Composite nylon material and preparation thereof

A nylon and coupling agent technology, applied in the field of preparation of the composite nylon material, can solve problems such as poor mechanical properties of reinforced nylon and poor high temperature resistance, and achieve good mechanical properties, improved mechanical properties, and improved flexural strength and flexural modulus. Effect

Active Publication Date: 2009-01-21
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the defects of the poor mechanical properties and high temperature resistance of reinforced nylon in the above-mentioned prior art, and provide a composite nylon material that can improve the mechanical properties and high temperature resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] According to the preparation method of the composite nylon material provided by the present invention, (1) nylon is heated to melting, then mixed with the asbestos fiber treated with the coupling agent or the glass fiber treated with the coupling agent and extruded and pelletized to obtain Asbestos fiber toughened nylon or glass fiber reinforced nylon; (2) the asbestos fiber toughened nylon or glass fiber reinforced nylon is heated to melting, then mixed with glass fiber treated with coupling agent or with coupling agent The treated asbestos fibers are mixed and extruded.

[0025] According to the method provided by the present invention, the method of treating asbestos fiber or glass fiber with coupling agent can be various methods known to those skilled in the art, such as spraying method. The spraying method includes diluting 1.5-2.5% by weight coupling agent equivalent to asbestos fiber or glass fiber twice with industrial ethanol, and then adding 25-30% by weight a...

Embodiment 1

[0036] 1. Treat talcum powder and asbestos fiber with coupling agent respectively

[0037] Treat 3kg of talcum powder and 3kg of asbestos fiber (Qinghai Mangya Asbestos Mine, M3-80) respectively, and the glass fiber is the glass fiber that has been treated with a coupling agent at the time of purchase (Jushi Group, 988-A type).

[0038] Add 45ml of coupling agent KH550 into the beaker, then add 20ml of ethanol, stir evenly, add 11.25ml of acetic acid solution dropwise while stirring, continue stirring for 10 minutes after the dropwise addition, and prepare two solutions accordingly. Then spray the two solutions obtained on the talc powder and asbestos fiber respectively, put the sprayed talc powder into a high mixer and mix for 15 minutes, the asbestos fiber does not need to be mixed, and then put them in an oven for drying at 120°C 1 hour.

[0039] 2. Toughening of nylon

[0040] After 2.5 kilograms of nylon 6 were air-dried at 85° C. in an oven for 6 hours, this nylon 6 wa...

Embodiment 2

[0046] 1. Treat talcum powder and asbestos fiber with coupling agent respectively.

[0047] The talcum powder and asbestos fibers were treated according to the treatment method in Example 1, except that the coupling agent KH570 was used instead of the coupling agent KH550. And adopt the glass fiber identical with embodiment 1.

[0048] 2. Toughening of nylon

[0049] After 1.75 kilograms of nylon 66 were air-dried at 90° C. in an oven for 5 hours, the nylon 66 was mixed with 0.5 kilograms of talcum powder, 1.5 grams of antioxidant 1098 and 1.5 grams of antioxidant 168 and 15 grams of TAF was added to the high mixer and mixed for 2 minutes.

[0050] The mixed material is added in the feed port of the twin-screw extruder, heated and melted, and 0.05 kg of coupling agent-treated short-chrysotile fibers (Qinghai Mangya Asbestos Mine, M3-80) are added in the side feed port. Extrude and pelletize to obtain asbestos fiber-toughened nylon pellets.

[0051] 3. Reinforcement of nylo...

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PUM

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Abstract

The invention relates to a compound nylon material. The compound nylon material contains nylon, glass fiber and coupling agents, wherein the compound nylon material also contains asbestos fiber. The invention also relates to a method for preparing the compound nylon material. The compound nylon material provided by the invention is good in both mechanical properties and high temperature resistance.

Description

technical field [0001] The invention relates to a composite nylon material and a preparation method of the composite nylon material. Background technique [0002] The scientific name of nylon is polyamide resin (PA), its amide group is polar, and there are strong hydrogen bonds in its structure, which makes nylon have a high melting point, excellent mechanical properties, good wear resistance and Self-lubrication and good corrosion resistance, so nylon is widely used in automobiles, machinery, electronic appliances, chemicals and other fields. [0003] However, pure nylon has the disadvantages of low heat distortion temperature, high water absorption, poor water resistance, poor impact resistance in dry and low temperature conditions, and unstable dimensions, which makes its comprehensive performance low and limits its wider application. application. At present, filling reinforcement modifiers are usually used to reduce the water absorption of nylon, while increasing the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08K7/14C08K3/34C08K5/56C08K5/54C08K5/20
Inventor 李玉冰董俊卿
Owner BYD CO LTD
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