CN104845096A - Reinforced polyethylene glycol terephthalate alloy and preparation method thereof - Google Patents

Abstract

The invention discloses a reinforced polyethylene glycol terephthalate alloy and a preparation method thereof. The reinforced polyethylene glycol terephthalate alloy provided by the invention comprises the following components by weight: 20% to 70% of PET, 20% to 40% of PTT, 5% to 15% of nanometer carbon fiber, 8% to 12% of glass fiber, 2% to 4% of a compatibilizer, 5% to 8% of elastomer, 0.1% to 1% of a nucleating agent, 0.1% to 0.5% of an antioxidant and 0.1% to 1% of PETS. The invention has the following beneficial effects: through the blending modification effect of the nanometer carbon fiber, the glass fiber and PTT in the invention, the obtained alloy material has significant application effects of reinforcement, rigidity and exellent heat resistance, has good formation, smooth and clean surface and strong chemical resistance and greatly improves the application scopes of the polyethylene glycol terephthalate alloy.

Description

A kind of enhancing polyethylene terephthalate Alloy And Preparation Method

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of enhancing polyethylene terephthalate Alloy And Preparation Method.

Background technology

Polyethylene terephthalate (PET) a kind ofly has higher melt temperature and the crystalline polymer of second-order transition temperature, excellent physicals and mechanical property is kept in certain temperature range, its resistance to fatigue, rub resistance, ageing resistance, electrical insulating property feature are very outstanding, to most of organic solvent and acid more stable, production energy consumption is lower, is thus widely used in the fields such as synthon, film and engineering plastics.But because PET rigidity is comparatively forced toughness of material is poor, crystallization velocity is comparatively slow, the shortcomings such as the high and shaping cycle of forming mould temperature is long, greatly limit its range of application.

Summary of the invention

The enhancing polyethylene terephthalate Alloy And Preparation Method that the object of the present invention is to provide a kind of mechanical property good He with low cost.

The technical solution adopted for the present invention to solve the technical problems is: a kind of enhancing polyethylene terephthalate alloy, its component by mass percent proportioning is: PET 20% ~ 70%, PTT 20% ~ 40%, carbon nano fiber 5% ~ 15%, glass fibre 8% ~ 12%, expanding material 2% ~ 4%, elastomerics 5% ~ 8%, nucleator 0.1% ~ 1%, oxidation inhibitor 0.1% ~ 0.5%, PETS 0.1% ~ 1%.

Described PET is polyethylene terephthalate.

Described PTT is Poly(Trimethylene Terephthalate).

Described carbon nano fiber be surface through oxygen (O2) plasma modification process and diameter at the gas-phase grown nanometer carbon fibre of 50nm ~ 200nm, the process of described oxygen (O2) plasma modification is inserted by carbon nano fiber in the case of oxygen (O2) plasma body that vacuum tightness is l ~ 0.2mmHg, input voltage is 220V, process 1 ~ 3 minute, then obtain carbon nano fiber expose 5 ~ 25 minutes in dry air after.

Described glass fibre be surface through silane coupling agent process and diameter at 8 ~ 12 μm, the alkali free glass fibre of length in 3 ~ 6mm, length-to-diameter ratio 7 ~ 9 scope.

Described expanding material is the one in styrene-grafted copolymer-maleic anhydride SMA, styrene-acrylonitrile-methacrylic sour water glyceryl ester SAG, methyl methacrylate-glycidyl methacrylate-ethyl propenoate ter-polymers MGE, acrylonitritrile-styrene resin graft glycidyl methacrylate AS-g-GMA.

Described elastomerics is polybutylene terephthalate-polyethylene oxide-poly(propylene oxide) thermoplastic elastomer TPEE.

Described nucleator is the one in nano silicon, sodium bicarbonate, Sodium Benzoate.

Described oxidation inhibitor is the one in the compound of antioxidant 1010, antioxidant 1076, antioxidant 1010 or antioxidant 1076 and irgasfos 168.

