CN104513466A

CN104513466A - PC/ABS alloy modified by filling nano particles and preparation method thereof

Info

Publication number: CN104513466A
Application number: CN201310444151.1A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-09-26
Filing date: 2013-09-26
Publication date: 2015-04-15

Abstract

The invention discloses a PC/ABS alloy modified by filling nano particles and a preparation method thereof, and belongs to the technical field of polymer materials. The PC/ABS alloy is composed of the following components in percentage by weight: 50 to 80% of PC, 10 to 40% of ABS, 3 to 8% of flexibilizer, 5 to 12% of nano particle, 0.1 to 0.5% of coupling agent, 0.1 to 0.5% of antioxidant, and 0.1 to 1.5% of silicone powder. The provided PC/ABS alloy has the advantages that the advantages of PC and ABS are integrated into the alloy, the performance defects of single component are overcome, moreover the strength, rigidity, and heatproof performance of the alloy system are largely improved, at the same time, the processing performance of the alloy is good, the electric property is excellent, and the cost is low.

Description

A kind of nano-particles filled modification PC/ABS Alloy And Preparation Method

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of nano-particles filled modification PC/ABS Alloy And Preparation Method.

Background technology

PC/ABS alloy (polycarbonate/acrylonitrile-butadiene-phenylethene copolymer) is a kind of important engineering plastics, has good formability and low-temperature impact-resistant performance, higher heat-drawn wire and light stability.Compared with PC, PC/ABS alloy reduces melt viscosity, improves processing characteristics, and substantially increases product stress crack resistance performance; Compared with ABS, PC/ABS alloy improves thermotolerance and weathering resistance, and cost, lower than PC, has the performance of both PC and ABS concurrently, and therefore have broad application prospects and huge marketable value, its main application fields comprises the industries such as automobile, electronics, electrical equipment.But PC/ABS alloy belongs to the polymeric system of partially compatible, the quality of its consistency will directly affects the property indices of this alloy system.In order to improve the consistency of PC/ABS alloy, usually adopt the mode adding three components can improve its performance further and improve mechanical property.

Summary of the invention

The object of the present invention is to provide a kind of nano-particles filled modification PC/ABS Alloy And Preparation Method.

The technical solution adopted for the present invention to solve the technical problems is: a kind of nano-particles filled modification PC/ABS alloy, its component by mass percent proportioning is: PC 50% ~ 80%, ABS 10% ~ 40%, toughner 3% ~ 8%, nanoparticle 5% ~ 12%, coupling agent 0.1% ~ 0.5%, oxidation inhibitor 0.1% ~ 0.5%, silicone powder 0.1% ~ 1.5%.

Described PC be molecular weight 17000 ~ 30000 bisphenol A polycarbonate.

Described ABS be molecular weight 80000 ~ 150000 acrylonitrile-butadiene-styrene copolymer.

Described toughner is maleic anhydride graft SIS/SEBS (SEBS-g-MAH).

The one that described nanoparticle is particle diameter in the water-ground limestone of 1 ~ 100nm, aerosil, titanium dioxide, organo montmorillonite.

Described coupling agent is the one in silane coupling agent, titanate coupling agent, aluminium titanium composite coupler.

Described oxidation inhibitor is the compound of hindered phenol antioxygen 1010 or 1076 and phosphite antioxidant 168 1:1 in mass ratio.

The preparation method of above-mentioned a kind of nano-particles filled modification PC/ABS alloy, comprises the following steps:

(1), by PC in blast drier at 110 DEG C ~ 130 DEG C temperature dry 3 ~ 4 hours, ABS at 80 DEG C ~ 90 DEG C dry 2 ~ 4 hours, nanoparticle at 60 DEG C ~ 85 DEG C dry 30 ~ 45 minutes, stand-by;

(2), dry nanoparticle and coupling agent is taken by weight ratio, add sonic oscillation producer or rotating speed is not less than in the high-speed mixer of 3000 revs/min, stir 10 ~ 60 minutes at 80 DEG C ~ 120 DEG C temperature, obtain the nanoparticle of surface modification, then be cooled to lower than 40 DEG C of dischargings, stand-by;

(3), add in high-speed mixer by taking dry PC and ABS by weight ratio, stir after 2 ~ 5 minutes, add the product that step (2) obtains, add the toughner, oxidation inhibitor and the silicone powder that take by weight ratio simultaneously, after making to stir together 5 ~ 15 minutes and reaching and mix, discharging;

(4), the compound of step (3) is added in twin screw extruder, at 230 DEG C ~ 260 DEG C through plastify blended after extrude, cooling granulation, get product.

