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High-strength and high-toughness polyamide/polyester alloy, preparation method and application thereof

A technology of polyester alloy and polyamide, applied in the field of modified plastics, can solve the problems that the alloy does not have practical use value and cannot meet the application requirements of engineering grade, and achieves the effects of high toughness, improved compatibility and increased strength

Inactive Publication Date: 2013-09-18
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] CN100448930C has prepared the blend alloy by reclaiming polyethylene terephthalate and polyamide 66 blending, but the notched impact strength of the alloy reinforced by 40 parts of glass fibers is only 11.5kJ / m 2 , can not meet the engineering-level application requirements, and the prepared alloy has no practical use value

Method used

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  • High-strength and high-toughness polyamide/polyester alloy, preparation method and application thereof
  • High-strength and high-toughness polyamide/polyester alloy, preparation method and application thereof
  • High-strength and high-toughness polyamide/polyester alloy, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A high-strength, high-toughness polyamide / polyester alloy prepared by the following steps:

[0052] (1) PA6 and PET are dried respectively;

[0053] (2) Dry PA6 (95wt%, viscosity 1.8dL / g) and PET (3%, viscosity 0.6dL / g) with sodium benzenesulfonate (0.5wt%), maleic anhydride grafted polypropylene (0.5wt%), auxiliary agent (made up of antioxidant 1098, lubricant polyethylene wax and nucleating agent superfine talcum powder) (1wt%) is added to the extruder by weight loss metering after mixing by high-speed mixer , Extruded and granulated to obtain a high-strength, high-toughness polyamide / polyester alloy. The settings of the twin-screw extruder are as follows: the temperature of the first zone of the twin-screw extruder is 120-140°C, the temperature of the second zone is 260-270°C, the temperature of the third zone is 240-250°C, the temperature of the fourth zone is 240-250°C, and the temperature of the fifth zone The temperature is 240-250°C, the six-zone temperature i...

Embodiment 2

[0056] A high-strength, high-toughness polyamide / polyester alloy prepared by the following steps:

[0057] (1) PA12 and PBT are dried respectively;

[0058] (2) PA12 after drying (60wt%, viscosity is 2.5dL / g) and PBT (35wt%, viscosity is 0.9dL / g) and potassium benzenesulfonate (2wt%), maleic anhydride grafted polyethylene ( 2wt%), auxiliary agent (consisting of antioxidant 1098 and lubricant polyethylene wax) (1wt%) is mixed by a high-speed mixer and then added to the extruder by weight loss metering, extruded and granulated to obtain high strength, High toughness polyamide / polyester alloy. The settings of the twin-screw extruder are as follows: the temperature of the first zone of the twin-screw extruder is 120-140°C, the temperature of the second zone is 260-270°C, the temperature of the third zone is 240-250°C, the temperature of the fourth zone is 240-250°C, and the temperature of the fifth zone The temperature is 240-250°C, the six-zone temperature is 260-270°C, the head ...

Embodiment 3

[0061] A high-strength, high-toughness polyamide / polyester alloy prepared by the following steps:

[0062] (1) PA66 and PET are dried separately;

[0063] (2) PA66 after drying (42wt%, viscosity is 3.0dL / g) and PET (42wt%, viscosity is 0.7dL / g) and polyester ionomer (Du Pont Company, Surlyn 9320) (7wt%), Maleic anhydride grafted polystyrene (8wt%), auxiliary agent (composed of antioxidant 1098, lubricant polyethylene wax and nucleating agent ultra-fine talcum powder) (1wt%) passed through the weight loss formula after mixing by high-speed mixer The metering scale is added to the extruder, extruded and granulated to obtain a high-strength, high-toughness polyamide / polyester alloy. The settings of the twin-screw extruder are as follows: the temperature of the first zone of the twin-screw extruder is 120-140°C, the temperature of the second zone is 260-270°C, the temperature of the third zone is 240-250°C, the temperature of the fourth zone is 240-250°C, and the temperature of t...

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Abstract

The invention discloses a high-strength and high-toughness polyamide / polyester alloy, a preparation method and an application thereof. The high-strength and high-toughness polyamide / polyester alloy is prepared from 1-97 % of the polyamide, 1-97 % of the polyester, 1-20 % of a compatibilizer and 1 % of an additive, wherein the polyamide has an intrinsic viscosity of 1.8-3.0 dL / g, the polyester has an intrinsic viscosity of 0.6-0.9 dL / g, and the compatibilizer is selected from more than one of polymer ionomer, polyamide-polyester block copolymer, phenyl sulfonate, epoxy resin, maleic anhydride grafted copolymer or elastomer containing rubber phase. By using the polyamide and polyester resin with specific viscosity, and the compatibilizer provided in the invention, compatibility of the above resin can be effectively improved, so that the above blends has relatively high toughness and strength.

Description

technical field [0001] The invention relates to the field of modified plastics, in particular to a high-strength, high-toughness polyamide / polyester alloy and a preparation method and application thereof. Background technique [0002] Due to its special molecular structure, polyamide has excellent mechanical properties, self-lubricating properties and thermal stability. As an engineering plastic, it is widely used in the fields of automobiles, electronic appliances, machinery and sports equipment. However, polyamide has disadvantages such as high molding shrinkage rate and high water absorption rate, which make the dimensional stability of the prepared parts poor, which limits the use of polyamide. [0003] Glass fiber reinforced polyamide can significantly improve the mechanical properties of polyamide, but the inherent molding shrinkage and high water absorption of polyamide are difficult to be effectively solved by glass fiber filling. The polyamide / polyester alloying ca...

Claims

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Application Information

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IPC IPC(8): C08L77/00C08L77/02C08L77/06C08L67/00C08L67/02C08L23/00C08L63/00C08L51/06C08L51/08C08L53/02C08L51/00C08K5/42B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/875B29C48/92B29C2948/92514B29C2948/92704B29C2948/92895B29C2948/92904
Inventor 谭麟陈大华梁惠强郑一泉岑茵赵建青宁凯军
Owner KINGFA SCI & TECH CO LTD
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