CN104861459A - Filling material modified PTT polyester and preparation method therefor - Google Patents

Abstract

The invention discloses a filling material modified PTT polyester and a preparation method therefor. The filling material modified PTT polyester comprises the following ingredients, by weight, 75%-90% of PTT, 2%-5% of polyethylene glycol, 5%-20% of composite filling materials, 0.1%-0.5% of anti-oxidants, 0.1%-1% of lubricants and 0.1%-1% of potassium Perfluorobutanesulfonate. The composite filling materials are composite filling materials prepared from a mixture of heavy calcium carbonate, acicular wollastonite and precipitated barium sulphate with a weight ratio of 2:1:1 after activation processing of aluminum and titanium composite coupling agents. The beneficial effects are that the filling material modified PTT polyester has excellent mechanical properties and flame retardation performance, the heat resistance is good, the intensity is high, the chemical corrosion resistance is high, the size stability is good, the preparation technology is simple, the production cost is low, and industrial production and popularization are easy.

Description

A kind of filler modified PTT polyester and preparation method thereof

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of filler modified PTT polyester and preparation method thereof.

Background technology

Poly(Trimethylene Terephthalate) (PTT) is as a kind of new polyester macromolecular material of excellent combination property, the fields such as fiber, film, engineering plastics are widely used at present, but PTT is used alone exists the problem that its thermotolerance is bad, dimensional stability is low, intensity is not high, limit its application.

Summary of the invention

The object of the present invention is to provide that a kind of intensity is high, good heat resistance and the low filler modified PTT polyester of cost and preparation method thereof.

The technical solution adopted for the present invention to solve the technical problems is: a kind of filler modified PTT polyester, and its component by mass percent proportioning is: PTT 75% ~ 90%, polyoxyethylene glycol 2% ~ 5%, compounded mix 5% ~ 20%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%, perfluorobutyl potassium 0.1% ~ 1%.

Described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.5dL/g.

The compound of the water-ground limestone of described compounded mix to be mass ratio be 2:1:1, acicular wollastonite and process white is through the compounded mix of aluminium titanium composite coupler activation treatment, the particle diameter of described water-ground limestone is less than 5 μm, the footpath grain of described acicular wollastonite is between 5 ~ 20 μm, and the particle diameter of described process white is 0.5 ~ 1 μm.

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

Described lubricant is pentaerythritol stearate.

The preparation method of above-mentioned a kind of filler modified PTT polyester, comprises the following steps:

(1) drying about 6 ~ 8 hours at 110 DEG C ~ 120 DEG C temperature of forced air circulation baking oven, by PTT is placed in, stand-by;

(2), compounded mix is prepared: be that the water-ground limestone of 2:1:1, acicular wollastonite and process white add in high-speed mixer by mass ratio, separately add the aluminium titanium composite coupler accounting for water-ground limestone quality 0.5% ~ 1%, stir 20 ~ 40 minutes at 80 DEG C ~ 120 DEG C temperature, then be cooled to lower than 40 DEG C, discharging after drying, stand-by;

(3), taking dry PTT by weight ratio adds in high-speed mixer, add the polyoxyethylene glycol, oxidation inhibitor, lubricant and the perfluorobutyl potassium that take by weight ratio simultaneously, and add the obtained compounded mix of step (2) by weight ratio, make to stir 3 ~ 15 minutes together, discharging after fully mixing;

(4), the compound of step (3) is added in twin screw extruder, extrudes after melt blending at 210 DEG C ~ 260 DEG C, cooling granulation, then dry, obtain the filler modified PTT polyester of one of the present invention.

The invention has the beneficial effects as follows, the present invention has excellent mechanical property and flame retardant properties, and resistance toheat is good, and intensity is high, and chemical resistance is strong, good stability of the dimension, and preparation technology is simple, and production cost is low, is easy to suitability for industrialized production and popularization.

Embodiment

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

Embodiment 1:

A kind of filler modified PTT polyester, its component by mass percent proportioning is: PTT 76%, polyoxyethylene glycol 3%, compounded mix 20%, oxidation inhibitor 0.1%, pentaerythritol stearate 0.8%, perfluorobutyl potassium 0.1%, described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.5dL/g, the water-ground limestone of described compounded mix to be mass ratio be 2:1:1, the compound of acicular wollastonite and process white is through the compounded mix of aluminium titanium composite coupler activation treatment, the particle diameter of described water-ground limestone is less than 5 μm, the footpath grain of described acicular wollastonite is between 5 ~ 20 μm, the particle diameter of described process white is 0.5 ~ 1 μm, described oxidation inhibitor is the Hinered phenols antioxidant 1010 of mass ratio 1:1 and the compound of phosphite ester kind antioxidant 168.

