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Polyformaldehyde composite material and preparation method thereof

A composite material, polyoxymethylene technology, applied in the field of polyoxymethylene composite material and its preparation, can solve the problems of polyoxymethylene impact strength, poor low temperature toughness, negative effect of material low temperature toughness, etc., and achieves good wear resistance, performance guarantee, Guaranteed effect of wear resistance

Active Publication Date: 2012-04-18
古道尔工程塑胶(深圳)有限公司 +1
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Problems solved by technology

[0003] The traditional method of modifying polyoxymethylene is generally to add toughening materials such as glass fiber. However, due to the poor impact strength and low-temperature toughness of polyoxymethylene itself, in terms of modification and fiber addition, although the mechanical strength of polyoxymethylene is improved, But it has a negative effect on the low temperature toughness of the material

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  • Polyformaldehyde composite material and preparation method thereof
  • Polyformaldehyde composite material and preparation method thereof
  • Polyformaldehyde composite material and preparation method thereof

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preparation example Construction

[0024] In addition, this embodiment also provides a method for preparing a polyoxymethylene composite material, which specifically includes the following steps:

[0025] Firstly, weigh 70-80 parts by weight of polyoxymethylene resin, 10-15 parts by weight of toughening agent and 2-2.5 parts by weight of silicone oil, mix them evenly, and then add 0.3-0.4 parts by weight of antioxidant and 8-15 parts by weight. Parts by weight of the anti-wear agent are uniformly mixed and extruded and granulated at 160-190° C. to obtain a polyoxymethylene composite material.

[0026] By adding components such as tougheners and wear-resistant agents to the polyoxymethylene resin, the disadvantages of difficult processing of the polyoxymethylene resin can be overcome, the processing efficiency is higher, and the performance of the product can also be guaranteed.

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Abstract

The invention relates to a polyformaldehyde composite material, comprising 70-80 weight portions of polyformaldehyde resin, 10-15 weight portions of flexibilizer, 2-2.5 weight portions of silicone oil, 0.3-0.4 weight portions of antioxidant and 8-15 weight portions of wear-resisting agent. The polyformaldehyde composite material has the advantages of excellent wear resistance, low temperature resistance, no noise and the like. According to the invention, by adding teflon as the wear-resisting agent in molecules, the wear resistance of the product is good; by using the thermoplastic polyurethane as the flexibilizer, the low temperature toughness of the product is effectively improved at the same time the wear resistance and mechanical strength of the product are guaranteed. In addition, the invention further relates to a preparation method of the polyformaldehyde composite material.

Description

【Technical Field】 [0001] The invention relates to the field of polymer materials, in particular to a polyoxymethylene composite material and a preparation method thereof. 【Background technique】 [0002] Polyoxymethylene has the same specific strength and specific stiffness as metals, good electrical properties, wear resistance, and good mechanical properties. It can be widely used in aviation, machinery, automotive and other industries. However, POM has high crystallinity, which makes the material notch impact strength poor, notch is more sensitive, and heat resistance, low temperature resistance is poor, the material is more difficult to process, so it is necessary to modify the POM. [0003] The traditional method of modifying polyoxymethylene is generally to add toughening materials such as glass fiber. However, due to the poor impact strength and low-temperature toughness of polyoxymethylene, in terms of modification and fiber addition, although the mechanical strength of polyo...

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Application Information

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IPC IPC(8): C08L59/00C08L75/04C08L27/18C08L83/04C08K5/134C08K5/526
Inventor 刘辉刘卫东
Owner 古道尔工程塑胶(深圳)有限公司
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