Waterborne single component protective film adhesive
  • 2022-11-08 16:54:46
  • admin

Water-based single-component protective film adhesive is an environmentally friendly adhesive prepared by using natural polymer or synthetic polymer as adhesive and water as solvent or dispersant instead of toxic organic solvents that pollute the environment.Existing water-based adhesives are not 100% solvent-free and may contain limited volatile organic compounds as additives to their water-based media in order to control viscosity or fluidity. The advantages are mainly non-toxic, no pollution, no combustion, safe use, easy to achieve clean production technology, etc., disadvantages include slow drying speed, poor water resistance, poor frost resistance.

Classified by materials

Polyvinyl alcohol water-based adhesives, vinyl acetate water-based adhesives, acrylic acid water-based adhesives, polyurethane water-based adhesives, epoxy water-based adhesives, phenolic water-based adhesives, silicone water-based adhesives, rubber water-based adhesives.

Classified by application

Water-based adhesive for construction, water-based single-component protective film adhesive for packaging, water-based adhesive for automobile, water-based adhesive for shoemaking, water-based adhesive for daily use.

According to the solvent classification of water-soluble and emulsion adhesive properties and modification.

The APU is a new type of polyurethane system with water instead of organic solvents as a decentralized medium. It is also called water -decentralized polyurethane, water polyurethane or water -based polyurethane.Water -based polyurethane uses water as a solvent, pollution -free, safe and reliable, excellent mechanical properties, good compatibility, and easy modification.

The APU adhesive is non -toxic and pollution, and the polymer volume allows it to form an excellent viscosity that has excellent performance. It has the advantages of low temperature resistance, flexibility, good adhesion performance, and wide gelatin material. The chain shows excellent impact resistance, fatigue, low temperature resistance, and designability of performance. The adhesive layer can meet the adhesion needs between different materials from flexibility to rigidity;At present, the synthesis method of water -based polyurethane adhesive has matured, mainly in the following methods:

(1)Part of the hydrophilic group in the polyurethane resin structure to make it self -emulsified.

(2)Acetone method: water-based single-component protective film adhesive is prepared with high viscosity prepolymer first, and then acetone is added to reduce the viscosity, and then hydrophilic monomer chain expansion is added to water under high speed stirring, through strong shear action to disperse it in water, emulsification after decompressive distillation recovery solvent is prepared PU water dispersion system.

(3)End-sealing isocyanate method: select appropriate sealer, protect the end-NCO group of water-sensitive isocyanate, make it inactivated, and then add chain extender and crosslinking agent co-emulsion to make emulsion for use, through a certain temperature and special catalyst, regenerated into -NCO end-group, chain extension to prepare waterborne polyurethane.

Sinograce Chemical produces Water-based Removable film glue

Properties

This product is a new type of protective film glue with high performance developed by special technology, which has obvious advantages over the general protective film glue. The film has higher cohesion, fast drying speed, good release effect, no residue, no pollution.It has good resistance to low temperature and high temperature, and no harmful gas escape.

Parameter

Appearance

Milky white liquid

Solid content

40-55

Viscosity

100-1000CPS

PH value

7-9

Shelf life

6 Months

Packing Specifications

50KG200kg

Application

Mainly used for PE film and other protective film substrate, aluminum plastic plate, aluminum profile, stainless steel, electronic products, artificial stone, floor tile and so on. Can also be used for PET and other protective film.

The proportion of dilution of the main agent and the amount of curing agent should be adjusted according to the customer's requirements for stickiness. Under the condition of a mesh roller with a certain number.

Can be adjusted according to customer requirements of high viscosity, medium viscosity, low viscosity protective film. Special protective film glue should be used for micro - adhesive and ultra - adhesive protective film.

According to the different substrate, the coating thickness can be adjusted to make different viscous protective film.

The dosage of curing agent is 2-5 ‰ of the main agent. Stir well before use.

Sinograce Chemical produces Water-based Peelable glue,Please click here

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