3results about How to "Non-foaming" patented technology

The invention relates to a water-based zero-VOC (volatile organic compound) coating as well as a preparation method and application thereof. The water-based zero-VOC coating is prepared from a component A and a component B, wherein the mass ratio of the component A to the component B is (11: 1)-(12: 1); wherein the component A is prepared from the following components in parts by mass: 27 to 35 parts of low-hydroxyl acrylate dispersoid, 27 to 35 parts of polyurethane dispersoid, 1 to 2 parts of wetting dispersant, 0.1 to 0.3 part of defoaming agent, 17 to 27 parts of pigment filler, 0.05 to 0.2 part of color paste and 1 to 4 parts of delustering agent; the water-based ink comprises the following components in parts by weight: 30-50 parts of water-based ink, 0.3-1 part of a substrate wetting agent, 0.3-1 part of an ultraviolet light absorber, 0.3-1 part of a light stabilizer, 0.1-0.4 part of a thickening agent and 3-12 parts of deionized water. And the component B is a hexamethylene diisocyanate curing agent. No solvent is added into the coating, the VOC content is zero, and harmful substances such as heavy metal, benzene and formaldehyde are not contained.

This invention provides an environmentally friendly, moisture-resistant epoxy coating for substrates, its preparation method, and its application. The epoxy coating is obtained by mixing and curing a mixture of component A and component B. Component A includes a resin matrix, a solvent, and additives, including dispersants, defoamers, thixotropic agents, and fluorosilane coupling agents. Component B includes a curing agent. The resin matrix includes bisphenol F type epoxy resin, and the curing agent includes a ketimine curing agent. This invention utilizes the synergistic effect of bisphenol F type epoxy resin, fluorosilane coupling agent, and ketimine curing agent to actively displace interfacial water films and achieve controllable crosslinking upon contact with moisture, fundamentally solving the problem of moisture interference. This imparts excellent wet adhesion and permeability to the coating, effectively avoiding defects such as whitening of the paint film and incomplete crosslinking.

This invention discloses a synthetic resin, adhesive, and their preparation method and application for medical oxygen anesthesia masks. The synthetic resin is prepared by ring-opening reaction of KH-560 and KH-550 to generate a hydroxyl-containing siloxane intermediate, which is then used to modify polyurethane. The adhesive comprises the following components by weight: 100 parts synthetic resin, 45-95 parts reactive diluent, and 4-14 parts photoinitiator. The reactive diluent mainly includes isobornyl acrylate, N,N-dimethylacrylamide, tetrahydrofuran acrylate, and hydroxyethyl acrylate. Compared with the prior art, the adhesive prepared from the modified resin synthesized in this invention has the characteristics of rapid curing under LED light irradiation, low energy consumption, and ease of automated production; good surface drying properties, excellent flexibility, no bubbling under constant temperature and humidity, and strong adhesion to the PC material cup and PVC material airbag of the oxygen mask.