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Polyamide composition suitable for extrusion molding, blow molding and foaming multi uses and preparation method thereof

A technology of polyamide composition and thermoplastic polyamide, applied in the field of polyamide composition and its preparation

Inactive Publication Date: 2015-07-22
SHANGHAI KINGFA SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of polyamide composition modification that meets multiple applications and greatly improves mechanical properties has not been reported at home and abroad.

Method used

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  • Polyamide composition suitable for extrusion molding, blow molding and foaming multi uses and preparation method thereof
  • Polyamide composition suitable for extrusion molding, blow molding and foaming multi uses and preparation method thereof
  • Polyamide composition suitable for extrusion molding, blow molding and foaming multi uses and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-14

[0061] The polyamide compositions of Examples 1-14, which are suitable for extrusion blow molding and foaming multi-component applications, consist of the components listed in columns E1-E14 in Tables 1-2, respectively.

[0062] The preparation method of above-mentioned polyamide composition is:

[0063] Before extrusion, the thermoplastic polyamide resin pellets are dried to a moisture content of less than 1500 ppm, and then the ingredients are blended in proportion and put into the main feeder of the twin-screw extruder, and then extruded and pelletized by twin-screw. The processing conditions are: the temperature of the first zone is 240°C, the temperature of the second zone is 260°C, the temperature of the third zone is 260°C, the temperature of the fourth zone is 260°C, the temperature of the fifth zone is 260°C, the temperature of the sixth zone is 270°C, the temperature of the seventh zone is 270°C, and the temperature of the eight zone is 275°C. ℃, the temperature of n...

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Abstract

The present invention relates to a polyamide composition suitable for extrusion molding, blow molding and foaming multi uses, the polyamide composition is characterized by comprising 49 to 89% (by weight) of thermoplastic polyamide resin, 0.01 to 10% (by weight) of maleic anhydride copolymer, 0 to 50% (by weight) of filler, 0 to 20% (by weight) of an impact-resistant modifier and 0.1 to 2% (by weight) of an additive, wherein the maleic anhydride copolymer is prepared by alternating copolymerization or block copolymerization of maleic anhydride and one or two alkenyl-containing monomers which contain heteroatom or does not contain heteroatom. The polyamide composition has the advantages of high melt strength increase and significantly enhanced mechanical properties, is suitable for machining or molding process requiring higher melt strength, and is particularly suitable for extrusion molding, blow molding and foaming and the like.

Description

technical field [0001] The invention relates to the field of modification of polyamide compositions, and relates to a polyamide composition suitable for multiple applications of extrusion blow molding and foaming and a preparation method thereof. Background technique [0002] Due to their excellent mechanical properties, chemical resistance, processability, and thermal oxygen aging properties, polyamide compositions are often used in electronic appliances and automotive industries that have strict working environment requirements. applications are particularly common. In order to achieve the purpose of lightening, energy saving, emission reduction and cost reduction, more and more automotive metal parts are replaced by nylon. However, with the particularity of the component structure, nylon is increasingly required to meet more application processing methods, such as blow molding, extrusion, and foaming. They have simple and rapid prototyping, continuous production, high pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L77/02C08L35/00C08L53/00C08L51/06C08K13/04C08K7/14C08K3/40C08K5/18
CPCC08L77/06C08K2201/003C08K2201/004C08L77/02C08L2205/03C08L2205/08C08L35/00C08K7/14C08K5/20C08L51/06C08L53/00
Inventor 林洁龙丁正亚王定华肖军华李志路刘晓亮
Owner SHANGHAI KINGFA SCI & TECH
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