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Polyamide composition and preparation method thereof

A polyamide composition and polyamide technology, applied in the field of engineering plastics modification, can solve the problems of high price of toughened nylon and high requirements for the preparation process of toughened nylon, and achieve the effects of high cost performance, low cost and simple preparation process

Inactive Publication Date: 2013-04-24
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of high price of existing toughened nylon, to provide a polyamide composition with lower cost, which is mainly used in the middle and low-end fields of toughened nylon
[0005] Another object of the present invention is to provide a method for preparing a polyamide composition with a simple process in view of the high requirements of the existing toughened nylon preparation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 30 parts of polycaprolactam resin, 39 parts of regenerated polycaprolactam, 10 parts of regenerated styrene-butadiene rubber, 15 parts of styrene-butadiene rubber grafted with maleic anhydride, 5 parts of calcium carbonate, 0.3 parts of Y-chloropropyltriethoxysilane, 0.2 1 part of lubricant stearamide, 0.2 part of antioxidant 1076 and 0.3 part of antioxidant 168 are added in a high-speed mixer, and the host speed is 1000 rpm, and mixed for 5 minutes. The mixture is fed into the twin-screw extruder from the feeding port of the extruder, and the extrusion temperatures are 200°C, 225°C, 240°C, 245°C, and 250°C, respectively, and extruded to granulate.

[0037] The test performance data are as follows: tensile strength 47MPA, elongation at break 119%, flexural strength 52MPA, flexural modulus 1920MPA, notched impact 81J / m 2 .

Embodiment 2

[0039] 15 parts of polyhexamethylene adipate resin, 12 parts of recycled polycaprolactam, 35 parts of polypropylene grafted maleic anhydride, 35 parts of carbon black, 1 part of titanate coupling agent NDZ-102, 1 part of lubricant hard Zinc fatty acid and 1 part of antioxidant 626 were added to the high-speed mixer, the host speed was 400 rpm, and mixed for 10 minutes. The compound is fed into the twin-screw extruder from the feeding port of the extruder, and the extrusion temperatures are 230°C, 265°C, 280°C, 285°C, and 290°C, respectively, and extruded to granulate.

[0040] The test performance data are as follows: tensile strength 38MPA, elongation at break 12%, flexural strength 59MPA, flexural modulus 1318MPA, notch impact 19J / m 2 .

Embodiment 3

[0042] Add 64 parts of recycled polyundecalactam, 10 parts of polypropylene, 10 parts of recycled polyethylene, 15 parts of calcium carbonate, 0.5 parts of coupling agent A-187, and 0.5 parts of lubricant calcium stearate into the high-speed mixer. Rotate at 1500 rpm and mix for 10 minutes. The compound is fed into the twin-screw extruder from the feed port of the extruder, and the extrusion temperatures are 170°C, 205°C, 220°C, 225°C, and 225°C, respectively, and extruded to granulate.

[0043] The test performance data are as follows: tensile strength 49.5MPA, elongation at break 43.5%, flexural strength 66.6MPA, flexural modulus 1580MPA, notched impact 20.5J / m 2 .

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Abstract

The invention belongs to the technical field of engineering plastic modification, and discloses a polyamide composition and a preparation method thereof. The polyamide composition comprises the following components by weight: 27-95 parts of polyamide, 5-35 parts of a toughening agent, 0-35 parts of an inorganic filler, 0-1 part of a coupling agent, 0-1 part of a lubricant, and 0-1 part of an antioxidant. The polyamide composition prepared by the method provided by the invention has a very low product cost and high price performance while keeping good comprehensive performance, and consumes a large amount of waste polyamide and rubber waste to solve the problem of waste reutilization; therefore, the method is as well a resource reuse engineering with both economic and environmental benefits, and promotes the development of circular economy. The product has strong competitiveness in the market, and can be widely used in the fields of machinery, electronics, automobile, electrical appliances and consumer goods.

Description

technical field [0001] The invention belongs to the technical field of modification of engineering plastics, and relates to a polyamide composition and a preparation method thereof. Background technique [0002] Polyamide is a kind of crystalline polymer with high melting point. It has excellent mechanical properties, good molding conditions and low friction. It is widely used in the fields of machinery, electronics, automobiles, electrical appliances manufacturing and consumer goods. Although polyamide resin has many excellent properties, its impact performance is not particularly outstanding, and its application in high impact resistance is greatly limited, so it needs to be toughened and modified. The toughening modification of polyamide resin includes blending and copolymerization toughening modification, among which the most common and economical modification method is blending toughening modification. The blending and toughening modification of polyamide resin mainly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L77/02C08L77/06C08L17/00C08L51/04C08L51/06C08L23/12C08L23/06C08L69/00C08L51/00B29B9/06B29C47/92B29C48/92
CPCB29C48/40
Inventor 李万里
Owner HEFEI GENIUS NEW MATERIALS
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