100-80 Fully Hydrolyzed Polyvinyl Alcohol

Introduction

Poly(vinyl alcohol) (PVOH, PVA, or PVAL) is a water-soluble synthetic polymer. It has the idealized formula [CH2CH(OH)]n. It is used in papermaking, textiles, and a variety of coatings. It is white (colorless) and odorless. It is sometimes supplied as beads or as solutions in water.

Physical-chemical properties

Grade	Hydrolysis, /%	Viscosity, /(mPa.s)	Volatiles, /%≤	Ash, /%≤	pH	Purity, /%≥
088-05	87.0-89.0	4.5-6.0	5.0	0.5	5-7	93.5
098-05	98.0-99.0	5.0-6.5	5.0	0.5	5-7	93.5
098-08	98.0-99.0	9.0-11.0	5.0	0.5	5-7	93.5
088-15	87.0-89.0	15.0-19.0	5.0	0.35	5-7	94.0
098-15	98.0-99.3	19.0-23.0	5.0	0.5	5-7	94.0
088-20	87.0-89.0	20.5-24.5	5.0	0.4	5-7	93.5
100-30	99.0-100.0	27.0-34.0	5.0	0.5	5-7	94.0
088-35	87.0-89.0	29.0-34.0	5.0	0.3	5-7	93.5
100-50	99.0-100.0	43.0-53.0	5.0	0.5	5-7	94.0
088-50	87.0-89.0	45.0-55.0	5.0	0.3	5-7	93.5
100-60	99.0-100.0	58.0-68.0	5.0	0.5	5-7	94.0
088-60	87.0-89.0	56.0-68.0	5.0	0.35	5-7	94.0
100-70	99.0-100.0	68.0-78.0	5.0	0.7	5-7	94.0
100-80	99.0-100.0	80.0-98.0	5.0	0.7	5-7	94.0
100-40H	99.0-100.0	35.0-45.0	6.5	2.5	7-10	86.5
100-50H	99.0-100.0	45.0-55.0	6.5	2.5	7-10	86.5

Application

Type	Application
	Fiber Processing			Paper processing
	staple yarns	filament	Post processing	surface sizing	pigment binder
100-80			☆

Type	Application
	Binders			Stabilizer
	book paper bond	Re-wet adhesive	plywood adhesive	Vinyl Acetate emulsion polymerization	suspension polymerization of vinyl chloride
100-80	◎	◎	◎

Type	Application
	Molding materials&Other
	PVB	Film or sponge, soil improvement	soil improvement	ight-sensitive glue	medicine or cosmetics	building materials with additives
100-80

Notes:1. ◎: general use  2. ☆: Use under the situation  3. ●: powder more suitable.

HUAMAO® POLYVINYL ALCOHOL SOLUTION PREPARATION
For a complete description of the various methods for preparing HUAMAO® solutions, please refer to our Solution Preparation Guideline brochure (Pub #2001-PVOH-1060). Following is a list of important highlights:
■ HUAMAO® polyvinyl alcohols should first be dispersed in cold or room temperature water using sufficient agitation to uniformly suspend all particles. (As a general rule, the surface of the water should be moving vigorously.)
■ Addition rates, solids, and cookout temperatures vary by grade as illustrated in the adjacent chart. For best results, do not exceed maximum solids.
■ Elevate solution temperature to recommended levels (185–205 °F/85–96 °C) and hold for 30 minutes.
■ HUAMAO® polyvinyl alcohols are in solution after cooking and can be used at any temperature. While the cooking process is straightforward, please be aware of the following pitfalls:
■ There is a high risk of lumping if polyvinyl alcohol is added to preheated water. Lumps are very difficult to cook out.
■ All tanks and lines must be free of borax to avoid coagulation.
■ Tanks should have baffles and flush bottom valves to avoid dead spots where polyvinyl alcohol particles can agglomerate.
■ Failure to reach the minimum
temperature may result in undissolved polyvinyl alcohol regardless of cook time.
■ HUAMAO® polyvinyl alcohols cannot be overcooked. However, boiling will induce foam.
■ Avoid high speed, small diameter mixers which may induce air entrainment and create foam. Further, they may not provide sufficient agitation to the sides of the tank allowing polyvinyl alcohol particles to settle out and not dissolve.
■ If solutions are kept for more than 24 hours, a biocide addition is recommended. HUAMAO® polyvinyl alcohols may be jet cooked. However, unlike starch which explodes rapidly into colloidally sized fragments in a steam jet, HUAMAO® polyvinyl alcohols will dissolve slowly by shedding layers. Maximizing time in the post-jet residence coils and providing a holding tank for the polyvinyl alcohol solution after the coils will ensure complete solubility. 15 minutes hold time at 200 °F is recommended.

Customization

HUAMAO® can customize according to customer demand, production of goods.
1. HUAMAO® can customize the packaging according to the customer's requirements.
2. HUAMAO® can process various sizes (mesh 80 100 120 160 etc.).
3. HUAMAO® can produce different physical forms of PVA: flocculent, flaky, powder.
4. HUAMAO® can produce PVA which is the special technical index (alcoholysis degree and viscosity), according to the customer's demand.

The preparation and the film-forming principle of polyvinyl alcohol-water glass interior wall paint are to use the emulsification of surfactant to mix polyvinyl alcohol and water glass full and disperse in the water in the intense agitation and to form emulsion liquid. Then add the other ingredients to stir and become a product. Coating the paint on the wall, after the full play of water, can form a smooth, containing filler filling and other ingredients and play a role in the decorative and protective coating.

Polyvinyl alcohol-water glass interior wall decorative paint has many advantages, no one in the new and old walls, wood doors and windows, cement rods, iron railings on the brushing, its technical performance is very reliable. Compared with the paint, the construction is simple, the efficiency is high, the economic effect is very significant. Welcomed by the construction staff.