Fiber-reinforced polydicyclopentadiene composite material and preparation method thereof

A technology of polydicyclopentadiene and dicyclopentadiene is applied in the field of preparation of the composite material, and can solve problems such as high requirements and unsatisfactory strength, and achieve the effects of improving impact strength, being easy to implement and simple to operate.

Active Publication Date: 2012-09-26
NORTH HUAJIN CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although polydicyclopentadiene has good comprehensive properties, its strength cannot meet the higher requirements in some specific engineering fields.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The fiber-reinforced polydicyclopentadiene composite material of this embodiment is obtained by blending and polymerizing the following raw materials in weight percentage: 98% polydicyclopentadiene and 2% carbon fiber precursors, and the length of the carbon fiber precursors is 4mm.

[0028] The preparation method of carbon fiber precursor reinforced polydicyclopentadiene composite material of the present invention comprises the following steps:

[0029] (1) Under the condition of 45°C, 2% by weight of carbon fiber precursors is uniformly dispersed in 98% by weight of dicyclopentadiene through a homogenizer to obtain dicyclopentadiene with carbon fiber precursors uniformly dispersed Mix the solution, degas it with a vacuum pump for 25 minutes, and then fill it with nitrogen for protection;

[0030] (2) under nitrogen protection, add 25 kilograms of dicyclopentadiene mixtures in which the carbon fiber precursors are evenly dispersed in tank A and tank B of the reaction i...

Embodiment 2

[0034] The fiber-reinforced polydicyclopentadiene composite material of this embodiment is formed by blending and polymerizing raw materials in the following percentages by weight: 95% polydicyclopentadiene and 5% aramid fiber precursors, and the length of the aramid fiber precursors is 2mm.

[0035] The preparation method of the aramid fiber precursor reinforced polydicyclopentadiene composite material of the present invention comprises the following steps:

[0036] (1) Under the condition of 45°C, 5% by weight of aramid fiber precursors is uniformly dispersed in 95% by weight of dicyclopentadiene through a homogenizer to obtain aramid fiber precursors uniformly dispersed Dicyclopentadiene mixed solution, degassed by a vacuum pump for 25 minutes, and then filled with nitrogen for protection;

[0037] (2) under nitrogen protection, add 25 kilograms of dicyclopentadiene mixed liquid that the aramid fiber precursor is evenly dispersed in the A tank and the B tank of the reactio...

Embodiment 3

[0041] The fiber-reinforced polydicyclopentadiene composite material of this embodiment is made up of the following components by weight percentage: 99.5% polydicyclopentadiene and 0.5% surface coupling modified carbon fiber precursor, wherein the length of the carbon fiber precursor is 6mm .

[0042] The preparation method of the surface coupling modified carbon fiber precursor reinforced polydicyclopentadiene composite material of the present invention comprises the following steps:

[0043] (1) Add 1 gram of carbon fiber precursor to 100 grams of KH-570 silane coupling agent ethanol solution with a mass fraction of 15%, add glacial acetic acid to adjust the pH value to 5, then disperse and react with ultrasonic waves for 5.5 hours, and control the water temperature at 60 °C; after the reaction, the surface-coupling modified carbon fiber precursors were taken out, washed with distilled water until the pH was 7, and dried in a vacuum oven at 80 °C to constant weight to obtain...

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Abstract

The invention discloses a fiber-reinforced polydicyclopentadiene composite material which is prepared by blending and polymerizing the following raw materials in percentage by weight: 95-99.99% of dicyclopentadiene and 0.01-5% of fiber, wherein the fiber is carbon fiber grey yarn or aramid fiber grey yarn. The carbon fiber grey yarn and the aramid fiber grey yarn used as reinforcing materials are blended and polymerized with the dicyclopentadiene to prepare the fiber-reinforced polydicyclopentadiene composite material; the addition of a small amount of fiber grey yarn can obviously enhance the impact strength and tensile strength of the polydicyclopentadiene material; and compared with the single polydicyclopentadiene material, the impact strength is enhanced from 100J/m to 180-350J/m, and the tensile strength is enhanced from 25 MPa to 30-35 MPa.

Description

technical field [0001] The invention relates to a fiber-reinforced polydicyclopentadiene composite material and a preparation method of the composite material. Background technique [0002] Polydicyclopentadiene (PDCPD) is a new type of thermosetting engineering plastic formed by ring-opening polymerization of dicyclopentadiene (DCPD), which has good impact strength, flexural modulus, and heat resistance. , Dimensional stability, corrosion resistance, creep resistance and other characteristics. Dicyclopentadiene, the raw material for producing polydicyclopentadiene, has low viscosity and high polymerization activity, and is especially suitable for Reaction Injection Molding (RIM) molding. It can be used to manufacture various high-performance thin-walled large-scale complex shapes Parts, such as: automobile bumpers, guard plates, side panels, hoods and body shells in the transportation industry; motors, air conditioners and other large electrical equipment shells in electri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L45/00C08L77/00C08K9/02C08K9/06C08K7/06C08K3/04
Inventor 张玉清赫玉欣刘少祯朱伸兵刘虎姚大虎
Owner NORTH HUAJIN CHEM IND CO LTD
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