CN104845287A - Core-shell particle filled and modified PET/PTT alloy - Google Patents

Abstract

The invention discloses a core-shell particle filled and modified PET/PTT alloy, which comprises the following components by mass: 30%-60% of PET, 20%-30% of PTT, 2%-4% of E-MA-GMA, 5%-15% of calcium carbonate particles, 0.5%-2% of diisocyanate, 1%-4% of ethylene glycol, 0.1%-0.5% of an antioxidant, 0.1%-1% of a lubricant, 8%-12% of glass fiber, and 1%-3% of an antistatic agent. The core-shell particle filled and modified PET/PTT alloy provided by the invention integrates the respective advantages of PET and PTT, also has excellent toughening, reinforcing, stiffening and antistatic properties, has good mechanical properties, high heat resistance, good appearance, and is low in cost, thus being suitable for industrial production and popularization and application.

Description

The PET/PTT alloy that a kind of core-shell particle is filling-modified

Technical field

The present invention relates to technical field of polymer materials, the PET/PTT alloy that specifically a kind of core-shell particle is filling-modified.

Background technology

Polyethylene terephthalate (PET)/Poly(Trimethylene Terephthalate) (PTT) belongs to a kind of novel high molecular plastic alloy material, it has the performances such as excellent forming process, shock resistance, chemical-resistant resistance, thus will have broad application prospects in automobile, electric, the field such as household electrical appliances, fiber.But the mechanical property of PET/PTT is unstable, resistance to height hot bad, antistatic property is bad, will significantly limit its effect.In order to promote the performance of PET/PTT, often needing in PET/PTT, add three components and carrying out modification, as compatilizer, inorganic particulate, elastomerics etc., to obtain the compound system having much practical value.But in PET/PTT, only add elastomerics can play good toughening modifying effect, but reduce the rigidity of PET/PTT; Although if only add inorganic particulate at PET/PTT can improve rigidity, reduce toughness.Core-shell particle can have simultaneously toughness reinforcing, strengthen and increase firm good result, but also the original advantage of PET/PTT can be kept, thus, will there is very high practical value and application prospect with core-shell particle filling-modified PE T/PTT.

Summary of the invention

The object of the present invention is to provide the PET/PTT alloy that a kind of core-shell particle with Good All-around Property is filling-modified.

The technical solution adopted for the present invention to solve the technical problems is: the PET/PTT alloy that a kind of core-shell particle is filling-modified, and its component by mass percent proportioning is: PET 30% ~ 60%, PTT 20% ~ 30%, E-MA-GMA 2% ~ 4%, calcium carbonate particles 5% ~ 15%, vulcabond 0.5% ~ 2%, ethylene glycol 1% ~ 4%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%, glass fibre 8% ~ 12%, static inhibitor 1% ~ 3%.

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 E-MA-GMA is ethylene-ethylacrylate-glycidyl methacrylate triblock copolymer.

Described calcium carbonate particles is the water-ground limestone that particle diameter is less than 5 μm.

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.

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

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

The preparation method of the PET/PTT alloy that above-mentioned a kind of core-shell particle is filling-modified, 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, by calcium carbonate particles at 60 DEG C ~ 100 DEG C temperature dry 1 ~ 2 hour, stand-by;

(2), take dry calcium carbonate particles by weight ratio and add barrel temperature in 40 DEG C ~ 70 DEG C mixing machines, add the ethylene glycol taken by weight ratio simultaneously, make stirring at low speed 5 ~ 30 minutes together, add the vulcabond taken by weight ratio again, and high-speed stirring 5 ~ 60 minutes, make abundant addition polymerization and coated caco3 particle, then dry PTT is added by important proportioning, and add the oxidation inhibitor and lubricant that take by weight ratio, make to stir 3 ~ 5 minutes together, after fully mixing, discharging adds twin screw extruder and melt extrudes pelletizing, and after drying, i.e. obtained a kind of nuclear shell master batch based on PTT,

(3), taking dry PET by weight ratio adds in super mixer, add the nuclear shell master batch that step (2) is obtained again, and add E-MA-GMA and static inhibitor 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 180 ~ 600r/min, processing temperature is 200 DEG C ~ 280 DEG C scopes, then extruding pelletization, obtain the PET/PTT alloy that a kind of core-shell particle of the present invention is filling-modified.

The invention has the beneficial effects as follows, the present invention combines PET and PTT advantage separately, but also have excellent toughness reinforcing, strengthen, increased just and antistatic property, its mechanical property is good, and thermotolerance is high, and outward appearance is good, and cost is low, is suitable for suitability for industrialized production and applies.

Embodiment

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

Embodiment 1:

The PET/PTT alloy that a kind of core-shell particle is filling-modified, its component by mass percent proportioning is: PET 30%, PTT 30%, E-MA-GMA 3%, calcium carbonate particles 15%, vulcabond 2%, ethylene glycol 4%, the compound 0.5% of antioxidant 1076 and irgasfos 168, pentaerythritol stearate 1%, glass fibre 12%, polyethylene oxide 2.5%, 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 calcium carbonate particles is the water-ground limestone that particle diameter is less than 5 μm, described glass fibre is the alkali-free short glass fiber of surface through silane coupling agent process.

