Single-component polyurethane foam joint mixture and preparation method thereof

Abstract

The invention provides a single-component polyurethane foam joint mixture and a preparation method thereof. The formula of the single-component polyurethane foam joint mixture comprises the following components in parts by weight: 14-22 parts of mixed polyether, 1.2-2 parts of silicone oil, 0.2-0.8 part of a water diversion agent, 15-17 parts of C14-C17 alkane liquid paraffin, 0.6-1.2 parts of a catalyst, 2-4 parts of an insecticide, 2-6 parts of a degradation agent, 1.5-4.5 parts of a slow-release fertilizer, 0.5-1.5 parts of an aging color indicator, 38-40 parts of polyisocyanate MDI, 14-18 parts of a foaming agent and 1-3 parts of CO2. The single-component polyurethane foam caulking agent has the following beneficial effects: 1, the product adopts an insecticide, so that corresponding agricultural crops and plants are prevented from being damaged by insect pests; the fertilizer utilization rate is increased, the crop yield is increased, compound fertilizer is added, and accurate and comprehensive fertilization is achieved; 3, a water diversion agent and a degradation agent are added, so that the growth of roots of crops is promoted, the product is quickly and naturally degraded, and the cleaning cost after use is reduced; and 4, using is convenient, aerosol packaging is used, the requirements of modern agriculture are met, and storage stability and safety are good. The invention also discloses a preparation method of the single-component polyurethane foam joint mixture.

Description

technical field [0001] The invention belongs to the field of polyurethane foam gap filler, and in particular relates to a single-component polyurethane foam gap filler applied to degradable agriculture, long-acting compound fertilizer, insecticide and a preparation method thereof. Background technique [0002] The full name of polyurethane foaming agent is one-component polyurethane foam caulking agent, commonly known as single-component foaming agent, PU-Foam, PU caulking agent, etc. It is a modern product of the cross-combination of aerosol potting technology and polyurethane foam technology. Specifically, it is a special polyurethane product filled with one-component polyurethane prepolymer, foaming agent, catalyst and other components in an aerosol can. When the material is sprayed from the aerosol can, the foamed polyurethane material will expand rapidly and react with the air or the gaseous water in the contacting matrix to form a foam. The cured polyurethane foam cau...

AI Technical Summary

Problems solved by technology

With the development of modern agriculture and animal husbandry, patent 201610476163.6 discloses a preparation method of a high-efficiency slow-release insect repellent polyurethane caulking agent, using insect repellent liposome suspension, nano-borax powder, nano-realgar powder, combined polyether, Isocyanate, propylene butane, dimethyl ether, flame retardant, etc., the invention provides a high-efficiency slow-release insect repellent polyurethane sealant; patent 201710621160.1 discloses a mildew-proof and insect-repellent polyurethane Its preparation method is prepared by using polyether polyol, aromatic isocyanate, flame retardant, catalyst, silicone oil, foaming agent, diatom mud, anti-mildew component, insect repellent component, etc. Mildew-repelling insect-type polyurethane sealant, none of the above patents mentions degradable, fattening and other properties

Images