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Vinyl acetate-co-ethylene copolymers (VAE) in powder form are white, free-flowing, dry powders that can be easily redispersed into water to form a stable emulsion. Often referred to as “solid latex,” VAE redispersible powders (RDPs) are easier to ship, store (thanks to excellent storage stability), handle, and dry-mix compared to VAEs in emulsion form. VAEs dominate […]

1.Water-Holding Capacity Hydroxy Propyl Methyl Cellulose (HPMC) helps to significantly improve the water-holding capacity of mortar. Just a low level of hydroxypropyl methyl cellulose addition can lead to a significant improvement in the water retention rate of the mortar. When the addition level is 0.002%, the water retention rate increases from 83% to 88%; while […]

Improved Workability HPMC improves the consistency and ease of application of construction materials, making them easier to spread and apply. Enhanced Water Retention It significantly increases the water retention capacity of cement and gypsum-based products, preventing premature drying and improving the curing process. This leads to better strength development and reduced risk of cracks. Increased […]

Hydroxypropyl Methylcellulose (HPMC) is a versatile compound widely used in various industries due to its unique properties, including its ability to retain water. When selecting HPMC for water retention purposes, it’s important to consider several factors to ensure the optimal performance of the product. In this article, we’ll explore the key considerations for choosing HPMC based on […]

MHEC (methyl hydroxyethyl cellulose) is an important cellulose ether that is widely used in building materials, especially in the formulation of tile cement adhesives. MHEC can not only significantly improve the construction performance of ceramic tile adhesives, but also enhance its mechanical properties and bonding strength. 1. Good water retention performance One of the main roles […]

The chemistry of RDP revolves around the polymerization of monomers to form stable polymer dispersions, which are later spray-dried to obtain the powder form. Key factors influencing the properties of RDPinclude: Polymer Composition: Different polymers offer varying properties such as flexibility, adhesion, and water resistance. For instance, VAE-based RPPs are renowned for their excellent adhesion […]

Redispersible Polymer Powder is a free-flowing, white powder obtained through the spray-drying of polymer dispersions. These powders consist of a blend of synthetic polymers such as vinyl acetate ethylene (VAE), vinyl acetate/vinyl versatate (VeoVa), ethylene-vinyl chloride (E-VC), and others. The production process involves the conversion of liquid dispersions into solid powder form while preserving their […]

Hydroxypropyl MethylCellulose (HPMC) can only be dissolved in organic solvents if they are polar and contain a higher percentage. This solubility is independent of whether the organic solvents have water. Compared to alternative substitutes, HPMC exhibits superior solubility in organic solvents. This section details the solubility of HPMC in specific organic solvents, such as IPA […]

HPMC solubility in water has two types: surface-treated HPMC and non-surfaced treated HPMC. 1 Solubility of Surface-Treated HPMC in Cold Water When surface-treated HPMC is added to cold water, it disperses into the water without exhibiting any viscosity. After stirring and waiting for approximately 2 minutes, the solution thickens and becomes viscous. This is attributed to […]