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Multi-walled carbon nanotube/barium titanate/polydicyclopentadiene composite material based on front-end ring-opening metathesis polymerization and preparation method thereof

A technology of multi-walled carbon nanotubes and ring-opening metathesis polymerization is applied in the field of MWCNTs/BT/PDCPD composite materials, which can solve the problems of low glass transition temperature and poor dielectric properties, and achieve high dielectric constant and dielectric properties. Low loss and content reduction effect

Active Publication Date: 2021-06-22
ANHUI UNIVERSITY OF ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide MWCNTs / BT / PDCPD composite materials based on front-end ring-opening metathesis polymerization, to solve the problems of poor dielectric properties and low glass transition temperature of existing PDCPD composite materials

Method used

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  • Multi-walled carbon nanotube/barium titanate/polydicyclopentadiene composite material based on front-end ring-opening metathesis polymerization and preparation method thereof
  • Multi-walled carbon nanotube/barium titanate/polydicyclopentadiene composite material based on front-end ring-opening metathesis polymerization and preparation method thereof
  • Multi-walled carbon nanotube/barium titanate/polydicyclopentadiene composite material based on front-end ring-opening metathesis polymerization and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The MWCNTs / BT / PDCPD composite material in this example contains the following raw materials: DCPD and ENB solution 92.7wt%, wherein the mass ratio of dicyclopentadiene and 5-ethylidene-2-norbornene is 95:5. Catalyst 0.06wt%, inhibitors TBP, TMP, TEP total 0.24wt%. 2wt% for NA-MWCNTs and 5wt% for NA-BT.

[0049] The preparation method of the MWCNTs / BT / PDCPD composite material of the present embodiment comprises the following steps:

[0050] (1) Add norbornene diacid anhydride to a cleaned three-necked flask, dissolve it with an appropriate amount of toluene, then add hydroxybarium titanate or hydroxycarbon nanotubes, and stir and react at 90°C for 10h. Suction filtration and drying to obtain norbornene-functionalized barium titanate NA-BT or norbornene-functionalized carbon nanotubes NA-MWCNTs.

[0051] (2) Weigh 0.06wt% catalyst GC2 and 0.24wt% inhibitor, dissolve in ENB, then add DCPD, and mix again to obtain DCPD / ENB solution.

[0052] (3) Weigh 2wt% NA-MWCNTs and ...

Embodiment 2

[0055] The MWCNTs / BT / PDCPD composite material in this example contains the following raw materials: DCPD and ENB solution 89.76wt%, wherein the mass ratio of dicyclopentadiene and 5-ethylidene-2-norbornene is 96:4. Catalyst 0.06wt%, inhibitors TBP, TMP, TEP total 0.18wt%. 5 wt% for NA-MWCNTs and 5 wt% for NA-BT.

[0056] The preparation method of the MWCNTs / BT / PDCPD composite material of the present embodiment comprises the following steps:

[0057] (1) Add norbornene diacid anhydride to a cleaned three-necked flask, dissolve it with an appropriate amount of toluene, then add hydroxybarium titanate or hydroxycarbon nanotubes, and stir and react at 90°C for 10h. Suction filtration and drying to obtain norbornene-functionalized barium titanate NA-BT or norbornene-functionalized carbon nanotubes NA-MWCNTs.

[0058] (2) Weigh 0.06wt% catalyst GC2 and 0.18wt% inhibitor, dissolve in ENB, then add DCPD, and mix again to obtain DCPD / ENB solution.

[0059] (3) Weigh 5 wt% of NA-MWCN...

Embodiment 3

[0062] The MWCNTs / BT / PDCPD composite material in this example contains the following raw materials: DCPD and ENB solution 87.7wt%, wherein the mass ratio of dicyclopentadiene and 5-ethylidene-2-norbornene is 95:5. Catalyst 0.06wt%, inhibitors TBP, TMP, TEP total 0.24wt%. NA-MWCNTs is 2wt%, and NA-BT is 10wt%.

[0063] The preparation method of the MWCNTs / BT / PDCPD composite material of the present embodiment comprises the following steps:

[0064] (1) Add norbornene diacid anhydride to a cleaned three-necked flask, dissolve it with an appropriate amount of toluene, then add hydroxybarium titanate or hydroxycarbon nanotubes, and stir and react at 90°C for 10h. Suction filtration and drying to obtain norbornene-functionalized barium titanate NA-BT or norbornene-functionalized carbon nanotubes NA-MWCNTs.

[0065] (2) Weigh 0.06wt% catalyst GC2 and 0.24wt% inhibitor, dissolve in ENB, then add DCPD, and mix again to obtain DCPD / ENB solution.

[0066] (3) Weigh 2wt% NA-MWCNTs and ...

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Abstract

The invention discloses an MWCNTs / barium titanate / PDCPD composite material based on front-end ring-opening metathesis polymerization and a preparation method thereof. The PDCPD composite material is prepared from the following raw materials: dicyclopentadiene, 5-ethylidene-2-norbornene, a norbornene dianhydride grafted carbon nanotube, norbornene dianhydride grafted barium titanate, a catalyst and an inhibitor, wherein the mass fraction of the dicyclopentadiene and the 5-ethylidene-2-norbornene is 84.58%- 92.76%; the mass fraction of the catalyst is 0.06-0.07%; and the mass fraction of the inhibitor is 0.18-0.35%. Under the conditions of room temperature and 100Hz frequency, the dielectric constant of the prepared composite material exceeds 40, the dielectric loss is as low as 0.08, the glass transition temperature exceeds 160 DEG C, and the composite material has excellent thermal stability and mechanical properties. Meanwhile, processing equipment and a forming process for preparing the material are simple, the energy consumption in the processing process is low, the efficiency is high, the operation is easy, and the application of the PDCPD material in a severe environment is effectively expanded.

Description

technical field [0001] The invention belongs to the field of polymer materials and engineering technology, and specifically relates to a MWCNTs / BT / PDCPD composite material based on front-end ring-opening metathesis polymerization, and also relates to a MWCNTs / BT / PDCPD composite material based on front-end ring-opening metathesis polymerization The method of preparation of the material. Background technique [0002] At present, the preparation of high-performance thermosetting fiber-reinforced polymer composites (FRPC) based on PDCPD needs to rely on large, expensive autoclaves and complex curing technology, and there are problems such as long curing time, high energy consumption, and many material defects. question. Therefore, how to improve the curing efficiency of DCPD through a simple process and prepare high-performance PDCPD-based composites is a hot spot in scientific research and industrial development. Front-end polymerization is a promising curing method. This cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F292/00C08F232/08C08F232/04
CPCC08F292/00C08F232/08C08F232/04
Inventor 王平杨利徐佩陈朗周意杨高尚陈鑫亮孙晓红
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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