CN104845192A - Flame-retardant, reinforced, weather-proof and modified PET/PTT alloy and preparation method thereof - Google Patents

Abstract

The present invention discloses a flame-retardant, reinforced, weather-proof and modified PET/PTT alloy and a preparation method thereof. The flame-retardant, reinforced, weather-proof and modified PET/PTT alloy comprises the following components in mass percentage: 32% to 57% of PET, 20% to 30% of PTT, 2% to 4% of SMA, 6% to 10% of composite flame retardant, 8% to 12% of glass fibers, 5% to 8% of toughening agent, 0.5% to 2% of light stabilizer, 0.5% to 1% of composite nucleating agent, 0.1% to 0.5% of antioxidant, and 0.1% to 1% of lubricant. According to the invention, the flame-retardant, reinforced, weather-proof and modified PET/PTT alloy integrates the original advantages of PET and PTT. Meanwhile, the mechanical property, the weather-proof property and the anti-aging performance of the flame-retardant, reinforced, weather-proof and modified PET/PTT alloy are obviously improved. Moreover, the flame-retardant, reinforced, weather-proof and modified PET/PTT alloy is high in glowing temperature, small in warping deformation, high in notch impact strength, good in fire resistance, low in cost and simple in preparation process.

Description

The PET/PTT Alloy And Preparation Method of the weather-proof modification of a kind of fire-retardant enhancing

Technical field

The present invention relates to technical field of polymer materials, the PET/PTT Alloy And Preparation Method of the specifically weather-proof modification of a kind of fire-retardant enhancing.

Background technology

PET(polyethylene terephthalate)/PTT(Poly(Trimethylene Terephthalate)) be a kind of novel polyblend, it has the premium propertiess such as excellent forming process, shock resistance, high temperature heat-resistant are aging, chemical-resistant resistance, thus has a good application prospect in automobile, electric, the field such as household electrical appliances, fiber.But there is poor fire, mechanical strength is unstable, durability is bad problem in the PET/PTT of non-modified, this will greatly limit its effect and Application Areas.In order to improve performance, often needing to add three components again in PET/PTT, being intended to the effect and the Application Areas that promote PET/PTT alloy.

Summary of the invention

The object of the present invention is to provide the PET/PTT Alloy And Preparation Method of the weather-proof modification of a kind of fire-retardant enhancing.

The technical solution adopted for the present invention to solve the technical problems is: the PET/PTT alloy of the weather-proof modification of a kind of fire-retardant enhancing, and its component by mass percent proportioning is: PET 32% ~ 57%, PTT 20% ~ 30%, SMA 2% ~ 4%, composite flame-retardant agent 6% ~ 10%, glass fibre 8% ~ 12%, toughner 5% ~ 8%, photostabilizer 0.5% ~ 2%, composite nucleating agent 0.5% ~ 1%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%.

The polyethylene terephthalate of described PET to be intrinsic viscosity be 0.8 ~ 1.1dL/g.

Described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 0.9dL/g.

Described SMA is styrene-grafted copolymer-maleic anhydride.

Described composite flame-retardant agent is the compound of the polyphenylene phosphonic acids sulfobenzide ester of mass ratio 6:3:1, polydimethylsiloxane and tetrafluoroethylene.

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

Described toughner is at least one in ethylene-methyl acrylate multipolymer, ethylene-butyl acrylate copolymer, ethylene-acrylate-glycidyl acrylate multipolymer, Maleic Anhydride Grafted Ethylene Butyl Acrylate Copolymer.

Described photostabilizer is ESCALOL 567 or Octabenzone.

Described composite nucleating agent 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 or modification ethylene bis-fatty acid amides.

The preparation method of the PET/PTT alloy of the above-mentioned weather-proof modification of a kind of fire-retardant enhancing, 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, composite flame-retardant agent at 80 DEG C ~ 85 DEG C temperature dry 30 ~ 45 minutes, stand-by;

(2) PTT and the composite flame-retardant agent that, take drying by weight ratio add in super mixer, and add toughner, photostabilizer, oxidation inhibitor, lubricant by weight ratio, 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 and composite nucleating agent by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds the main spout of twin screw extruder, add described glass fibre by weight ratio from the side spout of twin screw extruder simultaneously, by twin screw extruder melting mixing 1 ~ 2 minute, screw speed controls at 150 ~ 500r/min, processing temperature is 210 DEG C ~ 280 DEG C scopes, then extrude, cooling granulation, dry, obtain the PET/PTT alloy of the weather-proof modification of a kind of fire-retardant enhancing of the present invention.

The invention has the beneficial effects as follows, the present invention have PET, PTT separately former advantageous while, also significantly enhance mechanical property and weather-proof ageing resistance, and burning temperature is high, buckling deformation is little, and notched Izod impact strength is high, good flame resistance, cost is low, and preparation technology is simple.

