CN104845182A - Enhanced thermal conduction type PET/PTT alloy and preparation method thereof - Google Patents

Abstract

The invention discloses an enhanced thermal conduction type PET/PTT alloy and a preparation method thereof. The enhanced thermal conduction type PET/PTT alloy comprises the following components in mass percent: 33-58% of PET, 20-30% of PTT, 2-4% of E-MA-GMA, 8-12% of glass fibers, 4-10% of thermally conductive fillings, 5-8% of toughening agent, 0.5-2% of nanosilicon dioxide, 0.1-0.5% of antioxidant 1010, and 0.1-1% of TAF. According to the invention, the thermally conductive fillings are in the form of carbon nano-tubes. In this way, the original advantages of PET and PTT materials are realized. Meanwhile, the enhanced thermal conduction type PET/PTT alloy is good in heat-conductive and antistatic properties, and obvious better in tensile strength, impact strength and chemical resistance. At the same time, the application effect and the application field of the PET/PTT are promoted.

Description

A kind of enhanced thermal conduction PET/PTT Alloy And Preparation Method

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of enhanced thermal conduction PET/PTT Alloy And Preparation Method.

Background technology

PET(polyethylene terephthalate)/PTT(Poly(Trimethylene Terephthalate)) be a kind of novel plastic alloy material, the performance such as excellent forming process, shock resistance, high temperature heat-resistant are aging, chemical-resistant resistance that it has.But the mechanical property of PET/PTT alloy is unstable, and the higher Application Areas of heat conduction requirement can not be suitable for well, simultaneously because PTT is heated easy buckling deformation, and resistance to electric trace index (CTI) is lower, under low temperature mould, article surface is coarse, these will have influence on the use properties of PET/PTT alloy, thus strongly limit its range of application.

Summary of the invention

The object of the present invention is to provide that a kind of mechanical property is good, wide adaptability and enhanced thermal conduction PET/PTT Alloy And Preparation Method with low cost.

The technical solution adopted for the present invention to solve the technical problems is: a kind of enhanced thermal conduction PET/PTT alloy, and its component by mass percent proportioning is: PET 33% ~ 58%, PTT 20% ~ 30%, E-MA-GMA 2% ~ 4%, glass fibre 8% ~ 12%, heat conductive filler 4% ~ 10%, toughner 5% ~ 8%, nano silicon 0.5% ~ 2%, antioxidant 1010 0.1% ~ 0.5%, TAF 0.1% ~ 1%.

Described PET is polyethylene terephthalate.

Described PTT is Poly(Trimethylene Terephthalate).

Described E-MA-GMA is ethylene-ethylacrylate-glycidyl methacrylate triblock copolymer.

Described glass fibre be surface through γ-aminopropyltrimethoxysilane coupling agent treatment and mean diameter at the alkali-free short glass fiber of 4 ~ 17 μm.

Described heat conductive filler be surface through oxidation pre-treatment and γ-aminopropyltrimethoxysilane coupling agent activation treatment and particle diameter in 0.5 ~ 200nm, length at the carbon nanotube of 5 ~ 20 μm.

Described toughner is the one in Methacrylate-butadiene-styrene, ethylene-acrylate copolymer, acrylonitrile-acrylic acid-styrol copolymer, acrylonitrile-butadiene-styrene copolymer, acrylonitrile ethylene styrene copolymer.

Described TAF is modification ethylene bis-fatty acid amides.

The preparation method of above-mentioned a kind of enhanced thermal conduction PET/PTT alloy, comprises the following steps:

(1), by PET and PTT in forced air circulation baking oven at 110 DEG C ~ 120 DEG C temperature dry 6 ~ 8 hours, stand-by;

(2), by particle diameter at 0.5 ~ 200nm, length reaches in the mass content that the carbon nanotube of 5 ~ 20 μm is placed in volume ratio 3:1 the mixed acid solution that more than 98% sulfuric acid and mass content reach more than 60% nitric acid, under ultra-sonic oscillation and mechanical stirring, process 2 ~ 4h, then use a large amount of washed with de-ionized water to neutral, again the carbon nanotube obtained is placed in mass content 0.1% ~ 1% the deionized water solution ultrasonic disperse 2 ~ 4h of γ-aminopropyltrimethoxysilane coupling agent, then filter, and by gained much filtrate in 120 DEG C ~ 150 DEG C vacuum drying oven drying 12 ~ 36h, obtain described heat conductive filler, stand-by,

(3), taking dry PET and PTT by weight ratio adds in super mixer, add E-MA-GMA, toughner, nano silicon, antioxidant 1010, TAF by weight ratio simultaneously, and add the obtained heat conductive filler of step (2) by weight ratio, make to be mixed together 3 ~ 15 minutes, discharging after fully mixing;

(4), the discharging of step (3) is added the main spout of twin screw extruder, add described glass fibre by weight ratio from the side spout of twin screw extruder simultaneously, by twin screw extruder melting mixing 1 ~ 2 minute, screw speed controls at 150 ~ 500r/min, processing temperature is 180 DEG C ~ 280 DEG C scopes, then extruding pelletization, obtains a kind of enhanced thermal conduction PET/PTT alloy of the present invention.

