Polyvinyl alcohol with defoamer
Polyvinyl alcohol is an organic compound, white flake, flocculent or powdery solid without taste. Polyvinyl alcohol is an important chemical raw material for the manufacture of gasoline-resistant pipes and vinylon fibers, fabric treatment agents, emulsifiers, adhesives and glues, etc., but when polyvinyl alcohol is added, polyvinyl alcohol has a certain surface Active, due to directional […]
JOYFORCE PVA 1799 others Application
JOYFORCE PVA 1799 has the characteristics of high adhesion, less dosage, high blank rate, low ash content, stable sintering and volatilization, etc., which makes it have great advantages in the use of magnetic products. The quality has been greatly improved. In the electrolytic refining of copper, aluminum, etc., adding an appropriate amount of PVA1799 can effectively reduce […]
How to dissolve polyvinyl alcohol PVA
The dissolution of polyvinyl alcohol is a very delicate operation. If the dissolution is not good, micelles or even hard blocks will appear, which directly affects the subsequent operation and product quality. First, the polyvinyl alcohol is dispersed into cold water. The dispersion means that the particles are scattered in the water, rather than a […]
JOYFORCE PVA 1799 Anwendung
One of the important uses of polyvinyl alcohol PVA1799 is to produce vinylon fiber. PVA1799 is also used in textile pulp and textile treatment agent to prevent fabric shrinkage and wrinkling. Polyvinyl alcohol will chemically crosslink with thermosetting resin, which can effectively avoid the reduction of the tear strength of fiber products due to surface […]
PVA als neues umweltfreundliches Material
Biodegradable plastics represented by PLA and PBAT have begun to usher in an outbreak, and PVA has also quietly entered the ranks of alternatives to traditional plastics and developed various applications. If made into PVA film to replace traditional plastic film, it can be used in plastic bags, food packaging and other fields. Pure PVA […]
Modifiziert mit Polyvinylalkohol
Polyvinyl alcohol (PVA) is a colorless, non-toxic, non-corrosive, biodegradable water-soluble organic polymer. At present, in addition to being the raw material of vinylon, PVA is widely used in textile sizing, coatings, adhesives, emulsifiers, films and other industrial fields. However, the PVA molecule contains a large number of hydroxyl groups, resulting in poor water resistance and […]
The effect of mixing polyvinyl alcohol and HPMC
PVA polymer powder is especially suitable for use as a building mortar additive. It can be used together with the water-retaining agent of hydroxypropyl methylcellulose HPMC to improve cement. Mortar flexibility, water retention, improve mortar adhesion. In addition, the friction of the mortar is reduced, thereby enhancing the work efficiency and quality. Prevent the cracking and falling […]
Mechanism of polyvinyl alcohol formation
PVA is unique among polymers (compounds composed of large, multi-unit molecules) because it is not formed by the polymerization of single-unit precursor molecules called monomers. In contrast, polyvinyl alcohol is made by dissolving another polymer, polyvinyl acetate (PVAc), in an alcohol such as methanol and treating it with an alkaline catalyst such as sodium hydroxide. […]
The huge potential of PVA in the textile industry
Textile size and fiber polyvinyl alcohol binder, with very good adhesion and film-forming properties, cheap and high quality, mainly used for pulping pure polyester or polyester-cotton yarn, and sometimes used for pulping high counts together with acrylic size of pure cotton yarn. Polyvinyl alcohol is the main raw material of vinylon fiber, which is used […]
Wichtigste industrielle Verwendungen von Polyvinylalkohol im Bauwesen
Construction adhesives and adhesives Construction adhesives made from polyvinyl alcohol include putty adhesives, paint adhesive base materials, etc., and their scale accounts for more than 40% of the total. At present, the most widely used are PVA 17-99, PVA 20-99, two medium-viscosity adhesives, and PVA24-99, PVA26-99, two high-viscosity adhesives. In addition to construction adhesives, polyvinyl […]
