CN104861580A - Flame retardation modified PTT polyester and preparation method therefor - Google Patents

Abstract

The invention discloses a flame retardation modified PTT polyester and a preparation method therefor. The flame retardation modified PTT polyester comprises the following ingredients, by weight, 70%-90% of PTT, 5%-15% of flame retardant, 0.1%-1% of anti-dropping agents, 3%-8% of nano calcium carbonate, 0.1%-0.5% of coupling agents, 2%-4% of polyethylene glycol, 0.1%-0.5% of anti-oxidants and 0.1%-1% of lubricants. The flame retardant is one selected from decabromodiphenylethane, bisphenol-A bis (diphenyl phosphate) and polysulfonyldiphenylene phenyl phosphonate. The beneficial effects are that the flame retardation modified PTT polyester has advantages of good flame retardation performance, high intensity, good heat resistance, stable dimension, good processing property and the like, therefore the application effects of the PTT polyester are raised greatly and application fields of the PTT polyester are widened greatly.

Description

A kind of flame-retardant modified PTT polyester and preparation method thereof

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of flame-retardant 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, especially in engineering plastics, PTT has the high-performance of polyethylene terephthalate (PET) and the workability of polybutylene terephthalate (PBT) simultaneously, and its price is much lower compared with PBT, thus there is good practical value.But unmodified PTT is the same with other engineering plastics, still there is poor fire, deficiency that intensity is low, this will strongly limit the range of application of PTT.

Summary of the invention

The object of the present invention is to provide flame-retardant modified PTT polyester that a kind of flame retardant properties is good, intensity is high and cost is low and preparation method thereof.

The technical solution adopted for the present invention to solve the technical problems is: a kind of flame-retardant modified PTT polyester, and its component by mass percent proportioning is: PTT 70% ~ 90%, fire retardant 5% ~ 15%, anti-dripping agent 0.1% ~ 1%, nano-calcium carbonate 3% ~ 8%, coupling agent 0.1% ~ 0.5%, polyoxyethylene glycol 2% ~ 4%, 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 fire retardant is the one in TDE, dihydroxyphenyl propane-bis-(diphenyl phosphoester), polyphenylene phosphonic acids sulfobenzide ester.

Described anti-dripping agent is the compound of tetrafluoroethylene and polyvinylidene difluoride (PVDF) 2:1 in mass ratio.

Described coupling agent is titanate coupling agents.

Described oxidation inhibitor is the one in the compound of antioxidant 1010, antioxidant 1076, antioxidant 1010 or antioxidant 1076 and irgasfos 168 1:1 in mass ratio.

Described lubricant is pentaerythritol stearate.

The preparation method of above-mentioned a kind of flame-retardant 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, by fire retardant and nano-calcium carbonate respectively at 60 DEG C ~ 85 DEG C temperature dry 30 ~ 45 minutes separately, stand-by;

(2) take dry nano-calcium carbonate and coupling agent, by weight ratio, add a material temperature degree in the high-speed mixer of 80 DEG C ~ 120 DEG C, after rotating speed 3000 ~ 4500 revs/min stirs 10 ~ 45 minutes, be cooled to lower than 40 DEG C of dischargings stand-by;

(3), the PTT and fire retardant that take drying are by weight ratio added in high-speed mixer, add the product of step (2) simultaneously, stir 1 ~ 3 minute, then the anti-dripping agent, polyoxyethylene glycol, oxidation inhibitor and the lubricant that take by weight ratio is added, make to stir 3 ~ 15 minutes together, evenly rear discharging to be mixed;

(4), the compound of step (3) is added in twin screw extruder, extrudes through melting mixing at 180 DEG C ~ 260 DEG C temperature, cooling granulation, drying, obtain the flame-retardant modified PTT polyester of one of the present invention.

The invention has the beneficial effects as follows, the present invention has that flame retardant properties is good, intensity is high, the advantage such as good heat resistance, dimensional stabilizing and good processing characteristics, and then substantially increases effect and the Application Areas of PTT polyester.

Embodiment

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

Embodiment 1:

A kind of flame-retardant modified PTT polyester, its component by mass percent proportioning is: PTT 71%, TDE 15%, anti-dripping agent 0.5%, nano-calcium carbonate 8%, titanate coupling agents 0.5%, polyoxyethylene glycol 4%, antioxidant 1010 0.2%, pentaerythritol stearate 0.8%, wherein, described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.2dL/g, and described anti-dripping agent is the compound of tetrafluoroethylene and polyvinylidene difluoride (PVDF) 2:1 in mass ratio.

