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

A nail-free glue and viscosity technology, which is applied in the direction of adhesives, non-polymer adhesive additives, adhesive types, etc., can solve the problems of limiting the practical application of nail-free glue, less than 2.0MPa, and poor initial adhesion, and achieve shortening Construction period, improved initial tack, good tear strength effect

Active Publication Date: 2016-08-24
GUANGZHOU JOINTAS CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Raw material composition and mass parts in the embodiment 1 of table 1

[0066]

[0067] The preparation method of nail-free glue is as follows:

[0068] S1. Add 15 parts of plasticizer and 38 parts of light calcium carbonate into the vacuum kettle, heat up to 110°C while stirring, decompress and vacuumize, heat and stir to dehydrate until the water content is less than 1000ppm;

[0069] S2. Stop the machine and cool down to 30°C, fill with nitrogen to release the vacuum to normal pressure, and then prepare the dehydrated glue;

[0070] S3. Open the kettle, add 20 parts of silane-terminated polymer and 20 parts of reinforcing resin to the dehydration mortar, close the kettle, decompress and vacuumize to remove the air and moisture in the kettle, stir at a medium speed for 10 minutes to mix the raw materials evenly;

[0071] S4. Shut down and open the kettle, add 4 parts of hydrophobic fumed silica, stir at high speed for 20 minutes to disperse evenly;

[0072] S5. ...

Embodiment 2

[0076] Raw material composition and mass parts in the embodiment 2 of table 2

[0077]

[0078]

[0079] The preparation method of the nail-free glue is as in Example 1.

Embodiment 3

[0081] Raw material composition and mass parts in the embodiment 3 of table 3

[0082]

[0083] The preparation method of the nail-free glue is as in Example 1.

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J171/00C09J175/04C09J11/04
CPCC08K2201/014C08L2205/03C08L2205/035C09J11/04C09J171/00C09J175/08C08L71/00C08L71/02C08K13/02C08K2003/265C08L75/08C08L75/04
Inventor 潘守伟黄俊鑫陈权陈中华
Owner GUANGZHOU JOINTAS CHEM
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