CN105462214A - Modified material and preparation method therefor - Google Patents

Abstract

The invention discloses a modified material and a preparation method therefor. A nanoparticle modifying filled PC/PET alloy disclosed by the invention contains the ingredients in percentage by mass: 45-60% of PC, 15-40% of PET, 5-10% of nanoparticles, 2-5% of toughening compatibilizer, 0.1-0.5% of coupling agent, 0.5-2% of photostabilizer, 0.1-0.5% of antioxidant and 0.1-1% of lubricant. The nanoparticle modifying filled PC/PET alloy has the beneficial effects that compared with the prior art, the PC/PET alloy disclosed by the invention has the advantages that the PC/PET alloy simultaneously has inherent advantages of PC and PET, the property defect of a single ingredient is made up, the compatibility of blending of PC and PET is good, the aging resistance is excellent, and the processability is good; and meanwhile, the nanoparticles are added to carry out modification, so that the tensile strength, impact strength, wear resistance, heat resistance, electric properties and the like of an alloy system can be remarkably improved.

Description

One is material modified and preparation method thereof

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of nanometer particle-modified filling PC/PET Alloy And Preparation Method.

Background technology

Polycarbonate/polyethylene terephthalate (PC/PET alloy) is a kind of engineering plastics of excellent combination property, it had both had PC rigidity and thermotolerance, there is again the solvent resistance of PET, the fields such as automobile, electronic apparatus, chemical industry can be widely used in.Then, because PET is crystalline polymer, PC is non-crystalline polymer, and PC/PET alloy belongs to typical amorphous/crystallization co-mixing system, and its consistency is poor, and intensity is not good enough, affects its application in some field.Therefore, usually in PC/PET alloy system, add three components or auxiliary agent, the performance of PC/PET alloy can be improved and expand its application space.

Summary of the invention

The object of the present invention is to provide a kind of nanometer particle-modified filling PC/PET Alloy And Preparation Method.

The technical solution adopted for the present invention to solve the technical problems is: a kind of nanometer particle-modified filling PC/PET alloy, its component by mass percent proportioning is: PC45% ~ 60%, PET15% ~ 40%, nanoparticle 5% ~ 10%, toughness reinforcing compatilizer 2% ~ 5%, coupling agent 0.1% ~ 0.5%, photostabilizer 0.5% ~ 2%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%.

Described PC is bisphenol A-type aromatic copolycarbonate, and weight-average molecular weight is 20000 ~ 35000g/mol.

Described PET is polyethylene terephthalate, and its intrinsic viscosity is 0.6 ~ 1.0dL/g.

Described nanoparticle is the aerosil of particle diameter between 10 ~ 100nm, its specific surface area 120 ~ 200m ²/ g.

Described toughness reinforcing compatilizer is Ethylene-butyl Acrylate-methacrylic Acid Glycerin Ester Copolymer (PTW), and the mass percentage content of its glycidyl methacrylate contained is 3% ~ 8%.

Described coupling agent is aluminium titanium composite coupler.

The compound of described photostabilizer to be mass ratio be hindered amine as light stabilizer HS-944 and HS-622 of 1:1.

Described oxidation inhibitor is the antioxidant 1010 of mass ratio 1:1 and the compound of irgasfos 168.

Described lubricant is pentaerythritol stearate (PETS) or ethylene bis stearamide (EBS).

The preparation method of above-mentioned a kind of nanometer particle-modified filling PC/PET alloy, comprises the following steps:

(1), by PC in blast drier at 110 DEG C ~ 130 DEG C temperature dry 3 ~ 4 hours, PET at 130 DEG C ~ 150 DEG C dry 3 ~ 4 hours, nanoparticle at 80 DEG C ~ 85 DEG C dry 30 ~ 45 minutes, stand-by;

(2), dry nanoparticle and coupling agent is taken by weight ratio, add sonic oscillation producer or rotating speed is not less than in the high-speed mixer of 3000 revs/min, stir 5 ~ 40 minutes at 100 DEG C ~ 120 DEG C temperature, obtain surface-modified nanoparticles, then be cooled to lower than 40 DEG C of dischargings, stand-by;

(3) surface-modified nanoparticles, will dry PET and step (2) be taken by weight ratio obtaining, add in high-speed mixer, stir 1 ~ 3 minute, then add the photostabilizer, oxidation inhibitor, the lubricant that take by weight ratio, continue stirring 3 ~ 15 minutes, after making fully to mix, discharging adds in twin screw extruder, extrude after melt blending at 265 DEG C ~ 290 DEG C, cooling granulation, and dry after obtained PET master batch, stand-by;

(4), PET master batch obtained to the PC and step (3) that take drying is by weight ratio added in high-speed mixer, add the toughness reinforcing compatilizer taken by weight ratio simultaneously, stir 3 ~ 10 minutes premixs at 60 DEG C ~ 80 DEG C temperature after, discharging adds in twin screw extruder, at 240 DEG C ~ 275 DEG C through plastify blended after extrude, cooling granulation, obtain one of the present invention nanometer particle-modified filling PC/PET alloy.

