A high-temperature and hydrolysis-resistant epoxy resin matrix for sucker rods

A technology for decomposing epoxy resin and epoxy resin, which is applied in the field of high-temperature-resistant and hydrolysis-resistant epoxy resin matrix and its preparation, can solve the problems of resin decomposition, affecting the long-term reliability of carbon fiber composite sucker rods, etc., and achieve good high pressure resistance High humidity aging performance, non-cracking effect

Active Publication Date: 2022-06-24
TECHSTORM MATERIAL TECH SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, many existing pultrusion systems are prone to resin decomposition after high-pressure, high-temperature, high-humidity aging, which seriously affects the long-term reliability of carbon fiber composite sucker rods

Method used

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  • A high-temperature and hydrolysis-resistant epoxy resin matrix for sucker rods
  • A high-temperature and hydrolysis-resistant epoxy resin matrix for sucker rods
  • A high-temperature and hydrolysis-resistant epoxy resin matrix for sucker rods

Examples

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preparation example Construction

[0040] The preparation raw materials of the biphenyl novolac epoxy resin of the present invention include biphenyl novolac and epichlorohydrin.

[0041] In a preferred embodiment, the molar ratio of the biphenyl novolac and epichlorohydrin is 1:(7-9); preferably, the molar ratio of the biphenyl novolac and epichlorohydrin is 1: 8.

[0042] In a preferred embodiment, the raw materials for the preparation of biphenyl novolac include 4,4'-dimethoxymethyl biphenyl and phenol.

[0043] In a more preferred embodiment, the molar ratio of the 4,4'-dimethoxymethyl biphenyl to phenol is 1:(4-6); more preferably, the 4,4'-dimethoxymethyl biphenyl The molar ratio of methoxymethyl biphenyl and phenol was 1:5.

[0044]In a more preferred embodiment, the preparation process of the biphenyl novolac is: in a 250mL four-neck flask, add 4,4'-dimethoxymethyl biphenyl and phenol, add oxalic acid to adjust the pH to 5~ 6. The reaction is stirred and refluxed for 3 to 5 hours under nitrogen atmos...

Embodiment 1

[0098] Embodiment 1 of the present invention provides a high temperature-resistant and hydrolysis-resistant epoxy resin matrix for sucker rods. The preparation raw materials include component A and component B; in parts by weight, component A includes 50 parts of bisphenol A-type epoxy resin, 15 parts of novolac novolac epoxy resin, 10 parts of cycloaliphatic epoxy resin, 30 parts of glycidyl amine epoxy resin;

[0099] The B component includes 50 parts of curing agent, 5 parts of toughening agent, 1 part of accelerator, and 1 part of catalyst;

[0100] The epoxy equivalent of the bisphenol A epoxy resin is 170-200 g / mol.

[0101] The bisphenol A epoxy resin was purchased from Shandong Deyuan Epoxy Technology Co., Ltd., and the model is DY-128E.

[0102] The novolac-type novolac epoxy resin includes biphenyl novolac epoxy resin and o-cresol-type novolac epoxy resin; the epoxy equivalent of the o-cresol-type novolac epoxy resin is 200-240 g / mol, which can be purchased from Fr...

Embodiment 2

[0119] Embodiment 2 of the present invention provides a high-temperature and hydrolysis-resistant epoxy resin matrix for sucker rods, the preparation raw materials include A component and B component; in parts by weight, the A component includes 70 parts of bisphenol A-type epoxy resin, 25 parts of novolac novolac epoxy resin, 25 parts of cycloaliphatic epoxy resin, 70 parts of glycidyl amine epoxy resin;

[0120] The B component includes 100 parts of curing agent, 20 parts of toughening agent, 5 parts of accelerator, and 5 parts of catalyst;

[0121] The epoxy equivalent of the bisphenol A epoxy resin is 170-200 g / mol.

[0122] The bisphenol A epoxy resin was purchased from Shandong Deyuan Epoxy Technology Co., Ltd., and the model is DY-128E.

[0123] The novolac-type novolac epoxy resin includes biphenyl novolac epoxy resin and o-cresol-type novolac epoxy resin; the epoxy equivalent of the o-cresol-type novolac epoxy resin is 200-240 g / mol, which can be purchased from From...

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Abstract

The invention relates to the field of polymer chemical industry, and more specifically, the invention provides a high-temperature-resistant and hydrolysis-resistant epoxy resin matrix for sucker rods and a preparation method thereof. The first aspect of the present invention provides a high-temperature-resistant and hydrolysis-resistant epoxy resin matrix for sucker rods, the preparation raw materials include A component and B component; the A component includes bisphenol A type epoxy resin, phenolic type Novolac epoxy resin, alicyclic epoxy resin, glycidylamine epoxy resin; the B component includes curing agent, toughening agent, accelerator, catalyst; the bisphenol A type epoxy resin The epoxy equivalent is 130-300 g / mol.

Description

technical field [0001] The invention relates to the field of polymer chemical industry, and more particularly, the invention provides a high temperature-resistant and hydrolysis-resistant epoxy resin matrix for sucker rods and a preparation method thereof. Background technique [0002] As an important component of the oil and gas industry, sucker rods play a key role in oil production operations, affecting oil production efficiency and oil production capacity. With the gradual deepening of the oil production depth in the oil field, the requirements for the self weight, mechanical properties, temperature resistance and corrosion resistance of the sucker rod are also gradually increased. [0003] In order to solve the problems of low strength-to-weight ratio and poor corrosion resistance of metal sucker rods, composite sucker rods based on carbon fiber / epoxy resin have been developed in the industry. This kind of composite sucker rod is produced by pultrusion process and has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L63/04C08L63/02C08K5/3445C08K5/5435C08K5/1515
CPCC08L63/00C08L2201/08C08L2205/025C08L2205/035C08L2203/18C08K2201/014C08L63/04C08K5/3445C08K5/5435C08K5/1515
Inventor 吉明磊刘清斌陈翠萍
Owner TECHSTORM MATERIAL TECH SHANGHAI CO LTD
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