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Nano composite flame-retardant reinforced polyester engineering plastic and preparation method thereof

A nano-composite and engineering plastic technology, which is applied in fibrous fillers, dyed organosilicon compound treatment, dyed low-molecular-weight organic compound treatment, etc. It can improve the processing performance, excellent flame retardant performance and physical properties, and improve the overall performance.

Active Publication Date: 2010-12-29
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a nano-composite flame-retardant reinforced polyester engineering plastic and its preparation method to overcome the environmental hazards of halogen-containing flame retardants and the addition of inorganic flame retardants in the existing polyester reinforcement material modification technology. Disadvantages such as high quantity and poor physical properties of materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Prepare materials according to each formula of proportioning 1 to proportioning 4 given in table 1 respectively, dry good polybutylene terephthalate (PBT) masterbatch, aluminum hypophosphite, melamine cyanurate or Mix melamine polyphosphate and cetylpyridinium chloride (CPC) modified nano-montmorillonite evenly, heat to 230-240°C in a twin-screw extruder, melt and blend, and then extrude and draw , cooling, pelletizing and drying to obtain the polybutylene terephthalate halogen-free flame-retardant composite material of the present invention.

[0018] The sample strips used for oxygen index test, vertical combustion test and tensile strength test are injected by injection molding machine for combustion performance and mechanical performance test. 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 test is carried out ...

Embodiment 2

[0025] Each formula of the proportioning 5 to the proportioning 8 given in the following table 2 is prepared respectively, and the polybutylene terephthalate (PBT) masterbatch, glass fiber, aluminum hypophosphite, melamine cyanide Urate and cetylpyridinium chloride (CPC) modified nano-montmorillonite are mixed uniformly, heated to 230-240°C in a twin-screw extruder, melted and blended, and then extruded, drawn, Cooling, pelletizing and drying can obtain the glass fiber reinforced polybutylene terephthalate composite material of the present invention.

[0026] 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 st...

Embodiment 3

[0032]Each formula of proportioning 9 to proportioning 12 given in the following table 3 is prepared respectively, and the polyethylene terephthalate (PET) masterbatch that will dry, aluminum hypophosphite, melamine cyanurate , cetylpyridinium chloride (CPC) modified nano-montmorillonite mixed uniformly, heated to 265-275 ° C in a twin-screw extruder, melted and blended, and then extruded, drawn, cooled, cut pellets and drying to obtain the glass fiber reinforced polyethylene terephthalate composite material of the present invention. Then the sample strips for oxygen index test, vertical combustion test and tensile strength test are injected through 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 test is carried...

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PUM

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Abstract

The invention discloses a nano composite flame-retardant reinforced polyester engineering plastic and a preparation method thereof. The preparation method is characterized by comprising the following steps of: mixing 45 to 80 percent of polyester, 5 to 20 percent of metal hypophosphite, 3 to 15 percent of nitrogen-containing flame retardant and 0.5 to 5 percent of nano modified additive uniformlybased on the percentage of the total mass of the composite material, heating the mixture to be between 230 and 275 DEG C, and performing melting, blending, extrusion, bracing, cooling, granulation and drying on the mixture. The obtained nano composite flame-retardant reinforced polyester engineering plastic has good flame-retardant property and physical property, overcomes the defects of high environmental hazard of halogen-containing flame retardant, high addition of organic flame retardant, poor physical property of materials and the like in the conventional polyester reinforced material modification technology, and has strong application prospect.

Description

technical field [0001] The invention belongs to the technical field of nanocomposite flame retardant reinforced polyester engineering plastics, in particular to a flame retardant reinforced polyester nanocomposite material containing polyester, reinforcing agent, metal hypophosphite, nitrogen-containing flame retardant and modified nano additives and its Preparation. Background technique [0002] 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 polybutylene terephthalate ( PBT) are the two most widely used polymer materials in the polyester family. With the continuous development and needs of industrial production, polymer material modified products occupy an increasingly important position in the polymer material industry. The reinforcement material physically filled with glass fiber (referred to as glass fiber) in the modification of poly...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K13/06C08K3/32C08K5/3492C08K7/14C08K3/38C09C1/28C09C1/00C09C3/08C09C3/12
Inventor 胡源杨伟宋磊
Owner UNIV OF SCI & TECH OF CHINA
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