CN104845278A - PET/PTT/kaolin composite material and preparation method thereof - Google Patents

Abstract

The invention discloses a PET/PTT/kaolin composite material and a preparation method thereof. The PET/PTT/kaolin composite material provided by the invention comprises the following components by mass: 28%-60% of PET, 20%-30% of PTT, 5%-15% of kaolin, 0.1%-0.5% of a coupling agent, 5%-8% of a plasticizer, 2%-4% of a compatilizer, 1%-3% of an antistatic agent, 0.1%-0.5% of an antioxidant, 0.1%-1% of a lubricant, and 6%-10% of a flame retardant. The kaolin is nano-kaolin with a longitudinal thickness of 20-50nm and a lamellar size of 300-500nm. The PET/PTT/kaolin composite material provided by the invention has the advantages of high strength, good impact resistance, good heat resistance and low cost, etc., also the flame resistance is good, the chemical resistance is strong, the size stability is good, and the preparation process is simple.

Description

A kind of PET/PTT/ kaolin composite material and preparation method thereof

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of PET/PTT/ kaolin composite material and preparation method thereof.

Background technology

Polyethylene terephthalate (PET)/Poly(Trimethylene Terephthalate) (PTT) belongs to a kind of novel high molecular plastic alloy material, it has excellent physicochemical property and processing characteristics, and cost is low, thus will have broad application prospects in automobile, electric, the field such as household electrical appliances, fiber.But the poor fire of PET/PTT, mechanical property are unstable, resistance to high-heat performance is bad, static resistance is bad, will significantly limit its effect.In order to promote the performance of PET/PTT, often need add three components in PET/PTT and carrying out modification, to obtain the composite system having much practical value.

Summary of the invention

The object of the present invention is to provide that a kind of good flame resistance, intensity are high, the PET/PTT/ kaolin composite material that has excellent antistatic properties and preparation method thereof.

The technical solution adopted for the present invention to solve the technical problems is: a kind of PET/PTT/ kaolin composite material, and its component by mass percent proportioning is: PET 28% ~ 60%, PTT 20% ~ 30%, kaolin 5% ~ 15%, coupling agent 0.1% ~ 0.5%, softening agent 5% ~ 8%, compatilizer 2% ~ 4%, static inhibitor 1% ~ 3%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%, fire retardant 6% ~ 10%.

Described PET is polyethylene terephthalate.

Described PTT is Poly(Trimethylene Terephthalate).

Described kaolin is that longitudinal thickness is at 20 ~ 50nm, the nano kaoline of lamella size within the scope of 300 ~ 500nm.

Described coupling agent is γ-aminopropyltrimethoxysilane.

Described softening agent is polybutylene terephthalate-polyethylene oxide-poly(propylene oxide) triblock copolymer.

Described compatilizer is ethylene-ethylacrylate-glycidyl methacrylate triblock copolymer.

Described static inhibitor is at least one in polyethylene oxide, polyether ester amides, polyether ester imide, polyethylene glycol alkyl ether, glycerol monostearate, alkyl sodium sulfonate.

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

Described lubricant is pentaerythritol stearate.

Described fire retardant is at least one in TDE, melamine cyanurate, dihydroxyphenyl propane-bis-(diphenyl phosphoester), polyphenylene phosphonic acids sulfobenzide ester.

The preparation method of above-mentioned a kind of PET/PTT/ kaolin composite 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, kaolin and fire retardant at 80 DEG C ~ 85 DEG C temperature dry 30 ~ 45 minutes, stand-by;

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

(3) PTT and the fire retardant that, take drying by weight ratio add in super mixer, and add static inhibitor, oxidation inhibitor, lubricant by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds twin screw extruder and melt extrudes pelletizing and after drying, namely obtain a kind of PTT composite master batch;

(4), taking dry PET by weight ratio adds in super mixer, add product that step (2) obtains and the obtained PTT composite master batch of step (3) again, and add softening agent and compatilizer by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds in twin screw extruder, extrudes, cooling granulation at 210 DEG C ~ 280 DEG C after melt blending, then dry, obtain a kind of PET/PTT/ kaolin composite material of the present invention.