Embodiment

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

Embodiment 1:

The PET/PTT alloy of the weather-proof modification of a kind of fire-retardant enhancing, its component by mass percent proportioning is: PET 57%, PTT 20%, SMA 2%, composite flame-retardant agent 6%, glass fibre 8%, ethylene-methyl acrylate multipolymer 5%, ESCALOL 567 1%, composite nucleating agent 0.5%, antioxidant 1010 0.1%, pentaerythritol stearate 0.4%, the polyethylene terephthalate of described PET to be intrinsic viscosity be 0.8 ~ 1.1dL/g, described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 0.9dL/g, described composite flame-retardant agent is the polyphenylene phosphonic acids sulfobenzide ester of mass ratio 6:3:1, the compound of polydimethylsiloxane and tetrafluoroethylene, described glass fibre is the alkali-free short glass fiber of surface through silane coupling agent process, described composite nucleating agent 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, composite flame-retardant agent at 80 DEG C ~ 85 DEG C temperature dry 30 ~ 45 minutes, stand-by, (2) PTT and the composite flame-retardant agent that, take drying by weight ratio add in super mixer, and add ethylene-methyl acrylate multipolymer, ESCALOL 567, antioxidant 1010, pentaerythritol stearate by weight ratio, 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 and composite nucleating agent by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds the main spout of twin screw extruder, add described glass fibre by weight ratio from the side spout of twin screw extruder simultaneously, by twin screw extruder melting mixing 1 ~ 2 minute, screw speed controls at 150 ~ 500r/min, processing temperature is 210 DEG C ~ 280 DEG C scopes, then extrude, cooling granulation, dry, obtain the PET/PTT alloy of the weather-proof modification of a kind of fire-retardant enhancing of the present invention.

Embodiment 2:

The PET/PTT alloy of the weather-proof modification of a kind of fire-retardant enhancing, its component by mass percent proportioning is: PET 32%, PTT 30%, SMA 4%, composite flame-retardant agent 10%, glass fibre 12%, ethylene-butyl acrylate copolymer 8%, Octabenzone 2%, composite nucleating agent 1%, the compound 0.5% of antioxidant 1076 and irgasfos 168, modification ethylene bis-fatty acid amides 0.5%, the polyethylene terephthalate of described PET to be intrinsic viscosity be 0.8 ~ 1.1dL/g, described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 0.9dL/g, described composite flame-retardant agent is the polyphenylene phosphonic acids sulfobenzide ester of mass ratio 6:3:1, the compound of polydimethylsiloxane and tetrafluoroethylene, described glass fibre is the alkali-free short glass fiber of surface through silane coupling agent process, described composite nucleating agent 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, composite flame-retardant agent at 80 DEG C ~ 85 DEG C temperature dry 30 ~ 45 minutes, stand-by, (2) PTT and the composite flame-retardant agent that, take drying by weight ratio add in super mixer, and add compound, the modification ethylene bis-fatty acid amides of ethylene-butyl acrylate copolymer, Octabenzone, antioxidant 1076 and irgasfos 168 by weight ratio, 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 and composite nucleating agent by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds the main spout of twin screw extruder, add described glass fibre by weight ratio from the side spout of twin screw extruder simultaneously, by twin screw extruder melting mixing 1 ~ 2 minute, screw speed controls at 150 ~ 500r/min, processing temperature is 210 DEG C ~ 280 DEG C scopes, then extrude, cooling granulation, dry, obtain the PET/PTT alloy of the weather-proof modification of a kind of fire-retardant enhancing of the present invention.

Claims (7)

1. the PET/PTT alloy of the weather-proof modification of fire-retardant enhancing, it is characterized in that, its component by mass percent proportioning is: PET 32% ~ 57%, PTT 20% ~ 30%, SMA 2% ~ 4%, composite flame-retardant agent 6% ~ 10%, glass fibre 8% ~ 12%, toughner 5% ~ 8%, photostabilizer 0.5% ~ 2%, composite nucleating agent 0.5% ~ 1%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%.

2. the PET/PTT alloy of the weather-proof modification of a kind of fire-retardant enhancing according to claim 1, is characterized in that, described composite flame-retardant agent is the compound of the polyphenylene phosphonic acids sulfobenzide ester of mass ratio 6:3:1, polydimethylsiloxane and tetrafluoroethylene.

3. the PET/PTT alloy of the weather-proof modification of a kind of fire-retardant enhancing 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.

4. the PET/PTT alloy of the weather-proof modification of a kind of fire-retardant enhancing according to claim 1, it is characterized in that, described toughner is at least one in ethylene-methyl acrylate multipolymer, ethylene-butyl acrylate copolymer, ethylene-acrylate-glycidyl acrylate multipolymer, Maleic Anhydride Grafted Ethylene Butyl Acrylate Copolymer.

5. the PET/PTT alloy of the weather-proof modification of a kind of fire-retardant enhancing according to claim 1, is characterized in that, described photostabilizer is ESCALOL 567 or Octabenzone.

6. the PET/PTT alloy of the weather-proof modification of a kind of fire-retardant enhancing according to claim 1, is characterized in that, described composite nucleating agent is the nano silicon of mass ratio 4:1 and the compound of Sodium Benzoate.

7. the preparation method of the PET/PTT alloy of the weather-proof modification of a kind of fire-retardant enhancing 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, composite flame-retardant agent at 80 DEG C ~ 85 DEG C temperature dry 30 ~ 45 minutes, stand-by;

(2) PTT and the composite flame-retardant agent that, take drying by weight ratio add in super mixer, and add toughner, photostabilizer, oxidation inhibitor, lubricant by weight ratio, 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 and composite nucleating agent by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds the main spout of twin screw extruder, add described glass fibre by weight ratio from the side spout of twin screw extruder simultaneously, by twin screw extruder melting mixing 1 ~ 2 minute, screw speed controls at 150 ~ 500r/min, processing temperature is 210 DEG C ~ 280 DEG C scopes, then extrude, cooling granulation, dry, obtain the PET/PTT alloy of the weather-proof modification of a kind of fire-retardant enhancing of the present invention.