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A kind of plastic alloy for shell of washing machine and preparation method thereof

A technology for plastic alloys and washing machines, applied in the field of plastics, can solve the problems of poor weather resistance and solvent resistance, difficult to meet production requirements, poor processing fluidity, etc., to achieve good fluidity, improve fatigue and aging resistance, and process fluidity. boosted effect

Active Publication Date: 2018-04-13
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

[0004] However, the commonly used ABS engineering plastics have poor processing fluidity and difficult injection molding, so the requirements for equipment are high and precise. The implementation of ABS injection molding process still has defects such as complicated process steps, long cycle and high cost, and the quality of the obtained products is not high. Difficult to meet people's production requirements
In addition, the weather resistance and solvent resistance of ABS engineering plastics are relatively poor, and they have low elongation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0073] Correspondingly, the present invention also provides a method for preparing a plastic alloy for a washing machine casing, comprising the following steps: dissolving 6-10 parts by weight of a KH792 type silane coupling agent in a solvent, and then adding 3-5 parts by weight of molybdenum disulfide and 3-4 parts by weight of wollastonite are reacted, excess solvent is removed, and the first mixture is obtained after drying; 55-75 parts by weight of chlorinated polyether, 12-16 parts by weight of polyamide, 16-18 parts by weight of polyphenylene sulfide , 12-18 parts by weight of aramid fiber, 3-5 parts by weight of polybutylene terephthalate and 5-8 parts by weight of ethylene-vinyl acetate copolymer are mixed, and the second mixture is obtained after stirring; the second The mixture is heated to 70-80°C, then the first mixture, 1-2 parts by weight of antioxidant and 1-3 parts by weight of lubricant are added, and the third mixture is obtained after stirring; the third mix...

Embodiment 1

[0088] The raw material formulation of the composite engineering plastic alloy is as follows, in parts by weight:

[0089] 58 parts of chlorinated polyether;

[0090] 14 parts of polyamide;

[0091] 16 parts of polyphenylene sulfide;

[0092] 13 parts of aramid fiber;

[0093] 3 copies of PBT;

[0094] KH792 7 copies;

[0095] 4 parts of molybdenum disulfide;

[0096] 5 parts of ethylene-vinyl acetate copolymer (EVA);

[0097] 3 parts wollastonite;

[0098] Antioxidant 2 parts;

[0099] 1 part lubricant;

[0100] The preparation process of composite engineering plastic alloy and its injection molding process are as follows:

[0101] Step 1, pretreat molybdenum disulfide and wollastonite, dissolve KH792 of corresponding weight in 40 parts by weight of ethanol solvent, add molybdenum disulfide and wollastonite of corresponding weight parts and stir at room temperature for 45min, heat up to Continue stirring at 60°C for 30 minutes to ensure the coupling of the silane co...

Embodiment 2

[0108] The raw material formulation of the composite engineering plastic alloy is as follows, in parts by weight:

[0109] 65 parts of chlorinated polyether;

[0110] 14 parts of polyamide;

[0111] 16 parts of polyphenylene sulfide;

[0112] Aramid fiber 16 parts

[0113] 4 copies of PBT;

[0114] KH792 7 copies;

[0115] Molybdenum disulfide 4 parts

[0116] 7 parts of ethylene-vinyl acetate copolymer (EVA);

[0117] 4 parts wollastonite;

[0118] Antioxidant 2 parts;

[0119] 2 parts lubricant;

[0120] The preparation process of composite engineering plastic alloy and its injection molding process are as follows:

[0121] Step 1, pretreat molybdenum disulfide and wollastonite, dissolve KH792 of corresponding weight in 40 parts by weight of ethanol solvent, add molybdenum disulfide and wollastonite of corresponding weight parts and stir at room temperature for 60min, heat up to Continue stirring at 60°C for 30 minutes to ensure the coupling of the silane coupling ag...

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Abstract

The invention provides a plastic alloy used for a shell of a washing machine and a preparation method thereof. The plastic alloy used for the shell of the washing machine is prepared from the following raw materials: chlorinated polyether, polyamide, polyphenylene sulfide, aramid fibers, polybutylene terephthalate, a KH792 type silane coupling agent, molybdenum disulfide, ethylene-vinyl acetate copolymer, wollastonite, an antioxidant and a lubricating agent. Compared with the prior art, chlorinated polyether has unique chemical stability, heat resistance, abrasion resistance, extremely low water absorbency and gas permeability; self-lubricating property of polyamide improves the processing fluidity of the whole composite plastic alloy; and polyphenylene sulphide improves the processing fluidity and fatigue aging resistance of the whole composite plastic alloy; secondly, aramid fiber is used for filling modification of chlorinated polyether, polyphenylene sulphide and polyamide, so that mechanical properties and thermal deformation temperature of the whole system are improved, and cost is reduced; and thirdly, ethylene-vinyl acetate copolymer is added, so that the mechanical properties and processing fluidity of the composite plastic alloy are greatly enhanced.

Description

technical field [0001] The invention relates to the technical field of plastics, in particular to a plastic alloy for a washing machine casing and a preparation method thereof. Background technique [0002] At present, a drum washing machine includes a casing, an outer tub and an inner tub inside the outer tub. There are two kinds of shells commonly used for washing machines. The first one is raw zinc steel shell. The shell of this material has the advantages of high strength and shockproof, but it has the disadvantage of high cost. At the same time, due to the iron sheet and stainless steel materials in the manufacturing process All can consume a large amount of resources, so also have the defective that is unfavorable for environmental protection. In addition, the corrosion resistance of the iron sheet material is poor, which leads to the corrosion of the shell, especially in the washing process, the acid and alkali corrosion of the body cannot be avoided, and there are a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L71/00C08L77/00C08L81/02C08L77/10C08L67/02C08L23/08C08K13/06C08K9/06C08K3/30C08K3/34
CPCC08L71/00C08L2201/08C08L2205/035C08L2205/16C08L77/00C08L81/02C08L77/10C08L67/02C08L23/0853C08K13/06C08K9/06C08K2003/3009C08K3/34
Inventor 诸耀明
Owner 宁波海飞电器有限公司
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