The invention has the beneficial effects as follows, the present invention has that intensity is high, good impact resistance, thermotolerance are high, low cost and other advantages, and good flame resistance, and chemical resistant properties is strong, and dimensional stability is good, and preparation technology is simple.

Embodiment

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

Embodiment 1:

A kind of PET/PTT/ kaolin composite material, its component by mass percent proportioning is: PET 28%, PTT 30%, kaolin 15%, γ-aminopropyltrimethoxysilane 0.5%, polybutylene terephthalate-polyethylene oxide-poly(propylene oxide) triblock copolymer 8%, ethylene-ethylacrylate-glycidyl methacrylate triblock copolymer 4%, polyethylene oxide 3%, oxidation inhibitor 0.5%, pentaerythritol stearate 1%, TDE 10%, described kaolin is that longitudinal thickness is at 20 ~ 50nm, the nano kaoline of lamella size within the scope of 300 ~ 500nm, described oxidation inhibitor is the Hinered phenols antioxidant 1010 of mass ratio 1:1 and the compound of phosphite ester kind antioxidant 168.

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, kaolin and TDE at 80 DEG C ~ 85 DEG C temperature dry 30 ~ 45 minutes, stand-by, (2), take dry kaolin by weight ratio and add barrel temperature in the high-speed mixer of 80 DEG C ~ 120 DEG C, and add γ-aminopropyltrimethoxysilane by weight ratio, after rotating speed 3000 ~ 4500 revs/min stirs 10 ~ 45 minutes, be cooled to lower than 40 DEG C of dischargings stand-by, stand-by, (3) PTT and the TDE that, take drying by weight ratio add in super mixer, and add polyethylene oxide, oxidation inhibitor, pentaerythritol stearate by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds twin screw extruder and melt extrudes pelletizing and after drying, namely obtain a kind of PTT composite master batch, (4), taking dry PET by weight ratio adds in super mixer, add product that step (2) obtains and the obtained PTT composite master batch of step (3) again, and add polybutylene terephthalate-polyethylene oxide-poly(propylene oxide) triblock copolymer by weight ratio, ethylene-ethylacrylate-glycidyl methacrylate triblock copolymer, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds in twin screw extruder, extrude after melt blending at 210 DEG C ~ 280 DEG C, cooling granulation, then dry, obtain a kind of PET/PTT/ kaolin composite material of the present invention.

Embodiment 2:

A kind of PET/PTT/ kaolin composite material, its component by mass percent proportioning is: PET 60%, PTT 20%, kaolin 5%, γ-aminopropyltrimethoxysilane 0.1%, polybutylene terephthalate-polyethylene oxide-poly(propylene oxide) triblock copolymer 5%, ethylene-ethylacrylate-glycidyl methacrylate triblock copolymer 2%, polyether ester amides 1%, oxidation inhibitor 0.1%, pentaerythritol stearate 0.8%, melamine cyanurate 6%, described kaolin is that longitudinal thickness is at 20 ~ 50nm, the nano kaoline of lamella size within the scope of 300 ~ 500nm, 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: (1), by PET and PTT in forced air circulation baking oven at 110 DEG C ~ 120 DEG C temperature dry 6 ~ 8 hours, kaolin and melamine cyanurate at 80 DEG C ~ 85 DEG C temperature dry 30 ~ 45 minutes, stand-by, (2), take dry kaolin by weight ratio and add barrel temperature in the high-speed mixer of 80 DEG C ~ 120 DEG C, and add γ-aminopropyltrimethoxysilane by weight ratio, after rotating speed 3000 ~ 4500 revs/min stirs 10 ~ 45 minutes, be cooled to lower than 40 DEG C of dischargings stand-by, stand-by, (3) PTT and the melamine cyanurate that, take drying by weight ratio add in super mixer, and add polyether ester amides, oxidation inhibitor, pentaerythritol stearate by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds twin screw extruder and melt extrudes pelletizing and after drying, namely obtain a kind of PTT composite master batch, (4), taking dry PET by weight ratio adds in super mixer, add product that step (2) obtains and the obtained PTT composite master batch of step (3) again, and add polybutylene terephthalate-polyethylene oxide-poly(propylene oxide) triblock copolymer by weight ratio, ethylene-ethylacrylate-glycidyl methacrylate triblock copolymer, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds in twin screw extruder, extrude after melt blending at 210 DEG C ~ 280 DEG C, cooling granulation, then dry, obtain a kind of PET/PTT/ kaolin composite material of the present invention.

