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Wear-resistant polyformaldehyde composite material and preparation method thereof

A composite material, polyoxymethylene technology, applied in the field of wear-resistant polyoxymethylene composite materials and its preparation, can solve the problems of poor thermal stability and low wear resistance, achieve good thermal stability, improve wear resistance, and improve dispersion Effect

Inactive Publication Date: 2018-12-04
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a wear-resistant polyoxymethylene composite material and its preparation method, which solves the technical problems of low wear resistance and poor thermal stability of the polyoxymethylene material in the prior art

Method used

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  • Wear-resistant polyformaldehyde composite material and preparation method thereof

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preparation example Construction

[0024] Preparation of modified glass fiber: After washing and drying the glass fiber, immerse it in the polytetrafluoroethylene / polyvinylidene fluoride dispersion, then take it out and dry it, bake and sinter at 280°C to obtain the modified glass fiber; polytetrafluoroethylene Ethylene / polyvinylidene fluoride dispersion is a colloidal solution formed by suspending polytetrafluoroethylene / polyvinylidene fluoride (mass ratio 1:1) resin with an average particle size of 0.2-0.3 μm in liquid water, and the viscosity of the colloidal solution is 0.03 Pa·s, the concentration is 50wt%, and the pH value is 10.

[0025] Preparation of odor adsorption masterbatch: 100 parts of polyoxymethylene, 10 parts of hydrophobic diatomite, 10 parts of hydrophobic activated carbon, 10 parts of needle-shaped zeolite molecular sieve, 10 parts of zinc ricinoleate, 5 parts of nano-silica, stearic acid Add 1 part of calcium, 5 parts of melamine, and 0.5 part of benzofuranone free radical scavenger into a...

Embodiment 1

[0030] The wear-resistant polyoxymethylene composite material in this example is made of the following raw materials in parts by weight: 70 parts of polyoxymethylene, 3 parts of odor absorption masterbatch, 0.5 parts of molybdenum disulfide, 25 parts of modified glass fiber, 1 part of silicone powder, 0.5 parts Part of antioxidant 1098, 0.5 part of antioxidant 168;

[0031] The preparation method of the wear-resistant polyoxymethylene composite material of this embodiment comprises the following steps:

[0032] S1. Clean and dry the glass fiber and then immerse it in the polytetrafluoroethylene / polyvinylidene fluoride dispersion, take it out and dry it, bake and sinter at 270°C to obtain the modified glass fiber;

[0033] S2. Weigh each raw material in parts by weight, pour polyoxymethylene, odor absorption masterbatch, molybdenum disulfide, silicone powder, antioxidant 1098, and antioxidant 168 into the mixer, stir evenly and place in twin-screw extrusion In the extruder, th...

Embodiment 2

[0036] The wear-resistant polyoxymethylene composite material in this embodiment is made of the following raw materials in parts by weight: 54 parts of polyoxymethylene, 1 part of odor absorption masterbatch, 0.2 part of molybdenum disulfide, 45 parts of modified glass fiber, 0.2 part of silicone powder, 0.1 Part of antioxidant 1098, 0.1 part of antioxidant 168;

[0037] The preparation method of the wear-resistant polyoxymethylene composite material of this embodiment comprises the following steps:

[0038] S1. Wash and dry the glass fiber and then immerse it in the polytetrafluoroethylene / polyvinylidene fluoride dispersion, take it out and dry it, bake and sinter at 290°C to prepare the modified glass fiber;

[0039] S2. Weigh each raw material in parts by weight, pour polyoxymethylene, odor absorption masterbatch, molybdenum disulfide, silicone powder, antioxidant 1098, and antioxidant 168 into the mixer, stir evenly and place in twin-screw extrusion In the extruder, the m...

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Abstract

The invention provides a wear-resistant polyformaldehyde composite material and a preparation method thereof, and relates to the technical field of high molecular materials. The wear-resistant polyformaldehyde composite material is prepared from the following raw materials: polyformaldehyde, modified glass fibers, an odor adsorption masterbatch, molybdenum disulfide, a lubricant and an antioxidant. The raw materials of the wear-resistant polyformaldehyde composite material are prepared by using the modified glass fibers, the odor adsorption masterbatch and other raw materials, so that the prepared wear-resistant polyformaldehyde composite material has remarkable improvement in wear resistance and maintains excellent mechanical properties; and the wear-resistant polyformaldehyde composite material has low odor characteristics.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a wear-resistant polyoxymethylene composite material and a preparation method thereof. Background technique [0002] Polyoxymethylene is an engineering plastic with excellent comprehensive properties. It has extremely high strength and rigidity, good dimensional stability, excellent fatigue resistance, creep resistance, self-lubrication and wear resistance. It is used in machinery, automobiles, It is widely used in the manufacture of various parts with low friction and wear resistance in electronics, home appliances and building materials. [0003] However, polyoxymethylene has poor thermal stability at high temperatures, is easy to decompose, has a narrow processing temperature, and has poor aging resistance, so it can only be used under low speed and low load conditions. In order to use polyoxymethylene under high-speed, high-load and harsh conditions, it is necessar...

Claims

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Application Information

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IPC IPC(8): C08L59/00C08K13/06C08K9/04C08K7/14C08K3/34C08K3/04C08K7/10C08K5/098C08K3/36C08K5/3492C08K5/1535C08K3/30B29C47/92B29C48/92
CPCC08K2003/3009C08K2201/011C08K2201/014C08L59/00C08L2201/08C08L2205/025C08L2205/03C08K13/06C08K9/08C08K7/14C08K3/34C08K3/04C08K7/10C08K5/098C08K3/36C08K5/34922C08K5/1535C08K3/30
Inventor 杨桂生吴安琪范继贤
Owner HEFEI GENIUS NEW MATERIALS
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