Applications
Applications of Polyvinyl Alcohol(PVA, Pvoh) by Industry
Mainly used in warp yarn size, fabric finishing agent, vinylon fiber raw materials in the textile industry; 107 glue, interior and exterior wall coatings, adhesives in the construction and decoration industry; polymer emulsifier, dispersant and polyvinyl formal, acetal in the chemical industry Acetaldehyde, butyral resin; paper adhesive in paper industry; soil conditioner, pesticide adhesion synergist and polyvinyl alcohol film in agriculture; daily cosmetics and high-frequency quenching agent, etc. aspect.
Emulsion Stabilizer Applications
Having both hydrophobic and hydrophilic groups within its molecules, PVA performs excellently as an emulsifier for synthetic resin emulsions. In particular, it has the following advantages over other surfactants on the market:
a) Excellent protective colloid ability for vinyl acetate monomer
b) Resilience of dried membrane
c) Reliable adhesion to hydrophilic materials such as cellulose
1. Protective colloid for PVAc emulsion: PVA2488, PVA2088, PVA1788, PVA2688, PVA0588, PVA1799, PVA0599, PVA2699
2. Suspending Agent for PVC: PVA2488, PVA2688
3. Suspending Agent for Polystyrene: PVA2488, PVA2688, PVA2088
4. Emulsion Stabilizer: PVA2499, PVA1799, PVA2099, PVA1788
Construction Industry and Cement Additives
Joyforce PVA-BAW05, PVA-BAW17, PVA-BAW24 are specially designed for cement additives and building industry. They improve plaster properties such as flexibility, water retention and increase plaster viscosity as well. In addition, they do not only reduce the friction of plaster but also enhance its working capacity and quality, prevent cracking and shedding of plaster, increase adhesion and smoothness of cement. To mix desired amount of PVA with cement well before water is added prevents the lumping of PVA.
1. For Building Material Binder: PVA-BAW05, PVA-BAW17, PVA24S
2. For Tile Adhesion: PVA-BAW24, PVA2088S, PVA2488S2
3. For Decorated Wall: PVA-BAW05, PVA0588S
4. Additive of Cement: PVA-BAW05, PVA-BAW17, PVA2088S2
5. Adhesive for Forming Board: PVA2499, PVA1799
Paper-Making & processing Applications
PVA has been widely used as a paper surface treating resin. As each grade has distinct characteristics, it is possible to provide various types of paper with different specific functions by choosing appropriate PVA grades.
Expected Effects:
a) Improved strength, Surface strength (printability), Z-axis strength (strength within paper layer), Folding resistance, Abrasion resistance.
b) Improved smoothness.
c) Improved surface gloss(d) Improved oil resistance and solvent resistance
1. Adhesive: PVA1799, PVA2499, PVA2699, PVA2088
2. Remoistenable Adhesive: PVA0588, PVA2088, PVA2488, PVA0388
3. Surface Sizing: PVA0599, PVA1099, PVA1799
4. Pigment Binding: PVA0599, PVA1099, PVA1599, PVA1799, PVA0588
5. Internal Sizing： PVA1799S
Textile Industrial
Functional PVA is now the most efficient synthetic sizing agent for warp paste with the following advantages:
a) PVA membrane has a good sizing effect and can improve the weavability of high-density and high-grade textiles due to its excellent properties of obdurability, smoothness, wear resistance and adhesiveness on fibers.
b). PVA has a powerful cohesive force on fibers as well as good protective effects to reduce times of textile yarn breaking and improve weaving efficiency.
c). PVA size paste doesn’t not get corrosive easily and degraded without any change in viscosity after long-time heating, which ensures stable sizing and minimizes hard size spots.
d). At textile factories the moisture of starch paste must be at 80-85%, while the moisture requirement for PVA size mixture is just 70-75%, which makes it possible to improve operating environment and production efficiency.
e). To minimize desizing in the process of sizing and weaving and keep the factory area clean, PVA series with medium degrees of polymerization and 90-97 (mol/mol)% alcoholysis, such as PVA2095 and PVA1796, are applicable.
1. Warp Sizing Agent: PVA1799, PVA1599, PVA1788, PVA2088, PVA1588
2. Resin Finishing Agent: PVA2499, PVA1799, PVA2699
3. Adhesive for Screen Printing: PVA1788, PVA2088, PVA2488
Oil And Gas Drilling, Well Cementation
Polyvinyl alcohol powder used as oil and natural gas drilling, cementing process of water loss additives to enhance the water retention of cement slurry to prevent the early dehydration of cement slurry in the permeable formation, slow setting time and compressive strength has little impact, and effectively prevent gas transiting used as oil and natural gas drilling process of anti-collapse additives, can effectively prevent drilling fluid filtrate immersed in mud shale, In order to prevent wall instability and even wall collapse, the inhibition and anti-collapse performance of polyvinyl alcohol is long-term effective. It has been successfully applied in China as oil field auxiliaries.
1. Water Loss Additives for well Cementation: PVA1788S2, PVA2488S, PVA2488HT
Film, Packing Materials, Printing Industries
PVA film has many unique advantages unmatchable for general polypropylene and polyvinyl chloride due to its properties of bearing static electricity, good optical transmission, good gloss, low oxygen permeability, and coriaceous coating. In this sector traditional varieties are seldom used. Due to low viscosity of PVA1799, generally for membrane not easily soluble, PVA2099 and 2499 may be used, whereas the PVA1796 and 1788 may be often used for production of water-soluble membranes.
1. Cold Water Soluble PVA Film: PVA2088, PVA1788, PVA1588.
2. Cold Water Insoluble PVA Film: PVA1799, PVA0599.
3. Photosensitive Film of Stencil Screen Printing: PVA2088, PVA1799
4. Photosensitive Film of Lithographic Printing Plate: PVA0488, PVA0588, PVA1788