High-glossiness low-odor high-low-temperature-toughness flame-retardant PC/ABS (polycarbonate/acrylonitrile-butadiene-styrene) composition

A low-odor, high-low temperature technology, applied in high-low temperature tough flame-retardant PC/ABS composition, high gloss, low-odor field, can solve problems such as unfriendly smell, unfavorable material performance, etc., to avoid the precipitation of small molecular substances, cost The effect of low cost and simple preparation process

Inactive Publication Date: 2016-08-17
TIANJIN KINGFA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the introduction of dispersants or other additives during the synthesis of ABS and impact modifiers, after making a flame-retardant PC / ABS composition, due to the characteristics of the PC molecular structure, these small molecules are detrimental to material properties, such as injection molding The process produces material flowers, mold scale, etc.; at the same time, materials containing small molecules will emit unfriendly odors during use, which limits their applications to a large extent

Method used

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  • High-glossiness low-odor high-low-temperature-toughness flame-retardant PC/ABS (polycarbonate/acrylonitrile-butadiene-styrene) composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A high-gloss, low-odor, high-low temperature toughness flame-retardant PC / ABS composition is made of the following raw materials in mass percentage: polycarbonate 41%, BDP 19%, ABS-low temperature toughening modifier one-step material 40 %; wherein, the ABS-low temperature toughening modifier one-step material is made of raw materials including the following mass percentages: ABS 60%, MBS 40%; the molecular weight of the polycarbonate is 25000-37000; the The particle size of ABS is 0.1um-0.4um.

[0048] This ABS-low temperature toughening modifier one-step material is prepared by the method comprising the following steps:

[0049] (1) Put the ABS and the low-temperature toughening modifier into a high-mixer for mixing to obtain a premix;

[0050] (2) Put the premix into the main feeding port of the twin-screw extruder and extrude. The screw length-to-diameter ratio of the twin-screw extruder is 48:1, and the twin-screw extruder The melt extrusion conditions are: the tem...

Embodiment 2

[0053] A high-gloss, low-odor, high-low temperature toughness flame-retardant PC / ABS composition is made of the following raw materials in mass percentage: polycarbonate 80%, BDP 8%, ABS-low temperature toughening modifier one-step material 12 %; wherein, the ABS-low temperature toughening modifier one-step material is made of raw materials comprising the following mass percentages: ABS 60%, MBS 40%; the molecular weight of the polycarbonate is 25000-37000; The particle size of ABS is 0.1um-0.4um.

[0054] This ABS-low temperature toughening modifier one-step material is prepared by the method comprising the following steps:

[0055] (1) Put the ABS and the low-temperature toughening modifier into a high-mixer for mixing to obtain a premix;

[0056] (2) Put the premix into the main feeding port of the twin-screw extruder and extrude. The screw length-to-diameter ratio of the twin-screw extruder is 48:1, and the twin-screw extruder The melt extrusion conditions are: the tempe...

Embodiment 3

[0059] A high-gloss, low-odor, high-low temperature toughness flame-retardant PC / ABS composition is made of the following raw materials in mass percentage: polycarbonate 60%, BDP 15%, ABS-low temperature toughening modifier one-step material 25 %; wherein, the ABS-low temperature toughening modifier one-step material is made of raw materials comprising the following mass percentages: ABS 60%, MBS 40%; the molecular weight of the polycarbonate is 25000-37000; The particle size of ABS is 0.1um-0.4um.

[0060] This ABS-low temperature toughening modifier one-step material is prepared by the method comprising the following steps:

[0061] (1) Put the ABS and the low-temperature toughening modifier into a high-mixer for mixing to obtain a premix;

[0062] (2) Put the premix into the main feeding port of the twin-screw extruder and extrude. The screw length-to-diameter ratio of the twin-screw extruder is 48:1, and the twin-screw extruder The melt extrusion conditions are: the temp...

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Abstract

The invention provides a high-glossiness low-odor high-low-temperature-toughness flame-retardant PC/ABS (polycarbonate/acrylonitrile-butadiene-styrene) composition which is prepared from the following raw materials in percentage by mass: 30-90% of PC, 5-25% of phosphorus-containing flame retardant and 5-50% of ABS-low-temperature toughening modifier one-step material, totaling 100%. The ABS-low-temperature toughening modifier one-step material is prepared from the following raw materials in percentage by mass: 50-80% of ABS and 20-50% of low-temperature toughening modifier. The selected ABS material and the produced ABS-low-temperature toughening modifier one-step material are proportionally mixed with the flame retardant and PC to perform modification in an extruder, thereby obviously improving the problems of the odor of the PC/ABS composition, the defects in the compacting process and the like.

Description

technical field [0001] The invention belongs to the field of polymer modification, and in particular relates to a flame-retardant PC / ABS composition with high gloss, low odor, high and low temperature toughness. 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; Stress cracking occurs, poor solvent resistance, and easy to decompose when exposed to water at high temperatures, which limit its application to a certain extent. Generally, through the modification technology, the processability and internal stress are improved by adding acrylonitrile-butadiene-styrene graft copolymer (ABS), and selecting the appropriate type of ABS can reduce the impact on the gloss of the material due to the addition of ABS. Influence; adding impact modifiers to improve the toughness of polycarbonate compositions, especi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L55/02C08L51/04C08K5/523C08J3/00B29C47/92B29C48/92
CPCC08L69/00B29C48/92B29C2948/9259B29C2948/92704C08J3/005C08J2369/00C08J2455/02C08L2201/02C08L2205/03C08L2207/53C08L55/02C08L51/04C08K5/523
Inventor 陈勇文佟伟艾军伟何继辉李明昆岑茵张现军陶四平
Owner TIANJIN KINGFA NEW MATERIAL
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