Sound-attenuating and wear-resistant polyformaldehyde material and preparation method thereof

A technology of polyoxymethylene material and polyoxymethylene resin, which is applied in the field of sound-absorbing and wear-resistant polyoxymethylene materials and its preparation, can solve the problems of high friction coefficient and high noise, and achieve the effects of low cost, high benefit and convenient operation

Active Publication Date: 2012-07-18
徐东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, POM is used on sliding and rolling mechanical parts that have strict requirements on lubricity, wear resistance, rigidity and dimensional stability. The noise is large, the friction coefficient is large, and the material properties need to be further improved.

Method used

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  • Sound-attenuating and wear-resistant polyformaldehyde material and preparation method thereof
  • Sound-attenuating and wear-resistant polyformaldehyde material and preparation method thereof

Examples

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preparation example Construction

[0040] see figure 1 , showing a method for preparing a sound-absorbing and wear-resistant polyoxymethylene material according to an embodiment of the present invention, the method includes the following steps:

[0041] S01: Weigh each component according to the formula of the above-mentioned sound-absorbing and wear-resistant polyoxymethylene material;

[0042] S02: uniformly mixing the polyoxymethylene resin, low-density polyethylene, toughening agent and compatibilizer to obtain an initial mixture;

[0043] S03: Mix the polytetrafluoroethylene, antioxidant, lubricant and aldehyde absorbent with the initial mixture to obtain a mixed material;

[0044] S04: Melt-extrude the mixed material and granulate to obtain the sound-absorbing and wear-resistant polyoxymethylene material.

[0045] In step S01, all materials are weighed accurately, accurate to 0.001 kg. The sound-absorbing and wear-resistant polyoxymethylene material and the preferred content and types of each component...

Embodiment 1

[0052] The components and weight percentages of the sound-absorbing and wear-resistant polyoxymethylene material of the present embodiment are:

[0053] Polyoxymethylene resin 69%;

[0054] Low density polyethylene 7%;

[0055] Toughener 5%;

[0056] PTFE 15%;

[0057] Compatibilizer 3%;

[0058] Antioxidant 0.3%;

[0059] Lubricant 0.2~0.6%;

[0060] Aldehyde absorbent 0.2-0.6%.

[0061]Among them, the polyoxymethylene resin is a copolymerized POM, produced by Yuntianhua Company, and the trade name is M90; the low-density polyethylene is selected from relative density 0.91-0.929, produced by Sinopec, and the trade name is LDPE 7042; the toughening agent thermoplastic elastomer TPU is polyether type, The hardness is 85A, produced by BASF in Germany, and the trade name is 1185A; the polytetrafluoroethylene is made of micro-powder type, the powder material is 150 mesh, and it is produced by Daikin, Japan, and the trade name is L-5; the compatibilizer is EVA resin, the VA c...

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Abstract

The invention provides a sound-attenuating and wear-resistant polyformaldehyde material. The material comprises the following components in percentage by weight: 55 to 75 percent of polyformaldehyde resin, 5 to 10 percent of low density polyethylene, 3 to 10 percent of toughening agent, 10 to 20 percent of polytetrafluoroethylene, 2 to 5 percent of compatilizer, 0.2 to 0.4 percent of antioxidant, 0.2 to 0.6 percent of lubricating agent and 0.2 to 0.6 percent of aldehyde absorbing agent. The invention also provides a method for preparing the sound-attenuating and wear-resistant polyformaldehyde material. The sound-attenuating and wear-resistant polyformaldehyde material has high strength, dimensional stability, creep resistance, fatigue resistance, and high self-lubricating property, sound-attenuating property and wear resistance; and the preparation method for the material is simple, convenient to operate, high in benefit, low in cost and suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a sound-absorbing and wear-resistant polyoxymethylene material and a preparation method thereof. Background technique [0002] As one of the five major engineering plastics, POM (polyoxymethylene) resin is one of the most widely used polymers. It belongs to thermoplastic crystalline polymers, does not contain side chains, high density, high crystalline linear polymers, and has excellent comprehensive properties. performance. [0003] Polyoxymethylene is a hard and dense material with smooth surface and luster, which can be used for a long time in the temperature range of -40 ~ 100 ℃. Its wear resistance and self-lubrication are also superior to most engineering plastics, high tensile bending strength, low water absorption, stable size, high rigidity, creep resistance, high fatigue resistance, etc., especially suitable for manufacturing gears and bearings ....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L59/04C08L23/06C08L75/08C08L27/18C08L23/08C08L31/04C08K5/00C08K5/098C08K5/20B29C47/92B29C48/92
CPCB29C48/04B29C48/92B29C2948/92514B29C2948/92561B29C2948/92704B29C2948/92895B29C2948/92904
Inventor 徐东徐永周兵
Owner 徐东
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