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High heat-resistant fire-retardant reinforced polyethylene terephthalate (PET) composition and preparation method thereof

A composition, high heat resistance technology, applied in the field of engineering plastic modification, can solve problems such as effective utilization rate and poor heat resistance, and achieve the effects of excellent comprehensive performance, high thermal deformation temperature and short molding cycle.

Active Publication Date: 2012-12-12
QINGDAO HAIER NEW MATERIAL R&D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a high heat-resistant and flame-retardant reinforced PET composition and a preparation method thereof, which can solve the problem of poor effective use rate and heat resistance of the material due to inconsistency of the nucleating agent in the preparation process in the prior art. question

Method used

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  • High heat-resistant fire-retardant reinforced polyethylene terephthalate (PET) composition and preparation method thereof
  • High heat-resistant fire-retardant reinforced polyethylene terephthalate (PET) composition and preparation method thereof
  • High heat-resistant fire-retardant reinforced polyethylene terephthalate (PET) composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Preparation of nucleating agent masterbatch: take 50 parts of polyethylene terephthalate as carrier, add 10 parts of sodium benzoate, 30 parts of ethylene-acrylic acid copolymer sodium salt, and 10 parts of nano-calcium carbonate, and co-extrude through twin-screw Prepare the nucleating agent masterbatch by granulation, and dry the pellets at 120°C for 6 hours for later use;

[0039] Extrusion molding: 50 parts of polyethylene terephthalate ([η]=0.67, Tm=250°C), 1 part of the above-mentioned nucleating agent masterbatch, ethylene-methyl acrylate-glycidyl methacrylate 5 parts of copolymer, 10 parts of decabromodiphenylethane, 4 parts of antimony trioxide, 0.5 parts of lubricant ethylene bisstearamide, 0.2 parts of chain extender acrylic polymer, 0.5 parts of antioxidant (1010:168 =2:3) After mixing in proportion, put it into a high-speed mixer and stir for 3-5 minutes; put the mixed material into a twin-screw extruder, and then add 30 parts of glass fiber reinforcing age...

Embodiment 2

[0042] Preparation of nucleating agent masterbatch: take 60 parts of polyethylene terephthalate as carrier, add 10 parts of sodium stearate, 20 parts of ethylene-acrylic acid copolymer sodium salt, and 10 parts of nano-calcium carbonate. Prepare nucleating agent masterbatch by mixed extrusion granulation, and dry the pellets at 120°C for 6 hours for later use;

[0043]Extrusion molding: 50 parts of polyethylene terephthalate ([η]=0.67, Tm=250°C), 2 parts of the above-mentioned nucleating agent masterbatch, ethylene-methyl acrylate-glycidyl methacrylate 5 parts of copolymer, 10 parts of brominated polystyrene, 4 parts of antimony trioxide, 0.5 parts of lubricant ethylene bis stearamide, 0.2 parts of chain extender acrylic polymer, and 0.5 parts of antioxidant (1010:168 =2:3) After mixing in proportion, put it into a high-speed mixer and stir for 3-5 minutes; put the mixed material into a twin-screw extruder, and then add 30 parts of glass fiber reinforcing agent continuously, m...

Embodiment 3

[0046] Preparation of nucleating agent masterbatch: take 40 parts of polyethylene terephthalate as the carrier, add 20 parts of sodium benzoate, 30 parts of ethylene-acrylic acid copolymer sodium salt, and 10 parts of talcum powder, and extrude through twin-screw blending Prepare nucleating agent masterbatch by granulation, and dry the pellets at 120°C for 6 hours for later use;

[0047] Extrusion molding: 52 parts of polyethylene terephthalate ([η]=0.67, Tm=250°C), 3 parts of the above-mentioned nucleating agent masterbatch, ethylene-methyl acrylate-glycidyl methacrylate 4 parts of copolymer, 10 parts of decabromodiphenylethane, 3 parts of antimony trioxide, 0.5 parts of lubricant ethylene bisstearamide, 0.2 parts of chain extender acrylic polymer, and 0.5 parts of antioxidant (1010: 168=2:3) After mixing in proportion, put it into a high-speed mixer and stir for 3-5 minutes; add the mixed material into a twin-screw extruder, and then continuously add 30 parts of glass fiber ...

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Abstract

The invention provides a high heat-resistant fire-retardant reinforced polyethylene terephthalate (PET) composition and a preparation method thereof. The preparation method solves the problem that the existing preparation technology produces poor effective availability and poor heat resistance of a material because of non-associated nucleating agents. The high heat-resistant fire-retardant reinforced PET composition comprises: by weight, 20 to 70 parts of PET, 2 to 8 parts of a reactive flexibilizer, 0.5 to 5 parts of nucleating agent master batches, 7 to 15 parts of a brominated flame retardant, 3 to 5 parts of an inorganic flame retardant, 10 to 30 parts of an enhancer, 0.2 to 1 part of a chain extender, 0.5 to 1 part of a lubricant and 0.1 to 1 part of one or more antioxidants. The preparation method comprises that through a unique nucleating technology and a compounding flame retardation technology, PET as a raw material is subjected to double-screw extruder-based plastification granulation so that the high heat-resistant fire-retardant reinforced PET composition is obtained. The high heat-resistant fire-retardant reinforced PET composition has excellent integrated performances, a fast crystallization rate, a short shaping period, a high thermal deformation temperature, good flame resistance reaching to the UL94V-0 standard, and excellent mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of modification of engineering plastics, and in particular relates to a high heat-resistant and flame-retardant reinforced PET composition and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (PET) is a highly crystalline polymer with a smooth and glossy surface. It has excellent physical and mechanical properties in a wide temperature range. The long-term use temperature can reach 120 ° C. It has excellent electrical insulation. Even at high temperature and high frequency, its electrical properties are still good, but its corona resistance is poor. Creep resistance, fatigue resistance, friction resistance and dimensional stability are all very good. Advantages of PET as a packaging material: ①Good mechanical properties, impact strength is 3-5 times that of other films, and good folding resistance; ②Oil resistance, fat resistance, dilute acid, dilute alkali resistance, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L23/08C08L25/06C08K13/06C08K5/098C08K3/34C08K3/26C08K9/00C08K7/14B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 邝清林王立锋孙春红
Owner QINGDAO HAIER NEW MATERIAL R&D CO LTD
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