PVAc as Anti-Shrinkage Additive in SMC

As a low profile additive for achieving a surface quality, the NiTCHEN poly vinyl acetate solid resin (PVAC) helps to achieve the perfect surface without shrinkage - stable and reliable.

PVAC NO#: : PVAC09
Molecular Weight: : 110,000g/mol - 150,000g/mol
Viscosity: : 8-11

As a low profile additive for achieving a surface quality, the NiTCHEN poly vinyl acetate solid resin (PVAC) helps to achieve the perfect surface without shrinkage - stable and reliable. If the low profile additives are not added to the production of unsaturated polyester composite parts, shrinkage of the 6-10% will occur. The addition of PVAC solid resin reduces the shrinkage to below 0.05%, resulting in extremely smooth even surfaces. 

This NiTCHEN PVAC09 has very good performance in SMC anti shrinkage applications. The main parameters of this PVAC09 is as bellow: 

ITEM NumberPVAC09PVAC09.1
Viscosity  in 10% Vinyl Ester Liquid [MpaS]8.0-11.08.0-11.0
Acid Value      [mg KOH/g]<0.5<0.5
Monomer Content (VAM)      [ppm]--
AppearanceApparent, Solid, GranuleSlightly Milky, Solid Beads
Volatile Content      [%]<1<1
Density  [g/cm3]1.18±0.011.18±0.01
ShowOut Density         [g/l]700-850700-850
K Value51±351±3
Soften Temperature  []114-124114-124
Molecular Weight        [Mw g/mol]110-150x103110-150x103
Vitrification Temperature   T []43±143±1
Melting Viscosity        [120]2090020900
Content of PVAC [%]100100



TAG:   pvac polyvinyl acetate for smc anti-shrinkage additive pvac for smc

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Nitchen Chemicals is a professional researcher & Manufacturer of Polyvinyl Acetate PVAC solid resin for SMC/BMC, Pultrusion, Adhesives, Gumbase...

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