PVB resin production

Product introduction

Polyvinyl butyral resin, PVB powder tree

Content: 99.50% origin: China (huakai) packing: 25 kg

English name: polyvinyl butyral

Abbreviations: PVB resin

Type: thermoplastic resin

Physical properties

The density of 1.07 g/cm3.

Molecular weight from 30 to 45 k.

The refractive index of 1.488 (20 ℃).

Bibulous rate is not greater than 4%.

Softening temperature 60-65 ℃.

Glass transition temperature of 66-66 degrees (varies in degree of polymerization).

Solubility: soluble in most of the alcohol/ketone/ether ester organic solvents, insoluble in carbon hydroxyl kind of solvents, petroleum solvent such as gasoline.

Application field

Was used to make safety glass membrane interlayer materials, the safety glass good transparency, impact strength, widely used in aviation and automobile industry.

Coatings used in the manufacture of anti-corrosion coatings, rust resistance is strong, adhesion, water resistance, good metallic coatings and bottom protective paint. Ceramic industry used in the manufacture of decorative pattern bright film flowers

The paper, but instead of ceramic color paper. Resin industry used in the manufacture of plastics instead of steel, non-ferrous metals such as lead pressure, can match into a variety of adhesive. Widely used in wood, ceramics, metal, plastic,

Leather, adhesive laminated material, etc. Textile industry agents used in the manufacture of fabric and yarn tube. The food industry used in the manufacture of non-toxic packaging materials. Papermaking industry used in the manufacture of paper treatment.

In addition, can also be used in the manufacture of preshrunk agent, stiffening agent and other waterproof materials.

Can be used in the printing industry of Flexo, gravure, embossed (who/Gravia), silk screen printing, thermal transfer, because of its soluble in alcohol, non-toxic, no residues calendar peculiar smell, can be used in the food industry

Industry is sensitive to the smell of the packaging, such as tea, cigarettes, etc. Because for cationic resin, with a strong anion glass surface has excellent adhesion, especially suitable for glass decoration

Print.

Polyvinyl alcohol and butyl aldehyde condensation product. Structure is white powder, relative density 1.08 ~ 1.10. Soluble in methanol, ethanol, ketone, halogenated aromatic solvents. With the development of developing and sebacic acid esters plasticizer, and cellulose nitrate, phenolic resin, epoxy resin have good intermiscibility, etc. With high transparency, cold resistance, impact resistance, resistance to ultraviolet irradiation. With metal, glass, wood, ceramic, such as fiber products have good adhesive power. The polyvinyl alcohol soluble in water, add butyl aldehyde and under stirring catalyst such as hydrochloric acid or sulfur acid, in 15 ~ 50 ℃ under the temperature of acetal reaction, the generation of acetal are washed, centrifugal drying for a quick polyvinyl butyral. Mainly used in the manufacture of laminated glass, coating and adhesive agent, etc.

application

Printing ink

Good water resistance combined with good adhesion, good fluidity and excellent pigment wetting (making ideally used in the production of polyvinyl butyral resin pigment paste), poly (vinyl alcohol)

Butyral resin bond series is suitable for printing ink, if properly formulate formula, the ink is odourless tasteless. Because in the resin polyvinyl butyral series are easy dissolved in solvent does not contain harmful substances such as ethanol, of organic substrate such as cellulose acetate membrane, polyester film and polystyrene and has good adhesion to the aluminum foil, they are for food packing offset and gravure printing ink is ideal.

Here, SD, low molecular weight of SD - 1-2, SD - 3 is preferred. On the surface of the problem, such as pretreatment of polyolefin film adhesion to the surface by mixed with ammonia alkyl.

The silane to improve can silk screen printing ink and SD - 5 and SD - 6 preparation.

Heat sealing paint

With polyvinyl butyral materials for the coating can be heat sealing and thermal activation, if need to lower the heat sealing temperature, can achieve by adding a small amount of plasticizer amount. If, on the other hand, should be higher.

Temperature of heat sealing, by adding like cellulose nitrate hard resin to achieve.

Bi-component paint

Good intermiscibility and active hydroxyl in the presence of the polyvinyl butyral resin ideally associated with other resin suitable for binding material for paint.

With urea, melamine, phenol and poly (isocyanate resin reaction after get the stability of the membrane. All depends on the amount of hardening resin, the film is no longer a thermoplastic. polyethylene.

Alcohol butyral improve flexibility of paint film and adhesive.

