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Free-spraying polyamide resin with metal effect, and preparation method thereof

A polyamide resin and metal effect technology, which is used in the field of polyamide resin with metal effect without spraying and its preparation, can solve the problem of poor compatibility between metal pigments and polyamide resin, uneven dispersion of metal pigments, flow marks of injection products, etc. problems, to improve compatibility and dispersion, reduce processing costs and ecological environment pollution, reduce flow marks

Active Publication Date: 2017-05-31
SHANGHAI ZHONGLEI NEW MATERIAL SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the above-mentioned documents use a coating-free method to add metal pigments to polyamide resins to obtain polyamide resin compositions, they have relatively stringent requirements for polyamide resin materials, and there are uneven dispersion of metal pigments and metal pigments and polyamides. Poor resin compatibility and other issues. In addition, how to avoid flow marks and weld lines in injection molding products is also an urgent problem to be solved.

Method used

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  • Free-spraying polyamide resin with metal effect, and preparation method thereof
  • Free-spraying polyamide resin with metal effect, and preparation method thereof
  • Free-spraying polyamide resin with metal effect, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] A polyamide resin, which is compounded according to the following raw material ratio:

[0084]

[0085]

[0086] Among them, the metallic color pigment is copper powder, the lubricant is polyethylene wax, the coupling agent is silane coupling agent KH550, the antioxidant is 0.2 part of antioxidant 168 and 0.2 part of antioxidant 1010.

[0087] Prepare as follows:

[0088] Mix the metallic color pigment, coupling agent and zinc stearate in a high-speed mixer, and blend for 3 minutes at a speed of 220r / min to obtain the first mixture; mix polyamide, lubricant and antioxidant at high speed In the mixer, blend for 2 minutes at a speed of 320r / min to obtain the second mixture; add the first mixture and the second mixture into the twin-screw extruder, and then pass through nine hot zones for melt blending , Set the speed of the twin-screw extruder to 400r / min, the temperature of the first hot zone is 210°C, the temperature of the second hot zone is 225°C, the temperature of the thi...

Embodiment 2

[0091] A polyamide resin, which is compounded according to the following raw material ratio:

[0092]

[0093]

[0094] The metallic pigment is aluminum powder, the lubricant is ethylene bisstearic acid amide, the coupling agent is silane coupling agent Z-601, and the antioxidant is 0.2 part of antioxidant 168 and 0.1 part of antioxidant 1010.

[0095] Prepare as follows:

[0096] Mix the metallic pigment, coupling agent and zinc stearate in a high-speed mixer, and blend for 4 minutes at a speed of 250r / min to obtain the first mixture; mix polyamide, lubricant and antioxidant at high speed In the mixer, blend for 6 minutes at a speed of 350r / min to obtain a second mixture; add the first mixture and the second mixture into the twin-screw extruder, and then pass through nine hot zones for melt blending , Set the speed of the twin-screw extruder to 450r / min, the temperature of the first hot zone is 220°C, the temperature of the second hot zone is 230°C, the temperature of the third hot...

Embodiment 3

[0099] A polyamide resin, which is compounded according to the following raw material ratio:

[0100]

[0101]

[0102] The metallic pigment is pearl powder, the lubricant is stearic acid monoglyceride, the coupling agent is silane coupling agent Z-6020, and the antioxidant is 0.1 part of antioxidant 1076.

[0103] Prepare as follows:

[0104] Mix the metallic pigment, coupling agent and zinc stearate in a high-speed mixer, and blend for 5 minutes at a speed of 260r / min to obtain the first mixture; mix polyamide, lubricant and antioxidant at high speed In the mixer, blend for 10 minutes at a speed of 380r / min to obtain the second mixture; add the first mixture and the second mixture to the twin-screw extruder, and then pass through nine hot zones for melt blending , Set the speed of the twin-screw extruder to 500r / min, the temperature of the first hot zone is 225°C, the temperature of the second hot zone is 235°C, the temperature of the third hot zone is 245°C, and the temperature o...

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Abstract

The invention provides a free-spraying polyamide resin with metal effect, and a preparation method thereof. The free-spraying polyamide resin comprises, by mass, 70 to 95 parts of polyamide, 10 to 30 parts of a metal color pigment, 0.1 to 2 parts of a coupling agent, 0.1 to 0.2 part of zinc stearate, and 2 to 8 parts of a lubricating agent. The preparation method comprises following steps: the raw materials are mixed, are delivered into an extruder for melt blending and extrusion, and then cooing, drying, and cutting are carried out so as to obtain the free-spraying polyamide resin with metal effect. According to the preparation method, the metal color pigment is added into polyamide, and accessory ingredients such as the coupling agent and zinc stearate are added, so that the compatibility and dispersity of polymer matrix with the metal color pigment are improved, spraying effect of metal effect of the obtained product is achieved after injection moulding, increasing of production cost and ecological environment pollution caused by spraying are avoided, defects of injection molding products, such as flow lines and weld bond, are reduced, cost is reduced, and application prospect is promising.

Description

Technical field [0001] The invention belongs to the field of polymer materials, and specifically relates to a spray-free polyamide resin with a metallic effect and a preparation method thereof. Background technique [0002] Polyamide resin has the characteristics of non-toxic, light weight, excellent mechanical strength, wear resistance and good corrosion resistance, so it is widely used in machinery, chemical industry, instrumentation, automobile and other industries. It is also a kind of preparation automobile Commonly used materials for interior and exterior decoration. [0003] Automotive interior and exterior materials generally require a metal-like texture on the surface. The existing surface treatment methods for automotive interior and exterior materials are generally spraying or electroplating. Compared with electroplating, the spraying technology has simpler process and lower cost, so it has a wider range of applications. [0004] As people's awareness of environmental pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L23/06C08K13/02C08K3/08C08K5/098C08K5/20C08K5/103B29C47/92B29C48/92
CPCB29C48/92B29C2948/9258B29C2948/92704C08K3/08C08K5/098C08K5/103C08K5/20C08K13/02C08K2003/0812C08L77/00C08L23/06C08K2003/085C08K5/544C08K5/526C08K5/1345C08K2003/0881
Inventor 刘春艳管建王春光
Owner SHANGHAI ZHONGLEI NEW MATERIAL SCI CO LTD
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