Applications of Rubber Powder and Cellulose in Dry-Mix Mortar
Release Time:
2016-05-25
Source:
Applications of Rubber Powder and Cellulose in Dry-Mix Mortar
Rubber powder 1. Applications of cellulose in dry-mix mortar
I. Redispersible latex powder (EVA), dosage: 1–5%
Material definition:
Powdered thermoplastic resin produced by spray drying polymer emulsions followed by subsequent processing.
Main varieties:
1. Vinyl acetate–ethylene copolymer emulsion (VAC/E)
2. Ethylene–Vinyl Chloride–Vinyl Lauryl Ether Terpolymer Powder (E/VC/VL)
3. Vinyl acetate–ethylene–vinyl ester of higher fatty acids terpolymer emulsion (VAC/E/VeoVa)
Characteristics and Uses:
1. Enhance cohesion (film formation)
2. Increase cohesive strength (adhesion)
3. Enhance flexibility (flexibility)
II. Cellulose ethers, dosage 0.03–1%, viscosity 300–400,000 mPa·s
Material definition:
It is manufactured by processing natural fibers through alkali dissolution, grafting (etherification), water washing, drying, and grinding.
Main varieties:
1. Methyl Hydroxyethyl Cellulose Ether (MC)
2. Methyl Hydroxypropyl Cellulose Ether (MC)
3. Sodium Carboxymethyl Cellulose (CMC)
Characteristics and Uses:
1. Water retention
2. Thickening
3. Enhance bond strength
4. Improve construction performance
3. Starch ether, dosage: 0.01–0.1%
Material definition:
Can influence the consistency of gypsum-, cement-, and lime-based mortars, thereby altering their workability and anti-sag properties.
Main varieties:
Often used in combination with cellulose ethers.
Characteristics and Uses:
1. Thickening
2. Enhance constructability
3. Anti-sagging performance
4. Slip Resistance
