CN104693718A - High-gloss high-impact-resistant high-strength modified PC/PET composite material - Google Patents

Abstract

The invention discloses a high-gloss high-impact-resistant high-strength modified PC/PET composite material. The high-gloss high-impact-resistant high-strength modified PC/PET composite material comprises following ingredients, by mass, 30 to 60% of PC, 20 to 30% of PET, 5 to 10% of glass fiber, 5 to 10% of an acrylic acid impact modifier, 2 to 5% of precipitated barium sulphate, 1 to 3% of a fluorescent whitening agent, 0.5 to 2% of a stabilizing agent, 1 to 4% of a compatilizer, 0.1 to 0.5% of an antioxidant, and 0.1 to 1.5% of a lubricant. Beneficial effects are that: synergetic enhancement and gloss improvement effect of glass fiber and precipitated barium sulphate is achieved; appropriate amounts of the acrylic acid impact modifier, the fluorescent whitening agent, the stabilizing agent, the compatilizer, and the other auxiliary agents are added, so that the obtained PC/PET composite material possesses excellent modification effects such as high gloss, high impact resistance, and high strength, and excellent electrical performance, aging resistance, and processability, and can be widely used in the fields of automobile, electric appliance, instrument and meter, mechanical equipment, and building material.

Description

The PC/PET matrix material of a kind of high-gloss high-impact high strength modification

Technical field

The present invention relates to technical field of polymer materials, the PC/PET matrix material of specifically a kind of high-gloss high-impact high strength modification.

Background technology

PC/PET matrix material (polycarbonate/polyethylene terephthalate) is a kind of engineering plastics of excellent performance, all can use, such as, be applied to the fields such as electronic apparatus, automotive industry, machinery, optical instruments, medicine, building in a lot of occasion.But because PC is non-crystalline polymer, PET is crystalline polymer, PC/PET belongs to typical amorphous/crystalline co-mixing system, and both consistencies are bad.In PC/PET composite system, add three components, the consistency of PC and PET in system can be significantly improved, and apply along with the development of PC/PET, PC/PET matrix material is proposed to the requirement of functionalization, high performance.

Summary of the invention

The object of the present invention is to provide the PC/PET matrix material of a kind of high-gloss high-impact high strength modification.

The technical solution adopted for the present invention to solve the technical problems is: the PC/PET matrix material of a kind of high-gloss high-impact high strength modification, and its component by mass percent proportioning is: PC 30% ~ 60%, PET 20% ~ 30%, glass fibre 5% ~ 10%, acrylic impact modifier 5% ~ 10%, process white 2% ~ 5%, white dyes 1% ~ 3%, stablizer 0.5% ~ 2%, compatilizer 1% ~ 4%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1.5%.

Described PC is bisphenol A-type aromatic copolycarbonate, and weight-average molecular weight is 20000 ~ 40000g/mol.

Described PET is polyethylene terephthalate, and its intrinsic viscosity is 0.6 ~ 0.9dL/g.

Described glass fibre be diameter 8 ~ 15 μm, length is 3 ~ 6mm, specific refractory power is alkali free glass fibre between 1.58 ~ 1.60, and its surface is through silane coupling agent process.

Described acrylic impact modifier is the one in Methylacrylate-Acrylate Copolymer (ACR), MBS (MBS), methyl methacrylate butadi ene copolymer (MMB), acrylonitrile-styrene-acrylic ester copolymer (ASA).

Described process white to be particle diameter the be active process white of 0.5 ~ 3 μm, its relative density is 4.3 ~ 4.6g/cm ³, specific refractory power is 1.62 ~ 1.65.

Described white dyes is toluylene benzoxazoles white dyes (OB-1).

Described stablizer is Hinered phenols stablizer.

Described compatilizer is polymethylmethacrylate grafted maleic anhydride (PMMA-g-MAH).

Described oxidation inhibitor is the Hinered phenols antioxidant 1010 of mass ratio 1:2 and the compound of phosphite ester kind antioxidant 168.

Described lubricant is pentaerythritol stearate (PETS).

The preparation method of the PC/PET matrix material of above-mentioned a kind of high-gloss high-impact high strength modification, comprises the following steps:

(1), by PC in blast drier at 110 DEG C ~ 130 DEG C temperature dry 3 ~ 4 hours, PET at 130 DEG C ~ 150 DEG C dry 3 ~ 4 hours, stand-by;

(2), by taking dry PET by weight ratio, process white, white dyes, stablizer, oxidation inhibitor, lubricant add in high-speed mixer, after to make to stir together 3 ~ 10 minutes all mixed, discharging add in twin screw extruder carry out melt extruding, cooling granulation, and stand-by after drying;

(3), the product taking dry PC and step (2) is by weight ratio added in high-speed mixer, add the glass fibre, acrylic impact modifier and the compatilizer that take by weight ratio simultaneously, after to make to stir together 3 ~ 15 minutes all mixed, discharging adds in twin screw extruder, by twin screw extruder fully plastify blended after extrude, cooling granulation, get product.

The invention has the beneficial effects as follows, compared with prior art, the present invention adopts glass fibre and process white to work in coordination with enhancing, enhanced shine, and add appropriate acrylic impact modifier, white dyes, stablizer, compatilizer and other auxiliary agent, the PC/PET composite system obtained is made to have the good modified effect of high gloss, high-impact, high strength, and there is excellent electrical property, ageing-resistant performance and processing characteristics, the fields such as automobile, electronic apparatus, instrument, mechanical means, building materials can be widely used in.

