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Epoxy resin composite based on toughening modification

An epoxy resin, toughening modification technology, applied in the field of epoxy resin, can solve the problems of high crosslinking density, poor flexibility, impact resistance, poor peeling resistance, etc., and achieve high bonding strength and good toughness , good heat resistance

Inactive Publication Date: 2017-04-19
SUZHOU SIRGEL RESINS SPECIALTIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, epoxy resins, especially low molecular weight epoxy resins, have high crosslinking density during curing, the coating film is very brittle, poor flexibility, impact resistance and peeling resistance are not good, which affects the adhesion and adhesion of epoxy resins. Protective properties limit the application of epoxy resins in some fields

Method used

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  • Epoxy resin composite based on toughening modification
  • Epoxy resin composite based on toughening modification
  • Epoxy resin composite based on toughening modification

Examples

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Embodiment 1

[0029] Example 1 discloses a toughened modified epoxy resin composition, the formulation of which is shown in Table 1.

[0030] Formulation table in table 1 embodiment 1

[0031]

[0032]

Embodiment 2

[0034] Example 2 discloses a toughened modified epoxy resin composition, the composition of which is shown in Table 2.

[0035] Formulation table in table 2 embodiment 2

[0036] components Content (parts by weight) epoxy resin 100 Modified toughener (polyurethane) 30 Reinforcement and toughening agent (nano silica) 20 Accelerator 0.2 Hardener 50

Embodiment 3

[0038] Example 3 discloses a toughened modified epoxy resin composition, the formulation of which is shown in Table 3.

[0039] Formulation table in table 3 embodiment 3

[0040] components Content (parts by weight) epoxy resin 100 Modified toughener (polyurethane) 40 Reinforcement and toughening agent (nano silica) 25 Accelerator 0.3 Hardener 55

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Abstract

The invention discloses an epoxy resin composite based on toughening modification. The epoxy resin composite based on toughening modification comprises 100 parts of epoxy resin, 25-45 parts of modification toughening agent, 10-30 parts of reinforcing toughening agent, 0.1-0.4 part of accelerant and 40-60 parts of curing agent. The modification toughening agent is polyurethane or polysulfone. The reinforcing toughening agent is nanometer silicon dioxide. The epoxy equivalent of the epoxy resin is 110-200 g / eq. The epoxy value of the epoxy resin is 0.50-0.94 eq / 100 g. The viscosity of the epoxy resin is 0.1-0.13 Pa. s. Through compound toughening of the epoxy resin, the epoxy resin composite is high in adhesion strength, good in tenacity and good in heat resistance.

Description

technical field [0001] The invention relates to the field of epoxy resins, in particular to an epoxy resin composition based on toughening modification. Background technique [0002] Epoxy resin has good bonding performance due to its special three-membered ring structure of epoxy group, and epoxy resin has outstanding processability and design, so it is often used as a matrix of composite materials. In the low temperature field, epoxy resin is one of the most important composite material matrices, because epoxy resin, as a general-purpose thermosetting resin, has high mechanical properties, strong adhesion, small volume shrinkage, good process performance, and electrical insulation. Excellent performance, corrosion resistance and many other advantages, and has been widely used. [0003] However, epoxy resins, especially low molecular weight epoxy resins, have high crosslinking density during curing, the coating film is very brittle, poor flexibility, impact resistance and ...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L75/04C08L81/06C08K13/02C08K3/36C08K5/57C08K5/17
CPCC08L63/00C08K2201/003C08K2201/011C08L2201/08
Inventor 赵中德
Owner SUZHOU SIRGEL RESINS SPECIALTIES CO LTD
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