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Test method for water retention of hydroxypropyl methylcellulose ether HPMC

Test method for water retention of hydroxypropyl methylcellulose ether HPMC

01 Nov,2022

Hydroxypropyl methyl cellulose ether is one of the most commonly used additives in dry mortar. Hydroxypropyl methyl cellulose ether plays an important role in dry mortar, after the cellulose ether within the mortar is dissolved in water, it ensures an effective and uniform distribution of the cementitious material in the system due to the surface activity...

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Factors influencing the viscosity and light transmission of hydroxypropyl methylcellulose

Factors influencing the viscosity and light transmission of hydroxypropyl methylcellulose

01 Nov,2022

High-viscosity hydroxypropyl methyl cellulose in the production of vacuum and nitrogen replacement alone can not produce a very high cellulose. In general, the production of high viscosity cellulose is not controlled in China. However, if a micro oxygen meter can be installed in the kettle, the viscosity of the production can be controlled artificially. In addition, the speed of nitrogen replacement is taken into account, and the system is airtight again. Of course, the degree of polymerisation of the refined cotton is also crucial. If this is not possible, then hydrophobic bonding is the way to go.

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Relationship between water retention and temperature of hydroxypropyl methylcellulose HPMC

Relationship between water retention and temperature of hydroxypropyl methylcellulose HPMC

01 Nov,2022

Factors such as air temperature, temperature and wind pressure speed affect the evaporation rate of water in cement mortars and gypsum-based products. Therefore, there are some differences in the water retention effect of adding the same amount of HPMC in different seasons. The water retention effect of the slurry can be adjusted by increasing or decreasing the amount of HPMC added in the specific construction.

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The mechanism and role of redispersible emulsion powder in tile adhesives

The mechanism and role of redispersible emulsion powder in tile adhesives

01 Nov,2022

The modification of cement mortars by polymers allows the two to obtain complementary effects, thus enabling polymer-modified mortars to be used in many special applications. In addition, due to the advantages of dry mortars in terms of quality control, construction operations, storage and environmental protection, redispersible emulsion powders provide an effective technical means for the production of special dry mortar products.

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Domestic and foreign hydroxypropyl methylcellulose HPMC production process comparison and development prospect analysis

Domestic and foreign hydroxypropyl methylcellulose HPMC production process comparison and development prospect analysis

01 Nov,2022

Propyl methyl cellulose (HPMC for short) is a high-tech fine chemical product in short supply in China, and is one of the most versatile and best performing varieties of cellulose. Due to its excellent thickening, emulsification, colloid protection and moisture retention properties, it is used in coatings, polymerisation, construction materials, oil drilling and extraction, textiles, food, pharmaceuticals, ceramics, electronic devices and agricultural seeds. In developed countries, HPMC is widely used in various industrial fields and daily life, and has become an indispensable chemical auxiliary, known as "industrial MSG".

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