CN104861469A - High-performance composite material based on PTT polyesters - Google Patents

Abstract

The invention discloses a high-performance composite material based on PTT polyesters. The high-performance composite material comprises the following ingredients, by weight, 70%-85% of PTT, 5%-10% of glass fibers, 3%-8% of polysulfonyldiphenylene phenyl phosphonate, 2%-6% of ethane-octylene copolymer, 2%-4% of polyethylene glycol, 0.5%-3% of talcum powder, 0.1%-0.5% of potassium dibenzyl sulfonyl sulfonate, 0.1%-0.5% of anti-oxidants and 0.1%-1% of lubricants. The talcum powder is powder with surfaces through activation processing of aluminum titanium composite coupling agents and with a particle size of being no more than 5 micrometers. The beneficial effects are that Through enhancement of the glass fibers, cooperation flame retardation modification of polysulfonyldiphenylene phenyl phosphonate and potassium dibenzyl sulfonyl sulfonate and toughening of ethylene-octene copolymers, the product has advantages of excellent flame retardation, high intensity, high impact resistance, high chemical resistance and the like, the dimension stability is good, the warping degree is low, the processing fluidity is good and the electrical performance is excellent.

Description

Based on the high performance composite of PTT polyester

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of high performance composite based on PTT polyester.

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 there is poor fire, intensity is low, toughness is not enough defect in unmodified PTT, this will limit its range of application greatly.

Summary of the invention

The object of the present invention is to provide the high performance composite based on PTT polyester that a kind of good combination property, cost are low.

The technical solution adopted for the present invention to solve the technical problems is: based on the high performance composite of PTT polyester, and its component by mass percent proportioning is: PTT 70% ~ 85%, glass fibre 5% ~ 10%, polyphenylene phosphonic acids sulfobenzide ester 3% ~ 8%, ethylene-octene copolymer 2% ~ 6%, polyoxyethylene glycol 2% ~ 4%, talcum powder 0.5% ~ 3%, phenylbenzene sulfuryl potassium sulfonate 0.1% ~ 0.5%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%.

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

Described glass fibre is the alkali-free short glass fiber of surface through silane coupling agent process.

To be surface to cross and particle diameter is not more than the powder of 5 μm through aluminium titanium composite coupler activation treatment described talcum powder.

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

Described lubricant is the one in pentaerythritol stearate, silicone powder, modification ethylene bis stearamide.

The preparation method of the above-mentioned high performance composite based on PTT polyester, comprises the following steps:

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

(2), taking dry PTT by weight ratio adds in high-speed mixer, add the polyphenylene phosphonic acids sulfobenzide ester, ethylene-octene copolymer, polyoxyethylene glycol, talcum powder, phenylbenzene sulfuryl potassium sulfonate, oxidation inhibitor and the lubricant that take by weight ratio simultaneously, make to stir 5 ~ 15 minutes together, discharging after fully mixing;

(3), the compound of step (2) is added the main spout of twin screw extruder, add from the side spout of twin screw extruder the glass fibre taken by weight ratio simultaneously, by twin screw extruder melting mixing 1 ~ 2 minute, screw speed controls at 120 ~ 200r/min, processing temperature is 180 DEG C ~ 260 DEG C scopes, then extrude, cooling granulation, drying, obtain the present invention.

The invention has the beneficial effects as follows, the present invention is toughness reinforcing by fiberglass reinforced, polyphenylene phosphonic acids sulfobenzide ester and the cooperative flame retardant modification of phenylbenzene sulfuryl potassium sulfonate and ethylene-octene copolymer, make products therefrom have the advantage such as excellent flame retardancy and high strength, high impact properties, high chemical resistance, and its good stability of the dimension, warpage properties is low, processing fluidity good, electrical property is excellent.

Embodiment

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

Embodiment 1:

A kind of high performance composite based on PTT polyester, its component by mass percent proportioning is: PTT 72%, glass fibre 10%, polyphenylene phosphonic acids sulfobenzide ester 8%, ethylene-octene copolymer 4%, polyoxyethylene glycol 3%, talcum powder 2%, phenylbenzene sulfuryl potassium sulfonate 0.1%, antioxidant 1010 0.3%, pentaerythritol stearate 0.6%, wherein, described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.2dL/g, described glass fibre is the alkali-free short glass fiber of surface through silane coupling agent process, described talcum powder is that surface is through aluminium titanium composite coupler activation treatment mistake, and particle diameter is not more than the powder of 5 μm.

