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Low temperature resin composition and preparation method thereof

A resin composition and low-temperature technology, which is applied in the preparation of low-temperature resin composition for glass fiber cloth reinforcement materials, phenolic-epoxy low-temperature resin composition and its preparation field, can solve problems such as easy cracking and poor toughness, Achieve the effects of not easy to crack, good product performance and strong practicability

Active Publication Date: 2016-08-17
SICHUAN DONGFANG INSULATING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to overcome the disadvantages of poor toughness and easy cracking of existing epoxy (or phenolic epoxy) resin glass fiber cloth reinforced laminated (roll) products at low temperatures, and provide a glass fiber cloth that can work at -196 ° C ~ 130 ° C Low-temperature resin composition for reinforced laminate (roll) product and preparation method thereof

Method used

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  • Low temperature resin composition and preparation method thereof
  • Low temperature resin composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0032] Add 15kg of polyethylene terephthalate with a weight-average molecular weight of 800, 45kg of novolac resin and 210kg of solvent (mass ratio: acetone: toluene: ethanol = 3:2:6) into the reactor. Stir at 40℃~60℃ for 1~2h, cool down to room temperature, add 45kg of epoxy resin and 1kg of hexamethylenetetramine, fully stir and dissolve, finally add 0.5kg of nano-silica, fully disperse and stir evenly, and then prepare A low temperature resin composition is obtained.

Embodiment 1-2

[0034] Add 15kg of polyethylene terephthalate with a weight average molecular weight of 900, 30kg of novolac resin and 100kg of solvent (mass ratio: butanone:toluene:ethanol=3:2:5) into the reactor, Stir at 40℃~60℃ for 1~2h, cool down to room temperature, add 55kg of epoxy resin and 5kg of hexamethylenetetramine, fully stir and dissolve, finally add 3.5kg of nano-silica, fully disperse and stir evenly, that is A low temperature resin composition was prepared.

Embodiment 1-3

[0036] Add 15kg of polyethylene terephthalate with a weight average molecular weight of 1000, 40kg of novolak resin and 150kg of solvent (mass ratio: ethyl acetate:toluene:ethanol=3:2:6) into the reactor , Stir at 40℃~60℃ for 1~2h, cool down to room temperature, add 40kg of epoxy resin and 2kg of hexamethylenetetramine, fully stir and dissolve, finally add 1.5kg of nano-silica, fully disperse and stir evenly, That is, a low-temperature resin composition was prepared.

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Abstract

The invention discloses a low-temperature resin composition and a preparation method thereof. The preparation method of the low-temperature resin composition comprises the steps of adding 15 parts by weight of low-molecular weight polyester resin, 30-50 parts by weight of phenolic novolac resin, 0-15 parts by weight of polyvinyl butyral resin and 100-240 parts by weight of solvent to a reactor, stirring for 1-2 hours at 40-60 DEG C, cooling to a room temperature, next, adding 40-60 parts by weight of epoxy resin and 1-5 parts by weight of hexamethylenetetramine, stirring thoroughly for dissolving, and finally, adding 0.5-5 parts by weight of nano silicon dioxide, and thoroughly dispersing and evenly stirring to obtain the low-temperature resin composition. The invention provides a low-temperature resin mixture which can be used as a support structure at minus 196 to 130 DEG C for a glass fiber cloth reinforcing material; the low-temperature resin mixture is especially applicable to low temperatures, has the characteristics of high strength, good toughness, not easy cracking and the like at low temperatures, and is excellent in product properties and high in practicability.

Description

technical field [0001] The invention belongs to a composition containing an organic polymer compound and its preparation, and relates to a phenolic-epoxy low-temperature resin composition containing polyester (or polyester and polyvinyl butyral) and a preparation method thereof. The resin composition prepared by the invention is suitable for the preparation of composite material products for low temperature, especially suitable for the preparation method of the low temperature resin composition for glass fiber cloth reinforcing material which can be used as a support structure at -196°C to 130°C. Background technique [0002] Fiber-reinforced composite materials for low-temperature structural materials are liquid natural gas, nitrogen, hydrogen, helium, etc., which are transported, stored, and manufactured using low-temperature liquid tank containers and key structures and support materials for low-temperature work. Compared with the low-temperature liquid canned container m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L61/06C08L29/14C08G59/62C08G59/42C08G59/24C08K3/36
Inventor 黄洪驰彭晓伟邵亚婷刘锋
Owner SICHUAN DONGFANG INSULATING MATERIAL
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