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Hydroxyl terminated liquid rubber-polyurethane modified epoxy resin polymer and preparation method thereof

A technology of polyurethane modification and epoxy resin, which is applied in the field of chemical synthesis materials, can solve the problems that the comprehensive performance cannot meet the use environment, the resin performance is single, and the temperature resistance is low, so as to achieve large phase interface, high tensile strength, high resistance The effect of increasing temperature

Inactive Publication Date: 2019-10-15
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The performance of the resin used in traditional anti-corrosion and wear-resistant materials is single, and most of the anti-corrosion and wear-resistant resins contain a large amount of organic solvents, which can no longer meet the complex working conditions and environmental protection requirements of modern industries.
[0003] Epoxy resin has th

Method used

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  • Hydroxyl terminated liquid rubber-polyurethane modified epoxy resin polymer and preparation method thereof
  • Hydroxyl terminated liquid rubber-polyurethane modified epoxy resin polymer and preparation method thereof

Examples

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Example Embodiment

[0025] Example 1

[0026] A hydroxyl-terminated liquid rubber-polyurethane modified epoxy resin polymer, the modified epoxy resin polymer is prepared from the following mass parts of materials through Michael addition reaction: 30 parts of prepolymer with NCO end groups , 70 parts of bisphenol A epoxy resin, the epoxy value of the modified epoxy resin is 0.38mol / 100g, and the relative molecule is 5000.

[0027] A method for preparing hydroxyl-terminated liquid rubber-polyurethane modified epoxy resin polymer. The modified epoxy resin is the above-mentioned modified epoxy resin polymer and includes the following steps:

[0028] Step 1. Prepare a prepolymer with NCO end groups: weigh 35 parts of liquid rubber, 235 parts of dihydroxy polyether and 5 parts of catalyst into a three-necked flask with stirring, heating and condensing devices based on mass fraction. Stir, when the solution is heated to 50-55°C, start to add 200 parts of polyisocyanate dropwise, dripping time 30min, heating ...

Example Embodiment

[0032] Example 2

[0033] A hydroxyl-terminated liquid rubber-polyurethane modified epoxy resin polymer, the modified epoxy resin polymer is prepared from the following mass parts of materials through Michael addition reaction: 15 parts of prepolymer with NCO end groups 85 parts of bisphenol A epoxy resin, the epoxy value of the modified epoxy resin is 0.46 mol / 100 g, and the relative molecule is 5500.

[0034] A method for preparing hydroxyl-terminated liquid rubber-polyurethane modified epoxy resin polymer. The modified epoxy resin is the above-mentioned modified epoxy resin polymer and includes the following steps:

[0035] Step 1. Prepare the prepolymer with NCO end groups: weigh 60 parts of liquid rubber, 350 parts of dihydroxy polyether and 10 parts of catalyst into a three-necked flask with stirring, heating and condensing devices based on mass fraction. Stir, when the solution is heated to 50-55°C, start to add 320 parts of polyisocyanate dropwise, dripping time 30min, heat ...

Example Embodiment

[0039] Example 3

[0040] A hydroxyl-terminated liquid rubber-polyurethane modified epoxy resin polymer, the modified epoxy resin polymer is prepared by Michael addition reaction with the following parts by mass: 25 parts of prepolymer with NCO end groups 75 parts of bisphenol A epoxy resin, the epoxy value of the modified epoxy resin is 0.38 mol / 100 g, and the relative molecule is 5000.

[0041] A method for preparing hydroxyl-terminated liquid rubber-polyurethane modified epoxy resin polymer. The modified epoxy resin is the above-mentioned modified epoxy resin polymer and includes the following steps:

[0042] Step 1. Prepare a prepolymer with NCO end groups: weigh 52 parts of liquid rubber, 210 parts of dihydroxy polyether and 4 parts of catalyst into a three-necked flask with stirring, heating and condensing devices based on mass fraction. Stir, when the solution is heated to 50-55°C, start to add 182 parts of polyisocyanate dropwise, dripping time 30min, heat up to 75-80°C and ...

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Abstract

The invention discloses a hydroxyl terminated liquid rubber-polyurethane modified epoxy resin polymer and a preparation method thereof. The method includes the steps of: A. by mass, reacting 5-9 partsof liquid rubber, 42-52 parts of dihydroxy polyether and 1-3 parts of a catalyst to prepare a prepolymer with an NCO end group; B. by mass, reacting 15-30 parts of the prepolymer with an NCO end group prepared by step A, 70-85 parts of bisphenol-A epoxy resin and 1-3 parts of a catalyst to prepare the hydroxyl terminated liquid rubber-polyurethane modified epoxy resin polymer. The modified polymer has mechanical properties, heat resistance, corrosion resistance and wear resistance superior to pure epoxy resin, and compared with epoxy resin, the tensile strength is increased by 76%, the shearstrength is improved by 56.3%, the wear resistance is enhanced by 90% and the temperature resistance is increased by 30DEG C.

Description

technical field [0001] The invention relates to the technical field of chemical synthesis materials, in particular to a hydroxyl-terminated liquid rubber-polyurethane modified epoxy resin polymer and a preparation method thereof. Background technique [0002] In the industry, due to the different working conditions of equipment and spare parts, the requirements for corrosion-resistant and wear-resistant materials are also different, and polymer synthetic resins are the key components that determine the performance of corrosion-resistant and wear-resistant materials. Resins with different properties will Manufacture corrosion-resistant and wear-resistant materials with different application ranges. The performance of the resin used in traditional anti-corrosion and wear-resistant materials is single, and most of the anti-corrosion and wear-resistant resins contain a large amount of organic solvents, which can no longer meet the complex working conditions and environmental pro...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/69C08G18/48C08G18/12C08G18/58
CPCC08G18/12C08G18/4825C08G18/698C08G18/7614C08G18/58
Inventor 王进龙张析余江鸿吴斌白守元张红周涛王军刘守信王永斌
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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