Preparation method: (1), PTT is placed in the drying about 6 ~ 8 hours at 110 DEG C ~ 120 DEG C temperature of forced air circulation baking oven, stand-by; (2), compounded mix is prepared: be that the water-ground limestone of 2:1:1, acicular wollastonite and process white add in high-speed mixer by mass ratio, separately add the aluminium titanium composite coupler accounting for water-ground limestone quality 0.5% ~ 1%, stir 20 ~ 40 minutes at 80 DEG C ~ 120 DEG C temperature, then be cooled to lower than 40 DEG C, discharging after drying, stand-by; (3), taking dry PTT by weight ratio adds in high-speed mixer, add the polyoxyethylene glycol, oxidation inhibitor, pentaerythritol stearate and the perfluorobutyl potassium that take by weight ratio simultaneously, and add the obtained compounded mix of step (2) by weight ratio, make to stir 3 ~ 15 minutes together, discharging after fully mixing; (4), the compound of step (3) is added in twin screw extruder, extrudes after melt blending at 210 DEG C ~ 260 DEG C, cooling granulation, then dry, obtain the filler modified PTT polyester of one of the present invention.

Embodiment 2:

A kind of filler modified PTT polyester, its component by mass percent proportioning is: PTT 85%, polyoxyethylene glycol 4.5%, compounded mix 10%, oxidation inhibitor 0.1%, pentaerythritol stearate 0.3%, perfluorobutyl potassium 0.1%, described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.5dL/g, the water-ground limestone of described compounded mix to be mass ratio be 2:1:1, the compound of acicular wollastonite and process white is through the compounded mix of aluminium titanium composite coupler activation treatment, the particle diameter of described water-ground limestone is less than 5 μm, the footpath grain of described acicular wollastonite is between 5 ~ 20 μm, the particle diameter of described process white is 0.5 ~ 1 μm, described oxidation inhibitor is the Hinered phenols antioxidant 1010 of mass ratio 1:1 and the compound of phosphite ester kind antioxidant 168.

Preparation method is with embodiment 1.

Claims (5)

1. a filler modified PTT polyester, it is characterized in that, its component by mass percent proportioning is: PTT 75% ~ 90%, polyoxyethylene glycol 2% ~ 5%, compounded mix 5% ~ 20%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%, perfluorobutyl potassium 0.1% ~ 1%.

2. the filler modified PTT polyester of one according to claim 1, it is characterized in that, the compound of the water-ground limestone of described compounded mix to be mass ratio be 2:1:1, acicular wollastonite and process white is through the compounded mix of aluminium titanium composite coupler activation treatment, the particle diameter of described water-ground limestone is less than 5 μm, the footpath grain of described acicular wollastonite is between 5 ~ 20 μm, and the particle diameter of described process white is 0.5 ~ 1 μm.

3. the filler modified PTT polyester of one according to claim 1, is characterized in that, described oxidation inhibitor is the Hinered phenols antioxidant 1010 of mass ratio 1:1 and the compound of phosphite ester kind antioxidant 168.

4. the filler modified PTT polyester of one according to claim 1, is characterized in that, described lubricant is pentaerythritol stearate.

5. the preparation method of a kind of filler modified PTT polyester according to claim 1, is characterized in that, comprise the following steps:

(1) drying about 6 ~ 8 hours at 110 DEG C ~ 120 DEG C temperature of forced air circulation baking oven, by PTT is placed in, stand-by;

(2), compounded mix is prepared: be that the water-ground limestone of 2:1:1, acicular wollastonite and process white add in high-speed mixer by mass ratio, separately add the aluminium titanium composite coupler accounting for water-ground limestone quality 0.5% ~ 1%, stir 20 ~ 40 minutes at 80 DEG C ~ 120 DEG C temperature, then be cooled to lower than 40 DEG C, discharging after drying, stand-by;

(3), taking dry PTT by weight ratio adds in high-speed mixer, add the polyoxyethylene glycol, oxidation inhibitor, lubricant and the perfluorobutyl potassium that take by weight ratio simultaneously, and add the obtained compounded mix of step (2) by weight ratio, make to stir 3 ~ 15 minutes together, discharging after fully mixing;

(4), the compound of step (3) is added in twin screw extruder, extrudes after melt blending at 210 DEG C ~ 260 DEG C, cooling granulation, then dry, obtain the filler modified PTT polyester of one of the present invention.