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Polyurethane modified blending resin matrix for heat-insulating support part and preparation method of matrix

A technology of polyurethane modification and resin matrix, applied in the field of resin matrix and its preparation, can solve the problems of narrow operating temperature range, etc., and achieve the effects of wide operating temperature range, high impact resistance and good fluidity

Active Publication Date: 2014-06-18
HARBIN FRP INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problem of using an epoxy resin matrix to prepare a composite material with a narrow service temperature range, and to provide a polyurethane-modified blended resin matrix for heat-insulating supports and a preparation method thereof

Method used

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Effect test

specific Embodiment approach 1

[0014] Specific embodiment 1: In this embodiment, the polyurethane modified blended resin matrix for the heat insulating support is composed of 70 parts by weight of TDE-85 epoxy resin, 30 parts of 6002 epoxy resin, 50 parts of AF-1 curing agent, 15 parts It is made of epoxy diluent, 1 part of accelerator and 10-15 parts of polyurethane.

[0015] The viscosity of the polyurethane-modified blended resin matrix for heat-insulating supports in this embodiment is 30-40S when measured with a 4-cup coating. It is suitable for wet fiber winding process and lamination process, and has excellent tensile shear strength and resistance to high, low temperature performance. Preparation of composite thermal insulation support at -160°C and 20°C has a tensile strength of 320-430MPa, a shear strength of 40-50MPa, and an impact toughness of 33J / cm at -160°C 2 .

specific Embodiment approach 2

[0016] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the epoxy diluent is 669 epoxy reactive diluent. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0017] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the accelerator is 2-ethyl-4-methylimidazole (2E4MZ). Others are the same as those in the first or second embodiment.

[0018] Embodiment 4: Embodiment 1 The preparation method of the polyurethane-modified blended resin matrix for the thermal insulation support is carried out according to the following steps:

[0019] 1. Weigh 70 parts of TDE-85 epoxy resin, 30 parts of 6002 epoxy resin, 50 parts of AF-1 curing agent, 15 parts of epoxy diluent, 1 part of accelerator and 10 to 15 parts of polyurethane according to parts by weight;

[0020] 2. Add polyurethane to 6002 epoxy resin and mix evenly, then add TDE-85 epoxy resin, react at 90°C for 2 hours, cool to room temperature, then add epoxy diluent, epoxy curing agent and accelerator , to obtain the polyurethane-modified blended resin matrix for the heat-insulating support.

[0021] The viscosity of the polyurethane-modified blended resin ma...

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Abstract

The invention relates to a polyurethane modified blending resin matrix for a heat-insulating support part and a preparation method of the matrix, and relates to a resin matrix and a preparation method thereof. The polyurethane modified blending resin matrix aims at solving the technical problem that a temperature range used for preparing a composite material by adopting an epoxide resin matrix is narrow. The polyurethane modified blending resin matrix for the heat-insulating support part is prepared from TDE-85 epoxide resin, 6002 epoxide resin, an AF-1 curing agent, an epoxy diluent, an accelerating agent and polyurethane. The viscosity of the polyurethane modified blending resin matrix for the heat-insulating support part is 400-600 mPa.s at 25-35 DEG C. The polyurethane modified blending resin matrix for the heat-insulating support part can be used under the condition of high-low temperature of -196-120 DEG C and is wide in usage temperature range. The invention belongs to the field of preparation of the resin matrix.

Description

technical field [0001] The invention relates to a resin matrix and a preparation method thereof. Background technique [0002] Epoxy resin is currently one of the main matrix resins for composite materials. Composite materials based on epoxy resin have been widely used in aviation, aerospace and shipbuilding industries. However, epoxy resin has high viscosity, poor fluidity, and internal stress. Large, poor weather resistance and other shortcomings, to a large extent limit its application in some high-tech fields, especially restricting the application of epoxy resin in structural materials and other types of composite materials. The use of epoxy resin matrix to prepare composite materials has large process restrictions and narrow operating temperature range. Contents of the invention [0003] The purpose of the present invention is to solve the technical problem that the use temperature range of the composite material prepared by using the epoxy resin matrix is ​​narrow,...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L75/04
Inventor 魏喜龙陈辉陈曰东马俊龙徐茂凯
Owner HARBIN FRP INST
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