Polyamide alloy and application thereof

A polyamide and aliphatic polyamide technology, applied in the field of polyamide alloys, can solve the problems of high manufacturing cost, difficult wear resistance and low temperature flexibility, expensive polymerization equipment required for manufacturing, etc., and achieve simple preparation method and low cost , high tear resistance and energy recovery effect

Inactive Publication Date: 2011-06-01
EI DU PONT DE NEMOURS & CO
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Although conventional existing polyether block amide polymer resins used in the manufacture of sports shoes have excellent properties, this polyether block amide polymer resin is obtained by copolymerization in a reactor, and its manufacture requires Expensive polymerization equipment, resulting in high manufacturing costs
[0007] In view of the above-mentioned shortcomings of existing polyether block amide polymer resins, various other modified nylons have been proposed in the art to replace polyether block amide polymer resins, but existing modified nylons are difficult to At the same time, good wear resistance and low temperature flexibility are obtained, so that there is still a large difference between these modified nylon and polyether block amide polymer resins

Method used

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  • Polyamide alloy and application thereof
  • Polyamide alloy and application thereof
  • Polyamide alloy and application thereof

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preparation example Construction

[0076]2. Sample preparation: Select a suitable mold according to the requirements of the test, and the extruded particles are plasticized by an injection molding machine and molded at a processing temperature of 240-260°C. The formed samples are subjected to various tests according to the actual situation.

[0077] Compared with existing polyether block amide polymer resins, the polyamide alloy described herein does not require expensive special polymerization equipment, thereby greatly reducing its manufacturing cost.

[0078] In addition, the polyamide alloy described herein has similar properties to existing polyether block amide polymer resins (hereinafter referred to as existing resins): its Shore D hardness (ASTM D 2240) is 64-68D ( Existing resin is 60-66D), specific gravity (ASTM D 297) is 0.99-1.01 (existing resin is 0.98-1.02), tensile strength (ASTM D 412) is 333-373 (existing resin is 380kg / cm 2 ), elongation at breaking point (ASTM D 412) is 159-190% (300% for ...

Embodiment

[0081] The following products were used as starting materials in the following examples:

[0082]

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Abstract

The invention discloses a polyamide alloy. The polyamide alloy comprises (a) 50 to 80 weight percent of at least one kind of aliphatic polyamide, and (b) 20 to 50 weight percent of ethylene copolymer mixture, wherein the ethylene copolymer mixture comprises at least two of the following components: (i) ethylene/olefin copolymer subjected to graft modification, (ii) ethylene propylene rubber subjected to graft modification, and (iii) styrene rubber; the ethylene/olefin copolymer to be subjected to graft modification before graft modification comprises 60 to 92 weight percent of comonomer unit from ethylene and 8 to 40 weight percent of one or more kinds of comonomer units from C4 to C10 alkene; and the ethylene propylene rubber to be subjected to graft modification before graft modification comprises 45 to 80 weight percent of comonomer unit from the ethylene, 20 to 55 weight percent of comonomer unit from propylene and 0 to 20 weight percent of one or more kinds of comonomer units from C5 to C10 non-conjugated chain alkadiene.

Description

technical field [0001] This paper relates to a polyamide alloy with excellent elastic properties and dynamic mechanical properties (high energy recovery) as well as excellent wear resistance and low temperature flexural properties, which is also characterized by easy processing and low cost. This document also relates to the use of said polyamide alloy in the manufacture of elastic articles. Background technique [0002] Polyether block amide polymer resin (poly ether-amide block copolymer) is a kind of copolymer with A-B alternating structure. In a common polyether block amide polymer resin, its hard segment A can be, for example, poly Amide 12, while soft segment B may be, for example, poly 1,4-diol. This existing polymer resin has excellent properties such as good abrasion resistance and low temperature flexibility, and is widely used in the manufacture of articles such as sports shoes, anti-fall cushions, etc., and as a thermoplastic elastomer for molding Used in the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L77/02C08L77/06C08L51/06C08L51/04
CPCC08L77/02C08G69/36C08L77/00C08L53/00C08L25/00C08L51/00C08L23/00
Inventor 应磊刘畅赵民骥张大为
Owner EI DU PONT DE NEMOURS & CO
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