Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Recovered composition of second-class material of PC/ABS, and application

A composition and waste material technology, which is applied in the field of PC/ABS waste material recovery composition, can solve the problems of molding equipment and mold corrosion, reducing the service life of equipment, and low requirements for mechanical properties and precision.

Inactive Publication Date: 2007-07-25
MITAC PRECISION TECH CO LTD SHUNDE DISTRICT FOSHAN CITY
View PDF0 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] For components such as PC / ABS secondary materials, modifiers and flame retardants, all raw materials are dry-blended according to the following composition formula in mass percentage:

[0021] (a) PC / ABS secondary material 80%

[0022] (b) Polycarbonate 17%

[0023] (c) Brominated polycarbonate 3%

[0024] 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.

[0025] Table 1

[0026] Test items

Embodiment 2

[0028] For components such as PC / ABS secondary materials, modifiers and flame retardants, all raw materials are dry-blended according to the following composition formula in mass percentage:

[0029] (a) PC / ABS secondary material 82.4%

[0030] (b) Polycarbonate 14.6%

[0031] (c) Brominated polycarbonate 3%

[0032] 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.

[0033] Table 2

[0034]

Embodiment 3

[0036] For components such as PC / ABS secondary materials, modifiers and flame retardants, all raw materials are dry-blended according to the following composition formula in mass percentage:

[0037] (a) PC / ABS secondary material 85%

[0038] (b) Polycarbonate 13%

[0039] (c) Brominated polycarbonate 2%

[0040] 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.

[0041] table 3

[0042] Test items

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

This invention relates to a composition of recovered PC / ABS waste material. The composition is composed of: PC / ABS waste material 80-85 wt.%, impact modifier 13-17 wt.%, and flame retardant 2-5 wt.%. Modification by impact modifier and flame retardant can improve the mechanical performance and flame retardancy of recovered PC / ABS waste material. Therefore, recovered PC / ABS waste material can be effectively utilized, and is environmentally friendly. This invention also relates to the application of the composition of recovered PC / ABS waste material in molded products.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L55/02C08K5/06
Inventor 汪克风岳瑟
Owner MITAC PRECISION TECH CO LTD SHUNDE DISTRICT FOSHAN CITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com