CN104861433A

CN104861433A - Low-warping enhanced flame retardation composition based on PTT polyesters

Info

Publication number: CN104861433A
Application number: CN201410531371.2A
Authority: CN
Inventors: 不公告发明人
Original assignee: Qingdao Xinzhan Plastic Co Ltd
Current assignee: Qingdao Xinzhan Plastic Co Ltd
Priority date: 2014-10-11
Filing date: 2014-10-11
Publication date: 2015-08-26

Abstract

The invention discloses a low-warping enhanced flame retardation composition based on PTT polyesters. The composition comprises the following ingredients, by weight, 60%-80% of PTT polyesters, 8%-15% of glass fibers, 5%-10% of MBS, 5%-10% of flame retardants, 0.5%-2% of ultraviolet ray stabilizing agents, 0.1%-0.5% of composite anti-oxidants and 0.1%-1% of glass fiber exposition-resistant agents. The flame retardants are a mixture of polysulfonyldiphenylene phenyl phosphonate, polydimethylsiloxane and polytetrafluoroethylene with a weight ratio of 8:6:1. The ultraviolet ray stabilizing agents are benzotriazole ultraviolet ray absorbers or benzophenone ultraviolet ray absorbers. The beneficial effects are that the composition has good appearance and excellent mechanical properties , and is advantaged by low warping, high shock resistance, excellent flame retardation effects, low cost and easy popularization.

Description

Low warpage based on PTT polyester strengthens fire-retardant combination

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of low warpage based on PTT polyester strengthens fire-retardant combination.

Background technology

Poly(Trimethylene Terephthalate) (being called for short PTT polyester) 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 the defect that unmodified PTT polyester exists, and notched Izod impact strength is low, notch sensitivity large, poor fire, thermotolerance are bad, easily aging, this greatly limits PTT polyester and applies widely in every field.

Summary of the invention

A kind of low warpage based on PTT polyester is the object of the present invention is to provide to strengthen fire-retardant combination.

The technical solution adopted for the present invention to solve the technical problems is: the low warpage based on PTT polyester strengthens fire-retardant combination, and its component by mass percent proportioning is: PTT polyester 60% ~ 80%, glass fibre 8% ~ 15%, MBS 5% ~ 10%, fire retardant 5% ~ 10%, ultra-violet stabilizer 0.5% ~ 2%, composite antioxidant 0.1% ~ 0.5%, anti-glass emergence on the surface agent 0.1% ~ 1%.

Described PTT polyester is the polytrimethylene terephthalate of limiting viscosity 0.7 ~ 1.5dL/g.

Described glass fibre be surface through silane coupler modified process and mean length at 50 ~ 200 μm, the alkali free glass fibre of mean diameter 5 ~ 25 μm and length-to-diameter ratio 10 ~ 30.

Described MBS is the MBS segmented copolymer with nucleocapsid structure.

The compound of the polyphenylene phosphonic acids sulfobenzide ester of described fire retardant to be mass ratio be 8:6:1, polydimethylsiloxane and tetrafluoroethylene composition.

Described ultra-violet stabilizer is Benzotriazole Ultraviolet Stabilizer or benzophenone ultraviolet absorption agent.

Described composite antioxidant is the Hinered phenols antioxidant 1010 or 1076 of mass ratio 1:1 and the compound of phosphite ester kind antioxidant 168.

Described anti-glass emergence on the surface agent is modification ethylene bis-fatty acid amides.

The preparation method that the above-mentioned low warpage based on PTT polyester strengthens fire-retardant combination is: take each component by weight ratio, and by PTT polyester, MBS, fire retardant, ultra-violet stabilizer, composite antioxidant, anti-glass emergence on the surface agent adds in high-speed mixer and mixes 3 ~ 15 minutes, to be mixed evenly after, discharging adds 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 150 ~ 400r/min, processing temperature is 180 DEG C ~ 260 DEG C scopes, then extruding pelletization, obtain the present invention.

The invention has the beneficial effects as follows, the present invention has good outward appearance and excellent mechanical property, and low warpage, high impact resistance, and flame retardant effect is excellent, and cost is low, is easy to promote.

Embodiment

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

Embodiment 1:

A kind of low warpage based on PTT polyester strengthens fire-retardant combination, its component by mass percent proportioning is: PTT polyester 63%, glass fibre 15%, MBS 10%, fire retardant 10%, Benzotriazole Ultraviolet Stabilizer 1.5%, composite antioxidant 0.2%, modification ethylene bis-fatty acid amides 0.3%, described PTT polyester is the polytrimethylene terephthalate of limiting viscosity 0.7 ~ 1.5dL/g, described glass fibre is that surface is through silane coupler modified process, and mean length is at 50 ~ 200 μm, the alkali free glass fibre of mean diameter 5 ~ 25 μm and length-to-diameter ratio 10 ~ 30, described MBS is the MBS segmented copolymer with nucleocapsid structure, the polyphenylene phosphonic acids sulfobenzide ester of described fire retardant to be mass ratio be 8:6:1, the compound of polydimethylsiloxane and tetrafluoroethylene composition, described composite antioxidant is the Hinered phenols antioxidant 1010 of mass ratio 1:1 and the compound of phosphite ester kind antioxidant 168.

