CN104845190A - PET/PTT/nano-carbon fiber composite material and preparation method thereof - Google Patents

Abstract

The present invention discloses a PET/PTT/nano-carbon fiber composite material and a preparation method thereof. The PET/PTT/nano-carbon fiber composite material comprises the following components in mass percent: 40% to 70% of PET, 10% to 25% of PTT, 8% to 15% of nano-carbon fibers, 2% to 4% of SMA, 5% to 8% of TPEE, 0.1% to 1% of nucleating agent, 0.1% to 0.5% of antioxidant and 0.1% to 1% of PETS. According to the invention, the PET/PTT/nano-carbon fiber composite material is subjected to the oxygen (O2) plasma surface treatment. Therefore, the original advantages of PET and PTT materials are realized, while the strength, the stiffness and the heat resistance of the material are significantly improved. The material is good in electric performance, low in cost, simple in preparation process and easy to promote.

Description

A kind of PET/PTT/ Carbon Nanofibers/Epoxy Resin Composite Materials and preparation method thereof

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of PET/PTT/ Carbon Nanofibers/Epoxy Resin Composite Materials and preparation method thereof.

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.

Poly(Trimethylene Terephthalate) (PTT) is that a kind of crystallization velocity is fast, happy and harmonious temperature and the lower crystalline polymer of second-order transition temperature, there is excellent especially flexibility, elastic recovery, the stability feature of processing characteristics, electric property, mechanical property and size; PTT fiber maintains excellent crease resistance and the chemical resistant properties of PET fiber, flexibility, anti-Japanese photosensitiveness, resistance to soiling, low static behaviour, easy dyeing, low water absorption have the features such as certain hydrolytic stability.But its modulus is lower, material is softer limits PTT use range.

Carbon nano fiber has higher intensity and Young's modulus, and conduction, heat conduction and thermostability and fabulous surface size effect etc., thus have been a great deal of attention preferably; An important use of carbon nano fiber improves mechanical property, and it can reach the same reinforced effects of continuous carbon fibre, but price is only equivalent to glass fibre.

By the plastics composite of PET, PTT and the blended preparation of carbon nano fiber three, performance can be learnt from other's strong points to offset one's weaknesses, but also there is the premium propertiess such as excellent forming process, shock resistance, high temperature heat-resistant are aging, chemical-resistant resistance.Thus PET/PTT/carbon nano fiber will have good effect and Application Areas, and has good practical value.

Summary of the invention

The object of the present invention is to provide a kind of high comprehensive performance and the simple PET/PTT/ Carbon Nanofibers/Epoxy Resin Composite Materials of preparation technology and preparation method thereof.

The technical solution adopted for the present invention to solve the technical problems is: a kind of PET/PTT/ Carbon Nanofibers/Epoxy Resin Composite Materials, and its component by mass percent proportioning is: PET 40% ~ 70%, PTT 10% ~ 25%, carbon nano fiber 8% ~ 15%, SMA 2% ~ 4%, TPEE 5% ~ 8%, nucleator 0.1% ~ 1%, oxidation inhibitor 0.1% ~ 0.5%, PETS 0.1% ~ 1%.

The polyethylene terephthalate of described PET to be intrinsic viscosity be 0.6 ~ 1.2dL/g.

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

Described carbon nano fiber is the surperficial carbon nano fiber plasma treated through oxygen (O2).

Described SMA is compatilizer styrene-grafted copolymer-maleic anhydride.

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

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.

The preparation method of above-mentioned a kind of PET/PTT/ Carbon Nanofibers/Epoxy Resin Composite Materials, 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), carbon nano fiber Surface Oxygen (O2) plasma treatment: carbon nano fiber is inserted in the case of oxygen (O2) plasma body that vacuum tightness is l ~ 0.2mmHg, input voltage is 220V, process 2 ~ 5 minutes, 15 ~ 30 minutes are exposed again in dry air, namely the carbon nano fiber that surface is crossed through oxygen plasma treatment is obtained, and stand-by after drying;

(3), taking dry PET and PTT by weight ratio adds in super mixer, add SMA, TPEE, nucleator, oxidation inhibitor, PETS by weight ratio simultaneously, and add the product that step (2) obtains by weight ratio, make to be mixed together 3 ~ 15 minutes, after fully mixing, discharging;

(4), the discharging of step (3) is added in twin screw extruder, through melting mixing, extruding pelletization at 210 DEG C ~ 280 DEG C temperature, obtain a kind of PET/PTT/ Carbon Nanofibers/Epoxy Resin Composite Materials of the present invention.

The invention has the beneficial effects as follows, the present invention is having PET, PTT concurrently separately while original excellent properties, and also significantly improve intensity, rigidity and resistance toheat, and electrical property is excellent, cost is low, and preparation technology is simple, is easy to promote.

