Product Use
In the textile industry, PVA is mainly used as a warp dressing agent, textile finishing agent and one of the raw materials of Vinylon.
In the construction and upholstery industry, it is used as an additive of cement and mortar, inner and outer wall paints as well as a moulding board binder.
In the chemical industry, it is used as a polymer emulsifying agent and dispersing agent to produce PVA formal, PVA acetal and PVA butyral.
In lumbering and paper-making industries, it is used as an adhesive.
In agriculture, it can be used as a pesticide reinforcing agent and used in packaging in the form of PVOH thin films.
In the petroleum industry it is used as a well-fixing agent
At last, it is also found to be used for cosmetics, medicine, printing, ceramics, steel-making, electronics and plating purposes.
Precaution:
- Do not dissolve PVA directly into hot water as there will be agglomeration.
- Do not use place the material directly in contact with naked flames.
- Blending is necessary throughout the whole process.
- Some foam will be created during the dissolution process when the solution is highly concentrated and blending speed is fast. To prevent foaming, some de-foaming agent such as 0.01-0.05% of octanol or tributyl phosophate (for PVA), or 0.2 - 0.5 % of organic silica latex (for PVA), may be added prior to dissolution.
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