Embodiment

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

A PC/PET matrix material for high-gloss high-impact high strength modification, its component by mass percent proportioning is: PC 55%, PET 21%, glass fibre 10%, Methylacrylate-Acrylate Copolymer (ACR) 5%, process white 2%, toluylene benzoxazoles white dyes (OB-1) 2%, Hinered phenols stablizer 1%, polymethylmethacrylate grafted maleic anhydride (PMMA-g-MAH) 3%, oxidation inhibitor 0.3%, pentaerythritol stearate (PETS) 0.7%.Wherein, described PC is bisphenol A-type aromatic copolycarbonate, and weight-average molecular weight is 20000 ~ 40000g/mol; Described PET is polyethylene terephthalate, and its intrinsic viscosity is 0.6 ~ 0.9dL/g; Described glass fibre be diameter 8 ~ 15 μm, length is 3 ~ 6mm, specific refractory power is alkali free glass fibre between 1.58 ~ 1.60, and its surface is through silane coupling agent process; Described process white to be particle diameter the be active process white of 0.5 ~ 3 μm, its relative density is 4.3 ~ 4.6g/cm ³, specific refractory power is 1.62 ~ 1.65; Described oxidation inhibitor is the Hinered phenols antioxidant 1010 of mass ratio 1:2 and the compound of phosphite ester kind antioxidant 168.

Preparation method: (1), by PC in blast drier at 110 DEG C ~ 130 DEG C temperature dry 3 ~ 4 hours, PET at 130 DEG C ~ 150 DEG C dry 3 ~ 4 hours, stand-by; (2), by taking dry PET by weight ratio, process white, toluylene benzoxazoles white dyes (OB-1), Hinered phenols stablizer, oxidation inhibitor, pentaerythritol stearate (PETS) add in high-speed mixer, after to make to stir together 3 ~ 10 minutes all mixed, discharging add in twin screw extruder carry out melt extruding, cooling granulation, and stand-by after drying; (3), the product taking dry PC and step (2) is by weight ratio added in high-speed mixer, add the glass fibre, Methylacrylate-Acrylate Copolymer (ACR) and the polymethylmethacrylate grafted maleic anhydride (PMMA-g-MAH) that take by weight ratio simultaneously, after to make to stir together 3 ~ 15 minutes all mixed, discharging adds in twin screw extruder, by twin screw extruder fully plastify blended after extrude, cooling granulation, get product.

Claims (8)

1. the PC/PET matrix material of high-gloss high-impact high strength modification, it is characterized in that, its component by mass percent proportioning is: PC 30% ~ 60%, PET 20% ~ 30%, glass fibre 5% ~ 10%, acrylic impact modifier 5% ~ 10%, process white 2% ~ 5%, white dyes 1% ~ 3%, stablizer 0.5% ~ 2%, compatilizer 1% ~ 4%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1.5%.

2. the PC/PET matrix material of a kind of high-gloss high-impact high strength according to claim 1 modification, it is characterized in that, described glass fibre be diameter 8 ~ 15 μm, length is 3 ~ 6mm, specific refractory power is alkali free glass fibre between 1.58 ~ 1.60, and its surface is through silane coupling agent process.

3. the PC/PET matrix material of a kind of high-gloss high-impact high strength according to claim 1 modification, it is characterized in that, described acrylic impact modifier is the one in Methylacrylate-Acrylate Copolymer (ACR), MBS (MBS), methyl methacrylate butadi ene copolymer (MMB), acrylonitrile-styrene-acrylic ester copolymer (ASA).

4. the PC/PET matrix material of a kind of high-gloss high-impact high strength according to claim 1 modification, is characterized in that, described process white to be particle diameter the be active process white of 0.5 ~ 3 μm.

5. the PC/PET matrix material of a kind of high-gloss high-impact high strength according to claim 1 modification, is characterized in that, described white dyes is toluylene benzoxazoles white dyes (OB-1).

6. the PC/PET matrix material of a kind of high-gloss high-impact high strength according to claim 1 modification, is characterized in that, described stablizer is Hinered phenols stablizer.

7. the PC/PET matrix material of a kind of high-gloss high-impact high strength according to claim 1 modification, is characterized in that, described compatilizer is polymethylmethacrylate grafted maleic anhydride (PMMA-g-MAH).

8. the preparation method of the PC/PET matrix material of a kind of high-gloss high-impact high strength according to claim 1 modification, 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, PET at 130 DEG C ~ 150 DEG C dry 3 ~ 4 hours, stand-by;

(2), by taking dry PET by weight ratio, process white, white dyes, stablizer, oxidation inhibitor, lubricant add in high-speed mixer, after to make to stir together 3 ~ 10 minutes all mixed, discharging add in twin screw extruder carry out melt extruding, cooling granulation, and stand-by after drying;

(3), the product taking dry PC and step (2) is by weight ratio added in high-speed mixer, add the glass fibre, acrylic impact modifier and the compatilizer that take by weight ratio simultaneously, after to make to stir together 3 ~ 15 minutes all mixed, discharging adds in twin screw extruder, by twin screw extruder fully plastify blended after extrude, cooling granulation, get product.