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Vinyl acetate copolymer modified by silsesquioxane (tris sulfonic acid isobutyl polyhedral oligomeric silsesquioxane (POSS)) and preparation method thereof

A technology of silsesquioxane and vinyl acetate, applied in the field of silsesquioxane-modified vinyl acetate copolymer and its preparation, to achieve the effect of improving water resistance

Inactive Publication Date: 2012-07-11
XIAMEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wang Haitao (Chinese patent, CN101121768A, polyvinyl acetate copolymer emulsion) provides a kind of method utilizing emulsion polymerization method to prepare polyvinyl acetate copolymer, to solve the problem of the dispersibility of common polyvinyl acetate emulsion

Method used

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  • Vinyl acetate copolymer modified by silsesquioxane (tris sulfonic acid isobutyl polyhedral oligomeric silsesquioxane (POSS)) and preparation method thereof
  • Vinyl acetate copolymer modified by silsesquioxane (tris sulfonic acid isobutyl polyhedral oligomeric silsesquioxane (POSS)) and preparation method thereof
  • Vinyl acetate copolymer modified by silsesquioxane (tris sulfonic acid isobutyl polyhedral oligomeric silsesquioxane (POSS)) and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A reaction device containing a stirrer, a reflux condenser and a dropping funnel (2) was built on a 500ml four-necked flask, a magnetic rotor was placed in the four-necked flask, and 50ml of ionized water and 6g of polyvinyl alcohol were added. The device is placed in a digital display intelligent temperature-controlled magnetic stirrer to heat in a water bath, turn on condensation reflux, stir, adjust the speed, and adjust the water temperature to 50°C until the polyvinyl alcohol is completely dissolved. 2 g of methyl methacrylate, 3 g of ethyl methacrylate, 3 g of butyl methacrylate, 3 g of acrylic acid, and 4 g of hydroxyethyl methacrylate were mixed and added to the dropping funnel. Adjust the water temperature to 65°C, add 3ml of 4% OP-10 solution, 3g of Tris Sulfonic Acid Isobutyl POSS (product of Hybrid Plastics), and 1g of ammonium persulfate (dissolved in 10ml of deionized water) into the four-necked flask, and start dropping at the same time. 45g of vinyl acet...

Embodiment 2

[0026]A reaction device containing a stirrer, a reflux condenser and a dropping funnel (2) was built on a 500ml four-necked flask, a magnetic rotor was placed in the four-necked flask, and then 30ml of ionized water and 4g of polyvinyl alcohol were added. The device is placed in a digital display intelligent temperature-controlled magnetic stirrer to heat in a water bath, turn on condensing reflux, stir, adjust the rotation speed appropriately, and adjust the water temperature to 50 °C until the polyvinyl alcohol is completely dissolved. 1 g of methyl methacrylate, 2 g of ethyl methacrylate, 2 g of butyl methacrylate, 2 g of acrylic acid, and 3 g of hydroxyethyl methacrylate were mixed and added to the night dropping funnel. Adjust the water temperature to 70°C, add 2ml of 4% OP-10 solution, 2g of Tris Sulfonic Acid Isobutyl POSS, 0.4g of ammonium persulfate (dissolved in 10ml of deionized water) into the four-necked flask, and dropwise add 35g of vinyl acetate and 10g of The ...

Embodiment 3

[0030] A reaction device containing a stirrer, a reflux condenser and a dropping funnel (2) was built on a 500ml four-necked flask, a magnetic rotor was placed in the four-necked flask, and 40ml of ionized water and 4.5g of polyvinyl alcohol were added. Put the device into a digital display intelligent temperature-controlled magnetic stirrer for heating in a water bath, turn on condensation reflux, stir, adjust the speed appropriately, and adjust the water temperature to 50 °C until the polyvinyl alcohol is completely dissolved. 1.5 g of methyl methacrylate, 2.5 g of ethyl methacrylate, 2.5 g of butyl methacrylate, 2.5 g of acrylic acid, and 3.5 g of hydroxyethyl methacrylate were mixed and added to the night dropping funnel. Adjust the water temperature to 70°C, add 2.5ml of 4% OP-10 solution, 2.5g of Tris Sulfonic Acid Isobutyl POSS, 0.6g of ammonium persulfate (dissolved in 10ml of deionized water) into the four-necked flask, and dropwise add 40g of vinyl acetate and 13.5 g...

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Abstract

A vinyl acetate copolymer modified by silsesquioxane (tris sulfonic acid isobutyl polyhedral oligomeric silsesquioxane (POSS)) and a preparation method of the copolymer are disclosed, and a vinyl acetate copolymer is related. The invention provides the vinyl acetate copolymer modified by POSS and the preparation method of the copolymer. The vinyl acetate copolymer modified by POSS has the components in mass parts of: 35-45 parts of vinyl acetate; 10-15 parts of modified monomer, 0.5-1 parts of initiator; 2.5-5 parts of compound emulsifier; 4-6 parts of colloid protecting agent; and 40-60 parts of deionized water. Using an amphiphilic organic / inorganic hybrid enhanced material with surface activity as an emulsifier in the polymer synthesis process, enables the rigid cage structure of POSS to be effectively combined on the surface of the polymer. The modified vinyl acetate copolymer has an outer layer of the POSS nano reinforced material; and an inner layer of the vinyl acetate copolymer with a core-shell structure, thereby improving the usabilities of the polymer material such as water resistance, surface hardness and the like.

Description

technical field [0001] The invention relates to a vinyl acetate copolymer, in particular to a silsesquioxane-modified vinyl acetate copolymer and a preparation method thereof. Background technique [0002] Polyvinyl acetate (PVAc) prepared by emulsion polymerization has a series of advantages such as low price, convenient use, good gluing performance, non-toxic and harmless, and no environmental pollution, and has been widely used in wood, leather, paper, foam plastics. Gluing of other porous materials. However, vinyl acetate emulsion also has shortcomings such as poor water resistance, freezing resistance, creep resistance, and low heat resistance. With the development of science and technology and economy, some application fields have put forward more performance requirements for polyvinyl acetate latex, such as: cold resistance, stability, water resistance, heat resistance, high solid content, high bonding strength, etc. Polyvinyl acetate emulsion has been unable to mee...

Claims

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Application Information

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IPC IPC(8): C08F218/08C08F220/14C08F220/18C08F220/28C08F2/26C08F2/30C08K5/549
Inventor 戴李宗许延利詹赐发郭一宾陈珉许一婷曾碧榕刘李
Owner XIAMEN UNIV
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