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Core-shell structure toughened PET (polyethylene terephthalate) material and preparation method

A core-shell structure and toughening technology, which is applied in the field of core-shell structure toughened PET materials and its preparation, can solve the problems of reducing material rigidity, reducing material toughness, and material mechanical properties that cannot be expected, achieving low cost and high processing efficiency. Good performance, simple and practical preparation method

Inactive Publication Date: 2015-02-11
QINGDAO XINZHAN PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Yet in above-mentioned prior art, use elastomer alone and also can reduce the rigidity of material while improving material toughness; And use inorganic rigid particle alone can reduce the toughness of material again while improving material rigidity; Elastomer, inorganic rigidity Particle blending will make the interaction of the two substances affect each other, so that the mechanical properties of the material will not get the expected effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A toughened PET material with a core-shell structure, the components of which are: 78% PET, 10% calcium carbonate with an average particle size between 0.01μm and 5μm, 1.5% diisocyanate, and 3% ethylene glycol , maleic anhydride grafted ethylene-octene copolymer (POE-g-MAH) 5%, talc powder 1%, pentaerythritol stearate 1%, hindered phenol antioxidant 1010 and phosphite antioxidant 168 0.5% of the compound.

[0023] Preparation method: (1) Dry PET at 130°C-150°C for 3-4 hours, control the moisture content below 0.03%, and wait for use; (2) Weigh the average particle size between 0.01μm-5μm according to the weight ratio Calcium carbonate and ethylene glycol in between, add to the mixer and stir at low speed for 0.5 to 15 minutes, then add diisocyanate and stir at high speed at 60°C to 80°C for 10 to 60 minutes to fully add polymerization and coating; (3 ) and then add the dried PET and maleic anhydride grafted ethylene-octene copolymer (POE-g-MAH), talcum powder, pentaery...

Embodiment 2

[0025] A toughened PET material with a core-shell structure, the components of which are: 85% PET, 8% calcium carbonate with an average particle size between 0.01 μm and 5 μm, 1% diisocyanate, and 2% ethylene glycol. , maleic anhydride grafted ethylene-propylene-diene copolymer (EPDM-g-MAH) 3%, talc powder 0.5%, TAS-2A dispersant 0.3%, hindered phenol antioxidant 1010 and phosphite antioxidant The compound of agent 168 is 0.2%.

[0026] Preparation method: (1) Dry PET at 130°C-150°C for 3-4 hours, control the moisture content below 0.03%, and wait for use; (2) Weigh the average particle size between 0.01μm-5μm according to the weight ratio Calcium carbonate and ethylene glycol in between, add to the mixer and stir at low speed for 0.5 to 15 minutes, then add diisocyanate and stir at high speed at 60°C to 80°C for 10 to 60 minutes to fully add polymerization and coating; (3 ) and then add the dried PET and maleic anhydride grafted ethylene-propylene-diene copolymer (EPDM-g-MAH...

Embodiment 3

[0028] A toughened PET material with a core-shell structure, the components of which are: 73% PET, 12% calcium carbonate with an average particle size between 0.01 μm and 5 μm, 2% diisocyanate, and 4% ethylene glycol , Ethylene-methyl acrylate-glycidyl methacrylate terpolymer (E-MA-GMA) 6%, aluminum hydroxide 1.5%, ethylene bisstearamide (EBS) 1%, hindered phenol antioxidant The compound of 1076 and phosphite antioxidant 168 is 0.5%.

[0029] Preparation method: (1) Dry PET at 130°C-150°C for 3-4 hours, control the moisture content below 0.03%, and wait for use; (2) Weigh the average particle size between 0.01μm-5μm according to the weight ratio Calcium carbonate and ethylene glycol in between, add to the mixer and stir at low speed for 0.5 to 15 minutes, then add diisocyanate and stir at high speed at 60°C to 80°C for 10 to 60 minutes to fully add polymerization and coating; (3 ) and then add PET and ethylene-methyl acrylate-glycidyl methacrylate terpolymer (E-MA-GMA), alumi...

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Abstract

The invention discloses a core-shell structure toughened PET (polyethylene terephthalate) material comprising the following components by mass: 70%-85% of PET, 8%-12% of inorganic rigid particles, 1%-2% of diisocyanate, 2%-4% of ethylene glycol, 3%-8% of a compatibilizer, 0.5%-2% of a nucleating agent, 0.1%-2% of a dispersant and0.1%-1% of an antioxidant. The beneficial effect of the core-shell structure toughening PET material is in that, compared with the prior art, the diisocyanate and the ethylene glycol are stirred in a mixer for addition polymerization to produce polyurethane rubber elastomer, and the polyurethane rubber elastomer coats the surface of the inorganic rigid particles to form a core-shell structure with the rigid inorganic particles as the core and the elastomer a shell, so that respective advantages are well combined and played, good synergistic toughening and reinforcing effects on the PET material are played, the PET material has the advantages of good processing performance, low cost, and the like, and can be widely used in electronic and electrical appliances, auto parts, machinery parts and other fields.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a toughened PET material with a core-shell structure and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (PET) is a linear thermoplastic polymer that was first industrialized by Dupont in 1953. It is a typical semi-crystalline polymer with excellent wear resistance, heat resistance and corrosion resistance. properties, electrical insulation and mechanical properties, and are widely used in the fields of fibers, films and beverage bottles. However, when PET is used as an injection molding engineering plastic, there are disadvantages such as slow crystallization speed, large dimensional shrinkage rate, and low impact strength of the product. While increasing the crystallization speed and crystallinity, the impact strength of the product is further reduced. Therefore, it is necessary to increase it. Toughness modification, in order t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L51/06C08L51/00C08K13/06C08K9/04C08K3/26C08K3/34C08K3/22C08K5/103C08K5/20C08K5/524C08G18/32
Inventor 殷海英张正任海川
Owner QINGDAO XINZHAN PLASTIC
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