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A kind of high-impact nylon pa66 composite material and its preparation method and application on automobile

A PA66, composite material technology, applied in the field of modifying a high-impact nylon PA66 composite material and its preparation, can solve the problems of insufficient strength, toughness, corrosion resistance, unstable product quality, poor surface gloss and the like, To achieve the effect of good fluidity, stable injection process and good flame retardancy

Active Publication Date: 2015-11-25
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] To prepare high impact nylon PA66 composite material, the specific steps are:

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

[0035] Weigh nylon PA6630, ACS resin 40, polycarbonate 15, aminopropyltriethoxysilane 0.2, methyltriethoxysilane 0.4, antioxidant 10100.2, isooctyl dimercaptoacetate di-n-octyltin 0.3, poly Caprolactone 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 potash feldspar powder in the same proportions, burning them at 600-700°C for 4-5 hours, then grinding into nano powders and mixing in the equivalent Stir the bis(dioctyloxy pyrophosphate) ethylene titanate with 3-5% by weight of the powder evenly, dry, and crush into powder.

[0037] After the weighed raw materials are mixed uniformly, they are sucked into a drying barrel and dried at 90-100°C for 4-6 hours;

[0038] When the water content of the mixture is less th...

Embodiment 2

[0048] Using the high-impact nylon PA66 composite material prepared in Example 1 to prepare the connector piece-type plug sheath DJ7055-3-11 for automobiles, it includes the following steps:

[0049] (1) After mixing 25kg of high-impact nylon PA66 composite material and 1.5g of yellow-green powder, add it to the dryer and dry it at 100-120℃ for 6h.

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

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

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

[0053] b. The second stage adopts 30-35Mpa medium and low pressure injection, 45-55m / s medium s...

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PUM

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Abstract

The invention discloses a high impact nylon PA66 composite material which is prepared by squeezing and prilling mixed materials A and B of modified nylon PA66. The invention further discloses an application of the modified nylon PA66 particle material on automobile parts. The preparation method mainly comprises the following steps: adding dried modified material into a heated injection molding machine; and obtaining a final qualified product by setting the injection pressure, speed, injection time and injection rubber amount in different stages of the injection molding machine as well as setting the final dwell pressure and pressure maintaining speed to reach the optimal injection moulding process. A plastic connector formed by injection moulding modified nylon PA66 particle material for the automobile has the characteristics of high impact strength, good tenacity, good fire resistance and the like. Meanwhile, the injection process is stable, the product quality is stable, the yield is high, the production efficiency is improved, and the production cost is lowered.

Description

Technical field [0001] The invention relates to the field of engineering plastics, in particular to a modified high-impact nylon PA66 composite material and a preparation method and application thereof. Background technique [0002] Nylon was developed by the outstanding American scientist Carothers (Carothers) and a scientific research team under his leadership. It is the first synthetic fiber to appear in the world. The appearance of nylon has given 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 higher performance of electronic and electrical equipment, and the acceleration of the process of lightweight mechanical equipment, the demand for nylon will ...

Claims

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Application Information

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