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Low-odor high-weld-line-strength flame-retardant PC/ABS (polycarbonate/acrylonitrile butadiene styrene) composite

A low-odor and composition technology, which is applied in the field of low-odor and high-weld line strength flame-retardant PC/ABS compositions, can solve the problems of continuous production of products that affect the appearance of products, easy precipitation of small molecular substances, and residual mold scale, etc. Improve interfacial compatibility, small particle size, and avoid degradation effects

Inactive Publication Date: 2016-07-20
TIANJIN KINGFA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since acrylonitrile-butadiene-styrene graft copolymer (ABS), polymethyl methacrylate (PMMA) and impact modifier will introduce dispersant or other auxiliary agents when they are synthesized, After the flame-retardant PC / ABS composition, due to the characteristics of the molecular structure of polycarbonate (PC), these small molecular substances will cause the degradation of polycarbonate (PC), and at the same time small molecular substances are also prone to precipitation during use, resulting in water splash Defects such as residual mold and scale will seriously affect the appearance of the product and the continuous production of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of flame-retardant PC / ABS composition with low odor and high weld line strength according to the present invention, firstly prepare one-step material YBL-ABS, first mix 55% ABS and 30% impact modifier MBS by weight percentage 15% PMMA is uniformly mixed in a high mixer for 1-3min to obtain a premix; according to the method of the present invention, the premix is ​​put into a twin-screw extruder to obtain one-step YBL-ABS plastic granules. The one-step material YBL-ABS accounts for 18% by weight percentage, PC accounts for 69.3%, BDP accounts for 12%, and other auxiliary agents account for 0.7%, and described other auxiliary agents include antioxidants and anti-dripping agents. The flame-retardant PC / ABS composition with low odor and high weld line strength is prepared according to the method of the present invention.

Embodiment 2

[0024] A kind of flame-retardant PC / ABS composition with low odor and high weld line strength according to the present invention, firstly prepare one-step material YBL-ABS, first mix 55% ABS and 30% impact modifier MBS by weight percentage 15% PMMA is uniformly mixed in a high mixer for 1-3min to obtain a premix; according to the method of the present invention, the premix is ​​put into a twin-screw extruder to obtain one-step YBL-ABS plastic granules. The one-step material YBL-ABS accounts for 12% by weight percentage, PC accounts for 79.3%, BDP accounts for 8%, and other auxiliary agents account for 0.7%, and described other auxiliary agents include antioxidants and anti-dripping agents. The flame-retardant PC / ABS composition with low odor and high weld line strength is prepared according to the method of the present invention.

Embodiment 3

[0026] A kind of flame-retardant PC / ABS composition with low odor and high weld line strength according to the present invention, firstly prepare one-step material YBL-ABS, first mix 55% ABS and 30% impact modifier MBS by weight percentage 15% PMMA is uniformly mixed in a high mixer for 1-3min to obtain a premix; according to the method of the present invention, the premix is ​​put into a twin-screw extruder to obtain one-step YBL-ABS plastic granules. The one-step material YBL-ABS accounts for 25% by weight percentage, PC accounts for 59.3%, BDP accounts for 15%, and other auxiliary agents account for 0.7%. Said other auxiliary agents include antioxidants and anti-dripping agents. The method of the invention prepares the flame-retardant PC / ABS composition with low odor and high weld line strength.

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Abstract

The invention relates to a low-odor high-weld-line-strength flame-retardant PC / ABS (polycarbonate / acrylonitrile butadiene styrene) composite which comprises PC, a phosphorus-containing flame retardant, ABS, PMMA (polymethyl methacrylate) and an impact resistant modifier. The low-odor high-weld-line-strength flame-retardant PC / ABS composite is prepared by means of preparing the ABS, PMMA and impact resistant modifier into a one-step material YBL-ABS through physical extrusion prior to mixing the one-step material YBL-ABS with waste materials. The composite has the advantages that the one-step material used is simple and easy to obtain, the preparation process is simple, cost is low, small molecules in material molecules can be removed effectively, meanwhile, weld line strength of the material is improved, and mechanical properties of the material can be improved significantly; the material can be applied to industries such as automobiles, refrigerators and televisions.

Description

technical field [0001] The invention belongs to the technical field of polymer modification, and in particular relates to a flame-retardant PC / ABS composition with low odor and high weld line strength. Background technique [0002] Polycarbonate (PC) is a thermoplastic engineering plastic with excellent physical and mechanical properties. It has excellent transparency and flame retardancy and has a wide range of applications; High, prone to stress cracking, poor solvent resistance, easy to decompose when exposed to water at high temperatures, etc., which limit its use to a certain extent. Generally, through the modification technology, the processability and internal stress of the acrylonitrile-butadiene-styrene graft copolymer (ABS) are improved, and the impact modifier is added to improve the polycarbonate (PC) composition. toughness. However, since acrylonitrile-butadiene-styrene graft copolymer (ABS), polymethyl methacrylate (PMMA) and impact modifier will introduce di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L55/02C08L51/04C08L33/12C08K5/523B29C47/92B29C48/92
CPCB29C48/92B29C2948/9258B29C2948/92704C08L69/00C08L2201/02C08L2205/035C08L2205/08C08L55/02C08L51/04C08L33/12C08K5/523
Inventor 陈勇文佟伟艾军伟李明昆何继辉岑茵张现军陶四平
Owner TIANJIN KINGFA NEW MATERIAL
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