What Is an Adhesive Solvent?

Solvent sensitive adhesive refers to an adhesive containing a volatile organic solvent. It does not include water-based adhesives.

Solvent-based adhesives refer to adhesives for polymer modified asphalt waterproofing membranes and polymer waterproofing membranes. They are mainly a variety of solvent-based adhesives used in conjunction with coils. Such as RA-86 type neoprene binder, SBS modified asphalt binder, etc. suitable for modified asphalt coils; polyurethane primer base treatment agent for EPDM rubber coils, CX-404 chlorine Butyl rubber adhesive; LYX-603 adhesive used in chlorinated polyethylene film. ^[1]

The production process of this type of adhesive and waterproof coating is mainly a process in which solid rubber or plastic is plasticized, kneaded, and then dissolved in a solvent to form a uniform glue solution. The equipment used is mainly a rubber cutting machine, a rubber refining machine, a melting pot, a splitting machine, etc.

The production process of solvent-based neoprene is shown in the figure below.

Most of the solvent-based wood coatings used for interior decoration are

Natural rubber, synthetic rubber, and synthetic resin can be dissolved in organic solvents to make glue solution, resin solution or varnish. In addition, there are many cellulose derivatives, such as nitrocellulose,

The latex collected from the rubber plantation or the natural coagulated miscellaneous rubber is processed by the rubber factory to solidify, wash, sheet, compact, granulate and dry to make various block, sheet or granular perimeter natural rubber. . Solvent-based rubber adhesive is prepared by mixing natural rubber with a compounding agent and dissolving it in an organic solvent, such as 120 ^# solvent gasoline. Slightly different according to different uses, formulations and processes. One of the raw materials used is a raw rubber liquid which does not need to be vulcanized, and the other is a rubber liquid to be vulcanized.

Gasoline rubber is a traditional solvent-based rubber adhesive with mature technology. Its characteristics are: gasoline glue uses 120 ^# solvent gasoline with a fast volatilization speed as the solvent. Therefore, it will dry quickly after brushing. Gasoline rubber has a low solid content, mainly solvents, and it is cheap. Gasoline rubber does not need an elixir to increase viscosity. Gasoline rubber production process is simple. Environmental requirements.

Solvent-based adhesives use natural rubber as the main base material. Although raw rubber has good properties such as elasticity and strength, various compounding agents must be added to meet the requirements of various uses. The main additives are: vulcanizing agent; accelerator; antioxidant; reinforcing agent; plasticizer.

Generally speaking, before the solvent dissolves the compounded rubber, the natural rubber is first plasticized, such as a cigarette sheet used as a gasoline glue. Its hardness, elasticity and viscosity are high, and the process performance is poor. The viscosity can be reduced by plasticizing , Improve the good dispersion of fillers and complexing agents, thereby improving process performance. After mastication, the natural rubber is mixed with various compounding agents, and then the solvent is used to dissolve the mixed rubber to obtain a solvent-based rubber adhesive paste. Regardless of plasticizing or mixing, the roll temperature should generally not exceed 50 ° C. ^[4]