Guangdong PET High Temperature Adhesive Manufacturer Waste Disposal Tape Special Adhesive 9169

Description :

　　Guangdong PET high-temperature adhesive manufacturer offers cheap prices for specialized adhesives for waste disposal tapes

　　1、 Performance characteristics of Guangdong PET high-temperature adhesive: PSA916 series organic silicone adhesive is a solution based on polysiloxane rubber and resin, with additives added. It is a widely used high-temperature pressure-sensitive adhesive. It can be mixed with other methyl siloxane pressure-sensitive adhesives to obtain specific properties. It can be used in a wide temperature range and can bond various low surface energy, difficult to bond materials such as organosilicon, fluoropolymers, polyolefins, etc.

　　Note: The ratio of adhesive is based on the ratio of original adhesive: diluent: BPO=100:65:1.5-2.0. The solvent is removed at 90 ℃ for 2 minutes and cured at 160 ℃ for 6 minutes; Test conditions: temperature of 25 ℃, humidity of 55-65%, PET film thickness of 38um, and dry adhesive thickness of 22-25um.

　　3、 Scope of application of Guangdong PET high-temperature adhesive

　　As a pressure-sensitive adhesive, it can be applied to substrates such as PET and aluminum foil using traditional high-temperature tape coating equipment to produce special performance pressure-sensitive adhesive tapes. It has good high temperature resistance and chemical resistance, and can also be used for shielding in the electroplating process of printed circuit boards, SMT process, FPC, PCB board, sandblasting, coating, high-temperature baking paint, gold plating or electroplating process, as well as insulation wrapping and fixing of electronic, electrical and other products. 4、 Construction Instructions

　　Due to differences in substrate, coating equipment, curing cycle, and required characteristics, the amount of curing agent (peroxides such as BPO or DPP can be used, and BPO is recommended) added is 1.5-2.5% of the adhesive amount. To ensure the mixing of curing agent and adhesive, first completely dissolve it in the solvent and then add it to the adhesive solution, stir and mix well. At the same time, a filter with a mesh size of 180 or more should be used once before coating to prevent the mixing of color paste or other impurities particles.

　　The use of curing agents can accelerate the curing speed or allow curing at low temperatures, as well as improve the cohesive strength of the adhesive and enhance its adhesion performance on the substrate. The mixed peroxide dispersion can only be used for one to two days because peroxides quickly lose their activity in solvents. The sufficient dispersion of adhesive and peroxide during the mixing process is a necessary condition to ensure the consistency of the finished product's performance.

　　The SH916 series adhesive can be directly coated using traditional tape coating equipment. Prior to coating, it can be further diluted with a soluble solvent such as [insert solvent], and the working solution concentration should be around 35%. The specific concentration can be determined based on individual equipment and experience. When using solvents for coating, it is necessary to ensure good ventilation and comply with the safety precautions and relevant regulations of the solvent supplier.

　　In some applications, due to insufficient bonding between the adhesive and the backing material, it may be necessary to apply a layer of primer before applying the adhesive. The primer material must be cured before use, and the curing conditions depend on the performance of the equipment, the type of substrate, and the formula used.

　　Surface vulcanization cycle: 80-90 ℃ * 2 min for solvent removal to ensure that there is no solvent present in the adhesive when entering the curing zone for vulcanization; At 160-170 ℃ for 6 minutes, the adhesive strength, cohesive strength, and initial adhesion are further strengthened through thermal curing. The exact conditions required for complete vulcanization depend on the length, temperature, and efficiency of the heating furnace, the type of curing agent, and the type of substrate used, and must be determined through equipment testing.

　　If the equipment and substrate allow for higher curing temperatures, the curing time can be shortened. Compared with low-temperature curing, increasing the curing temperature can achieve the cohesive strength of the adhesive in a shorter time.

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