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, by TDE and nano-calcium carbonate respectively at 60 DEG C ~ 85 DEG C temperature dry 30 ~ 45 minutes separately, stand-by; (2) take dry nano-calcium carbonate and titanate coupling agents, by weight ratio, add a material temperature degree in the high-speed mixer of 80 DEG C ~ 120 DEG C, after rotating speed 3000 ~ 4500 revs/min stirs 10 ~ 45 minutes, be cooled to lower than 40 DEG C of dischargings stand-by; (3), the PTT and fire retardant that take drying are by weight ratio added in high-speed mixer, add the product of step (2) simultaneously, stir 1 ~ 3 minute, then the anti-dripping agent, polyoxyethylene glycol, antioxidant 1010 and the pentaerythritol stearate that take by weight ratio is added, make to stir 3 ~ 15 minutes together, evenly rear discharging to be mixed; (4), the compound of step (3) is added in twin screw extruder, extrudes through melting mixing at 180 DEG C ~ 260 DEG C temperature, cooling granulation, drying, obtain the flame-retardant modified PTT polyester of one of the present invention.

Embodiment 2:

A kind of flame-retardant modified PTT polyester, its component by mass percent proportioning is: compound 0.2%, the pentaerythritol stearate 0.6% of PTT 81%, polyphenylene phosphonic acids sulfobenzide ester 10%, anti-dripping agent 0.5%, nano-calcium carbonate 5%, titanate coupling agents 0.2%, polyoxyethylene glycol 2.5%, antioxidant 1010 and irgasfos 168 1:1 in mass ratio, wherein, described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.2dL/g, and described anti-dripping agent is the compound of tetrafluoroethylene and polyvinylidene difluoride (PVDF) 2:1 in mass ratio.

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, by polyphenylene phosphonic acids sulfobenzide ester and nano-calcium carbonate respectively at 60 DEG C ~ 85 DEG C temperature dry 30 ~ 45 minutes separately, stand-by; (2) take dry nano-calcium carbonate and titanate coupling agents, by weight ratio, add a material temperature degree in the high-speed mixer of 80 DEG C ~ 120 DEG C, after rotating speed 3000 ~ 4500 revs/min stirs 10 ~ 45 minutes, be cooled to lower than 40 DEG C of dischargings stand-by; (3), the PTT and fire retardant that take drying are by weight ratio added in high-speed mixer, add the product of step (2) simultaneously, stir 1 ~ 3 minute, then the anti-dripping agent, polyoxyethylene glycol, antioxidant 1010 and the irgasfos 168 that take the by weight ratio compound of 1:1 and pentaerythritol stearate is in mass ratio added, make to stir 3 ~ 15 minutes together, evenly rear discharging to be mixed; (4), the compound of step (3) is added in twin screw extruder, extrudes through melting mixing at 180 DEG C ~ 260 DEG C temperature, cooling granulation, drying, obtain the flame-retardant modified PTT polyester of one of the present invention.

Claims (7)

1. a flame-retardant modified PTT polyester, it is characterized in that, its component by mass percent proportioning is: PTT 70% ~ 90%, fire retardant 5% ~ 15%, anti-dripping agent 0.1% ~ 1%, nano-calcium carbonate 3% ~ 8%, coupling agent 0.1% ~ 0.5%, polyoxyethylene glycol 2% ~ 4%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%.

2. the flame-retardant modified PTT polyester of one according to claim 1, is characterized in that, described fire retardant is the one in TDE, dihydroxyphenyl propane-bis-(diphenyl phosphoester), polyphenylene phosphonic acids sulfobenzide ester.

3. the flame-retardant modified PTT polyester of one according to claim 1, is characterized in that, described anti-dripping agent is the compound of tetrafluoroethylene and polyvinylidene difluoride (PVDF) 2:1 in mass ratio.

4. the flame-retardant modified PTT polyester of one according to claim 1, is characterized in that, described coupling agent is titanate coupling agents.

5. the flame-retardant modified PTT polyester of one 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 1:1 in mass ratio.

6. the flame-retardant modified PTT polyester of one according to claim 1, is characterized in that, described lubricant is pentaerythritol stearate.

7. the preparation method of a kind of flame-retardant 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, by fire retardant and nano-calcium carbonate respectively at 60 DEG C ~ 85 DEG C temperature dry 30 ~ 45 minutes separately, stand-by;

(2) take dry nano-calcium carbonate and coupling agent, by weight ratio, add a material temperature degree in the high-speed mixer of 80 DEG C ~ 120 DEG C, after rotating speed 3000 ~ 4500 revs/min stirs 10 ~ 45 minutes, be cooled to lower than 40 DEG C of dischargings stand-by;

(3), the PTT and fire retardant that take drying are by weight ratio added in high-speed mixer, add the product of step (2) simultaneously, stir 1 ~ 3 minute, then the anti-dripping agent, polyoxyethylene glycol, oxidation inhibitor and the lubricant that take by weight ratio is added, make to stir 3 ~ 15 minutes together, evenly rear discharging to be mixed;

(4), the compound of step (3) is added in twin screw extruder, extrudes through melting mixing at 180 DEG C ~ 260 DEG C temperature, cooling granulation, drying, obtain the flame-retardant modified PTT polyester of one of the present invention.