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HPMC is divided into two types: instant type and hot melt type. The instant type disperses quickly in cold water and initially has no viscosity because the HPMC is only dispersed in the water without actually being dissolved. After about 2 minutes, the liquid gradually thickens and forms a transparent, viscous colloid. Hot-melt products will appear agglomerated in cold water, but will disperse quickly in hot water until the temperature drops to a certain level and the viscosity will gradually increase to form a transparent and viscous colloid. The hot-melt type is mainly used for putty powder and mortar. It may cause lumps in liquid glue and paint, so it is not suitable. The instant type is more widely used and can be used for putty powder, mortar, liquid glue and coatings without specific restrictions.
Different quality and different types of redispersible latex powder, even when used in the same purpose, will be added in different amounts. Different uses, using the same brand, the same quality of VAE Re-dispersible Polymer Powder, the amount of addition will be different. VAE Re-dispersible Polymer Powder has a wide range of applications. Let's give some examples of specific dosage.
According to different sources of raw materials, the production process of lithium carbonates can be divided into salt lake brine extraction and ore extraction.
Generally speaking, the higher the water reducing rate of water reducing agent is, the more sensitive the mixing logistics mobility is to the content in its effective content range.
Hpmc as a water-retaining agent and retarder for cement mortar, it makes the mortar pumpable. In plastering slurry, gypsum, putty powder or other building materials, it is used as a binder to improve spreadability and prolong operation time.
lithium metasilicate is a colorless, tasteless, non-toxic and odorless solid with good chemical and thermal stability. Concrete using lithium silicate as an additive is widely used in engineering structures to enhance concrete strength, improve concrete properties, and improve durability.
Industrial grade lithium carbonates is a carbonate of lithium, with a molecular formula of Li2CO3, a molecular weight of 73.891, a melting point of 720°C, a boiling point of 1342°C, a density of 2.11g/cm3, and a white powder appearance. It is an inorganic compound, colorless monoclinic crystal, slightly soluble in water and dilute acid, and insoluble in ethanol and acetone. It is used as a raw material for ceramics, glass (1552, -81.00, -4.96%), ferrite, etc., and components are sprayed with silver paste. It is used medically to treat depression.
VAE Re-dispersible Polymer Powder products are water-soluble redispersible powders, which are divided into ethylene/vinyl acetate copolymers, vinyl acetate/ethylene tertiary carbonate copolymers, acrylic acid copolymers, etc. The powder sticky made after spray drying Mixture, using polyvinyl alcohol as protective colloid. This kind of powder can be quickly dispersed into an emulsion after contact with water. Because VAE Re-dispersible Polymer Powder has high bonding ability and unique properties, such as water resistance, construction properties and heat insulation, they are The scope of application is extremely broad.
As an indispensable environmental-friendly additive in various fields, cellulose ether is often referred to as "industrial monosodium glutamate", which has excellent solution thickening properties, good water solubility, suspension or latex stability, film-forming properties, water retention, and adhesion. It is non-toxic and odorless, and is widely used in many fields such as building materials, medicine, food, textiles, daily chemicals, oil exploration, mining, papermaking, polymerization and aerospace.
The viscosity of HPMC is inversely proportional to the temperature, that is, the viscosity increases with the decrease of temperature. The viscosity of a product usually refers to the test result of its 2% aqueous solution at 20 ℃.