Customers who do adhesive testing generally encounter what problems need to be tested? First, the purchaser requires a product quality report, which, needless to say, certainly requires testing. Secondly, the adhesive will encounter problems such as poor viscosity, poor transparency, poor heat resistance, uneven volatilization, falling off powder and so on in product quality. In addition, adhesives will also encounter problems such as embrittleness, wire drawing, bubbles, white mist, pungent odor, weak adhesion, low shrinkage and so on. Behind these problems, we need to analyze and summarize the data obtained by adhesive detection to find the problem. Today we are going to talk about the knowledge of adhesive testing.
First of all, we should know that there are many kinds of adhesives, and the problems encountered by different adhesives are also different, and the testing items focused on will be different, such as our common 502 adhesive, AB adhesive such as acrylate adhesives, which commonly need to be tested for physical properties of curing speed, adhesion, initial viscosity, brittleness and other items. The sealant, foam and other polyurethane adhesives can detect the two indicators of adhesion and hardness. UV adhesives can focus on the detection of curing speed, flexibility, adhesion, adhesion, yellowing resistance, leveling and other indicators.
First, adhesive testing products
Products suitable for adhesive testing can be divided into seven categories, specifically thermoplastic resin adhesives, synthetic rubber adhesives, thermosetting resin adhesives, adhesive raw materials, glue, tape, and construction adhesives. The specific testing products suitable for them are as follows:
1,Thermoplastic resin adhesive testing products
Cellulose ester adhesives, alkene polymers (polyvinyl acetate, polyvinyl alcohol, perchloroethylene, polyisobutylene, etc.) adhesives, polyester adhesives, polyether adhesives, polyamide adhesives, polyacrylate adhesives, a-cyanoacrylate adhesives, polyvinyl acetal adhesives, vinyl acetate copolymer adhesives, etc.
2,Synthetic rubber adhesive testing products
Neoprene rubber adhesive, styrene-butadiene rubber adhesive, butyl rubber adhesive, butyl rubber adhesive, sodium rubber adhesive, isoprene rubber adhesive, polysulfide rubber adhesive, polyurethane rubber adhesive, chlorosulfonated polyethylene elastomer adhesive, silicone rubber adhesive and so on.
3, thermosetting resin adhesive testing products
Epoxy resin adhesive, phenolic resin adhesive, urea formaldehyde resin adhesive, cyano-formaldehyde resin adhesive, silicone resin adhesive, furan resin adhesive, unsaturated polyester adhesive, acrylic resin adhesive, polyimide adhesive, polybenzimidazole adhesive, phenolic polyvinyl acetal adhesive, phenolic polyamide adhesive, phenolic epoxy resin adhesive Agent, epoxy-polyamide adhesive
4, adhesive raw material testing products
Synthetic resin emulsion, unsaturated resin, curing agent, crosslinking agent, initiator, photoinitiator, catalyst, accelerator, toughening agent, viscosifier, plasticizer, thickener, diluent and other solvents, coupling agent, emulsifier, enhancer, filler, flame retardant, retarder, oxidant, softener, dispersant, foaming agent, antioxidant (PAN, 6PPD) additives, defoamer Sterilization and preservative, colorant
5, glue testing products
UV glue, rubber glue, PVC glue, 108 glue, 107 glue, etc
6, tape testing products
Butyl rubber waterproof sealing adhesive tape, heat sealing tape, butyl tape, transparent tape, insulation tape, shielding tape, horse tape, iron composite tape, polyimide tape, foam tape, etc
7, construction adhesive testing products
White latex, wood floor glue, wallpaper glue, ceiling glue, plastic floor glue, water-based polyvinyl alcohol adhesive, 108 glue, stone dry hanging glue, marble glue, waterproof roll adhesive, polyurethane foam adhesive, sealant, glass adhesive, geotextile adhesive, extruded board adhesive, etc
Second, adhesive testing items
The testing items of adhesives can be mainly tested from seven aspects, such as physical properties, mechanical properties, electrical properties, applicability, reliability, toxic and harmful substances, and chemical analysis. Specific detection indicators are as follows:
1, adhesive physical properties test items: viscosity, softening point, appearance, density, viscosity, bonding point, softening point, curing time, PH value, applicable period and storage period test
2, adhesive mechanical properties testing items: tensile strength, shear strength, peel strength, bonding strength, splitting strength, impact strength
3, adhesive electrical properties test items: dielectric strength, dielectric constant, volume resistance, monomer content
4. Adhesive applicability test items: corrosiveness, fluidity, low temperature stability, permeability, etc
5, adhesive reliability test items: creep, fatigue strength, impact resistance, durability, aging performance, chemical reagent resistance, salt spray test, etc
|
|
UV aging test chamber |
6, adhesive toxic and harmful substances testing items: benzene, toluene, xylene, free formaldehyde, methanol, chlorinated hydrocarbons, heavy metals, non-volatile matter content
7, adhesive chemical analysis and testing items: formula analysis, composition identification, content
LIB can customize the gas fume test chamber for you, which has reached the standard you need to refer to. We are a China-based climate chamber manufacturers that specialize in environmental testing solutions. If you are looking for a cost-effective reliability test equipment, then we will be your best choice, please contact us(info@libtestchamber.com)for more information about this device or other environmental test equipment.
