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Aplicação do álcool polivinílico

Polyvinyl alcohol is an important chemical raw material used in the manufacture of polyvinyl acetal, gasoline-resistant pipes and vinylon, fabric treatment agents, emulsifiers, paper coatings, ...

Breve introdução ao processo de produção de álcool polivinílico

The production of polyvinyl alcohol is divided into three ways according to the different raw materials: one is petroleum → ethylene → vinyl acetate → ...

A origem e o desenvolvimento do PVA

Polyvinyl alcohol was first developed by German chemists W.0. Herrmann and W.W. Hachnel in 1924, because it can carry out typical polyol chemical reactions and pass. Insoluble treatment makes it ...

Usos da hidroxipropilmetilcelulose

Used as thickener, dispersant, binder, exciphant, oil resistant coating, filler, emulsifier and stabilizer in textile industry.  Also widely used in synthetic resin, petrochemical, ceramic, paper, leather, ...

Aplicações médicas do PVA

PVA hydrogel has the characteristics of water content, elastic modulus, low friction coefficient, high mechanical strength, rich pore leakage network structure, and good biocompatibility similar ...

Aplicação de álcool polivinílico em colírios

Due to the development of science and technology, people are surrounded by electronic products all day long. People who often use these electronic products can ...

O uso de PVA em revestimentos

Polyvinyl alcohol also has good uses in coatings. The polyvinyl alcohol aqueous solution is condensed with formaldehyde under the catalysis of hydrochloric acid to form ...

Novos materiais de embalagem biodegradáveis

In recent years, the development of new biodegradable packaging materials has received extensive attention. Renewable natural polymers have been used to evaluate the biodegradability of ...

Perspectivas de desenvolvimento do álcool polivinílico

Polyvinyl alcohol (PVA) is a high-molecular polymer, made from vinyl acetate (VAC) through polymerization and alcoholysis. It has good adhesion, film-forming properties, oil resistance, and ...

A China deu início à 130ª edição da Feira de Cantão após a epidemia

The opening ceremony of the 130th Canton Fair and Pearl River International Trade Forum was held in Guangzhou. This Canton Fair is a landmark international ...

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