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Flame retardant reinforced polyphthalamide composite material and preparation method thereof

A technology of polyphthalamide and composite materials, which is applied in the field of flame-retardant reinforced polyphthalamide composite materials and its preparation, can solve the problems of discoloration of light-colored products, poor processing fluidity, and high processing technology requirements, and achieve The production and preparation process is simple, the strength is improved, and the operation process is simple and easy.

Inactive Publication Date: 2010-09-15
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, glass fiber reinforced flame-retardant PPA composite materials have poor processing fluidity and high requirements on processing technology. High-temperature, high-shear processing technology is often required, which easily leads to the decomposition of the flame-retardant system, the degradation of material properties, and the discoloration of light-colored products. Great wear and tear on processing equipment, which limits the application of glass fiber reinforced flame retardant PPA composites

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Polyphthalamide (PPA A-1000) 56.8 parts (parts by weight, the same below), TiconaVectra type thermotropic liquid crystal polymer 5 parts, glass fiber FT756X 20 parts, brominated polystyrene (PBS 64HW) 13 parts , 4 parts of antimony trioxide, 0.2 parts of Irganox 1076, 0.2 parts of Irganox 1680, 0.5 parts of polysiloxane, and 0.3 parts of PETS.

[0030] Preparation method: weigh PPA A-1000, thermotropic liquid crystal polymer, PBS 64HW, antimony trioxide, Irganox 1076, Irganox 168, polysiloxane, PETS, and mix them in a medium-speed mixer for 15 minutes. 20 parts of glass fibers are added by side feeding, melt blended, extruded and granulated to form a composite material. The temperature of each section is: 280°C in the first zone, 290°C in the second zone, 300°C in the third zone, 300°C in the fourth zone, 290°C in the fifth zone, the residence time is 3min, and the pressure is 16MPa.

Embodiment 2

[0032] 43.9 parts of PPA A-1000 (parts by weight, the same below), 10 parts of Ticona Vectra type thermotropic liquid crystal polymer, 11.8 parts of PBS 64HW, 3.7 parts of antimony trioxide, 30 parts of glass fiber FT756X, 0.1 part of Cyanox 1790, 0.5 part of polysiloxane.

[0033] Preparation method: Weigh PPA A-1000, Vectra type thermotropic liquid crystal polymer, PBS 64HW, antimony trioxide, Cyanox 1790, and polysiloxane, and mix them in a medium-speed mixer for 15 minutes. Mix 30 One part of glass fiber is added by side feeding, melted and blended, extruded and granulated to form a composite material. The temperature of each section is: 280°C in the first zone, 290°C in the second zone, 300°C in the third zone, 300°C in the fourth zone, 290°C in the fifth zone, the residence time is 3min, and the pressure is 16MPa.

Embodiment 3

[0035] PPA A-1000 34.4 parts (parts by weight, the same below), Dupont Zenite type thermotropic liquid crystal polymer 15 parts, PBS 64HW 10.5 parts, antimony trioxide 3.5 parts, glass fiber FT756X 35 parts, Irganox 1098 0.3 parts, Irganox 168 0.3 parts, polysiloxane 0.8 parts, PETS 0.2 parts.

[0036] Preparation method: Weigh PPA A-1000, Zenite type thermotropic liquid crystal polymer, PBS 64HW, antimony trioxide, Irganox 1098, Irganox 168, polysiloxane, PETS, and mix them in a medium-speed mixer In 15 minutes, 35 parts of glass fibers were added by side feeding, melted and blended, extruded and granulated to form a composite material. The temperature of each section is: 275°C in the first zone, 285°C in the second zone, 300°C in the third zone, 290°C in the fourth zone, 290°C in the fifth zone, the residence time is 3min, and the pressure is 15MPa.

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Abstract

The invention discloses a flame retardant reinforced polyphthalamide composite material and a preparation method thereof. The flame retardant reinforced polyphthalamide composite material comprises the following raw materials in parts by weight: 22.1-55.8 parts of polyphthalamide, 1-18 parts of thermotriopic liquid crystalline polymer, 20-45 parts of glass fibers, 14-18 parts of flame retardant, 0.1-0.6 part of antioxidant and 0.3-1 part of lubricant. By introducing TLCP (Thermotriopic Liquid Crystalline Polymer) into a glass fiber reinforced flame retardant PPA (Phenlypropanolamine) system, the flame retardant reinforced polyphthalamide composite material can lower the viscosity of a blend melt, improve the fluidity of the composite materials, enhance the stability of the flame retardant system, the comprehensive properties of the materials and the moulding processing performance of the flame retardant system, save the moulding processing energy consumption, lower the product cost and has wider application prospect in the electronic and electrical field, the mechanical engineering field and the like.

Description

[technical field] [0001] The invention relates to the technical field of polymer materials, in particular to a flame-retardant reinforced polyphthalamide composite material and a preparation method thereof. [Background technique] [0002] Polyphthalamide (PPA) is a semi-aromatic nylon made of phthalic acid, and is a semi-crystalline thermoplastic functional material. Glass fiber reinforced PPA composite material has excellent comprehensive physical properties, excellent high temperature resistance, high rigidity, high strength, excellent dimensional accuracy and stability and low warpage, good chemical resistance, and can be used in heat, electricity, Both physical and chemical resistance have good performance. Glass-reinforced PPA composites modified by flame retardancy can have excellent flame-retardant properties, which makes glass fiber-reinforced flame-retardant PPA composites have broad application prospects in the fields of electronics, electrical, and mechanical eng...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L67/00C08K13/06C08K9/06C08K9/04C08K7/14C08K3/22B29C47/92B29C48/92
CPCB29C48/04
Inventor 徐东徐永谢建达
Owner SHENZHEN KEJU NEW MATERIAL
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