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Flame-retardant glass fiber reinforced PC (Polycarbonate)/ABS (Acrylonitrile Butadiene Styrene) composite material and preparation method thereof

A composite material and glass fiber technology, applied in the field of PC/ABS composite material and its preparation, can solve the problems of difficult demoulding, aggregation, affecting the uniform distribution of fibers, etc., achieving good comprehensive performance, large application space, and improved blending performance. Effect

Active Publication Date: 2014-09-17
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the small shrinkage of plastic parts caused by high PC content and high fiber content, it is difficult to demould plastic parts in the original mold, and a large number of small molecular additives such as flame retardants are easy to gather on the surface of plastic parts, Easy to stick to the mold and affect the uniform distribution of fibers, how to ensure the good comprehensive performance of the final plastic product to meet market requirements is a problem that needs to be solved

Method used

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  • Flame-retardant glass fiber reinforced PC (Polycarbonate)/ABS (Acrylonitrile Butadiene Styrene) composite material and preparation method thereof
  • Flame-retardant glass fiber reinforced PC (Polycarbonate)/ABS (Acrylonitrile Butadiene Styrene) composite material and preparation method thereof
  • Flame-retardant glass fiber reinforced PC (Polycarbonate)/ABS (Acrylonitrile Butadiene Styrene) composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A flame-retardant glass fiber reinforced PC / ABS composite material, the composition of which is shown in Table 1 by weight.

[0043] The selected PC is German Bayer PC2405, which is a low-viscosity bisphenol A polycarbonate with a melt flow rate of 20g / min (300°C / 1.2Kg);

[0044] The selected ABS is acrylonitrile-styrene-butadiene graft copolymer (imported GP22), with a melt flow rate of 18g / 10min (10Kg, 220°C);

[0045] The selected chopped fibers are E-type alkali-free chopped fibers with a diameter of φ13 μm and a length of 3 mm, which are treated with a silane coupling agent;

[0046] The selected flame retardant is sulfonate flame retardant FR2025;

[0047] The selected black masterbatch is British Colloids SAN11821, which has a positive impact on the mechanical properties of the system;

[0048] The selected processing aid is a compound of internal and external lubricants, release agents, anti-glass fiber exposure agents, dispersants, and compatible toughening a...

Embodiment 2

[0054] The formula is shown in Table 1. The difference between Example 2 and Example 1 is that different base color masterbatches and addition ratios are selected. Example 2 uses British Colloid PC base color masterbatch 4357; the ABS used is different from Example 1, which is Shanghai Gaoqiao 8391. The melt flow rate is 32g / 10min (10Kg, 220°C); the two experimental schemes use sulfonate flame retardants alone.

Embodiment 3

[0056] The formula is shown in Table 1. The difference between Example 3 and Example 2 is that different types of flame retardants are used. In Example 3, TPP phosphorus-based flame retardants are mainly selected.

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Abstract

The invention relates to a flame-retardant glass fiber reinforced PC (Polycarbonate) / ABS (Acrylonitrile Butadiene Styrene) composite material and a preparation method thereof. The preparation method comprises the steps of: respectively and fully drying low-viscosity PC, high-flow ABS resin, chopped fibers treated by using silane coupling agent, a halogen-free composite flame retardant, an anti-dripping agent, a black color base and a processing agent; fully mixing other raw materials except for the alkali-free chopped fibers treated by using the silane coupling agent in a high-speed mixer according to a proportion; then feeding the raw material into a double-screw extruder; laterally adding the alkali-free chopped fibers treated by using the silane coupling agent; and mixing, extruding, drawing, cooling, grain-sized dicing, and drying to obtain a finished injection molding raw material. The preparation method of the flame-retardant glass fiber reinforced PC / ABS composite material, disclosed by the invention, keeps certain impact intensity and rational MFR (Melt Flow Rate), thermal distortion temperature, vicat softening point and the like of the material while obtaining high intensity, high rigidity and flame retardant properties by selecting an assistant and proportions of the raw materials reasonably and adding the fibers as well as the flame retardant.

Description

technical field [0001] The invention relates to a PC / ABS composite material and a preparation method thereof, which belongs to the technical field of physical modification of polymer materials, and is suitable for rapid thermal cycle high-gloss injection molding of plastic parts with high requirements for strength and rigidity, high gloss appearance and no weld marks , such as appearance injection molded parts of home appliances, consumer electronics and other products and injection molded structural parts of other products. Background technique [0002] The sustainable development of the economy and people's requirements for the environment urgently need to solve the problem of the coordinated development of plastic materials and environmental protection. At the same time, with people's continuous pursuit of quality of life, noble, elegant, stable and elegant appearance devices have become an important choice for consumers, which makes product design put forward higher requ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L55/02C08K13/06C08K9/06C08K7/14B29B9/06B29C47/92B29C45/78B29C48/92
CPCB29C47/0011B29B7/72B29B7/46B29B9/14B29B7/7461B29B9/06B29B9/12B29C47/92B29B7/90B29C48/04B29C48/40C08K5/0066C08K7/14C08L51/04C08L55/02C08L69/00C09K21/12
Inventor 赵国群王伟华高民王成功管延锦王小新
Owner SHANDONG UNIV
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