CN103131154A

CN103131154A - Cold-resistant PC/ABS alloy

Info

Publication number: CN103131154A
Application number: CN2013100498239A
Authority: CN
Inventors: 杜县南
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-01-31
Filing date: 2013-01-31
Publication date: 2013-06-05

Abstract

The invention provides a cold-resistant PC/ABS alloy which comprises the following raw material components: 40-60 percent of PC, 10-15 percent of ABS, 8-16 percent of halogen-free flame retardant NP, 3-8 percent of a flexibilizer, 2-5 percent of an antimony-contained compound, 0.3-0.7 percent of tetrafluoroethylene, 1-2 percent of reactivity monomer M, 0.2-0.9 percent of antioxygen, 0.1-0.7 percent of an anti-ultraviolet agent and 0.1-2.4 percent of a processing agent. The cold-resistant PC/ABS alloy can obviously improve mechanical performance, meet the environmental requirements of all countries in the present world, shock strength of the alloy is improved, and good toughness of the alloy under the low temperature of -35 DEG C is achieved. Fusion grafting reaction of a system is achieved, the PC and the ABS can be well compatible, and the service life of materials is guaranteed.

Description

A kind of cold-resistant PC/ABS alloy

Technical field

The present invention relates to the alloy technology field, specifically refer to a kind of cold-resistant PC/ABS alloy.

Technical background

The PC/ABS alloy is a kind of one of important meals material on the articles for use such as mobile phone, computer casing, electrical connector that is widely used in.Current PC/ABS alloy has the following weak point, first: the consistency of PC and ABS is bad, causes the mechanical property of alloy monolithic not good enough; Second: flame retardant properties is bad, and the halogens too high levels, and environment is had certain contamination; The 3rd: the resistance to impact shock ability, especially when low-temperature condition, its toughness will sharply reduce, and easily cause material failure; The 4th; The ability of resistance of oxidation and ultraviolet radiation resisting, the work-ing life of material is not high, and the 5th: production efficiency is not high, to the serious wear of equipment.

Summary of the invention

The purpose of this invention is to provide a kind of cold-resistant PC/ABS alloy that solves the weak point of above-mentioned existing PC/ABS alloy.

The present invention is to provide a kind of cold-resistant PC/ABS alloy, this PC/ABS alloy includes the per-cent of following material composition: PC content is that 40-60%, ABS content are that 10-15%, halogen-free flame retardants NP content are that 8-16%, toughner content are that 3-8%, antimony containing compounds content are that 2-5%, tetrafluoroethylene content are that 0.3-0.7%, reactive monomer M content are that the content of 1-2%, oxidation inhibitor is that the content of 0.2-0.9%, anti UV agent is that the content of 0.1-0.7% and processing aid is 0.1-2.4%.

The silicone that also comprises 0.3-1%, and this PC/ABS alloy also includes the per-cent of following material composition: PC content is that 30-65%, ABS content are that 15-20%, halogen-free flame retardants NP content are that 4-12%, toughner content are that 2-6%, antimony containing compounds content are that 1-6%, tetrafluoroethylene content are that 0.4-0.8%, reactive monomer M content are that the content of 0.5-1.5%, oxidation inhibitor is that the content of 0.3-0.6%, anti UV agent is that the content of 0.2-0.9% and processing aid is 0.2-1.6%.

The silicone that also comprises 0.4-1.5%, and this PC/ABS alloy also includes the per-cent of following material composition: PC content is that 35-75%, ABS content are that 10-23%, halogen-free flame retardants NP content are that 2-8%, toughner content are that 1-8%, antimony containing compounds content are that 2-7%, tetrafluoroethylene content are that 0.5-0.7%, reactive monomer M content are that the content of 0.6-1.4%, oxidation inhibitor is that the content of 0.4-0.7%, anti UV agent is that the content of 0.3-0.8% and processing aid is 0.1-1.1%

As preferably, described toughner is any one of paracril, carboxy nitrile rubber, isoprene-isobutylene rubber and polyvinyl acetal.

As preferably, described oxidation inhibitor is any one of oxidation inhibitor TPP, antioxidant 1010 and antioxidant 1076.

As preferably, described toughner is SAN (styrene-acrylonitrile).

