Álcool Polivinílico (PVA): Especificações, Aplicações e Insights do Setor
O Álcool Polivinílico (PVA) é um polímero sintético de alto desempenho conhecido por sua excepcional capacidade de formação de filme, solubilidade em água e fortes propriedades adesivas. Amplamente utilizado em diversos setores, o PVA atua como ingrediente-chave na colagem têxtil, revestimentos de papel, adesivos e materiais de construção. Suas especificações, incluindo grau de hidrólise e viscosidade, determinam sua adequação para diferentes aplicações. O PVA totalmente hidrolisado oferece resistência de filme e resistência química superiores, enquanto os parcialmente hidrolisados proporcionam melhor solubilidade. Desde o aumento da durabilidade têxtil até a melhoria da força de ligação dos adesivos, o PVA desempenha um papel crucial na indústria moderna. Este artigo explora as especificações e as principais aplicações do PVA, ajudando você a escolher o tipo certo para suas necessidades.
Polyvinyl Alcohol (PVA) is a versatile synthetic polymer known for its excellent film-forming, emulsifying, and adhesive properties. Due to its unique water solubility and chemical resistance, PVA is widely used in industries like textiles, paper manufacturing, construction, and adhesives.
WanWei PVA Specification(Non Fiber Grade)
Hydrolysis Degree (%): Determines the solubility of PVA in water. Higher hydrolysis levels (98-99%) result in limited water solubility, while partially hydrolyzed PVA dissolves more easily.
Viscosity (mPa.s): A key factor in determining the thickness and flow properties of PVA solutions, affecting applications in adhesives, coatings, and films.
| Item | Viscosidade (mPa.s) | Grau Médio de Polimerização | Grau de Alcoólise (Mol/mol) | Peso molecular | Volátil (%) | Umidade (%) | Cinzas (%) | pH |
|---|---|---|---|---|---|---|---|---|
| 04-88 (E) | 3.0-4.5 | / | 86.0-90.0 | / | 7.0 | 2.8 | 1.0 | 5-7 |
| 04-99 (E) | 3.0-4.5 | 300-450 | 98.0-100.0 | 13200-19800 | 7.0 | 2.8 | 1.0 | 5-7 |
| 05-88(L) | 4.0-6.0 | / | 86.0-90.0 | 17600-26400 | 7.0 | 2.8 | 1.0 | 5-7 |
| 05-99 (E) | 4.0-6.0 | 450-600 | 98.0-100.0 | 19800-26400 | 7.0 | 2.8 | 1.0 | 5-7 |
| 10-92 (E) | 8.0-10.0 | / | 90.0-94.0 | / | 7.0 | 2.8 | 1.0 | 5-7 |
| 10-99 (E) | 9.0-14.0 | 900-1100 | 98.0-100.0 | 39600-48400 | 7.0 | 2.8 | 1.0 | 5-7 |
| 14-92 (E) | 13.0-18.0 | / | 90.0-94.0 | / | 7.0 | 2.8 | 1.0 | 5-7 |
| 15-99 (E) | 20.0-26.0 | 1450-1650 | 98.0-100.0 | 63800-72600 | 7.0 | 2.8 | 1.0 | 5-7 |
| 17-80 (E) | 18.0-24.0 | / | 78.0-82.0 | / | 7.0 | 2.8 | 1.0 | 5-7 |
| 17-88 (E) | 20.0-28.0 | / | 86.0-90.0 | 72600-81400 | 7.0 | 2.8 | 1.0 | 5-7 |
| 17-92 (E) | 20.0-30.0 | / | 90.0-94.0 | 72600-81400 | 7.0 | 2.8 | 1.0 | 5-7 |
| 17-95 (E) | 20.0-30.0 | / | 94.0-96.0 | 72600-81400 | 7.0 | 2.8 | 1.0 | 5-7 |
