CN104845160A - Halogen-free and flame-retardant PET/PTT material and preparation method thereof - Google Patents

Abstract

The invention discloses a halogen-free and flame-retardant PET/PTT material and a preparation method thereof. The halogen-free and flame-retardant PET/PTT material comprises the following components as weight %: 40-70% of PET, 15-30% of PTT, 2-5% of SMA, 5-8% of POE, 6-10% of halogen-free flame retardant, 2-4% of flame-retardant synergist, 0.1-0.5% of melt-proof drop, 0.1-1% of nucleating agent, 0.1-0.5% of antioxidant, and 0.1-1% of lubricant. The melt-proof drop is a compound of polytetrafluoroethylene and polyvinylidene fluoride in a mass ratio of 1:1. According to the invention, the original advantages of PET and PTT materials are realized, while the halogen-free and flame-retardant PET/PTT material is excellent in flame-retardant performance and impact resistance at the same time. Therefore, the halogen-free, low-smoke, melt-drip-proof and flame-retardant requirement up to the fire resistance rating of UL94V-0 level can be met.

Description

Halogen-free flameproof PET/PTT material and preparation method thereof

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of halogen-free flameproof PET/PTT material and preparation method thereof.

Background technology

PET/ PTT(polyethylene terephthalate/Poly(Trimethylene Terephthalate)) be a kind of novel plastic alloy material, there is the premium propertiess such as excellent forming process, shock resistance, high temperature heat-resistant are aging, chemical-resistant resistance, be thus widely used in fields such as automobile, electric, fibers.But PET/PTT exists the defect of poor fire, mechanical property instability, this will strongly limit its range of application.

Summary of the invention

Halogen-free flameproof PET/PTT material that the object of the present invention is to provide a kind of excellent fireproof performance and preparation method thereof.

The technical solution adopted for the present invention to solve the technical problems is: halogen-free flameproof PET/PTT material, and its component by mass percent proportioning is: PET 40% ~ 70%, PTT 15% ~ 30%, SMA 2% ~ 5%, POE 5% ~ 8%, halogen-free flame retardants 6% ~ 10%, fire retarding synergist 2% ~ 4%, anti-molten drop agent 0.1% ~ 0.5%, nucleator 0.1% ~ 1%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 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 SMA is styrene-grafted copolymer-maleic anhydride.

Described POE is elastomeric ethylene-octene copolymer.

Described halogen-free flame retardants is the phosphorus flame retardant polyphenylene phosphonic acids sulfobenzide ester of mass ratio 3:1 and the compound of silicon-series five-retardant polydimethylsiloxane.

Described fire retarding synergist is the one in antimonous oxide, antimony peroxide, sodium antimoniate.

Described anti-molten drop agent is the tetrafluoroethylene of mass ratio 1:1 and the compound of polyvinylidene difluoride (PVDF).

Described nucleator is the nano silicon of mass ratio 4:1 and the compound of 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 lubricant is pentaerythritol stearate.

The preparation method of above-mentioned halogen-free flameproof PET/PTT material, 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), taking dry PTT by weight ratio adds in super mixer, add halogen-free flame retardants, fire retarding synergist, anti-molten drop agent, oxidation inhibitor, lubricant by weight ratio simultaneously, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging add twin screw extruder melt extrude pelletizing and dry after stand-by;

(3), taking dry PET by weight ratio adds in super mixer, add the product that step (2) obtains again, and add SMA, POE, nucleator by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds in twin screw extruder, extrude through melting mixing at 210 DEG C ~ 280 DEG C temperature, cooling granulation, drying, obtain halogen-free flameproof PET/PTT material of the present invention.

The invention has the beneficial effects as follows, the present invention have PET, PTT separately former advantageous while, also there is excellent flame retardant properties and shock resistance, meet the flame-retardancy requirements of Halogen, low cigarette, resistance to molten drop and UL94 V-0 level, make the effect and the Application Areas that greatly improve PET/PTT.

Embodiment

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

Embodiment 1:

A kind of halogen-free flameproof PET/PTT material, its component by mass percent proportioning is: PET 40%, PTT 30%, SMA 5%, POE 8%, halogen-free flame retardants 10%, antimonous oxide 4%, anti-molten drop agent 0.5%, nucleator 1%, antioxidant 1010 0.5%, pentaerythritol stearate 1%, described halogen-free flame retardants is the phosphorus flame retardant polyphenylene phosphonic acids sulfobenzide ester of mass ratio 3:1 and the compound of silicon-series five-retardant polydimethylsiloxane, described anti-molten drop agent is the tetrafluoroethylene of mass ratio 1:1 and the compound of polyvinylidene difluoride (PVDF), described nucleator is the nano silicon of mass ratio 4:1 and the compound of Sodium Benzoate.

