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White master batch for high impact polystyrene (HIPS) and preparation method thereof

A polystyrene and white masterbatch technology, applied in the field of white masterbatch, can solve the problems of high production cost of color masterbatch, high price of titanium dioxide, easy sinking of color masterbatch, etc., to avoid color fluctuation and increase flow performance. , the effect of light weight

Active Publication Date: 2012-11-21
广东波斯科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The content of this kind of white masterbatch titanium dioxide is more than 40%, which will easily lead to a large proportion of color masterbatch
The color masterbatch is easy to sink during mixing with plastics and post-molding, resulting in uneven color dispersion
At the same time, the price of titanium dioxide is higher, resulting in higher production cost of masterbatch

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Under normal temperature and pressure, the following components and weight percentages: PS 40%, titanium dioxide 40%, polyethylene wax 8%, glass beads 10%, antioxidant 1010 1.995%, carbon black 0.005%, mixed at high speed Perform high-speed mixing in the machine for 10 minutes, and use a twin-screw extruder for melt blending. The temperature is controlled at 200 ° C, and the screw speed is 200 r / min. The pigment is uniformly dispersed in the carrier resin through shearing and mixing of the screw, and then The color masterbatch of the present invention is obtained by strand cutting (the appearance of the masterbatch is cylindrical), drying and packaging.

Embodiment 2

[0019] Under normal temperature and pressure, the following components and percentages by weight: PE 20%, titanium dioxide 45%, glass beads 30%, ultramarine 0.05%, EBS 4%, antioxidant 168 0.5%, antioxidant 1076 0.45% Mix in a high-speed mixer, first use a banbury mixer for internal mixing, and then use a screw extruder to carry out strand cutting (the appearance of the color masterbatch is square flakes), and the color masterbatch of the present invention is obtained.

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Abstract

The invention discloses a white master batch for high impact polystyrene (HIPS) and a preparation method thereof. The master batch consists of the following components in percentage by weight: 20 to 65 percent of titanium dioxide, 10 to 55 percent of glass microspheres, 0 to 1 percent of rongalite pigment, 1 to 20 percent of dispersing agent and 20 to 45 percent of carrier resin. A white pigment is prepared by compounding the titanium dioxide with the glass microspheres; the using amount of the titanium dioxide can be obviously reduced under the condition of not reducing tinting power and covering power; meanwhile, the master batch has small influence on the impact property of a material; in addition, the glass microspheres have low specific gravity, so color fluctuation caused by the sinkage of the master batch in the process of tinting a product can be avoided; and the glass microspheres can also increase the flowing property of the master batch and promote the dispersion of the master batch in the HIPS. The preparation method of the master batch for the HIPS is simple and practical and has wide application prospect.

Description

technical field [0001] The invention relates to the field of high-impact polystyrene (HIPS) coloring, in particular to a white masterbatch used for HIPS coloring. Background technique [0002] At present, the newly developed high-impact polystyrene is close to ABS and other engineering plastics in some properties. And with the improvement of HIPS function, more and more HIPS are used instead of ABS resin in electronic and electrical industries such as televisions, copiers, air conditioners, and refrigerators. [0003] Color masterbatches are often used for coloring in HIPS production and processing, among which white masterbatch is the most important and widely used one. The HIPS white masterbatch currently on the market is usually made of titanium dioxide, processing aids and carrier resin mixed and granulated in a certain proportion. The content of this kind of white mother titanium dioxide is more than 40%, which will easily lead to a large proportion of color masterbat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L25/06C08L53/02C08L23/08C08L23/06C08K13/04C08K3/22C08K7/20C08K7/28
Inventor 刘鹏卢俊文
Owner 广东波斯科技股份有限公司
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