Environment-friendly high-strength nail-free glue not containing organic tin and preparation method thereof

Abstract

The invention discloses environment-friendly high-strength nail-free glue not containing organic tin and a preparation method thereof. The nail-free glue is prepared from, by mass, 10-50 parts of a silane-terminated polymer, 10-50 parts of reinforced resin, 5-25 parts of a plasticizer, 20-55 parts of a reinforced filler, 1-5 parts of a rheological agent, 0,5-3 parts of a water absorbent, 1-6 parts of a coupling agent, 0.2-1.5 parts of a stabilizer and 0.1-1 part of a non-organic tin catalyst, wherein the silane-terminated polymer contains a polyurethane group. The product has the advantages of being large in initial cohesion, rapid in solidification, high in strength, capable of bonding various base materials, capable of performing construction on the humid surface, capable of coating surfaces, resistant to heat and water and the like, does not contain toxic volatile solvents or organic tin catalysts, is healthy, environmentally friendly and capable of replacing a traditional nail, effectively lowers noise and dust pollution generated in the construction process, saves man hours and is wide in application prospect.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to an environmentally friendly high-strength nail-free adhesive without organic tin and a preparation method thereof. Background technique [0002] Nail-free glue is a new type of building structure glue with strong adhesion and fast curing speed that can replace nails. It has light weight, good sealing, strong corrosion resistance, good joint elasticity, easy construction, no dust and noise pollution during installation, environmental protection, green and beautiful, and has important roles in construction, automobile, machinery manufacturing, transportation, etc. Practical significance and market prospects. [0003] At present, the nail-free adhesives on the market are mainly divided into two types: solvent volatile type and moisture curing type, and solvent-based nail-free adhesives are the main ones. Solvent-type nail-free glue is prepared by dissolving solvent-type neoprene...

AI Technical Summary

Problems solved by technology

In addition, most nail-free glues currently on the market have problems such as poor initial adhesion and low strength, including the environmentally friendly nail-free glue disclosed in CN104449523A and a nail-free glue disclosed in CN104610900A. The tensile shear strength after 24 hours of curing or The tensile strength is less than 2.0MPa, which greatly limits the practical application of nail-free glue

[0005] Therefore, it is necessary to seek a new environmentally friendly nail-free glue, which overcomes the shortcomings of the existing nail-free glue that needs to be added with an organic tin catalyst, low activity, and insufficient strength.

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