Room temperature hardening paint can pass the polyvinyl butyral urea resin mixed with the appropriate solvent harmful substances to make and use nothing. Produced by the paint membrane resistance to water and alcohol,

Scratch resistant and strong. For example, they can be used to seal all kinds of floor. Good light fastness make these kinds of paint can also be used in outdoor.

Polyvinyl butyral combined with melamine resin made from metal and metal foil with light, yellowing of the lacquer that bake. Polyvinyl butyral added to phenolic paint to improve adhesion, flexibility and liquidity.

SD - 3 / phenolic resin mixture priority for cans and bucket wall paint with the lacquer that bake (less gold paint). Phenolic resin adhesive can be polyvinyl butyral meek.

Polyvinyl butyral used in two-component polyurethane paint, can alone can also be used with other no more alcohol components together. In case they can active thickening agent.

To use. Can use polyvinyl butyral resin, paint consistency will be effected according to the need to change. Membrane curing, cross-linked polyvinyl butyral and hardener. They also accelerate the early drying and increase the membrane.

Kindliness. Polyvinyl butyral should always dissolved in anhydrous ester or ketone, because alcohol is not applicable for two-component PU paint.

Ceramic mixture

Based on their excellent wet, wet strength and well in the low to no formation during 300-400 ℃ temperature corrosive gas and no residue decomposition, polyvinyl butyral resin.

Don't be a good fit for the scraper manufacture process of ceramic mixture with a binder.

Anti-seepage coating

Asphalt: PVB can be used to make waterproof asphalt and plasticizer, as from the old asphalt sheet on migration of seepage control primer.

Wood: with polyvinyl butyral materials for the primer for wood, especially in the singular wood can anticoagulating paint drying and curing of the material on the role of the barrier layer.

Paper: to use polyvinyl butyral, such as SD - 3 for the bottom coating on the backing paper, isolate without producing non-stick paper that can be a more economic use of polysiloxane.

At the end of coating

Wash primer: PVB film for steel, iron, aluminum, zinc and other metal showed very good adhesion. The adhesion performance by adding phosphoric acid can be further improved. polyethylene.

Alcohol butyral, corrosion resistant paint and a mixture of phosphoric acid is called \"wash primer. They are used as the underlying and together with a suitable coating to prevent rust and extension in the metal surface.

Enhance the primer: in order to further improve the water resistance and adhesion, polyvinyl butyral and reactive resin such as phenolic resin. This also and phosphoric acid with corrosion resistant paint.

Party is called \"enhanced primer. If phosphate is joining in the process of manufacture, the primer is called single-component primer or factory. Must pay attention to ensure the container is phosphoric acid corrosion resistance. In a group.

Points primer, phosphate is stir before just applied to join. Generally applicable period only for a few hours, and the factory primer will remain available in 6 to 12 months.

Strengthen the primer will be long-term protection of metal surface without the use of surface coatings. Polyvinyl butyral not only can be used for traditional chromate primer, but also can be used to have good resistance to salt.

Mist sex without chromate primer.

Modification of plasticizer

Due to their chemical composition, polyvinyl butyral very smooth film. Their meek performance at low temperature by adding plasticizer (plasticizing) increases, plasticizer will also reduce the solution

The viscosity of the fluid.

Polyvinyl butyral resin with many plasticizer compatible, for example: Lin phthalate ester (such as Lin phthalate butyl ester and butyl benzyl) citric acid ester (such as triethyl citrate

And acetyl tributyl citrate esters)

Sebacic acid ester (such as sebacic acid dibutyl)

Phosphate ester

Convergent plasticizer such as polyethylene glycol (peg) and urine aldehyde resin (for example, Resamin HF450) can also be used.

As with other polymer solubility and intermiscibility, plasticizer compatible also depends on the degree of polymerization and polarity.

The compatibility with other polymers

Polyvinyl butyral series of various types can be mixed in any proportion to each other. They also with many other resin combination, such as:

Epoxy resin

Urine aldehyde resin

Ketone resin

Melamine resin

Natural resin (such as shellac and darma resin)

Cellulose nitrate

Polyethylene imine

Polyisocyanate resin

When mixed with reactive resin, polyvinyl butyral usually assume the role of a convergent plasticizer, improve flexibility and adhesion of metal.

Polyvinyl butyral acetal with series of resin molecular weight and degree of different and different. Polyvinyl butyral show the greatest of compatibility with other resins. Should always into line test to check the compatibility first.

pigment

Polyvinyl butyral resin and are normally used in paint industry of pigments and fillers is easily compatible, they are excellent pigment wetting is due to the existence of free hydroxyl.