The structure, composition and characteristics of NBR adhesive

Nitrile rubber adhesive structure, composition and characteristicsNitrile Rubber is a copolymer of butadiene and propylene wax emulsion polymerization, which has excellent oil resistance. Due to the polarity in the macromoleculeNitrile base, so it has good adhesion performance, high tensile strength, and is suitable for polar polymers The substance has good compatibility, and the content ofnitrile group has a great influence on its The properties have a significant impact. Currently, acrylic is generally used as an adhesivenitrile the content is the copolymer of 30%～40%.

DingNitrileThe rubber adhesive is mainly made of butylnitrilerubber, in order to improve the adhesion To improve the combined strength, modified resins such as modified phenolic resins, alkyd resins, polyvinyl chloride resins, etc. can be added. Chlorinated rubber can be added to improve adhesion to metal. In order to improve adhesion, diesters, turpentine gum or coumarone resin, etc. can also be used; in order to increase softness and cold resistance. Dibutyl phthalate, tricresyl phosphate, etc. can be used; anti-aging agents such as trimethyldihydroquinoline can ensure the stability of the solution. At the same time, it can also improve the adhesion and heat resistance, and improve the stability of the polymer , you can use a mixture of phenyl book-tetramine and phenyl-p-phenylenediamine;Carbon black as filler. It can increase the strength and adhesion; it can use acetone, methyl ethyl ketone, dichloroethane, etc., which are the most soluble rubber, as solvents, and can also be mixed with ethyl acetate, xylene, etc.

dingnitrileRubber has the following characteristics:

①Because of its excellent oil resistance, it can be bonded to soft polyvinyl chloride plastic materials that are usually difficult to bond and have a large amount of plasticizer migration;

②After proper modification, it can widely bond various adherends, and has high bonding strength;

③Have a certain degree of heat resistance.

But it also has the following weaknesses:

①Easy to change color when exposed to heat and light;

②The price is higher than other solvent-based rubber adhesives. Butterfly eye rubber adhesive is suitable for bonding various materials such as metal, plastic, synthetic rubber, wood, fabric and leather , especially suitable for bonding soft polyvinyl chloride materials such as polyvinyl chloride sheets, polyvinyl chloride foam plastics, and polyvinyl chloride fabrics. Examplesuch as polychloride Vinyl floor paste, PVC and metal, wood, hardboard, etc. manufacturing composites.