Polyvinyl alcohol (special for textile sizing)
Key words:
Polyvinyl alcohol
Biodegradable plastic
Forbidden plastic
Technical standards:
100-27H
Classification:
Product Description
Main performance
1. Dissolve fast in water, low dissolution temperature. At 88-95 ℃,30-60 minutes time completely dissolved, at the same time do not need special kettle type dissolution equipment for dissolution, easy to use, energy saving.
2. Good adhesion.
3. Oil resistance, acid and alkali resistance is good.
4. Excellent film forming.
5. Good biodegradability.
6. Product storage stability is good, long time storage does not deteriorate.
Product specification code description
Example
It is also customary to have the following representation
Product quality requirements
|
Specifications |
Project |
||||||
|
Degree of alcoholysis/[% (Mole)], ≥ |
Viscosity/(mPa · s) |
Volatile/%,≤ |
pH |
Ash /%,≤ |
Transparency/%,≥ |
Purity /%,≥ |
|
|
100-27H |
99.0 |
22～28 |
6.0 |
7 to 10 |
2.5 |
90.0 |
87.0 |
|
100-31H |
99.0 |
29～34 |
6.0 |
7 to 10 |
2.5 |
/ |
87.0 |
|
100-40H |
99.0 |
35～44 |
6.0 |
7 to 10 |
2.5 |
/ |
87.0 |
|
100-50H |
99.0 |
45～55 |
6.0 |
7 to 10 |
2.5 |
/ |
87.0 |
|
100-60H |
99.0 |
56～65 |
6.0 |
7 to 10 |
2.5 |
/ |
87.0 |
Physical and chemical properties
A polymer compound, non-toxic, tasteless, non-polluting, the appearance of a white or light yellow flocculent solid. Instant glue yarn with vinyl acetate as the main raw material, methanol as solvent for polymerization to produce polyvinyl acetate, polyvinyl acetate by alcoholysis to produce polyvinyl alcohol, after crushing, drying.
Formula:-(C2H4O)n-
Molecular weight: 44 * n
False specific gravity: 0.21-0.30g/cm3
has good thermal stability
No change occurs below 140 ℃, yellowing begins at 160 ℃, intermolecular dehydration occurs at 170-200 ℃, intramolecular dehydration occurs above 200 ℃, and complete decomposition occurs above 300 ℃.
Good bonding and film forming performance
Aqueous solution has good adhesion, such as fiber, wood paper and other porous materials adhesive performance is very good, but the aqueous solution at low temperature easy gel.
It is easy to form a film, the film is colorless and transparent, has good mechanical strength, the surface is smooth and not sticky, water vapor can pass through the film, but the transmittance of ammonia, oxygen and carbon dioxide is very low, and the influence of external temperature change on the film is small.
good blending
It has good stability with starch, gum, synthetic resin, cellulose derivatives and various surfactants.
Instant glue wire and its membrane can resist most organic solvents such as oil, lubricant and hydrocarbon
At room temperature, the H value of its aqueous solution is generally 7-10, the viscosity is stable, and it is almost not affected by weak acids, weak broken or organic solvents (esters, ketones, higher alcohols and hydrocarbons), but it can be degraded by strong oxidants such as peroxides.
With long chain polyol esterification, etherification and acetalization and other chemical properties
Has the function of biodegradation
The degradation rate was highest when the degree of polymerization was about 1700.
Previous Page
Related recommend
Dissolve fast in water, low dissolution temperature. At 88-95 ℃,30-60 minutes time completely dissolved, at the same time do not need special kettle type dissolution equipment for dissolution, easy to use, energy saving.
Dissolve fast in water, low dissolution temperature. At 88-95 ℃,30-60 minutes time completely dissolved, at the same time do not need special kettle type dissolution equipment for dissolution, easy to use, energy saving.
Dissolve fast in water, low dissolution temperature. At 88-95 ℃,30-60 minutes time completely dissolved, at the same time do not need special kettle type dissolution equipment for dissolution, easy to use, energy saving.
Dissolve fast in water, low dissolution temperature. At 88-95 ℃,30-60 minutes time completely dissolved, at the same time do not need special kettle type dissolution equipment for dissolution, easy to use, energy saving.
Product Message
Our Mission
SoC for AI, making life smarter
Our Vision
Become an excellent end-side AI chip general computing platform company.