The invention has the beneficial effects as follows, compared with prior art, the PC/PET alloy that the present invention obtains, with the respective advantage of PC and PET, compensate for the defect in one-component performance, and both blended consistencies are good, ageing-resistant performance is excellent, processibility is good, adds the nanometer particle-modified tensile strength, resistance to impact shock, wear resistance, heat-resisting and electrical property etc. that can significantly improve alloy system simultaneously, has good effect and prospect in fields such as electronic apparatus, automobile, communications.

Embodiment

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

Embodiment 1:

A kind of nanometer particle-modified filling PC/PET alloy, its component by mass percent proportioning is: PC60%, PET25%, nanoparticle 8%, toughness reinforcing compatilizer 5%, aluminium titanium composite coupler 0.3%, mass ratio are compound 0.2%, the pentaerythritol stearate (PETS) 0.5% of the compound 1% of hindered amine as light stabilizer HS-944 and HS-622 of 1:1, the antioxidant 1010 of mass ratio 1:1 and irgasfos 168.Wherein, described PC is bisphenol A-type aromatic copolycarbonate, and weight-average molecular weight is 20000 ~ 35000g/mol; Described PET is polyethylene terephthalate, and its intrinsic viscosity is 0.6 ~ 1.0dL/g; Described nanoparticle is the aerosil of particle diameter between 10 ~ 100nm, its specific surface area 120 ~ 200m ²/ g; Described toughness reinforcing compatilizer is Ethylene-butyl Acrylate-methacrylic Acid Glycerin Ester Copolymer (PTW), and the mass percentage content of its glycidyl methacrylate contained is 3% ~ 8%.

Preparation method: (1), by PC in blast drier at 110 DEG C ~ 130 DEG C temperature dry 3 ~ 4 hours, PET at 130 DEG C ~ 150 DEG C dry 3 ~ 4 hours, nanoparticle at 80 DEG C ~ 85 DEG C dry 30 ~ 45 minutes, stand-by, (2), dry nanoparticle and aluminium titanium composite coupler is taken by weight ratio, add sonic oscillation producer or rotating speed is not less than in the high-speed mixer of 3000 revs/min, stir 5 ~ 40 minutes at 100 DEG C ~ 120 DEG C temperature, obtain surface-modified nanoparticles, then be cooled to lower than 40 DEG C of dischargings, stand-by, (3), by the surface-modified nanoparticles that the PET and step (2) that take drying by weight ratio obtain, add in high-speed mixer, stir 1 ~ 3 minute, then the compound that the mass ratio taken by weight ratio is hindered amine as light stabilizer HS-944 and HS-622 of 1:1 is added, the antioxidant 1010 of mass ratio 1:1 and the compound of irgasfos 168, pentaerythritol stearate (PETS), continue stirring 3 ~ 15 minutes, after making fully to mix, discharging adds in twin screw extruder, extrude after melt blending at 265 DEG C ~ 290 DEG C, cooling granulation, and dry rear obtained PET master batch, stand-by, (4), PET master batch obtained to the PC and step (3) that take drying is by weight ratio added in high-speed mixer, add the toughness reinforcing compatilizer taken by weight ratio simultaneously, stir 3 ~ 10 minutes premixs at 60 DEG C ~ 80 DEG C temperature after, discharging adds in twin screw extruder, at 240 DEG C ~ 275 DEG C through plastify blended after extrude, cooling granulation, obtain one of the present invention nanometer particle-modified filling PC/PET alloy.

Embodiment 2:

A kind of nanometer particle-modified filling PC/PET alloy, its component by mass percent proportioning is: PC48%, PET35%, nanoparticle 10%, toughness reinforcing compatilizer 5%, aluminium titanium composite coupler 0.5%, mass ratio are compound 0.2%, the ethylene bis stearamide (EBS) 0.5% of the compound 0.8% of hindered amine as light stabilizer HS-944 and HS-622 of 1:1, the antioxidant 1010 of mass ratio 1:1 and irgasfos 168.Wherein, described PC is bisphenol A-type aromatic copolycarbonate, and weight-average molecular weight is 20000 ~ 35000g/mol; Described PET is polyethylene terephthalate, and its intrinsic viscosity is 0.6 ~ 1.0dL/g; Described nanoparticle is the aerosil of particle diameter between 10 ~ 100nm, its specific surface area 120 ~ 200m ²/ g; Described toughness reinforcing compatilizer is Ethylene-butyl Acrylate-methacrylic Acid Glycerin Ester Copolymer (PTW), and the mass percentage content of its glycidyl methacrylate contained is 3% ~ 8%.

