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Reinforced polyethylene glycol terephthalate-modified material and preparation method thereof

A technology for polyethylene terephthalate and modified materials, which is applied in the field of reinforced polyethylene terephthalate modified materials and its preparation, and can solve the problems of poor corona resistance, poor low temperature resistance, Slow crystallization speed and other problems, to achieve the effect of reducing the cost of use, good low temperature resistance and creep resistance

Inactive Publication Date: 2012-11-14
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its modified material has excellent mechanical properties in a wide temperature range, and its long-term use temperature can reach 140 ° C. It has excellent electrical insulation. Even at high temperature and high frequency, its electrical and mechanical properties are still good. Denaturation, fatigue resistance, friction resistance, excellent dimensional stability, high heat distortion temperature, but poor corona resistance, slow crystallization speed, poor low temperature resistance
At present, representative brands of PET such as DuPont's FR-530 have the disadvantages of crystallization speed not fast enough and accompanied by cold crystallization through DSC test spectrum analysis.

Method used

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  • Reinforced polyethylene glycol terephthalate-modified material and preparation method thereof
  • Reinforced polyethylene glycol terephthalate-modified material and preparation method thereof
  • Reinforced polyethylene glycol terephthalate-modified material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1 is made by the raw material of following parts by weight:

[0037] Component 1 polyethylene terephthalate 100 parts, component 2 glass fiber 30 parts, component 3 toughening agent 6 parts, component 4 antioxidant 0.5 part, component 5 compound nucleating agent 3 Parts, Component 6 Elastomer SEBS 10 parts.

[0038] Preparation method: Weigh the above raw materials, mix the raw materials except glass fiber in a high-speed mixer for 10-15 minutes, then melt through a twin-screw extruder, add glass fiber with side feed, extrude and granulate. The temperature of each section is as follows: the temperature of the first zone is 250-260°C, the temperature of the second zone is 255-270°C, the temperature of the third zone is 255-275°C, the temperature of the fourth zone is 250-265°C, and the fifth zone is 250-260°C. The conveying time of the material in the screw is 1 to 5 minutes, and the pressure is 10 to 20 MPa.

Embodiment 2

[0039] Embodiment 2 is made by the raw material of following parts by weight:

[0040] Component 1 polyethylene terephthalate 100 parts, component 2 glass fiber 40 parts, component 3 toughening agent 8 parts, component 4 antioxidant 0.8 part, component 5 compound nucleating agent 4 Parts, Component 6 Elastomer SEBS 12 parts.

[0041] The preparation method is the same as in Example 1.

Embodiment 3

[0042] Embodiment 3 is made by the raw material of following parts by weight:

[0043] Component 1 polyethylene terephthalate 100 parts, component 2 glass fiber 40 parts, component 3 toughening agent 9 parts, component 4 antioxidant 0.8 part, component 5 compound nucleating agent 5 Parts, Component 6 Elastomer SEBS 13 parts.

[0044] The preparation method is the same as in Example 1.

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Abstract

The invention discloses a reinforced polyethylene glycol terephthalate-modified material and a preparation method thereof. The reinforced polyethylene glycol terephthalate-modified material comprises the following components in part by weight: 100 parts of polyethylene glycol terephthalate, 30 to 50 parts of glass fibers, 6 to 10 parts of flexibilizer, 0.5 to 1 part of antioxygen, 3 to 6 parts ofcompound nucleating agent and 10 to 15 parts of elastomer SEBS. The reinforced polyethylene glycol terephthalate-modified material has high low temperature resistance and creep resistance and can be used in place of the conventional thermoplastic ethylene-propylene diene methylene dynamically vulcanized elastomer to make frame seals and other parts and reduce use cost of the materials. A new application field of the modifying polyethylene glycol terephthalate is opened, the conventional thermoplastic ethylene-propylene diene methylene dynamically vulcanized elastomer can be replaced by the material, and the use cost of the material is reduced greatly.

Description

[technical field] [0001] The invention relates to the technical field of polymer materials, in particular to a reinforced polyethylene terephthalate modified material and a preparation method thereof. [Background technique] [0002] Polyethylene terephthalate (PET) is a polyester resin with high crystallinity and excellent physical and chemical properties. Its modified material has excellent mechanical properties in a wide temperature range, and its long-term use temperature can reach 140 ° C. It has excellent electrical insulation. Even at high temperature and high frequency, its electrical and mechanical properties are still good. Denaturation, fatigue resistance, friction resistance, excellent dimensional stability, high heat distortion temperature, but its corona resistance is poor, crystallization speed is slow, and low temperature resistance is poor. At present, representative brands of PET, such as DuPont's FR-530, have the disadvantages of crystallization speed not ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L53/02C08L23/08C08L33/10C08L33/14C08K13/04C08K7/14C08K13/06C08K9/06C08K3/34C08K3/26C08K5/098B29B9/06B29C47/92B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C48/9185B29C2948/92514B29C2948/92561B29C2948/92895
Inventor 徐东贺永孙航
Owner SHENZHEN KEJU NEW MATERIAL