CN104629324A - High-strength toughened functionalized PC/ABS alloy material - Google Patents

Abstract

The invention discloses a high-strength toughened functionalized PC/ABS alloy material. The high-strength toughened functionalized PC/ABS alloy material comprises following ingredients, by mass, 40 to 70% of PC, 20 to 40% of ABS, 5 to 15% of nano carbon fiber, 0.5 to 2% of an initiator, 3 to 8% of a flexibilizer, 2 to 10% of nano kaolin, 1 to 3% of a compatilizer, 0.5 to 2% of a plasticizer, 0.1 to 0.5% of antioxidant, and 0.1 to 1% of a lubricant. Beneficial effects of the high-strength toughened functionalized PC/ABS alloy material are that: the high-strength toughened functionalized PC/ABS alloy material is obtained via nano carbon fiber in situ polymerization and blending extrusion, so that the high-strength toughened functionalized PC/ABS alloy material possesses advantages of PC and ABS, excellent properties such as high strength, high toughness, high modulus, and excellent high-temperature resistance, excellent electrical conductivity, and excellent chemical resistance; cost is low; and economic benefit is excellent.

Description

A kind of PC/ABS alloy material of high-strength toughening functions

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of PC/ABS alloy material of high-strength toughening functions.

Background technology

PC/ABS alloy (polycarbonate/acrylonitrile-butadiene-phenylethene copolymer) is the ideal engineering plastics of a kind of performance, it has the advantage of PC and ABS concurrently, the melt viscosity of PC can be reduced on the one hand, improve thermotolerance and the tensile strength of ABS on the other hand, minimizing goods internal stress and shock strength, to the susceptibility of products thickness, have excellent thermotolerance and mechanical property.Current PC/ABS alloy is widely used in automotive industry and the field such as electric, office machinery, household electrical appliances, communication.But the consistency of PC and ABS in PC/ABS alloy is not fine, belongs to the co-mixing system of limited compatibility, therefore, shock resistance and the tensile strength of simple PC/ABS alloy material are relatively low, thus limit its range of application to a certain extent.In order to improve consistency and the mechanical property thereof of PC/ABS alloy, in PC/ABS alloy, add three components is that a kind of PC/ABS performance that can make is more excellent and obtain the important method of broader applications.

Summary of the invention

The object of the present invention is to provide a kind of PC/ABS alloy material of high-strength toughening functions.

The technical solution adopted for the present invention to solve the technical problems is: a kind of PC/ABS alloy material of high-strength toughening functions, and its component by mass percent proportioning is: PC 40% ~ 70%, ABS 20% ~ 40%, carbon nano fiber 5% ~ 15%, initiator 0.5% ~ 2%, toughner 3% ~ 8%, nano kaoline 2% ~ 10%, compatilizer 1% ~ 3%, softening agent 0.5% ~ 2%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%.

Described PC is bisphenol A polycarbonate.

Described ABS is acrylonitrile-butadiene-styrene copolymer.

Described carbon nano fiber is the gas-phase grown nanometer carbon fibre of diameter at 50nm ~ 200nm.

Described initiator is the one in isopropyl benzene hydroperoxide, dibenzoyl peroxide, di-isopropyl peroxydicarbonate, dicyclohexyl peroxydicarbonate.

Described toughner is the one in Methylacrylate-Acrylate Copolymer (ACR), MBS ternary graft copolymer (MBS), ethylene-vinyl acetate copolymer (EVA), Acrylate-styrene bipolymer-acrylonitrile copolymer (ASA).

Described compatilizer is ternary graft copolymer SEBS-g-GMA.

Described softening agent is dibutyl phthalate (DBP).

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

Described lubricant is the one in calcium stearate, ethylene bis stearamide, pentaerythritol stearate.

The preparation method of the PC/ABS alloy material of above-mentioned a kind of high-strength toughening functions, 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, stand-by;

(2), dry PC, ABS, carbon nano fiber, initiator and compatilizer is taken by weight ratio, adding barrel temperature is respectively in the high-speed mixer of 60 DEG C ~ 90 DEG C, stir 2 ~ 6 hours, add the toughner, nano kaoline, softening agent, oxidation inhibitor, the lubricant that take by weight ratio again, after making to stir together 10 ~ 40 minutes and reaching and mix, discharging;

(3), the compound of step (2) is added in twin screw extruder, extrudes through melting mixing at 255 DEG C ~ 290 DEG C, cooling granulation, get product.