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), taking dry PTT by weight ratio adds in super mixer, add halogen-free flame retardants, antimonous oxide, anti-molten drop agent, antioxidant 1010, pentaerythritol stearate by weight ratio simultaneously, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging add twin screw extruder melt extrude pelletizing and dry after stand-by; (3), taking dry PET by weight ratio adds in super mixer, add the product that step (2) obtains again, and add SMA, POE, nucleator by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds in twin screw extruder, extrude through melting mixing at 210 DEG C ~ 280 DEG C temperature, cooling granulation, drying, obtain halogen-free flameproof PET/PTT material of the present invention.

Embodiment 2:

A kind of halogen-free flameproof PET/PTT material, its component by mass percent proportioning is: PET 63%, PTT 20%, SMA 3%, POE 5%, halogen-free flame retardants 6%, antimony peroxide 2%, anti-molten drop agent 0.2%, nucleator 0.2%, the compound 0.2% of antioxidant 1076 and irgasfos 168, pentaerythritol stearate 0.4%, described halogen-free flame retardants is the phosphorus flame retardant polyphenylene phosphonic acids sulfobenzide ester of mass ratio 3:1 and the compound of silicon-series five-retardant polydimethylsiloxane, described anti-molten drop agent is the tetrafluoroethylene of mass ratio 1:1 and the compound of polyvinylidene difluoride (PVDF), described nucleator is the nano silicon of mass ratio 4:1 and the compound of Sodium Benzoate.

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), taking dry PTT by weight ratio adds in super mixer, add compound, the pentaerythritol stearate of halogen-free flame retardants, antimony peroxide, anti-molten drop agent, antioxidant 1076 and irgasfos 168 by weight ratio simultaneously, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging add twin screw extruder melt extrude pelletizing and dry after stand-by; (3), taking dry PET by weight ratio adds in super mixer, add the product that step (2) obtains again, and add SMA, POE, nucleator by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds in twin screw extruder, extrude through melting mixing at 210 DEG C ~ 280 DEG C temperature, cooling granulation, drying, obtain halogen-free flameproof PET/PTT material of the present invention.

Claims (8)

1. a halogen-free flameproof PET/PTT material, it is characterized in that, its component by mass percent proportioning is: PET 40% ~ 70%, PTT 15% ~ 30%, SMA 2% ~ 5%, POE 5% ~ 8%, halogen-free flame retardants 6% ~ 10%, fire retarding synergist 2% ~ 4%, anti-molten drop agent 0.1% ~ 0.5%, nucleator 0.1% ~ 1%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%.

2. halogen-free flameproof PET/PTT material according to claim 1, is characterized in that, described halogen-free flame retardants is the phosphorus flame retardant polyphenylene phosphonic acids sulfobenzide ester of mass ratio 3:1 and the compound of silicon-series five-retardant polydimethylsiloxane.

3. halogen-free flameproof PET/PTT material according to claim 1, is characterized in that, described fire retarding synergist is the one in antimonous oxide, antimony peroxide, sodium antimoniate.

4. halogen-free flameproof PET/PTT material according to claim 1, is characterized in that, described anti-molten drop agent is the tetrafluoroethylene of mass ratio 1:1 and the compound of polyvinylidene difluoride (PVDF).

5. halogen-free flameproof PET/PTT material according to claim 1, is characterized in that, described nucleator is the nano silicon of mass ratio 4:1 and the compound of Sodium Benzoate.

6. halogen-free flameproof PET/PTT material 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.

7. halogen-free flameproof PET/PTT material according to claim 1, is characterized in that, described lubricant is pentaerythritol stearate.

8. the preparation method of halogen-free flameproof PET/PTT material 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), taking dry PTT by weight ratio adds in super mixer, add halogen-free flame retardants, fire retarding synergist, anti-molten drop agent, oxidation inhibitor, lubricant by weight ratio simultaneously, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging add twin screw extruder melt extrude pelletizing and dry after stand-by;

(3), taking dry PET by weight ratio adds in super mixer, add the product that step (2) obtains again, and add SMA, POE, nucleator by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds in twin screw extruder, extrude through melting mixing at 210 DEG C ~ 280 DEG C temperature, cooling granulation, drying, obtain halogen-free flameproof PET/PTT material of the present invention.