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PC/ABS disposable recovering composition and its use

A composition and secondary material technology, applied in the field of PC/ABS secondary material recovery composition, can solve the problems of reducing the service life of equipment, corrosion of molding equipment and molds, and failure to fully utilize economic value.

Inactive Publication Date: 2010-04-28
MITAC PRECISION TECH CO LTD SHUNDE DISTRICT FOSHAN CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) Simple recovery and granulation of PC / ABS secondary materials without any modification, downgraded to ordinary plastics, although the problem of environmental pollution has been solved, the economic value of these secondary materials has not been fully utilized
At present, the industry often uses coupling agents to improve the mechanical properties of the resin when recycling PC / ABS, but the finished resin modified by this method is only suitable for situations where the mechanical properties and precision of the material are not high; Acid anhydride is used as a coupling agent. During the processing, the acid anhydride will corrode the molding equipment and molds and reduce the service life of the equipment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] For components such as PC / ABS secondary materials, modifiers and flame retardants, all raw materials are dry-blended according to the following composition formula:

[0032] (a) PC / ABS secondary material 70%

[0033] (b) Polycarbonate 24.8%

[0034] (c) Brominated polycarbonate (bromine content 58%) 5%

[0035] (d) Polytetrafluoroethylene 0.2%.

[0036] Then the dry mixture is kneaded and granulated in an extruder, and the resulting kneaded and granulated product is made into a finished product by injection molding. Finally, the mechanical properties of the finished product are tested according to the national standard GB13525 / T-92 and the UL94 standard of the American Electrotechnical Association. The flame retardant performance was tested and compared with the performance of PC / ABS raw material and PC / ABS secondary material itself. The results are shown in Table 1.

[0037] Table 1

[0038] Test items

Embodiment 2

[0040] For components such as PC / ABS secondary materials, modifiers and flame retardants, all raw materials are dry-blended according to the following composition formula:

[0041] (a) PC / ABS secondary material 77.6%

[0042] (b) Polycarbonate 19.2%

[0043] (c) Brominated polycarbonate (58% bromine content) 3%

[0044] (d) Polytetrafluoroethylene 0.2%.

[0045] Then the dry mixture is kneaded and granulated in an extruder, and the resulting kneaded and granulated product is made into a finished product by injection molding. Finally, the mechanical properties of the finished product are tested according to the national standard GB13525 / T-92 and the UL94 standard of the American Electrotechnical Association. The flame retardant performance was tested and compared with the performance of PC / ABS raw material and PC / ABS secondary material itself. The results are shown in Table 2.

[0046] Table 2

[0047] Test items

Embodiment 3

[0049] For components such as PC / ABS secondary materials, modifiers and flame retardants, all raw materials are dry-blended according to the following composition formula:

[0050] (a) PC / ABS secondary material 85%

[0051] (b) Polycarbonate 12.8%

[0052] (c) Brominated polycarbonate (58% bromine content) 2%

[0053] (d) Polytetrafluoroethylene 0.2%.

[0054] Then the dry mixture is kneaded and granulated in an extruder, and the resulting kneaded and granulated product is made into a finished product by injection molding. Finally, the mechanical properties of the finished product are tested according to the national standard GB13525 / T-92 and the UL94 standard of the American Electrotechnical Association. The flame retardant performance was tested and compared with the performance of PC / ABS raw material and PC / ABS secondary material itself. The results are shown in Table 3.

[0055] table 3

[0056] Test items

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PUM

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Abstract

A PC / ABS substandard material recovering composition and its use are disclosed. The composition is prepared by blending 70-85wt% PC / ABS substandard material with 12.8-24.8wt% impact-resisting modifier, 2-5wt% fire retardant and 0.2wt% auxiliary fire retardant and modifying PC / ABS substandard material. It has better mechanical and fire-retarding performances and no environmental pollution.

Description

technical field [0001] The invention relates to a PC / ABS (Polycarbonate / ABS Alloy, polycarbonate / acrylonitrile-butadiene-styrene) waste recovery composition, and also relates to the application of the waste recovery composition in resin manufacturing. Background technique [0002] PC / ABS resin produces a lot of cold material, residual material or defective products, recycled products and other secondary materials during injection molding. At present, the treatment methods for PC / ABS secondary materials mainly include: (1) Incineration or landfill treatment . Since harmful gases such as sulfur dioxide (the main substance that forms acid rain) will be produced during the incineration process, it is very easy to cause environmental pollution; and the refractory nature of PC / ABS in the landfill method will also cause great harm to the environment. . At present, this method has been phased out in the industry. (2) Simply recycle and pump PC / ABS secondary materials without any ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L55/02C08K5/06
Inventor 汪克风岳瑟
Owner MITAC PRECISION TECH CO LTD SHUNDE DISTRICT FOSHAN CITY
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