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
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[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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