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A kind of polydicyclopentadiene blank and preparation method thereof

A technology for polydicyclopentadiene and dicyclopentadiene is applied in the field of polydicyclopentadiene blanks and their preparation, and can solve the problems of inability to rapidly diffuse, bubbles, and product performance degradation.

Active Publication Date: 2022-05-20
派迈新材料(成都)有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when producing large or thick blanks, due to the exothermic heat of the reaction, the catalyst cannot be rapidly diffused, and the high temperature will deactivate the catalyst, resulting in incomplete polymerization, and there will be an intermediate "sugar core", which will reduce the performance of the product, or produce products such as bubbles. defect

Method used

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  • A kind of polydicyclopentadiene blank and preparation method thereof
  • A kind of polydicyclopentadiene blank and preparation method thereof
  • A kind of polydicyclopentadiene blank and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0098] Example 1-1 Preparation of polybicyclopentadiene blanks of the present invention

[0099] Weight composition of raw materials:

[0100] Biscyclopentadiene: 99 parts, toughener POE: 0 parts, catalyst IIaa 1: 0.0002 parts, exothermic regulator: 0.02 parts, di-tert-butyl peroxide: 0.4 parts, PEG200: 0.5 parts, polyoxyethylene polyoxypropylene pentaerythritol ether: 0.3 parts.

[0101] Among them, the exothermic regulator is 2-thienyl disulfide.

Embodiment 1-2

[0102] Examples 1-2 of the present invention polybicyclic pentadiene blank preparation

[0103]Weight composition of raw materials:

[0104] Biscyclopentadiene: 93.86 parts, toughener POE: 2 parts, catalyst IIaa 1: 0.0004 parts, exothermic regulator: 0.4 parts, di-tert-butyl peroxide: 2.2 parts, PEG200: 0.8 parts, polyoxyethylene polyoxypropylene pentaerythritol ether: 0.7 parts.

[0105] Wherein, the exothermic regulator is a mixture of 0.1 parts tetrahydrothiophene and 0.3 parts 3-acetylthiophene.

Embodiment 1-3

[0106] Example 1-3 Preparation of polybicyclopentadiene blanks of the present invention

[0107] Weight composition of raw materials:

[0108] Dicyclopentadiene: 89 parts, toughener POE: 10 parts, catalyst IIaa 1: 0.0005 parts, exothermic regulator: 1 part, di-tert-butyl peroxide: 3 parts, PEG200: 2 parts, polyoxyethylene polyoxypropylene pentaerythritol ether: 0.8 parts.

[0109] Among them, the exothermic regulator is 3-hexylthiophene.

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Abstract

The invention relates to a polydicyclopentadiene blank and a preparation method thereof. Specifically provided is a polydicyclopentadiene blank represented by formula I and a preparation method thereof, wherein the thickness or radius of the blank is greater than or equal to 1 cm. The present invention also provides the use of the novel ruthenium catalyst represented by the formula IIa or IIb in the preparation of the above-mentioned polydicyclopentadiene blank. The experimental results show that, compared with the polydicyclopentadiene blank prepared by the catalysis of the known catalyst GRUBBS II, the large-size polydicyclopentadiene blank produced by the present invention under the action of the novel ruthenium catalyst has no detonation bubbles, and its The mechanical properties and thermal stability are also significantly improved, and it has very good application prospects in the preparation of large-scale high-performance engineering materials.

Description

Technical field [0001] The present invention belongs to the field of polymer materials, specifically relates to a polybicyclopentadiene blank and a preparation method thereof. Background [0002] Polybicyclopentadiene (PDCPD for short) is a new type of engineering material prepared by catalytic ring-opening polymerization of bicyclic pentadiene. At present, the common catalyst for the preparation of polybicyclic pentadiene is a tungsten catalyst or a ruthenium catalyst, of which the tungsten catalyst is sensitive to moisture and oxygen and is highly susceptible to inactivation, and the catalyst itself is gray-black and the product has a single color, and its use is greatly limited. Since the application of ruthenium catalysts in PDCPD polymerization, a series of catalysts based on Grubbs I and Grubbs II catalysts have been developed, which are mainly catalyzed and produced large thin-walled parts in the reaction injection molding (RIM) process. [0003] CN201510523985 introduces ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F132/08C08F4/80C08F2/44C08K5/45
CPCC08F132/08C08F4/80C08F2/44C08K5/45C08K2201/014Y02P20/584
Inventor 胡革
Owner 派迈新材料(成都)有限责任公司