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A continuous long glass fiber reinforced polyoxymethylene material and its preparation method

A technology of polyoxymethylene material and long glass fiber, which is applied in the field of continuous long glass fiber reinforced polyoxymethylene material and its preparation, can solve the problems of non-uniform dispersion of glass fiber, decreased fluidity of blends, and decreased performance of composite materials. Achieve the effects of improving glass fiber exposure, improving surface roughness, and improving mechanical properties

Active Publication Date: 2016-01-20
河南能源集团研究总院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the easy degradation of polyoxymethylene, as the content of glass fiber increases, the fluidity of the blend decreases greatly, resulting in difficulties in production and processing, and the glass fiber cannot be uniformly dispersed in the matrix resin, resulting in a decline in the performance of the composite material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The continuous long fiber reinforced polyoxymethylene blend of this embodiment is formulated by the following raw materials in weight percentage:

[0025] POM resin 80.9%

[0026] Continuous alkali-free long glass fiber 15%

[0027] Compatibilizer (maleic anhydride grafted polyoxymethylene) 3%

[0028] Antioxidant (antioxidant 1076) 0.3%

[0029] Coupling agent (silane DL620) 0.2%

[0030] Acid absorbent (dicyandiamide) 0.3%

[0031] Anti-glass fiber exposure agent (sodium stearate) 0.3%.

[0032] Put the components in the above proportions except glass fiber into a mixer and mix thoroughly for 3-5 minutes, and then extrude the mixture through a twin-screw extruder to granulate. The processing temperature is 170-200°C, the screw speed is 300rpm, the prepared reinforced polyoxymethylene pellets are put into an oven and dried at 80°C for 3 hours, and finally the product is obtained.

Embodiment 2

[0034] The continuous long fiber reinforced polyoxymethylene blend of the present embodiment is formulated by the following raw materials in weight percentage:

[0035] POM resin 75.9%

[0036] Continuous long glass fiber 20%

[0037] Compatibilizer (diisocyanate) 3%

[0038] Antioxidant (antioxidant 1098) 0.3%

[0039] Coupling agent (silane coupling agent K550) 0.2%

[0040] Acid absorbent (melamine) 0.3%

[0041] Anti-glass fiber exposure agent (silicone oil) 0.3%.

[0042] Put the components in the above proportions except glass fiber into a mixer and mix thoroughly for 3-5 minutes, and then extrude the mixture through a twin-screw extruder to granulate. The processing temperature is 170-200°C, the screw speed is 300rpm, the prepared reinforced polyoxymethylene pellets are put into an oven and dried at 80°C for 3 hours, and finally the product is obtained.

Embodiment 3

[0044] The continuous long fiber reinforced polyoxymethylene blend of the present embodiment is formulated by the following raw materials in weight percentage:

[0045] POM resin 70.9%

[0046] Continuous alkali-free long glass fiber 25%

[0047] Compatibilizer (epoxy resin) 3%

[0048] Antioxidant (N-phenyl-2-naphthylamine) 0.3%

[0049] Coupling agent (silane coupling agent A1100) 0.2%

[0050] Acid absorbent (dicyandiamide and melamine, mass ratio 1:1) 0.3%

[0051] Anti-glass fiber exposure agent (modified EBS) 0.3%.

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Abstract

The invention relates to a continuous long glass fiber reinforced polyoxymethylene material and a preparation method thereof, which is prepared from the following raw materials in weight percentage: 50-80% of polyoxymethylene resin, 10-40% of continuous long glass fiber, and a compatibilizer 1-5%, antioxidant 0.1-5%, coupling agent 0.1-5%, acid absorbing agent 0.1-5%, anti-glass fiber exposure agent 0.1-5%. The continuous long glass fiber reinforced polyoxymethylene material prepared by the present invention has better rigidity and creep resistance than traditional glass fiber reinforced materials, and the tensile strength and bending strength are significantly improved. times, and can still maintain good mechanical properties under high temperature and high humidity, which can meet the application requirements of polyoxymethylene in precision machinery, electronic appliances, light industry, chemical industry, building materials and other industries.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a continuous long glass fiber reinforced polyoxymethylene material and a preparation method thereof. The material replaces metal materials with similar performance with the characteristics of light weight and high strength, and becomes the main method for realizing the lightweight of automobiles. one of the ways. Background technique [0002] Polyoxymethylene is a kind of thermoplastic with excellent mechanical properties, specific strength and specific stiffness close to metal and good dimensional stability. It is an ideal engineering plastic that can replace metal, especially copper, aluminum, zinc and other non-ferrous metals and alloy products. , Are widely used in electrical and electronic, automotive and other industries. [0003] "High performance and low cost" has become an important criterion for POM modification. The material is often required to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L59/00C08K7/14C08K5/3492C08K5/315
Inventor 李齐方付瑶丁筠吴保章傅全乐李宁陈广新魏灵朝田一政赵利军宋灿曹志魁
Owner 河南能源集团研究总院有限公司
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