The invention has the beneficial effects as follows, the present invention have PET, PTT separately former advantageous while, also there is excellent heat conduction antistatic performance, and significantly improve tensile strength, resistance to impact shock and chemical resistance, improve effect and the Application Areas of PET/PTT.

Embodiment

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

Embodiment 1:

A kind of enhanced thermal conduction PET/PTT alloy, its component by mass percent proportioning is: PET 33%, PTT 30%, E-MA-GMA 4%, glass fibre 12%, heat conductive filler 10%, Methacrylate-butadiene-styrene 8%, nano silicon 2%, antioxidant 1010 0.5%, TAF 0.5%, described glass fibre is that surface is through γ-aminopropyltrimethoxysilane coupling agent treatment, and mean diameter is at the alkali-free short glass fiber of 4 ~ 17 μm, described heat conductive filler is that surface is through oxidation pre-treatment and γ-aminopropyltrimethoxysilane coupling agent activation treatment, and particle diameter is at 0.5 ~ 200nm, length is at the carbon nanotube of 5 ~ 20 μm.

Preparation method: (1), by PET and PTT in forced air circulation baking oven at 110 DEG C ~ 120 DEG C temperature dry 6 ~ 8 hours, stand-by, (2), by particle diameter at 0.5 ~ 200nm, length reaches in the mass content that the carbon nanotube of 5 ~ 20 μm is placed in volume ratio 3:1 the mixed acid solution that more than 98% sulfuric acid and mass content reach more than 60% nitric acid, under ultra-sonic oscillation and mechanical stirring, process 2 ~ 4h, then use a large amount of washed with de-ionized water to neutral, again the carbon nanotube obtained is placed in mass content 0.1% ~ 1% the deionized water solution ultrasonic disperse 2 ~ 4h of γ-aminopropyltrimethoxysilane coupling agent, then filter, and by gained much filtrate in 120 DEG C ~ 150 DEG C vacuum drying oven drying 12 ~ 36h, obtain described heat conductive filler, stand-by, (3), taking dry PET and PTT by weight ratio adds in super mixer, add E-MA-GMA, Methacrylate-butadiene-styrene, nano silicon, antioxidant 1010, TAF by weight ratio simultaneously, and add the obtained heat conductive filler of step (2) by weight ratio, make to be mixed together 3 ~ 15 minutes, discharging after fully mixing, (4), the discharging of step (3) is added the main spout of twin screw extruder, add described glass fibre by weight ratio from the side spout of twin screw extruder simultaneously, by twin screw extruder melting mixing 1 ~ 2 minute, screw speed controls at 150 ~ 500r/min, processing temperature is 180 DEG C ~ 280 DEG C scopes, then extruding pelletization, obtains a kind of enhanced thermal conduction PET/PTT alloy of the present invention.

Embodiment 2:

A kind of enhanced thermal conduction PET/PTT alloy, its component by mass percent proportioning is: PET 58%, PTT 20%, E-MA-GMA 3%, glass fibre 8%, heat conductive filler 4%, acrylonitrile-butadiene-styrene copolymer 5%, nano silicon 1%, antioxidant 1010 0.1%, TAF 0.9%, described glass fibre is that surface is through γ-aminopropyltrimethoxysilane coupling agent treatment, and mean diameter is at the alkali-free short glass fiber of 4 ~ 17 μm, described heat conductive filler is that surface is through oxidation pre-treatment and γ-aminopropyltrimethoxysilane coupling agent activation treatment, and particle diameter is at 0.5 ~ 200nm, length is at the carbon nanotube of 5 ~ 20 μm.