Described PETS is lubricant pentaerythritol stearate.

Above-mentioned a kind of preparation method strengthening polyethylene terephthalate alloy, comprises the following steps:

(1), by PET and PTT in forced air circulation baking oven at 110 DEG C ~ 130 DEG C temperature dry 6 ~ 8 hours, stand-by;

(2), taking dry PET and PTT by weight ratio adds in super mixer, add described carbon nano fiber, expanding material, elastomerics, nucleator, oxidation inhibitor, PETS by weight ratio simultaneously, make to be mixed together 3 ~ 15 minutes, after fully mixing, discharging;

(3), the discharging of step (2) is added in twin screw extruder, through melting mixing, extruding pelletization at 210 DEG C ~ 280 DEG C temperature, obtain one of the present invention and strengthen polyethylene terephthalate alloy.

The invention has the beneficial effects as follows, the present invention passes through the Modification Effects of Nano carbon fibers peacekeeping glass fibre and PTT, make to obtain alloy material to there is obvious enhancing, increased just and the effect of superior heat resistance performance, and be shaped, any surface finish, chemical resistant properties is strong, greatly improves the range of application of Poly(Trimethylene Terephthalate) alloy.

Embodiment

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

Embodiment 1:

A kind of enhancing polyethylene terephthalate alloy, its component by mass percent proportioning is: PET 48%, PTT 20%, carbon nano fiber 15%, glass fibre 8%, SMA 2%, TPEE 5%, sodium bicarbonate 1%, antioxidant 1010 0.1%, PETS 0.9%, described carbon nano fiber is that surface is through the process of oxygen (O2) plasma modification, and diameter is at the gas-phase grown nanometer carbon fibre of 50nm ~ 200nm, the process of described oxygen (O2) plasma modification is that carbon nano fiber to be inserted vacuum tightness be l ~ 0.2mmHg, input voltage is in the case of oxygen (O2) plasma body of 220V, process 1 ~ 3 minute, the carbon nano fiber that obtains after exposing 5 ~ 25 minutes again in dry air, described glass fibre be surface through silane coupling agent process and diameter at 8 ~ 12 μm, the alkali free glass fibre of length in 3 ~ 6mm, length-to-diameter ratio 7 ~ 9 scope.

Preparation method: (1), by PET and PTT in forced air circulation baking oven at 110 DEG C ~ 130 DEG C temperature dry 6 ~ 8 hours, stand-by; (2), taking dry PET and PTT by weight ratio adds in super mixer, add described carbon nano fiber, SMA, TPEE, sodium bicarbonate, antioxidant 1010, PETS by weight ratio simultaneously, make to be mixed together 3 ~ 15 minutes, after fully mixing, discharging; (3), the discharging of step (2) is added in twin screw extruder, through melting mixing, extruding pelletization at 210 DEG C ~ 280 DEG C temperature, obtain one of the present invention and strengthen polyethylene terephthalate alloy.

Embodiment 2:

A kind of enhancing polyethylene terephthalate alloy, its component by mass percent proportioning is: PET 36%, PTT 30%, carbon nano fiber 10%, glass fibre 12%, AS-g-GMA 3%, TPEE 8%, Sodium Benzoate 0.1%, the compound 0.3% of antioxidant 1010 and irgasfos 168, PETS 0.6%, described carbon nano fiber is that surface is through the process of oxygen (O2) plasma modification, and diameter is at the gas-phase grown nanometer carbon fibre of 50nm ~ 200nm, the process of described oxygen (O2) plasma modification is that carbon nano fiber to be inserted vacuum tightness be l ~ 0.2mmHg, input voltage is in the case of oxygen (O2) plasma body of 220V, process 1 ~ 3 minute, the carbon nano fiber that obtains after exposing 5 ~ 25 minutes again in dry air, described glass fibre be surface through silane coupling agent process and diameter at 8 ~ 12 μm, the alkali free glass fibre of length in 3 ~ 6mm, length-to-diameter ratio 7 ~ 9 scope.

