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Floating-fiber-free glass fiber reinforced nylon composite material and preparation method thereof

A technology of nylon composite material and non-floating fiber, which is applied in the field of non-floating fiber glass fiber reinforced nylon composite material and its preparation, to achieve the effect of wide source, complete dimensional stability and good appearance

Inactive Publication Date: 2022-03-18
ANHUI ZHONGDING RUBBER PLASTIC PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The obtained material solves the technical problem that it is difficult to balance good appearance and high mechanical performance in the prior art

Method used

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  • Floating-fiber-free glass fiber reinforced nylon composite material and preparation method thereof
  • Floating-fiber-free glass fiber reinforced nylon composite material and preparation method thereof
  • Floating-fiber-free glass fiber reinforced nylon composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This embodiment provides a modified glass fiber, which is made by the following steps:

[0034] Step A1. Mix 0.1mol of p-aminobenzoic acid, 0.3mol of thionyl chloride and 130mL of ethyl acetate, heat up to 58°C under stirring, and keep the temperature for 2 hours. After the reaction, remove the ethyl acetate by distillation under reduced pressure to obtain an intermediate product 1;

[0035] Step A2, mix 0.1mol KH-550 and 50mL chloroform, cool down to 0°C in an ice-water bath, add dropwise 100mL chloroform solution of intermediate product 1, keep the temperature at 0°C throughout the dropping process, finish the dropping within 1 hour, and raise the temperature to 19 ℃, stirring and reacting for 2 hours, after the reaction, chloroform was distilled off under reduced pressure to obtain intermediate product 2, and the chloroform solution of intermediate product 1 was prepared by mixing intermediate product 1 and chloroform according to 0.1mol:100mL;

[0036] Step A3. Mix...

Embodiment 2

[0039] This embodiment provides a modified glass fiber, which is made by the following steps:

[0040] Step A1. Mix 0.1mol of p-aminobenzoic acid, 0.3mol of thionyl chloride and 140mL of ethyl acetate, heat up to 60°C under stirring, and keep the temperature for 2.5h. After the reaction, remove the ethyl acetate by distillation under reduced pressure to obtain intermediate Product 1;

[0041] Step A2, mix 0.1mol KH-550 and 60mL chloroform, cool down to 2°C in an ice-water bath, add dropwise 100mL chloroform solution of intermediate product 1, keep the temperature at 2°C throughout the dropping process, finish the dropwise addition within 1 hour, and raise the temperature to 20°C ℃, stirring and reacting for 2 hours, after the reaction, chloroform was distilled off under reduced pressure to obtain intermediate product 2, and the chloroform solution of intermediate product 1 was prepared by mixing intermediate product 1 and chloroform according to 0.1mol:100mL;

[0042] Step A3...

Embodiment 3

[0045] This embodiment provides a modified glass fiber, which is made by the following steps:

[0046] Step A1. Mix 0.1mol of p-aminobenzoic acid, 0.3mol of thionyl chloride and 150mL of ethyl acetate, heat up to 62°C under stirring, and keep the temperature for 3 hours. After the reaction, remove the ethyl acetate by distillation under reduced pressure to obtain an intermediate product 1;

[0047] Step A2, mix 0.1mol KH-550 and 70mL chloroform, cool down to 5°C in an ice-water bath, add dropwise 100mL chloroform solution of intermediate product 1, keep the temperature at 5°C throughout the dropping process, finish the dropwise addition within 1 hour, and raise the temperature to 21 ℃, stirring and reacting for 2 hours, after the reaction, chloroform was distilled off under reduced pressure to obtain intermediate product 2, and the chloroform solution of intermediate product 1 was prepared by mixing intermediate product 1 and chloroform according to 0.1mol:100mL;

[0048] Ste...

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Abstract

The invention relates to a floating-fiber-free glass fiber reinforced nylon composite material and a preparation method thereof, and belongs to the field of engineering plastic composite materials and preparation processes thereof, the floating-fiber-free glass fiber reinforced nylon composite material comprises the following raw materials by weight: 40-90 parts of matrix polyamide resin, 5-55 parts of modified glass fiber, 0-40 parts of a flexibilizer, 0.1-1.5 parts of a heat stabilizer, and 0-5 parts of a lubrication dispersant. The glass fiber reinforced polyamide composite material is prepared by processing the matrix polyamide resin, the glass fiber and other additives according to a certain proportion, so that the two-phase interface bonding of the glass fiber and polyamide is good, the glass fiber on the surface of a product is not exposed, the surface smoothness of the product is good, and the material has the characteristics of higher tensile strength, higher bending modulus and better notch impact strength. The composite material has wide application prospects in the fields requiring high strength, high modulus and high dimensional stability, such as automobile engine covers, electric cutting machines, trunk accessories, pump impellers, cooling fans, precise instrument bottom shells, camera parts and the like.

Description

technical field [0001] The invention relates to a non-floating fiber glass fiber reinforced nylon composite material and a preparation method thereof, in particular to a glass fiber reinforced nylon composite material suitable for automotive functional parts and a preparation method thereof. Background technique [0002] Polyamide, commonly known as nylon, has the characteristics of high strength, wear resistance, self-lubrication and chemical resistance, low friction coefficient and wide service temperature range. It is an engineering plastic widely used in industry at present. However, its impact strength is low, it is sensitive to temperature and humidity, and its high hygroscopicity leads to poor dimensional stability. [0003] The main modification methods of nylon can be divided into copolymerization modification, blending modification and filling modification. Adding reinforcing agents (such as glass fiber, nano-silica, carbon fiber and graphite fiber, etc.) to nylon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L51/06C08L91/06C08K9/06C08K9/02C08K7/14C08J5/08
CPCC08J5/08C08J2377/06C08J2451/06C08J2491/06C08K9/06C08K9/02C08K7/14
Inventor 龚梦晴吴章柱王江玉程建刚阮宏胜
Owner ANHUI ZHONGDING RUBBER PLASTIC PROD CO LTD
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