| 17-96 (E) | 20.0-30.0 | / | 94.0-98.0 | / | 7.0 | 2.8 | 1.0 | 5-7 |
| 17-97(L) | 21.0-31.0 | 1650-1850 | 96.0-98.0 | 72600-81400 | 8.0 | 3.8 | 2.0 | 5-8 |
| 17-98 (E) | 20.0-30.0 | 1600-1800 | 97.0-99.0 | 70400-79200 | 7.0 | 2.8 | 1.0 | 5-7 |
| 17-99 (E) | 20.0-26.0 | 1680-1850 | 98.0-100.0 | 73900-82700 | 7.0 | 2.8 | 1.5 | 5-7 |
| 17-99 (H) | 20.0-26.0 | 1650-1850 | 98.5-100.0 | 72600-81400 | 9.0 | 7.0 | 3.0 | 5-7 |
| 19-99 (E) | 26.0-32.0 | 1800-2000 | 98.0-100.0 | 79200-88000 | 7.0 | 2.8 | 1.0 | 5-7 |
| 20-88 (E) | 28.0-40.0 | / | 86.0-90.0 | 81400-94600 | 7.0 | 2.8 | 3.0 | 5-7 |
| 20-99 (E) | 32.0-40.0 | 2000-2200 | 98.0-100.0 | 88000-96800 | 7.0 | 2.8 | 1.5 | 5-7 |
| 20-99 (H) | 34.0-42.0 | 2000-2300 | 98.5-100.0 | 88000-101200 | 9.0 | 7.0 | 1.0 | 5-7 |
| 22-99 (E) | 40.0-48.0 | 2200-2400 | 98.0-100.0 | 96800-105600 | 7.0 | 2.8 | 1.5 | 5-7 |
| 23-99 (H) | 42.0-55.0 | 2300-2600 | 98.5-100.0 | 101200-114400 | 9.0 | 7.0 | 3.0 | 5-7 |
| 24-88 (E) | 40.0-55.0 | / | 86.0-90.0 | 101200-110000 | 7.0 | 2.8 | 1.5 | 5-7 |
| 24-99 (E) | 48.0-60.0 | 2400-2600 | 98.0-100.0 | 105600-114400 | 7.0 | 2.8 | 1.5 | 5-7 |
| 26-99 (E) | 60.0-75.0 | 2600-2800 | 98.0-100.0 | 114400-123200 | 7.0 | 2.8 | 3.0 | 5-7 |
| 28-99 (E) | 75.0-90.0 | 2800-3000 | 98.0-100.0 | 123200-132000 | 7.0 | 2.8 | 1.5 | 5-7 |
Wanwei PVA Main Application
PVA is extensively used in textiles for fabric finishing and warp sizing, enhancing fiber strength during weaving. In adhesives, it serves as a key ingredient in wood glue and paper adhesives due to its strong bonding properties. Additionally, PVA plays a critical role in construction as a cement additive, improving workability and adhesion.
| Item | Aplicativo |
|---|---|
| 04-88(L) 04-99(L) 05-88(L) | Medicine film, Outer pharmaceutical base materials, Water soluble film, High count,Flat printing photosensitive film, Paper making, Emulsion. |
| 05-99(L) 10-92(L) 14-92(L) | Medicine film, Outer pharmaceutical base material,Warp size, Emulsifier |
| 10-99(L) 17-80(L) | PVA dispersant in polymerization |
| 15-99(L) 17-88(L) 20-88(L) | Concrete modifier for oil well cemmenting, Soil improcement agent, Wet adhesive,Warp size,PVA film,PVAC Emulsion protective colloid, Light-sensitive Glue, PVB and so on. |
| 17-92(L) 17-96(L) 17-95(L) 17-98(L) 17-97(L) 19-99(L) 17-99(L) 20-99(H) 17-99(H) | Fabric sizing material, Fabric finishing agent, Paper surface sizing agent, Paper pigment binder, Paper adhesive, Emulsifier, PVA film, Thermoseting resin modifier, Ferrite bonded material, Dispersant, Coating, Clue, PVA, PVF and so on. |
| 17-99F(L) 17-99F(H) 26-99(L) | Vinylon, HSHM-PVA Fiber, Water soluble fiber, Flame reterdant hollow fiber and so on. |
| 26-99(L) | High viscosity adhesive, High-grade paint |
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