Core-shell particles with acroleic acid esterified polyurethane as main body of core and making method and use thereof

A technology of acrylated and acrylic esters, which is applied to core-shell particles with acrylated polyurethane as the main core and its preparation method and application field, which can solve the problems of reduced compatibility, lower glass transition temperature, and incomplete phase separation and other issues, to achieve the effect of lowering the glass transition temperature, good effect, avoiding environmental pollution and toxicity

Inactive Publication Date: 2006-03-22
GUANGZHOU CHEM GROUTING CO LTD CAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, liquid polyurethane toughened epoxy resin has the following disadvantages: in the curing process of epoxy resin, as the molecular weight increases, the compatibility of liquid polyurethane and epoxy resin decreases, and phase separation occurs gradually. Completely, a small amount of liquid polyurethane remains in the epoxy resin phase, resulting in a relatively large decrease in glass transition temperature

Method used

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  • Core-shell particles with acroleic acid esterified polyurethane as main body of core and making method and use thereof
  • Core-shell particles with acroleic acid esterified polyurethane as main body of core and making method and use thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Add 200g polyoxypropylene-oxyethylene glycol (M=1000) and 69.61g toluene diisocyanate (TDI) in the 500ml three-neck round-bottomed flask that stirrer, thermometer and condenser tube are arranged, logical nitrogen, while stirring, While raising the temperature to 75°C, react for 2h, then raise the temperature to 80°C, add 5 drops of catalyst dibutyltin dilaurate, and react for 1h. Cool down to 70°C, add 13.41g of dimethylolpropionic acid (DMPA), react for 6h, add 50ml of acetone to reduce viscosity, then cool down to 60°C, add 26.10g of hydroxyethyl methacrylate (HEMA), 0.31g of polymerization inhibitor Agent p-hydroxyanisole, reacted for 7h to obtain acrylated polyurethane.

[0047] Take 30 g of the above-prepared acrylated polyurethane, neutralize it with ammonia water, stir for 5 minutes, add 270 ml of deionized water, stir and emulsify at a high speed to obtain an acrylated polyurethane emulsion.

[0048] Add the above-mentioned emulsion and 15g butyl acrylate into ...

Embodiment 2

[0054] Add 250g polyethylene adipate glycol (PEA, M=2000) and 62.51g diphenylmethane-4,4'-bis For isocyanate (MDI), blow nitrogen, stir while heating up to 75°C, react for 2 hours, heat up to 80°C, add 5 drops of catalyst dibutyltin dilaurate, react for 1h. Cool down to 70°C, add 9.30g of dimethylolbutyric acid (DMBA), react for 5h, add 40ml of acetone to reduce viscosity, then cool down to 60°C, add 18.17g of hydroxypropyl methacrylate, 0.40g of polymerization inhibitor p-benzene Diphenol, reaction 6h, in acrylated polyurethane.

[0055] Take 30 g of the above-prepared acrylated polyurethane, neutralize it with ammonia water, stir for 5 minutes, add 300 ml of deionized water, stir and emulsify at a high speed to obtain an acrylated polyurethane emulsion.

[0056] Add the above-mentioned emulsion and 15g of butyl methacrylate into a 500ml four-neck round-bottomed flask equipped with a stirrer, a thermometer and a condenser, blow nitrogen gas, stir and disperse evenly for 30 m...

Embodiment 3

[0062] Add 200g polyε-caprolactone diol (PCL, M=1000) and 88.92g isophorone diisocyanate (IPDI) in the 500ml three-neck round-bottomed flask that stirrer, thermometer and condensing tube are arranged, blow nitrogen, While stirring, heat up to 75°C, react for 2h, heat up to 80°C, add 5 drops of catalyst stannous octoate, react for 2h, cool down to 70°C, add 15.01g of tartaric acid, react for 5h, add 50ml of acetone to reduce viscosity, then cool down To 60°C, add 26.10g hydroxyethyl methacrylate (HEMA), 0.31g polymerization inhibitor 2,6-di-tert-butylhydroquinone, and react for 8h to obtain acrylated polyurethane.

[0063] Take 30 g of the above-prepared acrylated polyurethane, neutralize it with ammonia water, stir for 5 minutes, add 200 ml of deionized water, stir and emulsify at a high speed to obtain an acrylated polyurethane emulsion.

[0064] Add the above-mentioned emulsion and 15g of ethyl acrylate into a 500ml four-necked round-bottomed flask equipped with a stirrer, a...

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Abstract

The invention relates to a core-shell particle having a main core body of acrylic acid ester polyurethane, the process for preparation and use, wherein the core-shell particle uses the copolymer of acrylated polyurethane monomer and acrylic ester category soft monomers as the core, and uses the outer grafted upper acrylic ester type hard monomers as shell, while the preparation process comprises the steps of, (1) preparing acrylated polyurethane, (2) re-emulsifying to obtain water-based acrylated polyurethane emulsion, (3)A. charging acrylic ester type soft monomer into the emulsion to obtain seed emulsion, B. charging acrylic ester type hard monomer into the emulsion to obtain core-shell emulsion, (4) demulsifying with sodium chloride saturated solution, freezing, filtering by suction, scouring, drying, grinding thus obtaining the core-shell particle with a main core body of acrylic acid ester polyurethane.

Description

technical field [0001] The invention relates to a core-shell particle with acrylated polyurethane as the core body, a preparation method and application thereof. technical background [0002] Epoxy resin has excellent mechanical strength and bonding performance, good heat resistance, electrical performance and molding processing performance, small shrinkage rate, good medium resistance, and low cost. It is widely used as semiconductor packaging materials and adhesive matrix materials Used in aviation, aerospace, electronics, machinery and other fields. However, the biggest defect of epoxy resin is its high internal stress, high brittleness, and poor impact resistance, which hinder its application. Therefore, toughening modification has become one of the urgent problems to be solved in practical application of epoxy resin. [0003] Liquid polyurethane is a kind of polymer material with excellent performance. It has the characteristics of high elasticity and high adhesion. I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F290/06C08G18/10C08G18/48
Inventor 申景强张亚峰邝健政邱劲东石红菊
Owner GUANGZHOU CHEM GROUTING CO LTD CAS
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