Polyamide/polyester alloy and method for producing the same

A polyester alloy and polyamide technology, which is applied in the field of polyamide/polyester alloy and its preparation, can solve the problems of reduced impact resistance of the alloy, poor compatibility of two phases, etc., and achieve excellent toughness, low cost, and simple preparation process Effect

Inactive Publication Date: 2009-08-19
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, due to the poor compatibility of the two phases of the polyamide / polyester alloy, the impact resistance of the alloy will be seriously reduced, and the impact strength is 70KJ / m 2 the following

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Polyhexamethylene adipamide weight fraction is 85.1% (below are mass fraction), polyethylene terephthalate 5%, 1010 / 168 0.2 / 0.2%, toughening agent PTW 8%, phase Compatible agent 1%, other 0.5%. The mixed material is put into the hopper of the twin-screw extruder, melted and blended, extruded and granulated to form a composite material. Among them, the temperature of the first zone of the twin-screw extruder is 240-250°C, the temperature of the second zone is 250-260°C, the temperature of the third zone is 260-270°C, the temperature of the fourth zone is 260-280°C, the temperature of the fifth zone is 260-270°C, and the temperature of the sixth zone 260~270℃, head temperature 270℃, pressure 15Mpa.

Embodiment 2

[0033] The polyhexamethylene adipamide mass fraction is 79.6% (below is mass fraction), polyethylene terephthalate 10%, 1010 / 168 0.2 / 0.2%, toughening agent PTW 8%, Compatibilizer 1.5%, other 0.5%. The mixed material is put into the hopper of the twin-screw extruder, melted and blended, extruded and granulated to form a composite material. Among them, the temperature of the first zone of the twin-screw extruder is 240-250°C, the temperature of the second zone is 250-260°C, the temperature of the third zone is 260-270°C, the temperature of the fourth zone is 260-280°C, the temperature of the fifth zone is 260-270°C, and the temperature of the sixth zone 260~270℃, head temperature 270℃, pressure 15Mpa.

Embodiment 3

[0035] The polyhexamethylene adipamide mass fraction is 76.6% (below is mass fraction), polyethylene terephthalate 13%, 1010 / 168 0.2 / 0.2%, toughening agent PTW 8%, Compatibilizer 1.5%, other 0.5%. The mixed material is put into the hopper of the twin-screw extruder, melted and blended, extruded and granulated to form a composite material. Among them, the temperature of the first zone of the twin-screw extruder is 240-250°C, the temperature of the second zone is 250-260°C, the temperature of the third zone is 260-270°C, the temperature of the fourth zone is 260-280°C, the temperature of the fifth zone is 260-270°C, and the temperature of the sixth zone 260~270℃, head temperature 270℃, pressure 15Mpa.

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Abstract

The invention discloses a polyamide/ polyester alloy and a preparation method thereof. The polyamide/ polyester alloy has the components according to the mixture ratio of parts by weight: 65-87% of poly adipic acid hexanediamine, 5-20% of polyethylene glycol terephthalate, 6-10% of toughener, 1-3% of compatilizer, 0.2-0.6% of antioxidizer and 0.1-5% of other accessory ingredients. Besides having excellent toughness, the polyamide/ polyester alloy can maintain other physical mechanical property of the material. The technique for preparing the polyamide/ polyester alloy is simple and has low cost.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polyamide / polyester alloy and a preparation method thereof. Background technique [0002] The special molecular structure of polyamide (polyhexamethylene adipamide) determines that it has a series of excellent physical and mechanical properties. It has particularly good impact strength, self-lubrication, thermal stability, and its output and consumption rank first among the five major engineering plastics. However, polyamide has the disadvantages of large shrinkage, strong water absorption, poor dimensional stability, and poor long-term heat resistance. After the polyamide modified material is reinforced or filled, its water absorption rate is high, which has a significant impact on the surface appearance of the final product, so it needs to be dried and sealed before processing. At present, due to the poor compatibility of the two phases of the polyamide / polyester ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L77/12C08K5/00B29B9/00B29C47/92C08L67/02B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C48/9185B29C2948/92514B29C2948/9259B29C2948/92885B29C2948/92895B29C2948/92904
Inventor 徐东贺永杨小军
Owner SHENZHEN KEJU NEW MATERIAL
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