Basic Introduction

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Mortar application field can choose 80-120 mesh fineness of polyvinyl alcohol powder, putty field must choose more than 120 mesh uniform powder. 2488 viscosity is high, but the price is relatively expensive, generally 1788 model can meet the needs

2. Detailed description of polyvinyl alcohol powder

Polyvinyl alcohol (PVA) is made of vinyl acetate through alcoholysis and polymerization. It is a white, powdery, stable, and non-toxic water-soluble polymer. It can be quickly dissolved in room temperature water to form a stable colloid. Water is a good solvent for polyvinyl alcohol. Polyvinyl alcohol has good film-forming properties, and the formed film has excellent adhesion, solvent resistance, friction resistance, tensile strength and oxygen resistance. Polyvinyl alcohol has both hydrophilic and hydrophobic functional groups, so it is a substance with interfacial activity, so polyvinyl alcohol can be used as a protective colloid during polymer emulsification and suspension polymerization.

Physical and chemical properties

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1. Physical properties
A. Solubility: Polyvinyl alcohol powder can be dissolved in room temperature water.
B. Thermal stability: Polyvinyl alcohol softens when heated, does not change significantly below 40 ° C. Above 160 ° C, it will gradually color when heated for a long time, and decomposes when above 220 ° C to produce water, acetic acid, acetaldehyde, and butenaldehyde.
C. Chemical resistance: PVA is hardly affected by weak acids, weak bases or organic solvents, and has high oil resistance.
D. Film-forming property: PVA is easy to form a film, and the formed film is colorless and transparent, with good mechanical strength

2. Chemical properties
PVA can be regarded as a linear polymer with secondary hydroxyl groups.

Technical indicators

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Main role

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PVA polymer powder is particularly suitable for use as a building mortar additive. When used in combination with methyl cellulose ether water-retaining agents, it can improve the flexibility, water retention and adhesion of cement mortar. In addition, it can also reduce the friction of the mortar, thereby enhancing the work efficiency and quality.

Main uses

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Insulation Mortar Putty Powder Tile Binder Thin Layer Adhesive Flexible Adhesive Cement Additive PVC Latex Wetting Adhesive Business Paste Cosmetics Screen Photosensitive Film Cement Additive Wetting Adhesive PVC Latex Coated Paper Coating Agent Long Fiber Yarn Sizing Agent Zinc Printing Photosensitive Film
Recommended dosage: 0.2-1% of the total mixture
Six, dissolution method: the polyvinyl alcohol powder and other powdery ingredients, by dry mixing to fully disperse, and then add water to dissolve seven, packaging, transportation and storage:
25Kg/bag, packed in paper-plastic composite bags. Store in a dry, well-ventilated room at room temperature of 5-30 ° C.