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Modified polyester material and composite sandwich panel made from it and preparation method thereof

A technology for modifying polyester and sandwich panels, applied in chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the problems of poor impact resistance, limited use range, decreased toughness, etc. The effect of tear strength, strong dimensional stability advantages, toughness and tear resistance

Active Publication Date: 2022-03-29
ZHUHAI HUARUN PACKAGING MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] PET has good mechanical properties, and the long-term use temperature can reach 120°C. PET also has insulation, creep resistance, fatigue resistance, friction resistance and dimensional stability. Therefore, polyester composite sandwich panels made from it are widely used. It is favored by people, but its impact resistance is poor, it is easy to crystallize during hot pressing, resulting in a significant decrease in toughness, and the scope of use is limited. Therefore, how to reduce the crystallization ability of polyester is to improve the application range of composite sandwich panels. one of the effective ways

Method used

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  • Modified polyester material and composite sandwich panel made from it and preparation method thereof
  • Modified polyester material and composite sandwich panel made from it and preparation method thereof
  • Modified polyester material and composite sandwich panel made from it and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] (1) Eliminate static electricity and heat: Place the continuous fiber with a glass fiber content of 50wt% on the roller of the spinning frame, then let the continuous glass fiber pass through the pre-tension roller, then pass through the static elimination device, and then pass through the heating oven, the oven temperature Set to 80°C.

[0059] (2) Impregnation: The raw materials of the modified polyester material are fully dried before the twin-screw honey refining, and then PET polyester: polyethylene terephthalate-neopentyl glycol ester: coupling Agent KH-560: high temperature resistant lubricant TA-401: antioxidant 1010: flame retardant polybrominated styrene: colorant blueness agent: toughening agent AX8900=40:40:0.3:0.8:0.1:14: The 0.0001:1 material is accurately weighed and mixed evenly before feeding into the twin-screw extruder. The rotational speed of the twin-screw extruder was adjusted to 200 rpm, the degree of vacuum was adjusted to 99KPa, and the tempera...

Embodiment 2

[0065] (1) Eliminate static electricity and heat: Place the continuous fiber with a glass fiber content of 50wt% on the roller of the spinning frame, then let the continuous glass fiber pass through the pre-tension roller, then pass through the static elimination device, and then pass through the heating oven, the oven temperature Set to 80°C.

[0066] (2) Impregnation: The raw materials of the modified polyester material are fully dried before the twin-screw honey refining, and then PET polyester: polyethylene terephthalate-neopentyl glycol ester: coupling Agent KH-560: high temperature resistant lubricant TA-401: antioxidant 1010: flame retardant polybrominated styrene: colorant blueness agent: toughening agent AX8900=20:60:0.3:0.8:0.1:14: The 0.0001:1 material is accurately weighed and mixed evenly before feeding into the twin-screw extruder. The rotational speed of the twin-screw extruder was adjusted to 200 rpm, the degree of vacuum was adjusted to 99KPa, and the tempera...

Embodiment 3

[0072] (1) Eliminate static electricity and heat: Place the continuous fiber with a glass fiber content of 65wt% on the roller of the spinning frame, then let the continuous glass fiber pass through the pre-tension roller, then pass through the static elimination device, and then pass through the heating oven, the oven temperature Set to 80°C.

[0073] (2) Impregnation: fully dry the raw materials of the modified polyester material before twin-screw honey refining, and then make polytrimethylene terephthalate: polyethylene terephthalate-neopentyl glycol according to the weight ratio Ester: Coupling agent KH-560: High temperature resistant lubricant TA-401: Antioxidant 1010: Flame retardant Polybrominated styrene: Colorant blueness agent: Toughener AX8900=32:48:0.3:0.8: The materials of 0.1:14:0.0001:1 are accurately weighed and mixed evenly, and then fed into the twin-screw extruder. The rotational speed of the twin-screw extruder was adjusted to 200 rpm, the degree of vacuum...

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Abstract

The invention discloses a modified polyester material, which comprises the following raw materials: polyester and coupling agent; the polyester is a mixture of type A polyester and type B polyester; the Class A polyester is crystalline polyester, and the class B polyester is non-crystalline polyester; the glass transition temperature of the modified polyester material is 67-81°C, the melting point is 210-265°C, and the crystallization temperature It is 120-220°C. The beneficial effect of the present invention is: the continuous fiber reinforced polyester composite sandwich panel of the present invention is made of continuous fiber reinforced modified polyester material to obtain the upper skin layer and the lower skin layer, and the continuous fiber or continuous fiber products are infiltrated with modified polyester to obtain The polyester crystallization ability of the continuous fiber reinforced modified polyester material is reduced, and the polyester material with reduced crystallization ability has stronger toughness and tear resistance, that is, the continuous fiber reinforced polyester composite sandwich panel of the present invention It has stronger mechanical properties and dimensional stability advantages.

Description

technical field [0001] The invention belongs to the technical field of composite sandwich panel preparation, and in particular relates to a modified polyester material, a preparation method thereof, and an application in composite sandwich panels. Background technique [0002] Sandwich panels are boards made of high-strength surface materials and core materials with light bulk density and low strength. They have the advantages of high strength, light weight, fire resistance, thermal insulation, and convenient installation. , household appliances, construction engineering and many other fields have a wide range of uses. [0003] Polyester composite sandwich panels have attracted more and more attention because of their higher rigidity, mechanical strength and impact strength. Polyester is a general term for polymers obtained by polycondensation of polyols and polyacids. Common polyesters include polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT), and pol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L25/18C08K13/04C08K7/14C08K5/5435C08K5/134C08J5/04B32B27/06B32B27/36B32B3/12
CPCC08L67/02C08J5/043B32B27/08B32B27/36B32B3/12C08L2205/03C08L2205/025C08J2367/02C08J2467/02B32B2262/0261B32B2262/0253B32B2262/106B32B2307/5825B32B2307/734C08L25/18C08K13/04C08K7/14C08K5/5435C08K5/1345
Inventor 方明李亚飞葛鑫鑫胡广君
Owner ZHUHAI HUARUN PACKAGING MATERIALS
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