Claims (10)

1. a PET/PTT/ kaolin composite material, it is characterized in that, its component by mass percent proportioning is: PET 28% ~ 60%, PTT 20% ~ 30%, kaolin 5% ~ 15%, coupling agent 0.1% ~ 0.5%, softening agent 5% ~ 8%, compatilizer 2% ~ 4%, static inhibitor 1% ~ 3%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%, fire retardant 6% ~ 10%.

2. a kind of PET/PTT/ kaolin composite material according to claim 1, is characterized in that, described kaolin is that longitudinal thickness is at 20 ~ 50nm, the nano kaoline of lamella size within the scope of 300 ~ 500nm.

3. a kind of PET/PTT/ kaolin composite material according to claim 1, is characterized in that, described coupling agent is γ-aminopropyltrimethoxysilane.

4. a kind of PET/PTT/ kaolin composite material according to claim 1, is characterized in that, described softening agent is polybutylene terephthalate-polyethylene oxide-poly(propylene oxide) triblock copolymer.

5. a kind of PET/PTT/ kaolin composite material according to claim 1, is characterized in that, described compatilizer is ethylene-ethylacrylate-glycidyl methacrylate triblock copolymer.

6. a kind of PET/PTT/ kaolin composite material according to claim 1, it is characterized in that, described static inhibitor is at least one in polyethylene oxide, polyether ester amides, polyether ester imide, polyethylene glycol alkyl ether, glycerol monostearate, alkyl sodium sulfonate.

7. a kind of PET/PTT/ kaolin composite material according to claim 1, is characterized in that, described oxidation inhibitor is the Hinered phenols antioxidant 1010 or 1076 of mass ratio 1:1 and the compound of phosphite ester kind antioxidant 168.

8. a kind of PET/PTT/ kaolin composite material according to claim 1, is characterized in that, described lubricant is pentaerythritol stearate.

9. a kind of PET/PTT/ kaolin composite material according to claim 1, is characterized in that, described fire retardant is at least one in TDE, melamine cyanurate, dihydroxyphenyl propane-bis-(diphenyl phosphoester), polyphenylene phosphonic acids sulfobenzide ester.

10. the preparation method of a kind of PET/PTT/ kaolin composite 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, kaolin and fire retardant at 80 DEG C ~ 85 DEG C temperature dry 30 ~ 45 minutes, stand-by;

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

(3) PTT and the fire retardant that, take drying by weight ratio add in super mixer, and add static inhibitor, oxidation inhibitor, lubricant by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds twin screw extruder and melt extrudes pelletizing and after drying, namely obtain a kind of PTT composite master batch;

(4), taking dry PET by weight ratio adds in super mixer, add product that step (2) obtains and the obtained PTT composite master batch of step (3) again, and add softening agent and compatilizer by weight ratio, make to be mixed together 3 ~ 5 minutes, after fully mixing, discharging adds in twin screw extruder, extrudes, cooling granulation at 210 DEG C ~ 280 DEG C after melt blending, then dry, obtain a kind of PET/PTT/ kaolin composite material of the present invention.