Preparation method: (1), by PC in blast drier at 110 DEG C ~ 130 DEG C temperature dry 3 ~ 4 hours, PET at 130 DEG C ~ 150 DEG C dry 3 ~ 4 hours, nanoparticle at 80 DEG C ~ 85 DEG C dry 30 ~ 45 minutes, stand-by, (2), dry nanoparticle and aluminium titanium composite coupler is taken by weight ratio, add sonic oscillation producer or rotating speed is not less than in the high-speed mixer of 3000 revs/min, stir 5 ~ 40 minutes at 100 DEG C ~ 120 DEG C temperature, obtain surface-modified nanoparticles, then be cooled to lower than 40 DEG C of dischargings, stand-by, (3), by the surface-modified nanoparticles that the PET and step (2) that take drying by weight ratio obtain, add in high-speed mixer, stir 1 ~ 3 minute, then the compound that the mass ratio taken by weight ratio is hindered amine as light stabilizer HS-944 and HS-622 of 1:1 is added, the antioxidant 1010 of mass ratio 1:1 and the compound of irgasfos 168, ethylene bis stearamide (EBS), continue stirring 3 ~ 15 minutes, after making fully to mix, discharging adds in twin screw extruder, extrude after melt blending at 265 DEG C ~ 290 DEG C, cooling granulation, and dry rear obtained PET master batch, stand-by, (4), PET master batch obtained to the PC and step (3) that take drying is by weight ratio added in high-speed mixer, add the toughness reinforcing compatilizer taken by weight ratio simultaneously, stir 3 ~ 10 minutes premixs at 60 DEG C ~ 80 DEG C temperature after, discharging adds in twin screw extruder, at 240 DEG C ~ 275 DEG C through plastify blended after extrude, cooling granulation, obtain one of the present invention nanometer particle-modified filling PC/PET alloy.

Claims (4)

1. one kind material modified and preparation method thereof, it is characterized in that, its component by mass percent proportioning is: PC45% ~ 60%, PET15% ~ 40%, nanoparticle 5% ~ 10%, toughness reinforcing compatilizer 2% ~ 5%, coupling agent 0.1% ~ 0.5%, photostabilizer 0.5% ~ 2%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%.

2. one according to claim 1 is material modified and preparation method thereof, and it is characterized in that, described nanoparticle is the aerosil of particle diameter between 10 ~ 100nm, its specific surface area 120 ~ 200m ²/ g.

3. one according to claim 1 is material modified and preparation method thereof, it is characterized in that, described toughness reinforcing compatilizer is Ethylene-butyl Acrylate-methacrylic Acid Glycerin Ester Copolymer (PTW), and the mass percentage content of its glycidyl methacrylate contained is 3% ~ 8%; Described coupling agent is aluminium titanium composite coupler; The compound of photostabilizer to be mass ratio be hindered amine as light stabilizer HS-944 and HS-622 of 1:1.

4. one according to claim 1 is material modified and preparation method thereof, it is characterized in that, comprises the following steps:

(1), by PC in blast drier at 110 DEG C ~ 130 DEG C temperature dry 3 ~ 4 hours, PET at 130 DEG C ~ 150 DEG C dry 3 ~ 4 hours, nanoparticle at 80 DEG C ~ 85 DEG C dry 30 ~ 45 minutes, stand-by;

(2), dry nanoparticle and coupling agent is taken by weight ratio, add sonic oscillation producer or rotating speed is not less than in the high-speed mixer of 3000 revs/min, stir 5 ~ 40 minutes at 100 DEG C ~ 120 DEG C temperature, obtain surface-modified nanoparticles, then be cooled to lower than 40 DEG C of dischargings, stand-by;

(3) surface-modified nanoparticles, will dry PET and step (2) be taken by weight ratio obtaining, add in high-speed mixer, stir 1 ~ 3 minute, then add the photostabilizer, oxidation inhibitor, the lubricant that take by weight ratio, continue stirring 3 ~ 15 minutes, after making fully to mix, discharging adds in twin screw extruder, extrude after melt blending at 265 DEG C ~ 290 DEG C, cooling granulation, and dry after obtained PET master batch, stand-by;

(4), PET master batch obtained to the PC and step (3) that take drying is by weight ratio added in high-speed mixer, add the toughness reinforcing compatilizer taken by weight ratio simultaneously, stir 3 ~ 10 minutes premixs at 60 DEG C ~ 80 DEG C temperature after, discharging adds in twin screw extruder, at 240 DEG C ~ 275 DEG C through plastify blended after extrude, cooling granulation, obtain one of the present invention nanometer particle-modified filling PC/PET alloy.