The present invention has rationally adjusted the ratio of PC and ABS, can significantly improve the mechanical property of alloy, and the halogen-free flame retardants NP that adds in alloy can make the flame retardant properties of alloy reach the requirement of U.S. UL94V-0 level, and not halogen-containing, meets the environmental requirement of world; The toughner that adds has improved the resistance to impact shock of alloy greatly, makes alloy still have toughness preferably under the low temperature of-35 degree; Reactive monomer M adds, and can make system produce melting and connect the skill reaction, makes PC and the ABS can be compatible well, makes the comprehensive mechanical performance of PC/ABS reach optimum regime; And oxidation inhibitor and anti UV agent can make the PC/ABS alloy have stronger resistance of oxidation and the ability of ultraviolet radiation resisting, thereby guarantee the work-ing life of material; And improve the fluidity of molten of this PC/ABS alloy by adding silicone lubricant, can avoid the phenomenons such as filling is discontented to occur when some thin-gage goods of PC/ABS alloy forming or blind hole position, the processing aid that adds simultaneously can improve molecule production efficiency again greatly, reduces the wearing and tearing to processing units.

Embodiment

The following stated is a preferred embodiment of the present invention, but does not limit protection scope of the present invention with this.

The per-cent of choosing the PC/ABS alloy raw material in this example is: PC content is 57%, ABS content is 15%, halogen-free flame retardants NP content is 16%, toughner content is 5%, antimony containing compounds content is 3%, tetrafluoroethylene content is 0.5%, reactive monomer M content is 1%, the content of oxidation inhibitor is 0.7%, the content of anti UV agent be 0.3% and the content of processing aid be 1.5%.

At first dried PC and ABS, halogen-free flame retardants NP, toughner, reactive monomer M, oxidation inhibitor, anti UV agent, antimony containing compounds, tetrafluoroethylene and processing aid are put into high-speed mixer and carry out high-speed kneading, time is about 5 minutes, and temperature is normal temperature; Afterwards, extrude by twin screw extruder, forcing machine can adopt parallel dual-screw extruding machine, to reach high efficiency mixed effect.In the process of Screw Extrusion, reaction in－situ occurs in PC and ABS under the coupled action of reactive monomer M, and the consistency of PC and ABS is improved from molecular level; At last, the material of twin screw extruder being extruded by dicing machine is cut into particle, namely obtains having the PC/ABS alloy of premium properties.Its result is as shown in table 1.

The properties data sheet of the cold-resistant PC/ABS alloy of table 1: embodiment

Table 1

Although above the present invention is described in detail with a general description of the specific embodiments, on basis of the present invention, can to some modifications or improvement, this will be apparent to those skilled in the art.Therefore, these modifications or improvements, all belong to the claimed scope of invention without departing from theon the basis of the spirit of the present invention.

Claims

1. cold-resistant PC/ABS alloy, it is characterized in that: this PC/ABS alloy includes the per-cent of following material composition: PC content is that 40-60%, ABS content are that 10-15%, halogen-free flame retardants NP content are that 8-16%, toughner content are that 3-8%, antimony containing compounds content are that 2-5%, tetrafluoroethylene content are that 0.3-0.7%, reactive monomer M content are that the content of 1-2%, oxidation inhibitor is that the content of 0.2-0.9%, anti UV agent is that the content of 0.1-0.7% and processing aid is 0.1-2.4%.

2. cold-resistant PC/ABS alloy according to claim 1, it is characterized in that: the silicone that also comprises 0.3-1%, and this PC/ABS alloy also includes the per-cent of following material composition: PC content is 30-65%, ABS content is 15-20%, halogen-free flame retardants NP content is 4-12%, toughner content is 2-6%, antimony containing compounds content is 1-6%, tetrafluoroethylene content is 0.4-0.8%, reactive monomer M content is 0.5-1.5%, the content of oxidation inhibitor is 0.3-0.6%, the content of anti UV agent is that the content of 0.2-0.9% and processing aid is 0.2-1.6%.

3. cold-resistant PC/ABS alloy according to claim 1, it is characterized in that: the silicone that also comprises 0.4-1.5%, and this PC/ABS alloy also includes the per-cent of following material composition: PC content is 35-75%, ABS content is 10-23%, halogen-free flame retardants NP content is 2-8%, toughner content is 1-8%, antimony containing compounds content is 2-7%, tetrafluoroethylene content is 0.5-0.7%, reactive monomer M content is 0.6-1.4%, the content of oxidation inhibitor is 0.4-0.7%, the content of anti UV agent is that the content of 0.3-0.8% and processing aid is 0.1-1.1%.

4. according to claim 1-3 any described cold-resistant PC/ABS alloys, it is characterized in that: described toughner is any one of paracril, carboxy nitrile rubber, isoprene-isobutylene rubber and polyvinyl acetal.

5. according to claim 1-3 any described cold-resistant PC/ABS alloys, it is characterized in that: described oxidation inhibitor is any one of oxidation inhibitor TPP, antioxidant 1010 and antioxidant 1076.

6. according to claim 1-3 any described cold-resistant PC/ABS alloys, it is characterized in that: described toughner is SAN (styrene-acrylonitrile).