Method for modifying ABS plastic

An ABS plastic and modification technology, applied in the field of ABS plastic modification, can solve the problems of blurred pattern boundary on the product surface, weak coating adhesion, affecting the electroplating effect, etc., to achieve increased adhesion, increased specific surface area, improved Using the effect of the effect

Active Publication Date: 2008-04-30
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under such acid etching roughening conditions, it is easy for PC to be roughened. After electroplating, the boundary between the ABS part and the PC part is not clear, and the boundary of the product surface pattern is blurred, which affects the visual effect; if the roughening time is shortened, the ABS part The surface of the surface may not be corroded enough, and the adhesion of the coating after electroplating is not strong, which will affect the electroplating effect

Method used

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  • Method for modifying ABS plastic
  • Method for modifying ABS plastic
  • Method for modifying ABS plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The application method of modifying ABS plastic is as follows:

[0028] (1) Prepare a mixed solution of titanate coupling agent and absolute ethanol according to the weight ratio of 1:10;

[0029] (2) The nano-titanium dioxide particles with a particle diameter of 10 to 25nm and the mixed solution prepared in step (1) are simultaneously added into the high-speed mixer, wherein the weight ratio of titanate coupling agent and titanium dioxide is 2: 100, and the high-speed Mix and stir for 10 minutes to fully mix the nano-titanium dioxide and titanate coupling agent to obtain a mixed powder;

[0030] (3) Add the ABS pellets and the mixed powder prepared in step (2) into a high-speed mixer at a weight ratio of 100:4, and mix and stir at a high speed for 10 minutes to make the ABS pellets and the mixed powder prepared in step (2) Mix well to obtain the modified ABS pellets whose surface is covered with nano-titanium dioxide particles.

[0031] (4) Put the modified ABS pell...

Embodiment 2

[0033] The application method of modifying ABS plastic is as follows:

[0034] (1) Prepare the mixed solution of silane coupling agent KH-550 and acetone according to the weight ratio of 1:15;

[0035] (2) the mixed solution that the particle size is that the nano-magnesium hydroxide particle of 50~100nm and step (1) make is added in the high-speed mixer simultaneously, and wherein the weight ratio of silane coupling agent and nano-magnesium hydroxide is 1: 10. Mix and stir at high speed for 10 minutes to fully mix the nano-magnesium hydroxide and silane coupling agent to obtain a mixed powder;

[0036] (3) the mixed powder that dispersant TAS-2A and step (2) make are mixed at a high speed in the high-speed mixer, wherein in the mixed powder that dispersant TAS-2A and step (2) make The weight ratio is 1: 1, and new mixed powder is obtained after mixing;

[0037] (4) Add the ABS pellets and the new mixed powder prepared in step (3) into a high-speed mixer in a weight ratio of...

Embodiment 3

[0040] The application method of modifying ABS plastic is as follows:

[0041] (1) Prepare the mixed solution of silane coupling agent KH-570 and acetone according to the weight ratio of 1:20;

[0042] (2) Add the superfine alumina and the mixed solution prepared in step (1) into a high-speed mixer (Zhangjiagang Yili Machinery Co., Ltd., model SHR-10A, the rotating speed is 1500rpm, the same below), in which the silane The weight ratio of the coupling agent KH-570 and the superfine alumina is 1:10, and high-speed mixing and stirring for 10 minutes, so that the superfine alumina and the silane coupling agent KH-570 are fully mixed to obtain a mixed powder;

[0043] (3) The mixed powder prepared by dispersant TAS-3A and step (2) is mixed at a high speed in a high-speed mixer, wherein the weight of superfine alumina in the mixed powder prepared by dispersant TAS-3A and step (2) The ratio is 1: 2, after mixing, a new mixed powder is obtained;

[0044] (4) Add the ABS pellets and...

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Abstract

The invention provides a modified method of ABS plastic. ABS aggregate and modified powder body which is easy to be eroded are mixed to obtain modified ABS. After the modified ABS plastic obtained by adopting the method is coarsened, the surface area is increased greatly, the hydrophilicity of the surface is strengthened, and the adhesive force of a coating after being plated is increased. The modified ABS plastic only requires shorter acid corrosion and coursing time (the acid corrosion and the coursing in this time cannot erode PC), and the ideal coarsening effect can be achieved. Coupling agent is used, the compatibility between the modified powder body and the ABS can be enhanced, and the fine compound bounding surface can be obtained; solvent can improve the operation effect of the coupling agent; dispersant agent can lead the materials to be mixed to be evener, thus the modified quality is improved.

Description

【Technical field】 [0001] The invention relates to a modification method of ABS plastics, in particular to a modification method of ABS plastics which are easy to be coarsened. 【Background technique】 [0002] Components such as mobile phone buttons are mostly made of ABS and PC, using two-color injection molding. After electroplating, the surface of the ABS part of the product is an electroplating layer, and the surface of the PC part is not electroplated but transparent. The pattern part of the product (that is, the ABS part) surface has The metal texture of the electroplated part, while the rest (ie the PC part) can transmit light. This process requires that the boundary between the electroplating part and the non-plating part (ie, the ABS part and the PC part) is very clear and neat to ensure a good visual effect. [0003] In this process, in order to achieve a good electroplating effect, the surface of the product needs to be roughened by acid etching before electroplati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L55/02C08K13/06
Inventor 肖海源陈梁宫清
Owner BYD CO LTD
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