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Preparation method of konjac glucomannan modified polycarbonate type water-based polyurethane emulsion

A technology of konjac glucomannan and polycarbonate, which is applied in the field of polyurethane emulsion, can solve the problems of lack of anti-aging ability, and achieve the effects of enhancing mechanical properties and anti-aging properties, reducing cohesion, and strong mechanical properties

Inactive Publication Date: 2018-05-04
ANHU WUHU CHANGJIANG JACK UP EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Zhang Yunran used polycarbonate diol, isophorone diisocyanate as the main synthetic raw materials, and dimethylol propionic acid As a hydrophilic chain extender, 1,4-butanediol is a small molecule chain extender, polycarbonate-type water-based polyurethane emulsion is synthesized, polycarbonate-type polyurethane is modified with glucose, and they are characterized. It is concluded that the prepared material has better overall performance, but has no anti-aging ability

Method used

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Embodiment Construction

[0016] A kind of preparation method of konjac glucomannan modified polycarbonate type aqueous polyurethane emulsion, comprises the following steps:

[0017] (1) Dissolve 1.5 parts by weight of succinic anhydride and 1.5 parts by weight of bisphenol A in 105 parts by weight of xylene. After ultrasonic dispersion, reflux for 7 hours and add 1.5 parts by weight of KH570 silane coupling agent. After stirring evenly, add 2.5 Parts by weight of nano-iron oxide, after 3.5 hours of reaction at 50 ° C and ultraviolet irradiation, rotary evaporation to obtain a solid, ready to use;

[0018] (2) After drying and dehydrating 27 parts by weight of polycarbonate diol for 18 hours, slowly add 23 parts by weight of diphenylmethane diisocyanate, and 0.05 parts by weight of dibutyltin dilaurate, and react at 82°C for 18 minutes in a nitrogen atmosphere. Add an appropriate amount of acetone to dilute and react for 3.5 hours, cool down to 65°C, add 15 parts by weight of a mixture of dimethylolpro...

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Abstract

The invention discloses a preparation method of konjac glucomannan modified polycarbonate type water-based polyurethane emulsion. The preparation method comprises the following steps: performing esterification reaction on micromolecular succinic anhydride and bisphenol A by taking xylene as a solvent to produce succinic anhydride single and double phenol A ester, adding coupling agent modified nano-ferric oxide, synthesizing a konjac glucomannan modified polycarbonate type water-based polyurethane prepolymer by taking polycarbonate diol and diphenyl methane diisocyanate as main synthesis raw materials, and blending the prepolymer, the succinic anhydride single and double phenol A ester and the nano-ferric oxide modified by the coupling agent to enhance the mechanical property and the ageing resistance simultaneously, so that the prepared emulsion has high compatibility and is environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of polyurethane emulsion, in particular to a preparation method of konjac glucomannan-modified polycarbonate-type aqueous polyurethane emulsion. Background technique [0002] As a thermoplastic polymer, polycarbonate can be simply divided into aliphatic, aromatic and other categories, and has a wide range of applications in automobiles, construction, electrical appliances and other industries. Because of its non-toxic, transparent, and good corrosion resistance, it is also used in daily life, such as safety glass, CD-ROM and other materials. [0003] Water-based polyurethane is a special polyurethane resin material, which is formed by dissolving and dispersing polyurethane in water. It can be used as a basic resin in various application forms, such as water-based polyurethane coatings, adhesives, etc. It is widely favored by people, which requires that water-based polyurethane must be green and environmenta...

Claims

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Application Information

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IPC IPC(8): C08L75/06C08K9/06C08K3/22C08K5/11C08G18/76C08G18/66C08G18/64C08G18/44C08G18/34C08G18/32C08J3/07
CPCC08G18/44C08G18/6484C08G18/664C08G18/6659C08G18/7671C08J3/07C08J2375/06C08K5/11C08K9/06C08K2003/2272C08K2201/011
Inventor 苗则波
Owner ANHU WUHU CHANGJIANG JACK UP EQUIP CO LTD
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