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Preparation method of high-intensity heat-proof long glass fiber/nylon 6/nylon 66 composite material

A composite material and long glass fiber technology, applied in the field of preparation of a high-strength and heat-resistant long glass fiber/nylon 6/nylon 66 composite material, can solve the problems of low dimensional stability, poor thermal stability, limited nylon, etc. Improve mechanical properties, improve heat resistance, good heat resistance effect

Inactive Publication Date: 2018-05-18
MIANYANG HONGQI NEW MATERIAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a large number of polar groups contained in nylon molecules make it vulnerable to environmental factors such as moisture, ultraviolet rays, and temperature, and its molecular chains soften and melt at lower temperatures, and even decompose and oxidize, resulting in high water absorption, The disadvantages of low dimensional stability, poor thermal stability, easy fatigue, and easy deformation greatly limit the practical application of nylon

Method used

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  • Preparation method of high-intensity heat-proof long glass fiber/nylon 6/nylon 66 composite material
  • Preparation method of high-intensity heat-proof long glass fiber/nylon 6/nylon 66 composite material
  • Preparation method of high-intensity heat-proof long glass fiber/nylon 6/nylon 66 composite material

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Effect test

Embodiment 1

[0033] A preparation method of high-strength heat-resistant long glass fiber / nylon 6 / nylon 66 composite material, comprising the following steps:

[0034] a. Raw material pretreatment, batching and mixing:

[0035] Take raw materials nylon 6 (abbreviated as PA6) and nylon 66 (abbreviated as PA66), dry at 95°C for 8 hours; take alkali-free long glass fiber (abbreviated as LGF);

[0036] Take 50 parts by weight of nylon 6 (abbreviated as PA6) after drying, 18.7 parts by weight of nylon 66 (abbreviated as PA66), 1.0 parts by weight of PP-g-MAH, and 0.3 parts by weight of high temperature resistant thermal oxygen stabilizer, and mix them uniformly to obtain a mixture Get the long glass fiber (being called for short LGF, long glass fiber) of 30 weight parts, standby;

[0037] b. The mixture is melted, extruded, and dried: pour the mixture into a high-speed (preferably 100r / min) mixer, (high-speed) stir and mix for 5 minutes, so that nylon 6 and nylon 66 are evenly dispersed in oth...

Embodiment 2

[0044] A preparation method of high-strength heat-resistant long glass fiber / nylon 6 / nylon 66 composite material, comprising the following steps:

[0045] a. Raw material pretreatment, batching and mixing:

[0046] Take raw materials nylon 6 (abbreviated as PA6) and nylon 66 (abbreviated as PA66), dry at 95°C for 8 hours; take alkali-free long glass fiber (abbreviated as LGF);

[0047] Get dried raw material nylon-6 (abbreviated as PA6) 44 parts by weight, nylon-66 (abbreviated as PA66) 14.1 parts by weight, PP-g-MAH 1.5 parts by weight, HQW thermal oxygen stabilizer 0.4 parts by weight, mix uniformly, get mixed Material; Get the long glass fiber of 40 weight parts, standby;

[0048] b. The mixture is melted, extruded, and dried: pour the mixture into a high-speed (preferably 100r / min) mixer, (high-speed) stir and mix for 5 minutes, so that nylon 6 and nylon 66 are evenly dispersed in other In the raw materials, the mixture is added to the feeding funnel of the twin-screw ex...

Embodiment 3

[0055] A preparation method of high-strength heat-resistant long glass fiber / nylon 6 / nylon 66 composite material, comprising the following steps:

[0056] a. Raw material pretreatment, batching and mixing:

[0057] Take raw materials nylon 6 (abbreviated as PA6) and nylon 66 (abbreviated as PA66), dry at 95°C for 8 hours; take alkali-free long glass fiber (abbreviated as LGF);

[0058] Get dried raw material nylon-6 (abbreviated as PA6) 47 parts by weight, nylon-66 (abbreviated as PA66) 14 parts by weight, 3.0 parts by weight of PP-g-MAH, 0.4 parts by weight of HQW thermal oxygen stabilizer, anhydrous calcium chloride 0.6 parts by weight, uniformly mixed, to obtain a compound; get 35 parts by weight of long glass fiber, for subsequent use;

[0059] b. The mixture is melted, extruded, and dried: pour the mixture into a high-speed (preferably 100r / min) mixer, (high-speed) stir and mix for 5 minutes, so that nylon 6 and nylon 66 are evenly dispersed in other In the raw material...

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Abstract

The invention discloses a preparation method of a high-intensity heat-proof long glass fiber / nylon 6 / nylon 66 composite material, which is characterized by comprising the following materials: taking 30 to 50 parts by weight of nylon 6, 10 to 20 parts by weight of nylon 66, 0.2 to 0.8 part by weight of high-temperature resistance heat stabilizer, 1 to 3 parts by weight of PP-g-MAH, 0 to 0.8 part byweight of calcium chloride anhydrous and mixing; pouring a mixture into a mixer to stir for 3 to 8min, then adding the obtained product into a double-screw extruder, carrying out melting on the mixture under a screw rotating speed of 200 to 300r / min and at a temperature of 260 to 270 DEG C, adding long glass fibers from a glass fiber inlet of the double-screw extruder, carrying out mixing, extrusion, cooling and grain cutting with the molten mixture and then drying particles to prepare the long glass fiber / nylon 6 / nylon 66 composite material with high-intensity heat-proof performance. The high-intensity heat-proof long glass fiber / nylon 6 / nylon 66 composite material can be used as an engine manifold material and a windscreen wiper base material in the automobile industry and can also be used for electronic appliances and the mechanical industry.

Description

technical field [0001] The invention belongs to the preparation of glass fiber reinforced polymer composite materials, and relates to a preparation method of a high-strength and heat-resistant long glass fiber / nylon 6 / nylon 66 composite material. The long glass fiber / nylon 6 / nylon 66 composite material prepared by the present invention has the characteristics of high mechanical strength and good heat resistance, and can be used as the manifold material of the engine, the material of the wiper seat, and in the fields of electronic appliances, machinery, etc. . Background technique [0002] In the prior art, there are generally two kinds of materials used for engine intake pipes (or manifolds, intake manifolds). One is aluminum alloy, which has the advantages of light weight and high strength, but the blank formed during casting is relatively rough. , the inner wall of the intake pipe is uneven, which has a greater impact on the intake air; the other is plastic, which is ligh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08L51/06C08K13/04C08K7/14C08K5/098C08K3/16C08K5/18
CPCC08K2003/162C08K2201/014C08L77/02C08L2201/08C08L2205/03C08L2205/08C08L77/06C08L51/06C08K13/04C08K7/14C08K5/098C08K3/16C08K5/18
Inventor 曾学良汪学军刘才林陈文姣
Owner MIANYANG HONGQI NEW MATERIAL SCI & TECH
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