2 results about "Diisononyl phthalate" patented technology

The application discloses a high-temperature-resistant polyvinyl chloride adhesive tape and a preparation method thereof, and belongs to the technical field of polymer materials and adhesive products. The high-temperature-resistant polyvinyl chloride adhesive tape comprises the following raw materials in parts by weight: synergistically modified polyvinyl chloride, diphenyl phosphine oxide, chlorinated polyethylene, diisononyl phthalate, antimony trioxide, calcium stearate, zinc stearate, an antioxidant and a leveling agent; the synergistically modified polyvinyl chloride is obtained by introducing catechol structures on the surface of polyvinyl chloride through dopamine self-polymerization deposition, forming a dynamic borate ester structure with 3-aminobenzoic acid, and constructing a Si-O-Si network structure through hydrolytic condensation reaction of octa(3-aminopropyl)silsesquioxane and N-(beta-aminoethyl)-gamma-aminopropyl triethoxysilane. The dopamine-borate ester-silicone synergistic network structure is constructed, and the diphenyl phosphine oxide is introduced for function regulation, so that the heat resistance, mechanical properties and dimensional stability of the polyvinyl chloride adhesive tape are significantly improved.

This invention discloses a high-performance sealant and its preparation method, belonging to the field of sealant technology. The method includes adding 10-20 parts of diisononyl phthalate to 100 parts of hydroxyl-terminated polybutadiene and stirring; adding 60-90 parts of filler and stirring; adding 18-43 parts of composite functional additives and stirring to obtain a premixed base material; adding 15-25 parts of polymethylene polyphenyl polyisocyanate and 4-8 parts of silane coupling agent; adding 0.1-0.3 parts of composite catalyst; and then adding an ultraviolet absorber and an antioxidant, stirring to obtain a catalytically modified mixture; vacuum degassing and curing to obtain a high-performance sealant. The high-performance sealant prepared by this invention improves flexibility and displacement resistance, significantly increases elongation at break, and achieves a displacement capacity level of 20. It can flexibly adapt to slight deformations in building structures caused by temperature fluctuations and foundation settlement, avoiding cracking and detachment, and maintaining good fireproof sealing performance over a long period.