Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of high damping polyimide fiber reinforced composite material

A technology of polyimide fibers and reinforced composite materials, which is applied in the direction of fiber chemical characteristics, single-component synthetic polymer rayon, textiles and papermaking, and can solve the problems of interlayer shear strength and flexural modulus drop, etc. Achieve the effect of high cost performance, broaden the application field and improve the impact performance

Active Publication Date: 2017-01-04
CHANGSHU WANBAO NEW MATERIAL SCI & TECHCO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of using this approach to improve the damping performance of composite materials is that while the damping performance of composite materials is improved, its mechanical properties, especially the interlaminar shear strength and flexural modulus, decrease significantly.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Add 2% glass fiber and 1.9% graphite flakes to 91.3% natural rubber, then add 3% 6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline, in Kneading was carried out at 40°C.

[0025] 2) After the tablet is released, add 1.8% dicumyl peroxide into the blend and mix evenly at a temperature of 120°C.

[0026] 3) Join the twin-screw extruder to melt and extrude, the temperature is 95°C, the aspect ratio of the twin-screw is 56, and the speed of the main engine is 600rmp;

[0027] 4) Put the rubber material into the mold for molding at a temperature of 110°C.

Embodiment 2

[0029] 1) Add 1.9% graphite flakes to 91.3% natural rubber, then add 3% 6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline, and mix at 40°C .

[0030] 2) After the tablet is released, add 1.8% dicumyl peroxide into the blend and mix evenly at a temperature of 120°C.

[0031] 3) Put the material obtained in step 2) into a twin-screw extruder, and add 2% polyimide fiber at the same time, melt and extrude at a temperature of 95°C, the twin-screw aspect ratio is 56, and the host speed is 600rmp;

[0032] 4) Put the rubber material into the mold for molding at a temperature of 110°C.

Embodiment 3

[0034] 1) Add 0.9% graphite flakes to 91.2% natural rubber, then add 3% N-isopropyl-N’-phenyl-p-phenylenediamine, and knead at 40°C.

[0035] 2) After the tablet is released, add 1.9% bis-tert-butyl peroxide cumene into the blend and knead evenly at a temperature of 120°C.

[0036] 3) Put the material obtained in step 2) into a twin-screw extruder, and add 3% polyimide fiber at the same time, melt and extrude at a temperature of 95°C, the twin-screw aspect ratio is 56, and the host speed is 600rmp;

[0037] 4) Put the rubber material into the mold for molding at a temperature of 140°C.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a high-damping polyimide fiber-reinforced composite material, which comprises the following steps: first adding a vulcanizing agent into natural rubber, then adding a damping agent and an anti-aging agent, and kneading at 40-100°C ; Then vulcanize at 140-170°C for 10-30min after the sheet is released, heat up to 150-200°C within 10-40min, keep warm for 1-4h and then naturally cool to room temperature; then add the material obtained in step 2 into the twin-screw Extruder, while adding polyimide fiber to the feeding port, melt extrusion at a temperature of 180-240°C to obtain a high-damping polyimide fiber-reinforced compound; finally put the compound obtained in step 3 into the mold Molding in high damping polyimide fiber reinforced composite material. The invention adopts polyimide fiber-reinforced high-damping rubber composite material, which overcomes the disadvantage that the mechanical properties of the damping composite material drop significantly due to resin damping modification, the damping loss factor of the material reaches more than 0.05, and the damping ratio of the material Reach more than 16%.

Description

technical field [0001] The invention relates to a preparation method of a high-damping polyimide fiber-reinforced composite material, which belongs to the field of polymer materials. Background technique [0002] High-damping composite material is a fiber-reinforced resin composite material with good damping performance and certain mechanical properties. Functional integration. [0003] A kind of damping composite material is disclosed abroad. The damping performance of the composite material is improved through the application of damping modified resin. Nylon" with fiberglass reinforcement. The damping composite material produced by the above method has relatively good damping performance, but the mechanical performance drops very seriously and cannot be used as a structural material. Some domestic scholars use carboxylated nitrile rubber to modify epoxy to improve the damping performance of the composite material. Adding 18wt% carboxylated nitrile rubber can double the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/00C08L79/08C08J5/04C08K5/14C08K3/04D01F6/74
Inventor 陆骏陈逵
Owner CHANGSHU WANBAO NEW MATERIAL SCI & TECHCO LTD