Preparation method: (1), by PET and PTT in forced air circulation baking oven at 110 DEG C ~ 120 DEG C temperature dry 6 ~ 8 hours, stand-by, (2), by particle diameter at 0.5 ~ 200nm, length reaches in the mass content that the carbon nanotube of 5 ~ 20 μm is placed in volume ratio 3:1 the mixed acid solution that more than 98% sulfuric acid and mass content reach more than 60% nitric acid, under ultra-sonic oscillation and mechanical stirring, process 2 ~ 4h, then use a large amount of washed with de-ionized water to neutral, again the carbon nanotube obtained is placed in mass content 0.1% ~ 1% the deionized water solution ultrasonic disperse 2 ~ 4h of γ-aminopropyltrimethoxysilane coupling agent, then filter, and by gained much filtrate in 120 DEG C ~ 150 DEG C vacuum drying oven drying 12 ~ 36h, obtain described heat conductive filler, stand-by, (3), taking dry PET and PTT by weight ratio adds in super mixer, add E-MA-GMA, acrylonitrile-butadiene-styrene copolymer, nano silicon, antioxidant 1010, TAF by weight ratio simultaneously, and add the obtained heat conductive filler of step (2) by weight ratio, make to be mixed together 3 ~ 15 minutes, discharging after fully mixing, (4), the discharging of step (3) is added the main spout of twin screw extruder, add described glass fibre by weight ratio from the side spout of twin screw extruder simultaneously, by twin screw extruder melting mixing 1 ~ 2 minute, screw speed controls at 150 ~ 500r/min, processing temperature is 180 DEG C ~ 280 DEG C scopes, then extruding pelletization, obtains a kind of enhanced thermal conduction PET/PTT alloy of the present invention.

Claims (5)

1. an enhanced thermal conduction PET/PTT alloy, it is characterized in that, its component by mass percent proportioning is: PET 33% ~ 58%, PTT 20% ~ 30%, E-MA-GMA 2% ~ 4%, glass fibre 8% ~ 12%, heat conductive filler 4% ~ 10%, toughner 5% ~ 8%, nano silicon 0.5% ~ 2%, antioxidant 1010 0.1% ~ 0.5%, TAF 0.1% ~ 1%.

2. a kind of enhanced thermal conduction PET/PTT alloy according to claim 1, is characterized in that, described glass fibre be surface through γ-aminopropyltrimethoxysilane coupling agent treatment and mean diameter at the alkali-free short glass fiber of 4 ~ 17 μm.

3. a kind of enhanced thermal conduction PET/PTT alloy according to claim 1, it is characterized in that, described heat conductive filler be surface through oxidation pre-treatment and γ-aminopropyltrimethoxysilane coupling agent activation treatment and particle diameter in 0.5 ~ 200nm, length at the carbon nanotube of 5 ~ 20 μm.

4. a kind of enhanced thermal conduction PET/PTT alloy according to claim 1, it is characterized in that, described toughner is the one in Methacrylate-butadiene-styrene, ethylene-acrylate copolymer, acrylonitrile-acrylic acid-styrol copolymer, acrylonitrile-butadiene-styrene copolymer, acrylonitrile ethylene styrene copolymer.

5. the preparation method of a kind of enhanced thermal conduction PET/PTT alloy according to claim 1, is characterized in that, comprise the following steps:

(1), by PET and PTT in forced air circulation baking oven at 110 DEG C ~ 120 DEG C temperature dry 6 ~ 8 hours, stand-by;

(2), by particle diameter at 0.5 ~ 200nm, length reaches in the mass content that the carbon nanotube of 5 ~ 20 μm is placed in volume ratio 3:1 the mixed acid solution that more than 98% sulfuric acid and mass content reach more than 60% nitric acid, under ultra-sonic oscillation and mechanical stirring, process 2 ~ 4h, then use a large amount of washed with de-ionized water to neutral, again the carbon nanotube obtained is placed in mass content 0.1% ~ 1% the deionized water solution ultrasonic disperse 2 ~ 4h of γ-aminopropyltrimethoxysilane coupling agent, then filter, and by gained much filtrate in 120 DEG C ~ 150 DEG C vacuum drying oven drying 12 ~ 36h, obtain described heat conductive filler, stand-by,

(3), taking dry PET and PTT by weight ratio adds in super mixer, add E-MA-GMA, toughner, nano silicon, antioxidant 1010, TAF by weight ratio simultaneously, and add the obtained heat conductive filler of step (2) by weight ratio, make to be mixed together 3 ~ 15 minutes, discharging after fully mixing;

(4), the discharging of step (3) is added the main spout of twin screw extruder, add described glass fibre by weight ratio from the side spout of twin screw extruder simultaneously, by twin screw extruder melting mixing 1 ~ 2 minute, screw speed controls at 150 ~ 500r/min, processing temperature is 180 DEG C ~ 280 DEG C scopes, then extruding pelletization, obtains a kind of enhanced thermal conduction PET/PTT alloy of the present invention.