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Waterborne epoxy/unsaturated polyester interpenetrating network polymer alloy and preparation method thereof

A water-based epoxy and interpenetrating network technology, which is applied in the field of water-based epoxy/unsaturated polyester polymer alloys and their preparation, and achieves the effects of excellent tensile strength, good application prospects, and excellent heat and corrosion resistance.

Inactive Publication Date: 2012-09-26
佘植能 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Interpenetrating network polymers to improve the physical and chemical properties of unsaturated polyesters has been proven to be an efficient modification method, but the research on designing unsaturated polyesters and epoxy resins into interpenetrating polymer networks has not been reported.

Method used

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  • Waterborne epoxy/unsaturated polyester interpenetrating network polymer alloy and preparation method thereof
  • Waterborne epoxy/unsaturated polyester interpenetrating network polymer alloy and preparation method thereof
  • Waterborne epoxy/unsaturated polyester interpenetrating network polymer alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Add 150Kg of bisphenol A type epoxy resin CYD-128 to a reaction kettle equipped with a stirrer, a condenser, a constant pressure feeding device and a thermometer, heat it to 70°C, and drop it with a constant pressure feeding device under stirring after constant temperature Add 25Kg of 2,2-dimethylolbutyric acid solution dissolved in N-methylpyrrolidone, add dropwise for half an hour, rise to 100°C, measure the acid value of the system regularly, stop the reaction when the acid value of the system is less than 5mgKOH / g , the product A is obtained by cooling;

[0050] Then, 50Kg of maleic anhydride was added, the temperature was raised to 130°C, and the acid value was measured every half an hour with concentrated sulfuric acid as a catalyst. When the acid value basically did not change, the reaction was stopped, and the product B was obtained by cooling down;

[0051] Finally, 13Kg of triethylamine was added therein as a neutralizing agent, reacted for 30min, slowly added...

Embodiment 2

[0057] Add 100Kg of bisphenol A type epoxy resin CYD-128 to a reaction kettle equipped with a stirrer, a condenser, a constant pressure feeding device and a thermometer, heat it to 70°C, and drop it with a constant pressure feeding device under stirring after constant temperature Add 25Kg of 2,2-dimethylolbutyric acid solution dissolved in N-methylpyrrolidone, add dropwise for half an hour, rise to 100°C, measure the acid value of the system regularly, stop the reaction when the acid value of the system is less than 5mgKOH / g , the product A is obtained by cooling;

[0058] Then put in 30Kg of maleic anhydride, heat up to 130°C, use concentrated sulfuric acid as a catalyst, measure the acid value every half an hour, stop the reaction when the acid value basically does not change, and cool down to obtain product B;

[0059] Finally, 13Kg of triethylamine was added therein as a neutralizing agent, reacted for 30 minutes, slowly added dropwise 250Kg of deionized water and stirred ...

Embodiment 3

[0065] Add 150Kg of bisphenol A type epoxy resin CYD-128 to a reaction kettle equipped with a stirrer, a condenser, a constant pressure feeding device and a thermometer, heat it to 70°C, and drop it with a constant pressure feeding device under stirring after constant temperature Add 25Kg of 2,2-dimethylolbutyric acid solution dissolved in N-methylpyrrolidone, add dropwise for half an hour, rise to 100°C, measure the acid value of the system regularly, stop the reaction when the acid value of the system is less than 5mgKOH / g , the product A is obtained by cooling;

[0066] Then, 40Kg of maleic anhydride was added, the temperature was raised to 130°C, and the acid value was measured every half an hour with concentrated sulfuric acid as a catalyst. When the acid value basically did not change, the reaction was stopped, and the product B was obtained by cooling down;

[0067] Finally, 13Kg of triethylamine was added therein as a neutralizing agent, reacted for 30 minutes, slowly ...

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Abstract

The invention relates to a waterborne epoxy / unsaturated polyester interpenetrating network polymer alloy and a preparation method of the alloy; the waterborne epoxy / unsaturated polyester interpenetrating network polymer alloy is composed of a waterborne epoxy / unsaturated polyester component A, a waterborne unsaturated polyester component B and a curing agent component C; a mixing ratio measured by mass of the waterborne epoxy / unsaturated polyester component A and the waterborne unsaturated polyester component B is 2: 1-1: 2; dosage of the curing agent component C is 0.025-0.1% of total mass of the waterborne epoxy / unsaturated polyester component A and the waterborne unsaturated polyester component B; an obtained emulsion C is mixed with the obtained emulsion D, and the curing agent component C of cyclohexanone peroxide and cobalt naphthenate is added into a mixture of the obtained emulsion C and the obtained emulsion D, the mixture is poured into a mould after the mixture is stirred uniformly, is baked at 80-100 degrees centigrade, and is cured to obtain a product that is waterborne epoxy / unsaturated polyester interpenetrating network polymer alloy; the method can effectively play a modification role of epoxy resins, and uses water as disperse phase, so that the method is secure and environment friendly; impact strength and tensile strength of condensates are excellent; heat resistance and corrosion resistance are excellent.

Description

technical field [0001] The invention relates to a water-based epoxy / unsaturated polyester polymer alloy and a preparation method thereof. Background technique [0002] Unsaturated polyester resin (UPR) is a thermosetting resin, which is the polycondensation product of unsaturated dibasic acid, saturated dibasic acid and polyol. It is widely used in chemical industry, machinery, electrical appliances, transportation and artificial stone for architectural decoration, etc. field. Its cross-linked network structure makes its composite products have good mechanical properties and dimensional stability under heat and stress, and has excellent electrical properties, chemical corrosion resistance, simple and cheap processing technology, but this cross-linking When the structure is used in some specific occasions, the impact performance cannot meet the requirements, and the application is greatly restricted. Improving the impact resistance and toughness of unsaturated polyester is ...

Claims

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Application Information

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IPC IPC(8): C08L63/10C08L67/06C08G59/16C08G59/14C08G59/50C08G63/52C08K5/14C08K5/098
Inventor 佘植能张良均刘洋
Owner 佘植能
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