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Plastic alloy for washing machine cover plate and preparation method of plastic alloy

A technology of washing machine cover plate and plastic alloy, applied in the field of plastics, can solve the problems of difficult injection molding, low elongation rate, expensive equipment, etc.

Active Publication Date: 2016-06-22
宁波海飞电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the processing fluidity of ABS engineering plastics is poor, and it is difficult to injection molding. Moreover, ABS engineering plastics have poor solvent resistance, no weather resistance, and low elongation rate. The equipment for ABS injection molding is expensive and the cost of injection molding is high.

Method used

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  • Plastic alloy for washing machine cover plate and preparation method of plastic alloy
  • Plastic alloy for washing machine cover plate and preparation method of plastic alloy
  • Plastic alloy for washing machine cover plate and preparation method of plastic alloy

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preparation example Construction

[0068] Correspondingly, the present invention also provides a method for preparing a plastic alloy for a washing machine cover, comprising the following steps: dissolving 6-10 parts by weight of a KH550 type silane coupling agent in a solvent, and then adding 12-18 parts by weight of glass fiber, 3-6 parts by weight of silicon dioxide and 3-4 parts by weight of wollastonite, stirring, adding ammonia water after heating up, continuing to stir, removing excess solvent, and drying to obtain the first mixture; 55-80 parts by weight of polyoxymethylene, 20- 30 parts by weight of polyethersulfone, 12-16 parts by weight of polysulfone, 12-18 parts by weight of TPU, 6-10 parts by weight of modified SEBS, 4-8 parts by weight of PBT and 5-8 parts by weight of ethylene-vinyl acetate copolymer , after stirring, the second mixture is obtained; the second mixture is heated, and then the first mixture and 1-2 parts by weight of anti-aging agent are added, and the third mixture is obtained aft...

Embodiment 1

[0088] The raw material formula of modified SEBS and preparation method thereof are as follows:

[0089] formula:

[0090] SEBS45 parts by weight;

[0091] 12 parts by weight of polyvinyl chloride rubber;

[0092] 8 parts by weight of plasticizer;

[0093] 2 parts by weight of compatibilizer;

[0094] 4 parts by weight of titanium dioxide;

[0095] 3 parts by weight of titanate coupling agent;

[0096] The preparation process is as follows:

[0097] 1. Weigh raw materials by weight;

[0098] 2. Put all the raw materials into a high-speed mixer and mix for 15 minutes, then discharge;

[0099] 3. Put the mixed raw materials into a screw machine to extrude and granulate to obtain modified SEBS. The rotation speed of the screw machine is 400rpm, and the temperature is set at 200°C.

[0100] The raw material formula and preparation process of composite engineering plastic alloy are as follows:

[0101] formula:

[0102] 65 parts by weight of polyoxymethylene;

[0103] 25...

Embodiment 2

[0122] The raw material formula of modified SEBS and preparation method thereof are as follows:

[0123] formula:

[0124] SEBS45 parts by weight;

[0125] 12 parts by weight of polyvinyl chloride rubber;

[0126] 12 parts by weight of plasticizer;

[0127] 3 parts by weight of compatibilizer;

[0128] 5 parts by weight of titanium dioxide;

[0129] 3 parts by weight of titanate coupling agent;

[0130] The preparation process is as follows:

[0131] 1. Weigh raw materials by weight;

[0132] 2. Put all the raw materials into a high-speed mixer and mix for 20 minutes, then discharge;

[0133] 3. Put the mixed raw materials into the screw machine to extrude and granulate. The speed of the screw machine is 300rpm, and the temperature is set at 180°C;

[0134] The raw material formula and preparation process of composite engineering plastic alloy are as follows:

[0135] formula:

[0136] POM 66 parts by weight;

[0137] 24 parts by weight of polyethersulfone;

[0138...

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Abstract

The invention provides a plastic alloy for a washing machine cover plate and a preparation method of the plastic alloy. The following raw materials are adopted: polyformaldehyde, polyether sulfone, polysulfone, TPU, glass fiber, PBT, a KH550 type silane coupling agent, modified SEBS, silica, an ethylene-vinyl acetate copolymer, wollastonite and an anti-ageing agent. The TPU has extremely high adhesion so that the oil resistance and solvent resistance of the whole elastomer are obviously improved, and a molecular chain contains polarity and active carbamate, carbimide and various radicals, and can be interspersed into the SEBS; the polyether sulfone has the comprehensive properties of being good in size stability, resistant to corrosion, resistant to creep and the like, and the heat resistance of the polyformaldehyde system is improved; the polysulfone improves the hardness and strength of the polyformaldehyde system; and the modified SEBS is easy to form a network structure, so that the whole system has excellent processing fluidity. The experiment result shows that the plastic alloy for the washing machine cover plate, prepared by the preparation method, has good processing fluidity and mechanical properties.

Description

technical field [0001] The invention relates to the technical field of plastics, in particular to a plastic alloy for a washing machine cover plate and a preparation method thereof. Background technique [0002] The shell of the washing machine cover mainly includes two types, the first one is a stainless steel shell. The washing machine cover made of stainless steel has the advantage of high strength, but has the disadvantage of high cost. Moreover, the stainless steel shell is made of iron sheet material, which has poor corrosion resistance, which leads to corrosion of the shell. Especially in the washing process, the corrosion of the body by acid and alkali substances such as washing powder cannot be avoided, so there are also disadvantages in electrical safety, and the service life is longer. short. [0003] The second type is mainly plastic cover plates, commonly used are some engineering plastics, which have strong corrosion resistance and can be placed in humid plac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L59/00C08L81/06C08L67/02C08L75/04C08L23/08C08L53/02C08K13/06C08K9/06C08K7/14C08K3/36C08K3/34
CPCC08L59/00C08L2205/02C08L2205/035C08L81/06C08L75/04C08L67/02C08L23/0853C08L53/025C08K13/06C08K9/06C08K7/14C08K3/36C08K3/34
Inventor 诸耀明
Owner 宁波海飞电器有限公司
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