Preparation method: (1), by PET and PTT in forced air circulation baking oven at 110 DEG C ~ 130 DEG C temperature dry 6 ~ 8 hours, stand-by; (2), taking dry PET and PTT by weight ratio adds in super mixer, add compound, the PETS of described carbon nano fiber, AS-g-GMA, TPEE, Sodium Benzoate, antioxidant 1010 and irgasfos 168 by weight ratio simultaneously, make to be mixed together 3 ~ 15 minutes, after fully mixing, discharging; (3), the discharging of step (2) is added in twin screw extruder, through melting mixing, extruding pelletization at 210 DEG C ~ 280 DEG C temperature, obtain one of the present invention and strengthen polyethylene terephthalate alloy.

Claims (8)

1. one kind strengthens polyethylene terephthalate alloy, it is characterized in that, its component by mass percent proportioning is: PET 20% ~ 70%, PTT 20% ~ 40%, carbon nano fiber 5% ~ 15%, glass fibre 8% ~ 12%, expanding material 2% ~ 4%, elastomerics 5% ~ 8%, nucleator 0.1% ~ 1%, oxidation inhibitor 0.1% ~ 0.5%, PETS 0.1% ~ 1%.

2. one according to claim 1 strengthens polyethylene terephthalate alloy, it is characterized in that, described carbon nano fiber be surface through oxygen (O2) plasma modification process and diameter at the gas-phase grown nanometer carbon fibre of 50nm ~ 200nm, the process of described oxygen (O2) plasma modification is inserted by carbon nano fiber in the case of oxygen (O2) plasma body that vacuum tightness is l ~ 0.2mmHg, input voltage is 220V, process 1 ~ 3 minute, then obtain carbon nano fiber expose 5 ~ 25 minutes in dry air after.

3. one according to claim 1 strengthens polyethylene terephthalate alloy, it is characterized in that, described glass fibre be surface through silane coupling agent process and diameter at 8 ~ 12 μm, the alkali free glass fibre of length in 3 ~ 6mm, length-to-diameter ratio 7 ~ 9 scope.

4. one according to claim 1 strengthens polyethylene terephthalate alloy, it is characterized in that, described expanding material is the one in styrene-grafted copolymer-maleic anhydride, styrene-acrylonitrile-methacrylic sour water glyceryl ester, methyl methacrylate-glycidyl methacrylate-ethyl propenoate ter-polymers, acrylonitritrile-styrene resin graft glycidyl methacrylate.

5. one according to claim 1 strengthens polyethylene terephthalate alloy, and it is characterized in that, described elastomerics is polybutylene terephthalate-polyethylene oxide-poly(propylene oxide) thermoplastic elastomer.

6. one according to claim 1 strengthens polyethylene terephthalate alloy, and it is characterized in that, described nucleator is the one in nano silicon, sodium bicarbonate, Sodium Benzoate.

7. one according to claim 1 strengthens polyethylene terephthalate alloy, and it is characterized in that, described oxidation inhibitor is the one in the compound of antioxidant 1010, antioxidant 1076, antioxidant 1010 or antioxidant 1076 and irgasfos 168.

8. a kind of preparation method strengthening polyethylene terephthalate 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 ~ 130 DEG C temperature dry 6 ~ 8 hours, stand-by;

(2), taking dry PET and PTT by weight ratio adds in super mixer, add described carbon nano fiber, expanding material, elastomerics, nucleator, oxidation inhibitor, PETS by weight ratio simultaneously, make to be mixed together 3 ~ 15 minutes, after fully mixing, discharging;

(3), the discharging of step (2) is added in twin screw extruder, through melting mixing, extruding pelletization at 210 DEG C ~ 280 DEG C temperature, obtain one of the present invention and strengthen polyethylene terephthalate alloy.