Preparation method: (1), PTT is placed in forced air circulation baking oven, at 110 DEG C ~ 120 DEG C temperature, drying about 6 ~ 8 hours, stand-by; (2), taking dry PTT by weight ratio adds in high-speed mixer, add the polyphenylene phosphonic acids sulfobenzide ester, ethylene-octene copolymer, polyoxyethylene glycol, talcum powder, phenylbenzene sulfuryl potassium sulfonate, antioxidant 1010 and the pentaerythritol stearate that take by weight ratio simultaneously, make to stir 5 ~ 15 minutes together, discharging after fully mixing; (3), the compound of step (2) is added the main spout of twin screw extruder, add from the side spout of twin screw extruder the glass fibre taken by weight ratio simultaneously, by twin screw extruder melting mixing 1 ~ 2 minute, screw speed controls at 120 ~ 200r/min, processing temperature is 180 DEG C ~ 260 DEG C scopes, then extrude, cooling granulation, drying, obtain the present invention.

Embodiment 2:

A kind of high performance composite based on PTT polyester, its component by mass percent proportioning is: PTT 80%, glass fibre 8%, polyphenylene phosphonic acids sulfobenzide ester 5%, ethylene-octene copolymer 3%, polyoxyethylene glycol 2%, talcum powder 1%, phenylbenzene sulfuryl potassium sulfonate 0.1%, the compound 0.1% of antioxidant 1010 and phosphite ester kind antioxidant 168, silicone powder 0.8%, wherein, described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.2dL/g, described glass fibre is the alkali-free short glass fiber of surface through silane coupling agent process, described talcum powder is that surface is through aluminium titanium composite coupler activation treatment mistake, and particle diameter is not more than the powder of 5 μm.

Preparation method: (1), PTT is placed in forced air circulation baking oven, at 110 DEG C ~ 120 DEG C temperature, drying about 6 ~ 8 hours, stand-by; (2), taking dry PTT by weight ratio adds in high-speed mixer, add compound, the silicone powder of polyphenylene phosphonic acids sulfobenzide ester, ethylene-octene copolymer, polyoxyethylene glycol, talcum powder, phenylbenzene sulfuryl potassium sulfonate, antioxidant 1010 and the phosphite ester kind antioxidant 168 taken by weight ratio simultaneously, make to stir 5 ~ 15 minutes together, discharging after fully mixing; (3), the compound of step (2) is added the main spout of twin screw extruder, add from the side spout of twin screw extruder the glass fibre taken by weight ratio simultaneously, by twin screw extruder melting mixing 1 ~ 2 minute, screw speed controls at 120 ~ 200r/min, processing temperature is 180 DEG C ~ 260 DEG C scopes, then extrude, cooling granulation, drying, obtain the present invention.

Claims (6)

1. the high performance composite based on PTT polyester, it is characterized in that, its component by mass percent proportioning is: PTT 70% ~ 85%, glass fibre 5% ~ 10%, polyphenylene phosphonic acids sulfobenzide ester 3% ~ 8%, ethylene-octene copolymer 2% ~ 6%, polyoxyethylene glycol 2% ~ 4%, talcum powder 0.5% ~ 3%, phenylbenzene sulfuryl potassium sulfonate 0.1% ~ 0.5%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%.

2. the high performance composite based on PTT polyester according to claim 1, is characterized in that, described glass fibre is the alkali-free short glass fiber of surface through silane coupling agent process.

3. the high performance composite based on PTT polyester according to claim 1, is characterized in that, to be surface to cross and particle diameter is not more than the powder of 5 μm through aluminium titanium composite coupler activation treatment described talcum powder.

4. the high performance composite based on PTT polyester 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 phosphite ester kind antioxidant 168.

5. the high performance composite based on PTT polyester according to claim 1, is characterized in that, described lubricant is the one in pentaerythritol stearate, silicone powder, modification ethylene bis stearamide.

6. the preparation method of the high performance composite based on PTT polyester according to claim 1, is characterized in that, comprise the following steps:

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

(2), taking dry PTT by weight ratio adds in high-speed mixer, add the polyphenylene phosphonic acids sulfobenzide ester, ethylene-octene copolymer, polyoxyethylene glycol, talcum powder, phenylbenzene sulfuryl potassium sulfonate, oxidation inhibitor and the lubricant that take by weight ratio simultaneously, make to stir 5 ~ 15 minutes together, discharging after fully mixing;

(3), the compound of step (2) is added the main spout of twin screw extruder, add from the side spout of twin screw extruder the glass fibre taken by weight ratio simultaneously, by twin screw extruder melting mixing 1 ~ 2 minute, screw speed controls at 120 ~ 200r/min, processing temperature is 180 DEG C ~ 260 DEG C scopes, then extrude, cooling granulation, drying, obtain the present invention.