material as well as preparation method and application thereof

A technology with high wear resistance and low temperature resistance, applied in the field of polymer material synthesis and processing, can solve problems such as many defects, rough materials, poor system compatibility, etc., and achieve the effect of good low temperature toughness and good wear resistance

Pending Publication Date: 2022-03-11
WANHUA CHEMICAL (NINGBO) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing wear-resistant materials are usually polytetrafluoroethylene micropowder, molybdenum disulfide, aramid fiber powder, silicone masterbatch, graphite, ultra-high molecular weight polyethylene and wollastonite, etc., but many materials are inorganic fillers or non-polar There are certain problems in the compatibility of the material with nylon, which leads to many defects in the system, which are easily amplified by the external force, which makes the mechanical properties of the material worse. On the other hand, the compatibility of the system is poor. Poor, shark skin, dark lines and other phenomena are prone to appear during processing, which makes the appearance of the material worse. Therefore, improving the compatibility of the system helps to improve the performance of nylon materials
[0005] CN112143242A discloses a high-strength wear-resistant nylon composite material, said composite material is prepared by PA66, glass fiber, wear-resistant agent (polytetrafluoroethylene, molybdenum disulfide, etc.), and the nylon composite material prepared by this invention has low temperature and Wear-resistant performance, but the surface of the prepared material is rough due to the introduction of glass fiber, which limits the application of the material. At the same time, the added anti-wear agent fluororesin reduces the compatibility of the system
CN104788950A discloses a wear-resistant self-lubricating nylon composite material, which uses nylon, carbon fiber, water repellent, molybdenum disulfide and a compatibilizer, wherein the introduction of carbon fiber and molybdenum disulfide causes the material to be extruded and cannot be prepared for its original color, which limits its application

Method used

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  • Low-temperature-resistant high-wear-resistant nylon material as well as preparation method and application thereof
  • Low-temperature-resistant high-wear-resistant nylon material as well as preparation method and application thereof
  • Low-temperature-resistant high-wear-resistant nylon material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0067] In this preparation example, a wear-resistant masterbatch is provided, and the wear-resistant masterbatch is prepared by the following preparation method:

[0068] 88.4% polar group modified ultra-high molecular weight polyethylene, 0.4% ethylene-maleic anhydride copolymer, 10% modified fluororesin, 0.2% zinc stearate, 0.2% erucamide, 0.4% silicone matrix Granules and 0.4% phosphite antioxidant were mixed by a torque rheometer at a temperature of 250°C for 5 minutes. After the mixing was completed, they were frozen in a liquid nitrogen environment for 10 minutes and ground to obtain a mixture with a length of 2- 5μm wear-resistant masterbatch A.

[0069] Among them, the grade of ultra-high molecular weight polyethylene modified by polar groups is LY1040; the grade of ethylene-maleic anhydride copolymer is E60P; the grade of modified fluororesin is modified fluororesin A; the phosphite antioxidant is Irgonox 168.

preparation example 2

[0071] In this preparation example, a wear-resistant masterbatch is provided, and the wear-resistant masterbatch is prepared by the following preparation method:

[0072] 93.7% polar group modified ultra-high molecular weight polyethylene, 0.3% polyethyleneimine, 5% modified fluororesin, 0.2% zinc stearate, 0.2% erucamide, 0.2% silicone masterbatch, 0.4 % phosphite antioxidant, mixed by torque rheometer, the temperature of mixing is 250 ℃, the time is 5min, after the mixing is completed, it is frozen in liquid nitrogen environment for 10min to grind, and the length is 2-5μm. Grinding masterbatch B.

[0073] Among them, the grade of ultra-high molecular weight polyethylene modified by polar groups is LY1040; the grade of polyethyleneimine is P1050; the grade of modified fluororesin is modified fluororesin B; the phosphite antioxidant is Irgonox168.

preparation example 3

[0075] In this preparation example, a wear-resistant masterbatch is provided, and the wear-resistant masterbatch is prepared by the following preparation method:

[0076] 79% polar group modified ultra-high molecular weight polyethylene, 0.4% hyperbranched polyester, 18.6% modified fluororesin, 0.2% zinc stearate, 0.2% erucamide, 1.2% silicone masterbatch, 0.4 % phosphite antioxidant, mixed by torque rheometer, the temperature of mixing is 250 ℃, the time is 5min, after the mixing is completed, it is frozen in liquid nitrogen environment for 10min to grind, and the length is 2-5μm. Grinding masterbatch C.

[0077] Among them, the grade of ultra-high molecular weight polyethylene modified by polar groups is LY1040; the grade of hyperbranched polyester is Hyper C181; the grade of modified fluororesin is modified fluororesin A; the phosphite antioxidant is Irgonox168.

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Abstract

The invention provides a low-temperature-resistant high-wear-resistant nylon material as well as a preparation method and application thereof, and the low-temperature-resistant high-wear-resistant nylon material is prepared from the following raw materials in percentage by weight: 60-87% of polyamide; 12-38% of wear-resistant master batch; 0.2%-0.8% of a lubricating agent; and 0.8%-1.2% of an antioxidant. The nylon material disclosed by the invention has excellent low temperature resistance, high wear resistance and self-lubricating effect, can keep the natural color, and is suitable for wear-resistant sliding blocks, wear-resistant pipelines or cables and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer material synthesis and processing, and relates to a low-temperature-resistant and high-abrasion-resistant nylon material and its preparation method and application. Background technique [0002] Nylon material, as a kind of engineering plastic, has attracted wide attention due to its high mechanical strength, excellent self-lubricating property, and oil resistance. Because of its remarkable performance, nylon material has more applications in pipeline cables and bearings. With the gradual expansion of the wind power industry, the application in this field will gradually expand. [0003] The self-lubrication and low friction coefficient of nylon material make the wear resistance of the material suitable for most pipeline cable requirements. Among many nylons, short-chain nylon such as PA6 or PA66 nylon has excellent mechanical properties, temperature and cold resistance, wear resistance and weathe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08L23/26C08L23/08C08L79/02C08L67/00C08L27/12C08L83/04C08K5/098C08K5/20C08K5/526C08J3/22
CPCC08L77/02C08L77/06C08J3/226C08L2203/18C08L2203/202C08L23/26C08L23/0869C08L27/12C08L83/04C08K5/098C08K5/20C08K5/526C08L79/02C08L67/00
Inventor 宋林祁先勇陈连清邵有国纪少思隋杨徐延伟石耀东
Owner WANHUA CHEMICAL (NINGBO) CO LTD
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