Production method for portable self-spraying bi-component foam caulking agent

Abstract

The invention discloses a production method for a portable self-spraying bi-component foam caulking agent. Polyols (polyether polyol, polyester polyol and vegetable oil polyol), a catalyst, silicone oil, a foaming agent, other accessories and the like are poured into a special galvanized iron pot, and are injected with a propellant to form a component A; one or more of crude MDI (diphenyl-methane-diisocyanate), liquefied MDI or prepolymers thereof are poured into another special galvanized iron pot, and are injected with the propellant to form a component B. When the portable self-spraying bi-component foam caulking agent is used, pot valves of the components A and B are opened, and the two components are mixed through a mixing gun for foaming formation after being automatically sprayed.

Description

technical field [0001] The invention relates to a production method of a portable self-spraying type two-component foam caulking agent. Background technique [0002] Polyurethane foam caulking agent is commonly known as foaming agent, styrofoam, PU caulking agent, etc. PU FOAM in English is the product of the cross combination of aerosol technology and polyurethane foam technology. It is a special polyurethane product filled with polyurethane prepolymer, blowing agent, catalyst and other components in a pressure-resistant aerosol can. When the material is sprayed from the aerosol can, the foamy polyurethane material will expand rapidly and react with the air or the moisture in the contacted substrate to form a foam. The cured foam has multiple effects such as caulking, bonding, sealing, heat insulation, and sound absorption. It is an environmentally friendly, energy-saving, and easy-to-use building material. Sound insulation, especially suitable for sealing and waterproofi...

AI Technical Summary

Problems solved by technology

[0003] There are more domestic reports on two-component polyurethane composite materials, which are widely used in exterior walls, pipes, and cold storage insulation industries. Special equipment is required, the investment is high, and it is not easy to carry. There are no reports on door and window filling.

[0004] It can be said that the polyurethane foam sealant used in the door and window filling and sealing industry in the domestic market is all in the form of a single component, but the single-component foam sealant has the defects of slow curing time, short storage period, and easy pulverization in winter. The invention introduces a production method of a two-component foam caulking agent, which is simple in operation and low in cost, and needs to be used in conjunction with another patent (two-component foam caulking agent glue gun) applied by our company.

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