Polyvinyl alcohol

PVA

Polyvinyl alcohol (PVA), a white, stable, non-toxic, water-soluble polymer, is produced through the polymerization and hydrolysis of vinyl acetate. It exists in powder, flake, or flocculent forms. In the dry powder construction materials sector, PVA1788 and PVA2488 powders are the most commonly used.

Process introduction

Polyvinyl alcohol (PVA), a white, stable, non-toxic, water-soluble polymer, is produced through the polymerization and hydrolysis of vinyl acetate. It exists in powder, flake, or flocculent forms. In the dry powder construction materials sector, PVA1788 and PVA2488 powders are the most commonly used.


Physicochemical indexes

ModelDH-7024
SurfaceWhite solid powder
ash content (Wt %)≤0.5
Shuifen (Wt %)≤5.0
PH5.5-7.5
fineness

100 mesh: 100 mesh pass rate> 95%
150 mesh: 140 mesh pass rate> 95%

Viscosity (mPa.s, 4% aqueous solution, 20°C, measured by NDJ-1 viscometer)

PVA1788:15-25
PVA2488:40-60

Alcohol content (%)85-89


Polypropylene short fiber

Polypropylene short fiber, a synthetic fiber derived from polypropylene, exhibits chemical resistance, heat resistance, hydrophobicity, and moisture-wicking properties. With a density of 0.91g/cm³ (the lightest among the five major synthetic fibers), it has a standard moisture regain rate approaching zero and thermal insulation efficiency reaching 36.49% (1.7 times that of polyester). When hydrophilically modified, this fiber can be uniformly dispersed in concrete to enhance crack resistance, water resistance, and impact strength, thereby extending the service life of engineering structures.
Specifications: 3mm, 6mm, 9mm, 12mm

Product  features:

1.  Higher  strength and elastic modulus are beneficial to the mechanical properties of  mortar or concrete.

2.  With strong  wrapping force with cement surface, and hydrophilic treatment is conducive to  ash hanging and strength improvement.

3.Excellent  dispersion, no caking,  effectively ensure the performance of crack resistance.

4.The  fiber has stable chemical properties and strong acid and alkali resistance.



Applications:

Crack-resistant mortar, plastering mortar, repair mortar, high ductility concrete, floor, flue, gypsum products, blocks, etc. 。

Storage and packaging:

20kg/bag Store in a cool, dry place below 35℃ and use within 12 months.

Polyvinyl alcohol