Polyvinyl Alcohol(PVA)-1788/2488

Polyvinyl alcohol (PVA) is made by alcoholysis and polymerization of vinyl acetate. It is a white, powdery, stable, and non-toxic water-soluble polymer that can quickly dissolve in room temperature water to form stable colloids. Water is a good solvent for polyvinyl alcohol. Polyvinyl alcohol has good film-forming properties, forming films with excellent adhesion, solvent resistance, friction resistance, tensile strength, and oxygen barrier properties. Polyvinyl alcohol has both hydrophilic and hydrophobic functional groups, making it a substance with interfacial activity. Therefore, polyvinyl alcohol can be used as a protective colloid during polymer emulsification and suspension polymerization reactions.

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Polyvinyl Alcohol(PVA)-2488

PVA

B, Thermal stability: Polyvinyl alcohol softens when heated and does not show significant changes below 40 degree . Over 160 degree , it gradually colors after prolonged heating, and decomposes above 220 degree to produce water, acetic acid, acetaldehyde, and butenal.

2. Chemical properties: PVA can be regarded as a linear polymer with secondary hydroxyl groups.

	17-88	24-88
	20.0~26.5	44-50
	86.0-90.0	86.0-90.0
	Less than or equal to 7.0	Less than or equal to 7.0
	1.8	1.8
	0.7	0.7
	5-7	5-7
	1650-1850	2400-2500
	72600~81400	118000-124000

In the field of mortar application, polyvinyl alcohol powder with a fineness of 80-120 mesh can be used, while in the field of putty, uniform powder with a fineness of over 120 mesh must be used. 2488 has a high viscosity, but the price is relatively expensive. Generally, the 1788 model can fully meet the needs.

Suggested dosage: 0.2-1.2% of the total amount of the mixture

Packaging, transportation, and storage: 25kg/bag, packaged in paper plastic composite bags. Store in a dry, well ventilated room at a temperature of 5-30 degree .

인기 탭: polyvinyl alcohol(pva)-1788/2488, China polyvinyl alcohol(pva)-1788/2488 manufacturers, suppliers, factory, 전자 제품을위한 폴리 비닐 알코올, 연료 전지의 PVA, 커튼을위한 폴리 비닐 알코올, 밀봉 장비를위한 PVA, 반도체의 PVA, PVA 섬유

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다음:폴리 비닐 알코올 (PVA) 17-99 − (l)