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Wear-resisting nylon PA66 (Polyamide) composite material and preparation method thereof as well as application of composite material in automobile

A technology of PA66 and composite materials, which is applied in the field of modifying a wear-resistant nylon PA66 composite material and its preparation, can solve problems such as insufficient strength, toughness, corrosion resistance, unstable product quality, and poor processing performance, and achieve Strong wear resistance, stable injection molding process, and good fluidity

Active Publication Date: 2015-07-15
ANHUI KAIDI ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, nylon is mainly modified by adding a toughening agent to the nylon material. However, after mixing various materials, the dispersion of each component is not good during the blending process, and the compatibility between the components is poor. Poor performance, insufficient strength, toughness and corrosion resistance, high material cost, difficult demoulding, poor surface gloss, poor processing performance, and unstable product quality. Therefore, the present invention is aimed at the deficiencies of the prior art and uses a A new formula, and a specific process, the modification of nylon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Prepare wear-resistant nylon PA66 composite material, the specific steps are:

[0034] The first step: prepare material A (kg):

[0035] Weigh nylon PA66 30, ACS resin 40, polycarbonate 15, aminopropyltriethoxysilane 0.2, methyltriethoxysilane 0.4, antioxidant 1010 0.2, graphite 7, polycaprolactone 2, Polyethylene wax 1.5, modified nano powder 6,

[0036] Among them, the modified nano powder is prepared by the following method: after mixing calcium carbonate, lapis lazuli powder, and potassium feldspar powder in equal proportions, burning at 600-700°C for 4-5 hours, then grinding into nano powder, mixing into Stir evenly with 3-5% bis(dioctyloxypyrophosphate) ethylene titanate by weight of the powder, dry and pulverize into powder,

[0037] Mix the weighed raw materials evenly, inhale into a drying barrel, and dry at 90-100°C for 4-6 hours;

[0038] When the water content of the mixture is less than 0.15%, the drying ends;

[0039] The dried mixed material is extrud...

Embodiment 2

[0048] With the wear-resistant nylon PA66 composite material that embodiment 1 makes, prepare the connector blade type plug sheath DJ7095-3-11 on the automobile, comprise the following steps:

[0049] (1) After mixing 25kg of wear-resistant nylon PA66 composite material and 1.5g of yellow-green powder evenly, add it to the dryer and dry it at 100-120°C for 6 hours.

[0050](2) Set the temperature of the heating section of the injection molding machine: the first section is 275±5°C, the second section is 270±5°C, the third section is 265±5°C, the fourth section is 260±5°C, the fifth section is 255±5°C ℃;

[0051] (3) Add the dried raw materials into the injection molding machine, and set the molding process parameters of the injection molding section:

[0052] a. The first section adopts medium and low pressure of 35-40 Mpa and medium speed injection of 45-55m / s, the injection time is 1.0-1.5 seconds, and the amount of glue injected is 78-80% of the product;

[0053] b. The s...

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PUM

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Abstract

The invention discloses a wear-resisting nylon PA66 (Polyamide) composite material. The wear-resisting nylon PA66 composite material is prepared by mixing a material A and a material B of modified nylon PA66, and then extruding and granulating. The invention also discloses application of the obtained modified nylon PA66 granules on parts of an automobile; and the application is as follows: the dried modified granules are fed into a heated injection molding machine, the injection pressure, injection speed, injection time and the amount of injected glue of the injection molding machine are adjusted based on different sections, and the final holding pressure and holding speed are adjusted at the same time, thus reaching the optimal injection molding technology, and the qualified product can be obtained by the optimal injection molding technology. An automobile plastic connector prepared by the modified nylon PA66 granules in the injection molding way has the characteristics of high impact strength, excellent toughness and high wear resistance; the injection molding technology is stable; the product is stable in quality and high in percent of pass; the production efficiency is improved; and the producing cost is reduced.

Description

technical field [0001] The invention relates to the field of engineering plastics, in particular to a modified wear-resistant nylon PA66 composite material and a preparation method and application thereof. Background technique [0002] Nylon was developed by an outstanding scientist in the United States, Carothers, and a research team under his leadership. It is the first synthetic fiber to appear in the world. The emergence of nylon has brought a new look to textiles. Its synthesis is a major breakthrough in the synthetic fiber industry and an important milestone in polymer chemistry. [0003] Because nylon has many characteristics, it is widely used in automobiles, electrical equipment, mechanical parts, transportation equipment, textiles, and papermaking machinery. [0004] With the miniaturization of automobiles, the high performance of electronic and electrical equipment, and the acceleration of the lightweight of mechanical equipment, the demand for nylon will be high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/06C08L51/00C08L69/00C08L23/20C08L67/04C08L23/06C08K13/06C08K9/06C08K9/04C08K9/02C08K3/34C08K3/26C08K3/04C08K5/5419C08K5/544C08K5/20B29C47/92B29C45/76B29C48/92
CPCB29C47/92B29C2947/92895B29C2947/92704B29C48/92B29C2948/92704B29C2948/92895
Inventor 张强
Owner ANHUI KAIDI ELECTRIC
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