Preparation method for resin with spraying-free metal effect

A metal effect, spray-free technology, applied in the field of resin preparation, can solve the problems of insufficient cohesive strength of the coating layer, weak polarity of functional groups, peeling off of the protective layer, etc., and achieves excellent compatibility and good processing. good dispersion effect

Active Publication Date: 2013-10-09
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are several problems in the existing coating technology. One is that the bonding strength of the coating layer is not strong enough, which is related to the chemical bonding force, and it is easy to cause the protective layer to fall off from the surface of the aluminum powder pigment; the other is the type of coating layer. Limited, currently limited to PE, acrylate, mineral oil, etc. The functional groups of these coatings are weak in polarity, and they can only achieve the metal effect of the base resin with better compatibility with these groups

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In the first step, 10 parts of aluminum powder pigment, 20 parts of SAN-GMA copolymer (GMA content 2%), 0.2 part of ethyltriphenylphosphine bromide and 70 parts of PA757 particles are placed in the mixer in parts by weight. Control the stirring speed to 200rpm, and low-speed stirring treatment for 10min.

[0024] In the second step, put the uniformly stirred premixed material in an internal mixer at a temperature of 210° C., and process it at a low speed for 10 minutes to obtain block aluminum powder pigment.

[0025] The third step is to crush the above-mentioned block material, extrude and granulate through twin-screw, and the extrusion temperature is 210°C to obtain the coated aluminum powder and pigment masterbatch.

Embodiment 2

[0027] In order to better verify the effect of GMA content in SAN-GMA, this example is specifically compared.

[0028] In the first step, 10 parts of aluminum powder pigment, 20 parts of SAN-GMA copolymer (GMA content 5%), 0.2 part of ethyltriphenylphosphine bromide and 70 parts of PA757 particles are placed in the mixer in parts by weight. Control the stirring speed to 200rpm, and low-speed stirring treatment for 10min.

[0029] In the second step, put the uniformly stirred premixed material in an internal mixer at a temperature of 210° C., and process it at a low speed for 10 minutes to obtain block aluminum powder pigment.

[0030] The third step is to crush the above-mentioned block material, extrude and granulate through twin-screw, and the extrusion temperature is 210°C to obtain the coated aluminum powder and pigment masterbatch.

Embodiment 3

[0032] In order to better verify the influence of GMA content in SAN-GMA, this example is further compared and implemented.

[0033] In the first step, 10 parts of aluminum powder pigment, 20 parts of SAN-GMA copolymer (8% GMA content), 0.2 part of ethyltriphenylphosphine bromide and 70 parts of PA757 particles are placed in the mixer in parts by weight. Control the stirring speed to 200rpm, and low-speed stirring treatment for 10min.

[0034] In the second step, put the uniformly stirred premixed material in an internal mixer at a temperature of 210° C., and process it at a low speed for 10 minutes to obtain block aluminum powder pigment.

[0035] The third step is to crush the above-mentioned block material, extrude and granulate through twin-screw, and the extrusion temperature is 210°C to obtain the coated aluminum powder and pigment masterbatch.

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Abstract

The invention relates to a preparation method for a resin with a spraying-free metal effect. The method comprises the following steps of: chemically coating and modifying an aluminum pigment by adopting a SAN-GMA (Styrene-Glycidyl Methacrylate) copolymer; and adding into each plastic substrate resin according to a certain proportion for blending at a high speed and extruding and granulating with two screws to obtain the resin with the spraying-free metal effect. Compared with the prior art, the method has the advantages that: the coated aluminum pigment has high dispersity on the basis of keeping high metal luster and has extremely high compatibility with the plastic substrate resin, the problem that flow marks are formed easily due to the introduction of the conventional aluminum pigment into the plastic substrate is solved effectively, powerful technical support is provided for the development and application of the resin with the spraying-free metal effect, and the like.

Description

technical field [0001] The invention relates to a method for preparing a resin, in particular to a method for preparing a resin without flow marks and having a spray-free metal effect. Background technique [0002] At present, as environmental issues are getting more and more attention from people, spray-free metal effect resin products are gradually showing their competitiveness. The usual practice is to add metallic pigments, pearlescent pigments and other pigments with special colors to the high-gloss resin material. Common resins that can be used to prepare spray-free metal effects include PP, ABS, PMMA, ABS / PMMA, PC, PC / ABS, ASA, polyester, PS, etc. Spray-free metal effect resins can help customers respond to diversified and differentiated market demands, and at the same time help customers reduce production processes, improve production efficiency, and reduce production costs. Since the effect of sprayed pearlescent and flashing pearlescent can be achieved without sp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L55/02C08L69/00C08L33/12C08L67/02C08L51/00C08K13/06C08K9/10C08K3/08C08J3/22
Inventor 董建廷宋治乾周霆陈伶王斌辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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