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, by calcium carbonate particles at 60 DEG C ~ 100 DEG C temperature dry 1 ~ 2 hour, stand-by, (2), take dry calcium carbonate particles by weight ratio and add barrel temperature in 40 DEG C ~ 70 DEG C mixing machines, add the ethylene glycol taken by weight ratio simultaneously, make stirring at low speed 5 ~ 30 minutes together, add the vulcabond taken by weight ratio again, and high-speed stirring 5 ~ 60 minutes, make abundant addition polymerization and coated caco3 particle, then dry PTT is added by important proportioning, and add the compound of antioxidant 1076 and the irgasfos 168 taken by weight ratio, pentaerythritol stearate, make to stir 3 ~ 5 minutes together, after fully mixing, discharging adds twin screw extruder and melt extrudes pelletizing, and after drying, i.e. obtained a kind of nuclear shell master batch based on PTT, (3), taking dry PET by weight ratio adds in super mixer, add the nuclear shell master batch that step (2) is obtained again, and add E-MA-GMA and polyethylene oxide 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 180 ~ 600r/min, processing temperature is 200 DEG C ~ 280 DEG C scopes, then extruding pelletization, obtain the PET/PTT alloy that a kind of core-shell particle of the present invention is filling-modified.

Embodiment 2:

The PET/PTT alloy that a kind of core-shell particle is filling-modified, its component by mass percent proportioning is: PET 60%, PTT 20%, E-MA-GMA 3%, calcium carbonate particles 5%, vulcabond 0.5%, ethylene glycol 1.5%, antioxidant 1010 0.1%, modification ethylene bis-fatty acid amides 0.4%, glass fibre 8%, polyether ester amides 1.5%, 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 calcium carbonate particles is the water-ground limestone that particle diameter is less than 5 μm, described glass fibre is the alkali-free short glass fiber of surface through silane coupling agent process.

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, by calcium carbonate particles at 60 DEG C ~ 100 DEG C temperature dry 1 ~ 2 hour, stand-by, (2), take dry calcium carbonate particles by weight ratio and add barrel temperature in 40 DEG C ~ 70 DEG C mixing machines, add the ethylene glycol taken by weight ratio simultaneously, make stirring at low speed 5 ~ 30 minutes together, add the vulcabond taken by weight ratio again, and high-speed stirring 5 ~ 60 minutes, make abundant addition polymerization and coated caco3 particle, then dry PTT is added by important proportioning, and add the antioxidant 1010 taken by weight ratio, modification ethylene bis-fatty acid amides, make to stir 3 ~ 5 minutes together, after fully mixing, discharging adds twin screw extruder and melt extrudes pelletizing, and after drying, i.e. obtained a kind of nuclear shell master batch based on PTT, (3), taking dry PET by weight ratio adds in super mixer, add the nuclear shell master batch that step (2) is obtained again, and add E-MA-GMA and polyether ester amides 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 180 ~ 600r/min, processing temperature is 200 DEG C ~ 280 DEG C scopes, then extruding pelletization, obtain the PET/PTT alloy that a kind of core-shell particle of the present invention is filling-modified.

Claims (5)

1. the PET/PTT alloy that a core-shell particle is filling-modified, it is characterized in that, its component by mass percent proportioning is: PET 30% ~ 60%, PTT 20% ~ 30%, E-MA-GMA 2% ~ 4%, calcium carbonate particles 5% ~ 15%, vulcabond 0.5% ~ 2%, ethylene glycol 1% ~ 4%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%, glass fibre 8% ~ 12%, static inhibitor 1% ~ 3%.

2. the PET/PTT alloy that a kind of core-shell particle according to claim 1 is filling-modified, is characterized in that, described calcium carbonate particles is the water-ground limestone that particle diameter is less than 5 μm.

3. the PET/PTT alloy that a kind of core-shell particle according to claim 1 is filling-modified, 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 that a kind of core-shell particle according to claim 1 is filling-modified, it is characterized in that, described static inhibitor is one or more in polyethylene oxide, polyether ester amides, polyether ester imide, polyethylene glycol alkyl ether, glycerol monostearate, alkyl sodium sulfonate.

5. the preparation method of the PET/PTT alloy that a kind of core-shell particle according to claim 1 is filling-modified, 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, by calcium carbonate particles at 60 DEG C ~ 100 DEG C temperature dry 1 ~ 2 hour, stand-by;

(2), take dry calcium carbonate particles by weight ratio and add barrel temperature in 40 DEG C ~ 70 DEG C mixing machines, add the ethylene glycol taken by weight ratio simultaneously, make stirring at low speed 5 ~ 30 minutes together, add the vulcabond taken by weight ratio again, and high-speed stirring 5 ~ 60 minutes, make abundant addition polymerization and coated caco3 particle, then dry PTT is added by important proportioning, and add the oxidation inhibitor and lubricant that take by weight ratio, make to stir 3 ~ 5 minutes together, after fully mixing, discharging adds twin screw extruder and melt extrudes pelletizing, and after drying, i.e. obtained a kind of nuclear shell master batch based on PTT,

(3), taking dry PET by weight ratio adds in super mixer, add the nuclear shell master batch that step (2) is obtained again, and add E-MA-GMA and static inhibitor 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 180 ~ 600r/min, processing temperature is 200 DEG C ~ 280 DEG C scopes, then extruding pelletization, obtain the PET/PTT alloy that a kind of core-shell particle of the present invention is filling-modified.