الوصف

Name:polyvinyl butyral;
English abbreviations:PVB;
Features: excellent softness and flexiability;
Type: thermoplastic resin;
Molecular formula:C*4H*8 Cl N3 S;
Density:1.*7g/cm3;
Molecular weight:****5k;
Refractive index:1.**8(*0℃);
Water absorption:≤0.4%;
Softening temperature:****5℃;
Vitrification temperature:****4℃;
Solubility: dissolved in most alcohol / ketone / ether / ester organic solvents, insoluble in carbon hydroxyl solvents, such as petroleum solvents, such as gasoline;
Appearance: white powder;
Quality standard:
Index nameSD*1 SD*2 SD*3 SD*4 SD*5 SD*6 SD*7
Viscosity (*0% ethanol solution)/mPa.s <5 5～*0 *1～*0 *1～*0 *1～*0 *1～**0 >**0;
Degree of acetalization/% *8~*8 *8～*8 *8～*8 *8～*8 *8～*8 *8～*8 *8～*8;
Acid value/(mgKOH/g)≤4.0 4.0 2.0 2.0 1.0 1.0 1.0;
Ash content/%≤0.*0 0.*0 0.*8 0.*8 0.*0 0.*0 0.*0;
Volatiles/%≤ 3.0 3.0 3.0 3.0 3.0;
Mass fraction of polyvinyl alcohol polybutanol/%≥ *8.0 *8.0 *8.0 *8.0 *8.0 *8.0 *8.0;
Transparency (ethanol solution): transparent or micro transparency;
Application:
1. Printing ink: bonding material;
2. Paint industry: corrosion resistant coatings, strong antirust ability, adhesion and water resistance of metal bottom coatings and cold proof paint;
3. Ceramic industry: manufacturing pattern of bright color film;
4. Resin industry: making press plastics that replace nonferrous metals such as steel and lead, which can be made into a variety of adhesives;
5. Textile industry: manufacturing fabric treatment agent and yarn ;
6. Food industry: Manufacture of nontoxic packaging materials;
7. Paper industry: making paper treatment agent;
8. Printing industry: flexo, intaglio, Flexo/Gravia, screen printing, heat transfer;
9. Other: laminated glass, adhesive, modified plasticizer, compatibility with other polymers, antishrinking agent, stiffening agent and other waterproof materials.