Embodiment

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

Embodiment 1:

A kind of PET/PTT/ Carbon Nanofibers/Epoxy Resin Composite Materials, its component by mass percent proportioning is: PET 46%, PTT 25%, carbon nano fiber 15%, SMA 4%, TPEE 8%, nano silicon 1%, antioxidant 1010 0.1%, PETS 0.9%, the polyethylene terephthalate of described PET to be intrinsic viscosity be 0.6 ~ 1.2dL/g, described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.2dL/g, and described carbon nano fiber is the surperficial carbon nano fiber plasma treated through oxygen (O2).

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), carbon nano fiber Surface Oxygen (O2) plasma treatment: carbon nano fiber is inserted in the case of oxygen (O2) plasma body that vacuum tightness is l ~ 0.2mmHg, input voltage is 220V, process 2 ~ 5 minutes, 15 ~ 30 minutes are exposed again in dry air, namely the carbon nano fiber that surface is crossed through oxygen plasma treatment is obtained, and stand-by after drying; (3), taking dry PET and PTT by weight ratio adds in super mixer, add SMA, TPEE, nano silicon, antioxidant 1010, PETS by weight ratio simultaneously, and add the product that step (2) obtains by weight ratio, make to be mixed together 3 ~ 15 minutes, after fully mixing, discharging; (4), the discharging of step (3) is added in twin screw extruder, through melting mixing, extruding pelletization at 210 DEG C ~ 280 DEG C temperature, obtain a kind of PET/PTT/ Carbon Nanofibers/Epoxy Resin Composite Materials of the present invention.

Embodiment 2:

A kind of PET/PTT/ Carbon Nanofibers/Epoxy Resin Composite Materials, its component by mass percent proportioning is: the compound 0.2% of PET 69%, PTT 15%, carbon nano fiber 8%, SMA 2%, TPEE 5%, Sodium Benzoate 0.3%, antioxidant 1076 and irgasfos 168, PETS 0.5%, the polyethylene terephthalate of described PET to be intrinsic viscosity be 0.6 ~ 1.2dL/g, described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.2dL/g, and described carbon nano fiber is the surperficial carbon nano fiber plasma treated through oxygen (O2).

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), carbon nano fiber Surface Oxygen (O2) plasma treatment: carbon nano fiber is inserted in the case of oxygen (O2) plasma body that vacuum tightness is l ~ 0.2mmHg, input voltage is 220V, process 2 ~ 5 minutes, 15 ~ 30 minutes are exposed again in dry air, namely the carbon nano fiber that surface is crossed through oxygen plasma treatment is obtained, and stand-by after drying; (3), taking dry PET and PTT by weight ratio adds in super mixer, add compound, the PETS of SMA, TPEE, Sodium Benzoate, antioxidant 1076 and irgasfos 168 by weight ratio simultaneously, and add the product that step (2) obtains by weight ratio, make to be mixed together 3 ~ 15 minutes, after fully mixing, discharging; (4), the discharging of step (3) is added in twin screw extruder, through melting mixing, extruding pelletization at 210 DEG C ~ 280 DEG C temperature, obtain a kind of PET/PTT/ Carbon Nanofibers/Epoxy Resin Composite Materials of the present invention.

Claims (5)

1. a PET/PTT/ Carbon Nanofibers/Epoxy Resin Composite Materials, it is characterized in that, its component by mass percent proportioning is: PET 40% ~ 70%, PTT 10% ~ 25%, carbon nano fiber 8% ~ 15%, SMA 2% ~ 4%, TPEE 5% ~ 8%, nucleator 0.1% ~ 1%, oxidation inhibitor 0.1% ~ 0.5%, PETS 0.1% ~ 1%.

2. a kind of PET/PTT/ Carbon Nanofibers/Epoxy Resin Composite Materials according to claim 1, is characterized in that, described carbon nano fiber is the surperficial carbon nano fiber plasma treated through oxygen (O2).

3. a kind of PET/PTT/ Carbon Nanofibers/Epoxy Resin Composite Materials according to claim 1, is characterized in that, described nucleator is the one in nano silicon, sodium bicarbonate, Sodium Benzoate.

4. a kind of PET/PTT/ Carbon Nanofibers/Epoxy Resin Composite Materials according to claim 1, 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.

5. the preparation method of a kind of PET/PTT/ Carbon Nanofibers/Epoxy Resin Composite Materials 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), carbon nano fiber Surface Oxygen (O2) plasma treatment: carbon nano fiber is inserted in the case of oxygen (O2) plasma body that vacuum tightness is l ~ 0.2mmHg, input voltage is 220V, process 2 ~ 5 minutes, 15 ~ 30 minutes are exposed again in dry air, namely the carbon nano fiber that surface is crossed through oxygen plasma treatment is obtained, and stand-by after drying;

(3), taking dry PET and PTT by weight ratio adds in super mixer, add SMA, TPEE, nucleator, oxidation inhibitor, PETS by weight ratio simultaneously, and add the product that step (2) obtains by weight ratio, make to be mixed together 3 ~ 15 minutes, after fully mixing, discharging;

(4), the discharging of step (3) is added in twin screw extruder, through melting mixing, extruding pelletization at 210 DEG C ~ 280 DEG C temperature, obtain a kind of PET/PTT/ Carbon Nanofibers/Epoxy Resin Composite Materials of the present invention.