Polysiloxane modified polyurethane-epoxy resin polymer material, preparation method thereof and use thereof

A technology of epoxy resin and polysiloxane, which is applied in the field of polysiloxane modified polyurethane-epoxy resin polymer material and its preparation and application, can solve the surface energy, surface hydrophobicity and weather resistance of polymer materials The performance can not be fully satisfied, etc., to achieve the effect of highlighting surface hydrophobicity, good film-forming property, low surface tension and surface energy

Active Publication Date: 2012-06-20
溧阳常大技术转移中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: in order to solve the performance of the existing polymer material surface energy, surface hydrophobicity, and weather resistance can not fully meet the requirements of the damping material, hydrophobicity, etc. To meet the requirements of permanent electronic packaging materials, medical polymer materials and low temperature resistant materials, the invention provides a polysiloxane modified polyurethane-epoxy resin polymer and its preparation method

Method used

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  • Polysiloxane modified polyurethane-epoxy resin polymer material, preparation method thereof and use thereof
  • Polysiloxane modified polyurethane-epoxy resin polymer material, preparation method thereof and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The raw materials are dried until the moisture content is below 0.01%. Add polyether N330 with a molecular weight of 4800 and toluene-2,4-diisocyanate (TDI) into a three-necked flask, add bisphenol A epoxy resin E-44 and stir evenly. After rising to 80°C for 3 hours, add 10.64 grams of liquid linear hydroxyl-terminated polysiloxane with a molecular weight of 50,000, and then raise the temperature to 100°C for 1 hour to obtain a polysiloxane-polyurethane-epoxy resin prepolymer; cool down to After 40°C, add 0.01% dibutyltin dilaurate and 0.2% ethanolamine ethyl acetate solution, stir evenly, quickly pour the viscous polymer into the prepared mold, and take it out after curing at room temperature for 24 hours. Bisphenol A type epoxy resin accounts for 5% of polyurethane-epoxy resin polymer system mass percentage content when feeding; Terminated hydroxyl polysiloxane accounts for polysiloxane-polyurethane-epoxy resin prepolymer mass percentage content 5%; the total molar ra...

Embodiment 2

[0031] Dry the raw materials until the moisture content is below 0.01%, add polyether 2000 with a molecular weight of 2000, diphenylmethane-4,4'-diisocyanate (MDI) into a three-necked flask, add bisphenol A epoxy resin E-51 and stir Evenly, heat up to 60°C for 6 hours, add 15.45 grams of trapezoidal hydroxyl-terminated polysiloxane with a molecular weight of 1,000-100,000, and raise the temperature to 80°C for 3 hours to obtain polysiloxane-polyurethane-epoxy resin Prepolymer: After cooling down to 40°C, add 2% stannous octoate and 5% diethanolamine in 2-butanone solution, stir evenly, quickly pour the viscous polymer into the prepared mold, and cure at room temperature for 24 Unmould after hours. When feeding, bisphenol A epoxy resin accounts for 25% of polyurethane-epoxy resin polymer system mass percentage content; Terminated hydroxyl polysiloxane accounts for polysiloxane-polyurethane-epoxy resin prepolymer mass percentage content of 20%; the total molar ratio of isocyana...

Embodiment 3

[0033]Dry the raw materials until the moisture content is below 0.01%, add polyether N330 with a molecular weight of 4800, diphenylmethane-4,4'-diisocyanate (MDI) into a three-necked flask, add bisphenol A epoxy resin E-51 and stir Evenly, heat up to 70°C for 5 hours, add 33.07 grams of liquid linear hydroxyl-terminated polysiloxane with a molecular weight of 50,000, and raise the temperature to 80°C to continue the reaction for 1.5 hours, then raise the temperature to 90°C for 1 hour to obtain polysiloxane Oxyalkylene-polyurethane-epoxy resin prepolymer; after cooling down to 40°C, add 1% dibutyltin dilaurate and 2% ethyl acetate solution of diethanolamine, stir well, and quickly pour the viscous polymer into In the prepared mold, it was cured at room temperature for 24 hours and then removed from the mold. When feeding, bisphenol A epoxy resin accounts for 50% of polyurethane-epoxy resin polymer system mass percentage content; Terminated hydroxyl polysiloxane accounts for po...

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Abstract

The invention relates to a polysiloxane modified polyurethane-epoxy resin polymer material, a preparation method thereof and a use thereof. The preparation method comprises the following steps: 1, drying raw materials of a polyether, a bisphenol A type epoxy resin and a hydroxyl-terminated polysiloxane until water mass percentages of below 0.01%; 2, adding the polyester, the bisphenol A type epoxy resin and diisocyanate to a reaction vessel to generate a polyurethane-epoxy resin polymer system; 3, adding the hydroxyl-terminated polysiloxane to the polyurethane-epoxy resin polymer system, and reacting to generate a polysiloxane-polyurethane-epoxy resin prepolymer system; and 4, adding a curing agent and a catalyst before ending the reaction, uniformly stirring, dumping the obtained system to a die, and cure-molding. The polysiloxane modified polyurethane-epoxy resin polymer material has the advantage of the complementation of polyurethane-epoxy resin performances and also has the hydrophobic characteristic of the polysiloxane, so comprehensive properties of materials prepared from the polysiloxane modified polyurethane-epoxy resin polymer system are improved, thereby the polysiloxane modified polyurethane-epoxy resin polymer material is mainly applied to high damping materials, waterproof electronic packaging materials, medical materials, long-term storage materials and the like.

Description

technical field [0001] The invention relates to polysiloxane-modified polyurethane-epoxy resin polymer and its preparation method and application. Background technique [0002] With the continuous promotion and application of polymer materials, the requirements for the comprehensive performance of polymer materials have been further increased. For example, damping materials, hydrophobic electronic packaging materials, medical polymer materials, and low-temperature resistant materials used in the automotive industry, fan clutches, and electronics industries require materials with low surface energy, strong surface hydrophobicity, and good weather resistance. Existing polymer materials cannot fully meet the requirements. Contents of the invention [0003] The technical problem to be solved by the present invention is: in order to solve the performance of the existing polymer material surface energy, surface hydrophobicity, and weather resistance can not fully meet the requi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08G18/83C08G18/76C08G18/48C08G18/58
Inventor 张洪文朱静姜彦俞强
Owner 溧阳常大技术转移中心有限公司
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