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High-temperature high-pressure hydrolysis-resistant epoxy resin composition for pultrusion as well as preparation method and application thereof

An epoxy resin, high temperature and high pressure technology, applied in the field of epoxy resin, can solve the problem of epoxy resin not resistant to high temperature and high pressure hydrolysis

Active Publication Date: 2021-04-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technology to be solved by the present invention is the problem that epoxy resin is not resistant to high temperature and high pressure hydrolysis in the prior art, and provides a high temperature and high pressure hydrolysis resistant epoxy resin composition for pultrusion molding and a preparation method thereof

Method used

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  • High-temperature high-pressure hydrolysis-resistant epoxy resin composition for pultrusion as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) 100g 4,4'-diaminodiphenylmethane epoxy resin (epoxy value 0.85mol / 100g), 142g methylhexahydrophthalic anhydride, 5g amino-modified silicone oil (number average molecular weight 2000 , amino content 6~7wt%), 5g polyether polyol ep-330n (molecular weight 5000) and 1g triphenylphosphine bromide are added in the there-necked flask, stir while heating up to 70 ℃ under nitrogen protection, make each component Completely miscible. The mixed epoxy resin composition was sampled and tested for viscosity (measured by a Brookfield CAP2000+H series cone-plate viscometer, the rotor type CAP-06, and the rotational speed was 100 rpm).

[0032] (2) Pour the mixed resin into the preheated mold, place the mold in a blast oven, and heat-cure according to the curing process of 100°C / 2h+160°C / 2h. After it cools down to room temperature, remove the resin sample from the mold.

[0033] (3) Test the tensile properties and T of the resin sample before the hydrolysis test g . Test the ten...

Embodiment 2

[0035] (1) 100g 4,4'-diaminodiphenylmethane epoxy resin (epoxy value 0.85mol / 100g), 142g methylhexahydrophthalic anhydride, 5g epoxy modified silicone oil (number average molecular weight 4500, epoxy group content 10~12wt%), 5g polyether polyol ep-330n (molecular weight 5000) and 1g triphenylphosphine bromide join in the there-necked flask, stir while heating up to 70 ℃ under nitrogen protection, make The components are completely miscible. The mixed epoxy resin composition was sampled and tested for viscosity (measured by a Brookfield CAP2000+H series cone-plate viscometer, the rotor type CAP-06, and the rotational speed was 100 rpm).

[0036] (2) Pour the mixed resin into the preheated mold, place the mold in a blast oven, and heat-cure according to the curing process of 100°C / 2h+160°C / 2h. After it cools down to room temperature, remove the resin sample from the mold.

[0037] (3) The test before and after hydrolysis is the same as in Example 1.

Embodiment 3

[0039] (1) 100g 4,4'-diaminodiphenylmethane epoxy resin (epoxy value 0.85mol / 100g), 142g methylhexahydrophthalic anhydride, 5g alcohol hydroxyl modified silicone oil (number average molecular weight 1500, hydroxyl content 8~9wt%), 5g polyether polyol ep-330n (molecular weight 5000) and 1g triphenylphosphine bromide were added in the three-necked flask, and the temperature was raised to 70°C while stirring under the protection of nitrogen, and each group are completely miscible. The mixed epoxy resin composition was sampled and tested for viscosity (measured by a Brookfield CAP2000+H series cone-plate viscometer, the rotor type CAP-06, and the rotational speed was 100 rpm).

[0040] (2) Pour the mixed resin into the preheated mold, place the mold in a blast oven, and heat-cure according to the curing process of 100°C / 2h+160°C / 2h. After it cools down to room temperature, remove the resin sample from the mold.

[0041] (3) The test before and after hydrolysis is the same as in Ex...

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Abstract

The invention discloses a high-temperature high-pressure hydrolysis-resistant epoxy resin composition for pultrusion as well as a preparation method and application thereof. The epoxy resin composition comprises the following components in parts by weight: 30-80 parts of epoxy resin, 0.1-10 parts of modified silicone oil, 0.1-10 parts of polyether polyol, 10-80 parts of a curing agent and 0.1-5 parts of an accelerant. The epoxy resin composition has good mechanical properties, heat resistance, manufacturability and high-temperature and high-pressure hydrolysis resistance, a cured product of the epoxy resin composition is treated for 7 days in a distilled water environment with the temperature of 160 DEG C and the pressure of 30 MPa, and the glass transition temperature (Tg) retention rate before and after treatment is 95% or above. The tensile strength retention rate is 85% or above, and the Young's modulus retention rate is 90% or above. The epoxy resin composition can be used for preparing a resin-based composite material deep well sucker rod.

Description

technical field [0001] The invention relates to the technical field of epoxy resins, in particular to a high-temperature and high-pressure hydrolysis-resistant epoxy resin composition for pultrusion molding and its preparation method and application. Background technique [0002] Due to the excellent thermal properties, mechanical properties, corrosion resistance and good process performance of epoxy resin, epoxy resin is widely used in bonding, casting, packaging, lamination, molding, fiber reinforced composite materials and other fields. However, the cured epoxy resin usually has a large number of hydrophilic groups such as hydroxyl groups and ester groups, resulting in poor performance under hot and humid conditions. [0003] Due to the characteristics of light weight, high strength and energy saving of epoxy composite materials, in the field of oil fields, sucker rods made of epoxy composite materials have begun to gradually replace traditional metal sucker rods. In the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L83/08C08L71/02C08L83/04
Inventor 王鑫张藕生唐建华余荣禄王芳
Owner CHINA PETROLEUM & CHEM CORP
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