CN104845181A - Antistatic and modified PET/PTT/PETG composite material - Google Patents

Abstract

The present invention discloses an antistatic and modified PET/PTT/PETG composite material, which comprises the following components in mass percentage: 25-60% of PET, 15-30% of PTT, 10-15% of PETG, 2-4% of SMA, 5-8% of MBS, 1-3% of antistatic agent, 0.1-0.5% of anti-oxidant, 0.1-1% of lubricant, and 5-15% of modified alumina filler. The surface of the modified alumina filler is subjected to the modified treatment by means of a silane coupling agent, and the particle size of the modified alumina filler is 30-50 nm. According to the invention, the original advantages of PET, PTT and PETG are integrated, and the composite material is excellent in antistatic effect and extremely high in heat resistance at the same time. Meanwhile, the composite material is good in mechanical property, low in cost and wide in adaptability, thus being suitable for industrial production, popularization and application.

Description

A kind of antistatic modified PET/PTT/PETG matrix material

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of antistatic modified PET/PTT/PETG matrix material.

Background technology

Polyethylene terephthalate (PET)/Poly(Trimethylene Terephthalate) (PTT) belongs to a kind of novel high molecular plastic alloy material, it has the performances such as excellent forming process, shock resistance, chemical-resistant resistance, thus will have broad application prospects in automobile, electric, the field such as household electrical appliances, fiber.But the mechanical property of PET/PTT is unstable, hot bad, the poor fire of resistance to height etc., will significantly limit its effect.In order to promote the performance of PET/PTT, often need to add three components in PET/PTT, to obtain the composite system having much practical value.Polyethylene terephthalate-1,4-cyclohexanedimethanoester ester (PETG) is by terephthalic acid, ethylene glycol and 1, a kind of non-crystalline type copolyesters of 4-cyclohexanedimethanol three kinds of monomer ester-interchange methods polycondensation, it has, and transparency is high, glossiness is high, a kind of transparent engineering plastics completely newly, and the shock strength excellence of PETG, good heat resistance, mar-proof, ageing-resistant, anti-electrostatic, chemical resistant properties excellence, hydrolytic resistance, good fluidity, strong coloring force, be easy to forming process, wholesomeness is good, belongs to environmentally-friendly plastic of new generation.Therefore, PET/PTT/PETG material prepared by PETG and PET/PTT blending and modifying, performance can be learnt from other's strong points to offset one's weaknesses, and there is excellent over-all properties and good application prospect, but PET/PTT/PETG easily produces electrostatic in production and use procedure, dust suction or electric discharge harm will be caused, have impact on its use properties.

Summary of the invention

The object of the present invention is to provide a kind of antistatic modified PET/PTT/PETG matrix material.

The technical solution adopted for the present invention to solve the technical problems is: a kind of antistatic modified PET/PTT/PETG matrix material, and its component by mass percent proportioning is: PET 25% ~ 60%, PTT 15% ~ 30%, PETG 10% ~ 15%, SMA 2% ~ 4%, MBS 5% ~ 8%, static inhibitor 1% ~ 3%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%, modified oxidized Al filler 5% ~ 15%.

The polyethylene terephthalate of described PET to be intrinsic viscosity be 0.8 ~ 1.2dL/g.

Described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.2dL/g.

Described PETG is polyethylene terephthalate-1,4 cyclohexane dimethanol ester.

Described SMA is styrene-grafted copolymer-maleic anhydride.

Described MBS is the MBS with nucleocapsid structure.

Described static inhibitor is at least one in fatty acid polyglycol ester, polyethylene glycol alkyl ether, polyethylene oxide, polyether ester amides, polyether ester imide, glycerol monostearate, alkyl sodium sulfonate, Nanometer-sized Antimony-doped stannic oxide.

Described oxidation inhibitor is the Hinered phenols antioxidant 1010 or 1076 of mass ratio 1:1 and the compound of phosphite ester kind antioxidant 168.

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

Described modified oxidized Al filler is that surface is through the silane coupler modified and particle diameter alumina nanoparticles at 30 ~ 50nm.

The preparation method of above-mentioned a kind of antistatic modified PET/PTT/PETG matrix material, comprises the following steps:

(1), by PET, PTT and PETG in forced air circulation baking oven at 120 DEG C ~ 140 DEG C temperature dry 3 ~ 4 hours, stand-by;

(2), taking dry PTT by weight ratio adds in super mixer, and add static inhibitor, oxidation inhibitor, lubricant by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds twin screw extruder and melt extrudes pelletizing and after drying, namely obtain a kind of antistatic master batch based on PTT;

(3), taking dry PET and PETG by weight ratio adds in super mixer, add the antistatic master batch that step (2) obtains again, and add SMA, MBS and modified oxidized Al filler by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds in twin screw extruder, extrudes, cooling granulation at 210 DEG C ~ 280 DEG C after melt blending, then dry, obtain the antistatic modified PET/PTT/PETG matrix material of one of the present invention.

The invention has the beneficial effects as follows, the present invention combines PET, PTT and PETG advantage separately, and has excellent antistatic effect and high thermotolerance, and mechanical property is good, and cost is low, wide adaptability, is suitable for suitability for industrialized production and applies.