The invention has the beneficial effects as follows, the PC/ABS alloy material that the present invention adopts carbon nano fiber in-situ polymerization and blending extrusion technique to obtain, there are PC, ABS separately while advantage having both, there is high strength, high tenacity, high-modulus and the excellent properties such as high temperature resistant, and conduct electricity very well, chemical resistance is strong, and cost is low, high financial profit.

Embodiment

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

A PC/ABS alloy material for high-strength toughening functions, its component by mass percent proportioning is: the hindered phenol antioxygen 1010 or 1076 of PC 53%, ABS 25%, carbon nano fiber 10%, isopropyl benzene hydroperoxide 1%, Methylacrylate-Acrylate Copolymer (ACR) 5%, nano kaoline 2%, ternary graft copolymer SEBS-g-GMA 2%, dibutyl phthalate (DBP) 1%, mass ratio 1:1 and compound 0.2%, the pentaerythritol stearate 0.8% of phosphite antioxidant 168.Wherein, described PC is bisphenol A polycarbonate; Described ABS is acrylonitrile-butadiene-styrene copolymer; Described carbon nano fiber is the gas-phase grown nanometer carbon fibre of diameter at 50nm ~ 200nm.

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, stand-by, (2), take dry PC by weight ratio, ABS, carbon nano fiber, isopropyl benzene hydroperoxide and ternary graft copolymer SEBS-g-GMA, adding barrel temperature is respectively in the high-speed mixer of 60 DEG C ~ 90 DEG C, stir 2 ~ 6 hours, add the Methylacrylate-Acrylate Copolymer (ACR) taken by weight ratio again, nano kaoline, dibutyl phthalate (DBP), the hindered phenol antioxygen 1010 or 1076 of mass ratio 1:1 and the compound of phosphite antioxidant 168, pentaerythritol stearate, after making to stir together 10 ~ 40 minutes and reaching and mix, discharging, (3), the compound of step (2) is added in twin screw extruder, extrudes through melting mixing at 255 DEG C ~ 290 DEG C, cooling granulation, get product.

Claims (5)

1. the PC/ABS alloy material of a high-strength toughening functions, it is characterized in that, its component by mass percent proportioning is: PC 40% ~ 70%, ABS 20% ~ 40%, carbon nano fiber 5% ~ 15%, initiator 0.5% ~ 2%, toughner 3% ~ 8%, nano kaoline 2% ~ 10%, compatilizer 1% ~ 3%, softening agent 0.5% ~ 2%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%.

2. the PC/ABS alloy material of a kind of high-strength toughening functions according to claim 1, is characterized in that, described carbon nano fiber is the gas-phase grown nanometer carbon fibre of diameter at 50nm ~ 200nm.

3. the PC/ABS alloy material of a kind of high-strength toughening functions according to claim 1, it is characterized in that, described toughner is the one in Methylacrylate-Acrylate Copolymer (ACR), MBS ternary graft copolymer (MBS), ethylene-vinyl acetate copolymer (EVA), Acrylate-styrene bipolymer-acrylonitrile copolymer (ASA).

4. the PC/ABS alloy material of a kind of high-strength toughening functions according to claim 1, is characterized in that, described compatilizer is ternary graft copolymer SEBS-g-GMA.

5. the preparation method of the PC/ABS alloy material of a kind of high-strength toughening functions according to claim 1, is characterized in that, comprise 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, stand-by;

(2), dry PC, ABS, carbon nano fiber, initiator and compatilizer is taken by weight ratio, adding barrel temperature is respectively in the high-speed mixer of 60 DEG C ~ 90 DEG C, stir 2 ~ 6 hours, add the toughner, nano kaoline, softening agent, oxidation inhibitor, the lubricant that take by weight ratio again, after making to stir together 10 ~ 40 minutes and reaching and mix, discharging;

(3), the compound of step (2) is added in twin screw extruder, extrudes through melting mixing at 255 DEG C ~ 290 DEG C, cooling granulation, get product.