Classification standard of glue Commonly used types of glue

Glue is the centerpiece that connects two materials, mostly presented in water. What are the types of glue? Glue is mainly categorized according to the properties of adhesive material, physical form and hardening method. What are the characteristics of the various categories of glue?

According to the adhesive main sticky material properties classification:

1, animal glue; 2, plant glue; 3, inorganic substances and minerals; 4, synthetic elastomers; 5, synthetic thermoplastic materials; 6, synthetic thermosets; 7, thermosetting, thermoplastic materials and elastomers composite.

Classified by the physical form of the adhesive:

1, solvent-free liquid code for 1; 2, organic solvent liquid code for 2; 3, water-based liquid code for 3; 4, paste, paste code for 4; 5, powder, granular, block code for 5; 6, sheet, film, mesh, tape code for 6; 7, filament, strips, rods code for 7.

Classification of adhesive hardening method

Low temperature hardening code for a; room temperature hardening code for b; heating hardening code for c; suitable for a variety of temperature region hardening code for d; and water reaction curing code for e; anaerobic curing code for f; radiation (light, e-beam, radiation) curing code for g; hot-melt cold hardening code for h; pressure-sensitive adhesion code for i; coagulation or cohesion code for j, other code for k. j, the other code is k.

Classification of adhesives according to the classification of the sticky material

Multi-class material code for A; wood code for B; paper code for C; natural fiber code for D; synthetic fiber code for E; polyolefin fibers (excluding E) code for F; metals and alloys code for G; hard to stick to the metal (gold, silver, copper, etc.) code for H; metal fiber code for I, inorganic fiber code for J; transparent inorganic fiber code for J; transparent inorganic fibers code for J, inorganic fibers code for I. code for J; transparent inorganic materials (glass, gemstones, etc.) code for K; opaque inorganic materials code for L; natural rubber code for M; synthetic rubber code for N; hard to stick to the rubber (silicone rubber, fluoroelastomer, butyl rubber) code for O, hard plastic code for P, plastic film code for Q; leather, synthetic leather code for R, foam code for S; hard to stick to the plastic and film (fluorine plastic, polyethylene, polypropylene, etc.) code for S; hard to stick to the film (fluorine plastic, polyethylene, polypropylene, etc.) code for S Polyethylene, polypropylene, etc.) code for T; biological tissues, bones and dental materials code for U; other code for V.

According to the application of commonly used glue classification

1, dressing-type coating:

Acrylic: easy to use, room temperature more than a dozen minutes on the table to dry. Has good electrical and physical properties,

fungus-resistant. Low or no heat release during curing, protects against damage to heat sensitive components. Easy to rework.

Polyurethane type: good moisture resistance, chemical resistance, very good electrical properties. Most one-component polyurethane coatings need to be applied very carefully, with strict control of the coating and curing environment. Polyurethane coatings are solderable and can be used with a soldering iron to remove components and return to service relatively easily.

Silicone type: has the highest flexibility, high humidity resistance and fungus resistance. With chemical resistance and easy rework characteristics. Has very good electrical properties and can also have good thermal properties. Solvent free silicone coatings can be heat cured or moisture cured.UV CURED TYPES: Most of the above chemical types can be UV cured. Solvent-free products cure in seconds under UV light/visible light. In addition to acrylic, urethane, and silicone UV-cured Conformal Coating, there are also epoxy and acrylic-modified urethane UV-cured Conformal Coating.

Potting:

Epoxy: One or two-component, good adhesion to most substrates, chemical resistant. Very good electrical properties, curing basically no volatiles release.

Silicone type: one-component or two-component, can be 100% solid, very user-friendly. High purity, low toxicity and excellent weatherability. Operating temperatures from -100 to 600oF (-37-135oC). Can be had with optimum hot loop performance.

Polyurethane type: one or two component products with good adhesion to most materials and resistance to abrasion. Good electrical properties with high drop strength. Very good low-temperature flexibility with a maximum operating temperature of 250oF (121oC).UV CURED TYPE: One or two component, 100% solids. Cures in 10-20 seconds when exposed to UV or visible light. Fast curing improves efficiency.

2, sealing:

Acrylic type: acrylic sealant has good adhesion to most surfaces and remains plastic when exposed to UV light or other environments.

General purpose, used in many outdoor installations. Can be coated after curing.

Polysulfide: One or two component, 100% solids. Very durable, mainly used for sealing aerospace and industrial windows. Polysulfide type is resistant to all fumes.

Polyurethane type: polyurethane sealants are mostly one-component, good adhesion and extensibility. Are non-corrosive and flexible products that can bond many substrates, still perform well over a wide range of temperatures, and are resistant to most chemicals and a variety of climatic environments.

Silicone: A versatile class of sealants with the widest operating temperature range (-76oF to 600oF). One-component silicone cures wet to form a tough solid. Very good general purpose sealants with good resistance to weathering, abrasion, moisture and ozone. Silicone sealants are generally easy to extrude and mold and easy to handle.