CCPChangchun. -- BP 24

Brand：CCPChangchun.
Model：BP 24

Product description：
   BP 24It's a polyvinyl chloride.（Polyvinyl Alcohol, AbbreviationsPVA），It's a few synthetic high-molecular polymers with water solubility.，Its indicators include, inter alia, the degree of aggregation.、alcohol resolution and other special performance indicators。
  PVAThe main production process is：ethylene acetate is condensed by polymer to produce ethylene acetate.，And then it's olated into polyethylene.。

Product characteristics：
1.Solubility：Soluble in water，Water Solution Transparency。Solubility is largely determined by polymericity and alcohol resolution.。As the ol's resolution drops,，Increased water solubility，Dissolved temperature is reduced accordingly，The ol's resolution is...88%It's the best water solubility.。PVAA polar solution that is soluble with hydroxyl radicals.（Glycerin.、Ethylene diol、Acetic acid、Acetyldehyde, etc.），But gel.，Insoluble to general nonpolar organic solvents and inorganic acids（H 2SO4、HCLWait.）。
2.membrane：PVAHydrosol soluble membrane，The membrane formed in a colorless and transparent manner.，It's a good mechanical strength.，It's clean, not sticky.。The membrane can go through the water vapour.，But hydrogen.、Oxygen、The pass rate for gases like CO2 is low.，External temperature changes have less effect on the membrane.。
3.Stick it together.：PVAWater soluble energy and fibres、Timber、Paper and other perforated matter glued，It's good to stick together.。
4.Solubility：PVAPowder and starch.、Gum.、Synthetic resin、The cellulose derivatives and the various surfactants are soluble and have better stability.。
5.Persistence Chemical：In constant heat.，PVAWater solution.PHIt's worth a lot of money.5-7Left and right.，Glue steady.，Almost no weak acid.、Low-alkali or organic solvents（esters、Acetone.、Advanced ethanol、Hydrocarbons）Impact，It's very oil-resistant.，But they can be peroxides like this.H2O2Waiting for decomposition.（It's a slurizer.）。
6.Heat-resistant.：PVASoftening by heat，Heated to130-140℃，It's almost unchanged in nature.，The color turns yellow.。Yes.160℃Heated for a long time.，Darken Colors。200℃Dehydration between molecules，Reduced water solubility。Yes.200℃And that's it.，Molecular dehydration。Close.300℃Hour，Completely decomposed to water.、Acetic acid、Acetyldehyde and pedyldehyde（No adverse effects during the upper drying process.）。

Technical indicators：
Glue(cps):44~50  
Alkaline(mole%)：86~89    
Swift.(wt%Below):5  
Grey(wt%Below):0.5    
PHValue：5~7    
Average Polymeric(DP)：2400~2500  
Molecular weight(MW)：118000~124000