Embodiment

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

Embodiment 1:

A kind of antistatic modified PET/PTT/PETG matrix material, its component by mass percent proportioning is: PET 25%, PTT 30%, PETG 15%, SMA 3%, MBS 8%, polyethylene glycol alkyl ether 3%, oxidation inhibitor 0.5%, calcium stearate 0.5%, modified oxidized Al filler 15%, described oxidation inhibitor is the Hinered phenols antioxidant 1010 of mass ratio 1:1 and the compound of phosphite ester kind antioxidant 168, and described modified oxidized Al filler is surface through the silane coupler modified and particle diameter alumina nanoparticles at 30 ~ 50nm.

Preparation method: (1), by PET, PTT and PETG in forced air circulation baking oven at 120 DEG C ~ 140 DEG C temperature dry 3 ~ 4 hours, stand-by; (2), taking dry PTT by weight ratio adds in super mixer, and add polyethylene glycol alkyl ether, oxidation inhibitor, calcium stearate by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds twin screw extruder and melt extrudes pelletizing and after drying, namely obtain a kind of antistatic master batch based on PTT; (3), taking dry PET and PETG by weight ratio adds in super mixer, add the antistatic master batch that step (2) obtains again, and add SMA, MBS and modified oxidized Al filler by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds in twin screw extruder, extrudes, cooling granulation at 210 DEG C ~ 280 DEG C after melt blending, then dry, obtain the antistatic modified PET/PTT/PETG matrix material of one of the present invention.

Embodiment 2:

A kind of antistatic modified PET/PTT/PETG matrix material, its component by mass percent proportioning is: PET 60%, PTT 15%, PETG 10%, SMA 3%, MBS 5%, glycerol monostearate 1.5%, oxidation inhibitor 0.1%, pentaerythritol stearate 0.4%, modified oxidized Al filler 5%, described oxidation inhibitor is the Hinered phenols antioxidant 1076 of mass ratio 1:1 and the compound of phosphite ester kind antioxidant 168, and described modified oxidized Al filler is surface through the silane coupler modified and particle diameter alumina nanoparticles at 30 ~ 50nm.

Preparation method: (1), by PET, PTT and PETG in forced air circulation baking oven at 120 DEG C ~ 140 DEG C temperature dry 3 ~ 4 hours, stand-by; (2), taking dry PTT by weight ratio adds in super mixer, and add glycerol monostearate, oxidation inhibitor, pentaerythritol stearate by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds twin screw extruder and melt extrudes pelletizing and after drying, namely obtain a kind of antistatic master batch based on PTT; (3), taking dry PET and PETG by weight ratio adds in super mixer, add the antistatic master batch that step (2) obtains again, and add SMA, MBS and modified oxidized Al filler by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds in twin screw extruder, extrudes, cooling granulation at 210 DEG C ~ 280 DEG C after melt blending, then dry, obtain the antistatic modified PET/PTT/PETG matrix material of one of the present invention.

Claims (5)

1. an antistatic modified PET/PTT/PETG matrix material, it is characterized in that, its component by mass percent proportioning is: PET 25% ~ 60%, PTT 15% ~ 30%, PETG 10% ~ 15%, SMA 2% ~ 4%, MBS 5% ~ 8%, static inhibitor 1% ~ 3%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%, modified oxidized Al filler 5% ~ 15%.

2. the antistatic modified PET/PTT/PETG matrix material of one according to claim 1, it is characterized in that, described static inhibitor is at least one in fatty acid polyglycol ester, polyethylene glycol alkyl ether, polyethylene oxide, polyether ester amides, polyether ester imide, glycerol monostearate, alkyl sodium sulfonate, Nanometer-sized Antimony-doped stannic oxide.

3. the antistatic modified PET/PTT/PETG matrix material of one according to claim 1, is characterized in that, described oxidation inhibitor is the Hinered phenols antioxidant 1010 or 1076 of mass ratio 1:1 and the compound of phosphite ester kind antioxidant 168.

4. the antistatic modified PET/PTT/PETG matrix material of one according to claim 1, is characterized in that, described modified oxidized Al filler is that surface is through the silane coupler modified and particle diameter alumina nanoparticles at 30 ~ 50nm.

5. the preparation method of a kind of antistatic modified PET/PTT/PETG matrix material according to claim 1, is characterized in that, comprise the following steps:

(1), by PET, PTT and PETG in forced air circulation baking oven at 120 DEG C ~ 140 DEG C temperature dry 3 ~ 4 hours, stand-by;

(2), taking dry PTT by weight ratio adds in super mixer, and add static inhibitor, oxidation inhibitor, lubricant by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds twin screw extruder and melt extrudes pelletizing and after drying, namely obtain a kind of antistatic master batch based on PTT;

(3), taking dry PET and PETG by weight ratio adds in super mixer, add the antistatic master batch that step (2) obtains again, and add SMA, MBS and modified oxidized Al filler by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds in twin screw extruder, extrudes, cooling granulation at 210 DEG C ~ 280 DEG C after melt blending, then dry, obtain the antistatic modified PET/PTT/PETG matrix material of one of the present invention.