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Halogen-free flame retardant glass fiber reinforced polyester composite and preparation method thereof

A flame-retardant glass fiber and polyester composite material technology, applied in the field of halogen-free flame-retardant glass fiber reinforced polyester composite materials, can solve the problem of high environmental hazards of halogen-containing flame retardants, high addition of inorganic flame retardants, and material Poor physical properties and other problems, to overcome the environmental hazards, improve compatibility, and good physical properties

Inactive Publication Date: 2011-09-07
SUZHOU INST FOR ADVANCED STUDY USTC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies in the existing flame retardant modification technology of glass fiber reinforced polyester composite materials, such as high environmental hazards of halogen-containing flame retardants, high addition of inorganic flame retardants, poor material physical properties, poor weather resistance, etc., the present invention The purpose is to provide a halogen-free flame-retardant glass fiber reinforced polyester composite material

Method used

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  • Halogen-free flame retardant glass fiber reinforced polyester composite and preparation method thereof
  • Halogen-free flame retardant glass fiber reinforced polyester composite and preparation method thereof
  • Halogen-free flame retardant glass fiber reinforced polyester composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Prepare the materials according to the formula in the following table, and dry the polybutylene terephthalate (PBT) masterbatch, glass fiber, aluminum hypophosphite or microencapsulated aluminum hypophosphite, melamine cyanurate or microencapsulated Melamine cyanurate and polycarbonate are mixed evenly, heated to 230-240°C in a twin-screw extruder, melted and blended, then extruded, drawn, cooled, pelletized and dried to obtain this product Invented glass fiber reinforced polybutylene terephthalate halogen-free flame retardant composite material. Then the sample strips for oxygen index test, vertical combustion test and tensile strength test are injected by the injection molding machine, and the combustion performance and mechanical performance test are carried out. The oxygen index test is carried out according to the international standard ASTM D2863, the vertical burning test is carried out according to the international standard ASTM D2863, and the tensile strength ...

Embodiment 2

[0033] Prepare the materials according to the formula in the table below, dry polybutylene terephthalate (PBT) masterbatch, glass fiber, microencapsulated aluminum hypophosphite, microencapsulated melamine polyphosphate, polycarbonate, Mongolian Remove soil and mix evenly, heat to 230-240°C in a twin-screw extruder, melt and blend, then extrude, draw, cool, pelletize and dry to obtain the glass fiber reinforced poly Butylene phthalate halogen-free flame retardant composite material. Then the sample strips for oxygen index test, vertical combustion test and tensile strength test are injected by the injection molding machine, and the combustion performance and mechanical performance test are carried out. The oxygen index test is carried out according to the international standard ASTM D2863, and the vertical combustion test is carried out according to the international standard ASTM D2863.

[0034]

[0035]

[0036] It can be seen from the above table that the use of the fl...

Embodiment 3

[0039] Prepare the material according to the formula in the following table, and extrude the dried polyethylene terephthalate (PET) masterbatch, glass fiber, aluminum hypophosphite or microencapsulated aluminum hypophosphite, cerium oxide, Heating in the machine to 265-275°C, melt blending, extrusion, drawing, cooling, pelletizing and drying to obtain the glass fiber reinforced polyethylene terephthalate composite material of the present invention; It is also possible to add melamine cyanurate or microencapsulated melamine cyanurate to the raw material before mixing. Then the sample strips for oxygen index test, vertical combustion test and tensile strength test are injected by the injection molding machine, and the combustion performance and mechanical performance test are carried out. The oxygen index test is carried out according to the international standard ASTM D2863, and the vertical combustion test is carried out according to the international standard ASTMD2863.

[0...

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Abstract

The invention discloses a halogen-free flame retardant glass fiber reinforced polyester composite and a preparation method thereof. The invention is characterized in that the preparation method of the composite comprises the following steps: mixing polyester, glass fiber, microencapsulated metal hypophosphite and microencapsulated nitrogen-containing flame retardant evenly, heating to 230-275 DEG C, and performing melt blending; and extruding, pulling, cooling, granulating and drying to obtain the composite, wherein the weight percentages of the polyester, glass fiber, microencapsulated metal hypophosphite and microencapsulated nitrogen-containing flame retardant to the total weight of the composite are 40-60%, 25-30%, 10-20% and 5-10% respectively. The halogen-free flame retardant glass fiber reinforced polyester composite has both good flame resistance and physical properties; the defects of the existing reinforced polyester material modification technology that the halogen-containing flame retardant inflicts great damage on the environment, the additional amount of the inorganic flame retardant is great and the material has poor physical properties and weather resistance can be overcome; and the composite has wide application prospect.

Description

technical field [0001] The invention belongs to a composite material with flame-retardant effect, in particular to a halogen-free flame-retardant glass fiber reinforced polyester composite material. Background technique [0002] With the continuous development and needs of industrial production, polymer material modification products occupy an increasingly important position in the polymer material industry. The reinforced material physically filled with glass fiber (referred to as glass fiber) in the modification of polymer materials has better electrical properties, dimensional stability, heat resistance and higher tensile strength. Among many polymer composite materials, glass fiber reinforced polyester composite materials are a kind of polymer modified materials that are widely used. Polyester is a general term for polymer compounds formed by polycondensation of diols or polyols and dibasic acids or polybasic acids, among which polyethylene terephthalate (PET) and polyb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08L67/02C08K13/06C08K9/10C08K3/32C08K5/3492C08K7/14
Inventor 胡源杨伟宋磊
Owner SUZHOU INST FOR ADVANCED STUDY USTC
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