Engineering plastic with stable size, and preparation method thereof

An engineering plastics, dimensionally stable technology, applied in the field of plastics, can solve the problems of insufficient, unstable product size, easy shrinkage and deformation, etc., to achieve the effect of simple processing technology, improved processing stability, and not easy to change color.

Inactive Publication Date: 2020-05-08
广东顺威赛特工程塑料开发有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of science and technology, people's requirements for materials are also increasing. Modified engineering plastics are widely used in home appliances. PBT is a kind of engineering plastics with excellent performance. Due to its excellent mechanical strength and good heat resistance properties, electrical properties, etc. are widely used. At the same time, it is easy to warp and deform, which limits its application in some fields. The size of its products is unstable, or it is easy to shrink and deform, or warp
In the past, the ways to solve the above problems were: one is to add nucleating agent; the other is to add glass fiber or other minerals. These technical methods have a certain effect on improving the dimensional stability of PBT engineering plastics, but for some household appliances with high requirements Products, such as induction cookers, etc., these improvements are far from enough

Method used

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  • Engineering plastic with stable size, and preparation method thereof
  • Engineering plastic with stable size, and preparation method thereof
  • Engineering plastic with stable size, and preparation method thereof

Examples

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Effect test

no. 1 example

[0027] The dimensionally stable engineering plastics include 40-70% of PBT, 5%-30% of PET, 3%-10% of compatibilizer, 10%-30% of glass fiber, 5%-25% of mica, flame retardant 10% to 20% of antioxidants, 0.1% to 0.5% of primary antioxidants, 0.1% to 0.5% of auxiliary antioxidants and 0.1% to 0.5% of lubricants. This engineering plastic blends PBT and PET with alloys, which not only maintains the excellent properties of the original polymers, but also improves the performance of the respective polymers. The PBT material obtained by blending PBT and PET has both dimensional stability. Good, and has good heat resistance and processability. At present, many electrical appliances such as the upper cover of the induction cooker use PBT / PET alloy engineering materials.

[0028] The compatibilizer is a compound mixture of ABS-g-MAH; ABS resin is acrylonitrile-butadiene-styrene terpolymer, which has good dimensional stability, and ABS-g-MAH is a good compatibilizer , can increase the com...

no. 2 example

[0044] This dimensionally stable engineering plastic is different from the first embodiment in that it includes 50% by weight of PBT, 15% of PET, 3% of compatibilizer, 10% of glass fiber, 10% of mica, and 9% of decabromodiphenylethane , antimony trioxide 3%, primary antioxidant 0.15%, auxiliary antioxidant 0.15% and lubricant 0.5%.

[0045] Other parts not described are the same as those of the first embodiment, and will not be analyzed and described here.

no. 3 example

[0047] This dimensionally stable engineering plastic is different from the first embodiment in that it includes 45% by weight of PBT, 15% of PET, 3% of compatibilizer, 10% of glass fiber, 15% of mica, and 9% of decabromodiphenylethane , antimony trioxide 3%, primary antioxidant 0.15%, auxiliary antioxidant 0.15% and lubricant 0.5%.

[0048] Other parts not described are the same as those of the first embodiment, and will not be analyzed and described here.

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Abstract

The invention discloses an engineering plastic with stable size, and a preparation method thereof. The engineering plastic comprises, by weight, 40-70% of PBT, 5-30% of PET, 3-10% of a compatilizer, 10-30% of a glass fiber, 5-25% of mica, 10-20% of a flame retardant, 0.1-0.5% of a main antioxidant, 0.1-0.5% of an auxiliary antioxidant and 0.1-0.5% of a lubricant. The mica and glass fiber components are added into the PBT system, so that the rigidity of the material can be improved, the size shrinkage rate of the product can be reduced, and the hardness and wear resistance of the product can beremarkably improved; besides, the PET component is added into the PBT system, so that the buckling deformation of the material can be improved, the size shrinkage rate of the product can be reduced,the molding processing stability of a workpiece can be improved, the temperature resistance can be improved, and the material cost can be reduced; and in addition, after the compatilizer is added, themica, the glass fiber and the PBT have good compatibility, and the impact strength of the alloy material can be greatly improved.

Description

technical field [0001] The invention relates to a plastic, in particular to a dimensionally stable engineering plastic and a preparation method thereof. Background technique [0002] With the rapid development of science and technology, people's requirements for materials are also increasing. Modified engineering plastics are widely used in home appliances. PBT is a kind of engineering plastics with excellent performance. Due to its excellent mechanical strength and good heat resistance At the same time, it is easy to warp and deform, which limits its application in some fields. The size of its products is unstable, or it is easy to shrink and deform, or warp. In the past, the ways to solve the above problems were: one is to add nucleating agent; the other is to add glass fiber or other minerals. These technical methods have a certain effect on improving the dimensional stability of PBT engineering plastics, but for some household appliances with high requirements Products,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L55/02C08L101/00C08K13/04C08K7/14C08K3/34C08K3/22C08K5/03C08K5/134C08K5/526
CPCC08L67/02C08L2201/08C08L2205/025C08L2205/035C08L2205/08C08L55/02C08L101/00C08K13/04C08K7/14C08K3/34C08K3/2279C08K5/03C08K5/1345C08K5/526
Inventor 白福青晏伟胡天赐
Owner 广东顺威赛特工程塑料开发有限公司
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