Preparation method: take each component by weight ratio, and by PTT polyester, MBS, fire retardant, Benzotriazole Ultraviolet Stabilizer, composite antioxidant, modification ethylene bis-fatty acid amides adds in high-speed mixer and mixes 3 ~ 15 minutes, to be mixed evenly after, discharging adds 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 150 ~ 400r/min, processing temperature is 180 DEG C ~ 260 DEG C scopes, then extruding pelletization, obtain the low warpage based on PTT polyester of the present invention and strengthen fire-retardant combination.

Embodiment 2:

A kind of low warpage based on PTT polyester strengthens fire-retardant combination, its component by mass percent proportioning is: PTT polyester 80%, glass fibre 8%, MBS 6%, fire retardant 5%, benzophenone ultraviolet absorption agent 0.5%, composite antioxidant 0.2%, modification ethylene bis-fatty acid amides 0.3%, described PTT polyester is the polytrimethylene terephthalate of limiting viscosity 0.7 ~ 1.5dL/g, described glass fibre is that surface is through silane coupler modified process, and mean length is at 50 ~ 200 μm, the alkali free glass fibre of mean diameter 5 ~ 25 μm and length-to-diameter ratio 10 ~ 30, described MBS is the MBS segmented copolymer with nucleocapsid structure, the polyphenylene phosphonic acids sulfobenzide ester of described fire retardant to be mass ratio be 8:6:1, the compound of polydimethylsiloxane and tetrafluoroethylene composition, described oxidation inhibitor is the Hinered phenols antioxidant 1076 of mass ratio 1:1 and the compound of phosphite ester kind antioxidant 168.

Preparation method: take each component by weight ratio, and by PTT polyester, MBS, fire retardant, benzophenone ultraviolet absorption agent, composite antioxidant, modification ethylene bis-fatty acid amides adds in high-speed mixer and mixes 3 ~ 15 minutes, to be mixed evenly after, discharging adds 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 150 ~ 400r/min, processing temperature is 180 DEG C ~ 260 DEG C scopes, then extruding pelletization, obtain the low warpage based on PTT polyester of the present invention and strengthen fire-retardant combination.

Claims

1. one kind strengthens fire-retardant combination based on the low warpage of PTT polyester, it is characterized in that, its component by mass percent proportioning is: PTT polyester 60% ~ 80%, glass fibre 8% ~ 15%, MBS 5% ~ 10%, fire retardant 5% ~ 10%, ultra-violet stabilizer 0.5% ~ 2%, composite antioxidant 0.1% ~ 0.5%, anti-glass emergence on the surface agent 0.1% ~ 1%.

2. the low warpage based on PTT polyester according to claim 1 strengthens fire-retardant combination, it is characterized in that, described glass fibre be surface through silane coupler modified process and mean length at 50 ~ 200 μm, the alkali free glass fibre of mean diameter 5 ~ 25 μm and length-to-diameter ratio 10 ~ 30.

3. the low warpage based on PTT polyester according to claim 1 strengthens fire-retardant combination, it is characterized in that, the compound of the polyphenylene phosphonic acids sulfobenzide ester of described fire retardant to be mass ratio be 8:6:1, polydimethylsiloxane and tetrafluoroethylene composition.

4. the low warpage based on PTT polyester according to claim 1 strengthens fire-retardant combination, and it is characterized in that, described ultra-violet stabilizer is Benzotriazole Ultraviolet Stabilizer or benzophenone ultraviolet absorption agent.

5. the low warpage based on PTT polyester according to claim 1 strengthens fire-retardant combination, and it is characterized in that, described composite antioxidant is the Hinered phenols antioxidant 1010 or 1076 of mass ratio 1:1 and the compound of phosphite ester kind antioxidant 168.

6. the low warpage based on PTT polyester according to claim 1 strengthens fire-retardant combination, and it is characterized in that, described anti-glass emergence on the surface agent is modification ethylene bis-fatty acid amides.

7. the low warpage based on PTT polyester according to claim 1 strengthens the preparation method of fire-retardant combination, it is characterized in that, comprise the following steps: take each component by weight ratio, and by PTT polyester, MBS, fire retardant, ultra-violet stabilizer, composite antioxidant, anti-glass emergence on the surface agent adds in high-speed mixer and mixes 3 ~ 15 minutes, to be mixed evenly after, discharging adds 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 150 ~ 400r/min, processing temperature is 180 DEG C ~ 260 DEG C scopes, then extruding pelletization, obtain the present invention.