The invention has the beneficial effects as follows, a kind of nano-particles filled modification PC/ABS alloy of the present invention, with the respective advantage of PC, ABS and make up one-component performance deficiency while, also substantially increase the intensity of this alloy system, rigidity and resistance toheat, and good processability, electrical property is excellent, and cost is low.

Embodiment

Technical scheme of the present invention is further illustrated below in conjunction with concrete preferred embodiment.

A kind of nano-particles filled modification PC/ABS alloy, its component by mass percent proportioning is: PC 50%, ABS 28%, maleic anhydride graft SIS/SEBS (SEBS-g-MAH) 8%, particle diameter are in compound 0.3%, the silicone powder 1.2% of the water-ground limestone 12% of 1 ~ 100nm, titanate coupling agent 0.5%, hindered phenol antioxygen 1010 and phosphite antioxidant 168 1:1 in mass ratio.Wherein, described PC be molecular weight 17000 ~ 30000 bisphenol A polycarbonate; Described ABS be molecular weight 80000 ~ 150000 acrylonitrile-butadiene-styrene copolymer.

Preparation method: (1), by PC in blast drier at 110 DEG C ~ 130 DEG C temperature dry 3 ~ 4 hours, ABS at 80 DEG C ~ 90 DEG C dry 2 ~ 4 hours, particle diameter was the water-ground limestone of 1 ~ 100nm at 60 DEG C ~ 85 DEG C dry 30 ~ 45 minutes, stand-by; (2) dry particle diameter, is taken by weight ratio at the water-ground limestone of 1 ~ 100nm and titanate coupling agent, add sonic oscillation producer or rotating speed is not less than in the high-speed mixer of 3000 revs/min, stir 10 ~ 60 minutes at 80 DEG C ~ 120 DEG C temperature, obtain the water-ground limestone of surface modification, then be cooled to lower than 40 DEG C of dischargings, stand-by; (3), add in high-speed mixer by taking dry PC and ABS by weight ratio, stir after 2 ~ 5 minutes, add the product that step (2) obtains, add the maleic anhydride graft SIS/SEBS (SEBS-g-MAH), hindered phenol antioxygen 1010 and phosphite antioxidant 168 compound of 1:1 and the silicone powder in mass ratio that take by weight ratio simultaneously, after making to stir together 5 ~ 15 minutes and reaching and mix, discharging; (4), the compound of step (3) is added in twin screw extruder, at 230 DEG C ~ 260 DEG C through plastify blended after extrude, cooling granulation, get product.

Claims

1. a nano-particles filled modification PC/ABS alloy, it is characterized in that, its component by mass percent proportioning is: PC 50% ~ 80%, ABS 10% ~ 40%, toughner 3% ~ 8%, nanoparticle 5% ~ 12%, coupling agent 0.1% ~ 0.5%, oxidation inhibitor 0.1% ~ 0.5%, silicone powder 0.1% ~ 1.5%.

2. a kind of nano-particles filled modification PC/ABS alloy according to claim 1, it is characterized in that, described toughner is maleic anhydride graft SIS/SEBS (SEBS-g-MAH).

3. a kind of nano-particles filled modification PC/ABS alloy according to claim 1, is characterized in that, the one that described nanoparticle is particle diameter in the water-ground limestone of 1 ~ 100nm, aerosil, titanium dioxide, organo montmorillonite.

4. the preparation method of a kind of nano-particles filled modification PC/ABS alloy according to claim 1, is characterized in that, comprise the following steps: