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Epoxy resin system and preparation method thereof

An epoxy resin system and epoxy resin technology, applied in the field of epoxy resin system and its preparation, can solve the problems of surface stickiness, irritating taste, etc., and achieve the effects of increased toughness, simple operation, and simple preparation method

Inactive Publication Date: 2017-07-28
TAISHAN SPORTS IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In pultrusion molding and winding molding, unsaturated polyester resin is mostly used, accounting for more than 90% of the resin amount, but the casting of unsaturated resin will shrink after solidification, and the surface will be a little sticky. At this time, because the inside has solidified, it must be polished and polished. In addition, the unsaturated resin also has different degrees of irritating taste.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation method of epoxy resin system is realized through the following steps:

[0024] (1) Mix 85-95 parts of bisphenol F epoxy resin, 0-10 parts of bisphenol A epoxy resin and 0-5 parts of toughening agent by weight and heat to 80°C-90°C. Stir until a clear liquid is obtained, then cool down to room temperature for later use;

[0025] (2) Add 5-7 parts of latent curing agent and 1-2 parts of accelerator to the liquid obtained in step (1) by weight, and then stir with a high-speed dispersing disc until there is no powder and no particles larger than 1mm exist;

[0026] (3) Grinding the liquid obtained in step (2) with a three-roll mill for at least three times to obtain the final product, namely the epoxy resin system;

[0027] Wherein the standard of each part by weight in step (1) and step (2) is the same.

[0028] The epoxy equivalent of the bisphenol F type epoxy resin selected above can be 50-1000g / mol, and the viscosity at 25°C is 200cps-10000cps. As a ...

Embodiment 2

[0036] The specific steps are the same as in Example 1, except that in step (1), 88-92 parts of bisphenol F epoxy resin, 3-8 parts of bisphenol A epoxy resin and 1-3 parts of The toughening agent is mixed and heated to 83°C-87°C, stirring while heating until a transparent liquid is obtained, and then cooled to room temperature for later use; polyalcohol, polymer elastomer and polyurethane elastomer mixture are used as tougheners; imidazoles and A mixture of dicyandiamide is used as a latent curing agent; a mixture of triphenylphosphine and triphenylphosphine salt is used as an accelerator.

Embodiment 3

[0038] The specific steps are the same as in Example 1, except that in step (1), 90 parts by weight of bisphenol F type epoxy resin, 5 parts of bisphenol A type epoxy resin and 2 parts of toughening agent are mixed and heated to 85 ℃, stirring while heating until a clear liquid is obtained, and then cooled to room temperature for later use; thermoplastic resins are used as toughening agents; organic acid hydrazides are used as latent curing agents; organic carboxylates are used as accelerators.

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Abstract

The invention relates to the field of epoxy resin production, in particular to an epoxy resin system and a preparation method thereof. The epoxy resin system is prepared from, by weight, 85-95 parts of bisphenol-F epoxy resin, 0-10 parts of bisphenol-A epoxy resin, 0-5 parts of toughening agents, 5-7 parts of latent curing agents and 1-3 parts of accelerators. The preparation method is simple, easy to operate, strong in scientificity and applicable to industrial production.

Description

technical field [0001] The invention relates to the field of epoxy resin production, in particular to an epoxy resin system and a preparation method thereof. Background technique [0002] In pultrusion molding and winding molding, unsaturated polyester resin is mostly used, accounting for more than 90% of the resin amount, but the casting of unsaturated resin will shrink after solidification, and the surface will be a little sticky. At this time, because the inside has solidified, it must be polished and polished. In addition, the unsaturated resin also has a pungent taste to varying degrees. Products cured with epoxy resin have good physical and chemical properties. It has excellent bonding strength to the surface of metal and non-metal materials, good dielectric properties, small shrinkage, good dimensional stability, high hardness, and flexibility. Good resistance, stable to alkali and most solvents, and the objects made of epoxy resin will have better surface finish. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L81/04C08L75/04C08L101/00C08L87/00C08K13/02C08K3/36C08K5/17C08K5/50C08K5/098C08K5/29C08K5/405C08K5/10C08G59/50
CPCC08L63/00C08G59/50C08G59/506C08L2205/025C08L2205/035C08L81/04C08L75/04C08L101/00C08L87/00C08K13/02C08K3/36C08K5/17C08K5/50C08K5/098C08K5/29C08K5/405C08K5/10
Inventor 张海师龙国荣李胜业王伟卞志勇
Owner TAISHAN SPORTS IND GRP
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