Type of polyester resin Polyester resin is the abbreviation of unsaturated polyester adhesive
Release time:
2022-12-29 11:17:25.059
Metal materials will adhere to various oil stains during processing and storage. According to the nature of oil pollution, it can be divided into saponified oil and non-saponified oil. Saponified oil is animal and vegetable oil, which mainly exists in drawing oil, polishing paste and other products. From the structure, it is an ester structure, which can be saponified with alkali to form soluble substances; Non-saponifiable oil is mineral oil.
Type of polyester resin Polyester resin is the abbreviation of unsaturated polyester adhesive. Unsaturated polyester adhesive mainly consists of unsaturated polyester resin, initiator, accelerator, filler, thixotropic agent, etc. A linear structure (see linear polymer) polyester resin containing - CH=CH - double bond in the main chain can be mixed with olefinic monomers, such as styrene, acrylate, vinyl acetate, etc., and polymerized into insoluble and insoluble products at room temperature under the action of initiator and accelerator. The English abbreviation of unsaturated polyester is UP. It is mainly used to produce coil coating. Polyester resin is divided into saturated polyester resin and unsaturated polyester resin. The unsaturated polyester adhesive is mainly composed of unsaturated polyester resin, pigments and fillers, initiators and other additives. The adhesive has low viscosity, easy wetting, good processability, high hardness, good transparency, high brightness, rapid curing under pressure at room temperature, good heat resistance and excellent electrical properties. The disadvantages are large shrinkage rate, low adhesive toughness, poor chemical medium resistance and water resistance, which are used for non-structural adhesives. It is mainly used for gluing glass fiber reinforced plastic, hard plastic, concrete, electrical tank seal, etc. Saturated polyester resin (oil-free alkyd resin) is mainly used for the production of coil coatings. According to the different properties and structures of the resin, it can be used for the top coat, primer and back coat of the coil coatings, as well as the saturated polyester resin used for printing ink and thermal coated coil.
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