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Silicane modified polyurethane cementing sealing glue and method for making same

A technology of adhesive sealing and silane modification, which is applied in the direction of chemical instruments and methods, adhesives, epoxy resin glue, etc., can solve problems such as lack of adhesion, damage to the health of producers and users, and environmental pollution, and achieve Extended service life, improved UV stability, and good adhesion

Inactive Publication Date: 2005-03-16
ZIBO HITECMEN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] Since the existing polyurethane adhesive / sealant uses more or less toxic solvents in the formula or production process, it has certain environmental pollution and environmental protection problems, which brings great harm to the health of producers and users. certain damage
[0023] In addition, as a one-component polyurethane adhesive sealant for automobiles, similar products at home and abroad have basically no adhesion to inorganic materials such as glass and aluminum, such as SIKAFLEX's 255, TRESTAT's 8590 or BETASAD's 551, etc. Model products, its bonding strength with glass and aluminum is close to 0, which limits its application range in the automobile production industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Prepare silane-modified polyurethane adhesive sealant according to the following formula and process:

[0068] (1) According to the formula, take 20kg of hydroxyl-terminated ternary polyoxypropylene ether with an average molecular weight of 4500-6000 and add it to the stirred reactor, heat up to 80°C in a water bath within 30 minutes, stir and vacuum under the condition of a vacuum of 0.09MPa. Degas for 1 hour, cool down to 60°C, stop stirring and vacuumize;

[0069] (2) Add 3kg of toluene diisocyanate, heat up to 80°C in a water bath within 30 minutes, and react for 2 hours under nitrogen protection conditions;

[0070] (3) Add 15 kg of dibutyl phthalate, and stir for 1 h at a temperature of 80° C. and a vacuum of 0.09 MPa;

[0071] (4) Add 15kg of acetylene carbon black, after mixing evenly, stir for 1h under the condition of vacuum degree of 0.09MPa, and cool down to 60°C;

[0072] (5) Add 0.01kg of anilinomethyltriethoxysilane under nitrogen protection conditions,...

Embodiment 2

[0086] Prepare silane-modified polyurethane adhesive sealant according to the following formula and process:

[0087] (1) According to the formula, take 45kg of hydroxyl-terminated polytetrahydrofurfuryl ether with an average molecular weight of 6000-8000 and 38kg of dioctyl phthalate into the stirred reactor, and heat up to 120°C in a water bath within 60min. Stirring under the condition of 0.095MPa, vacuum degassing for 2h;

[0088] (2) Add 50kg of titanium dioxide, continue to stir for 2h under the condition of vacuum degree of 0.095MPa, and cool down to 80°C;

[0089] (3) Add 10kg of 1,5-naphthalene diisocyanate, heat up to 100°C in a water bath within 60min, react for 3h under a vacuum of 0.095MPa, and cool down to 80°C;

[0090] (4) Add 0.1kg γ-aminopropyltriethoxysilane, 0.3kg dibutyltin dilaurate and 0.2kg tetramethylene β-(3,5-di-tert-butyl-4 -Hydroxyphenyl) pentaerythritol propionate, continue stirring reaction 2h;

[0091] (5) The viscosity of the detected produc...

Embodiment 3

[0096] Prepare silane-modified polyurethane adhesive sealant according to the following formula and process:

[0097] (1) Take 32.5 kg of polyoxypropylene-castor oil polyol copolyether with an average molecular weight of 5500-6500 according to the formula and add it to the stirring reaction kettle, heat up to 100 ° C in a water bath within 45 minutes, and stir under the condition of a vacuum of 0.085 MPa , Vacuum degassing for 2 hours, cool down to 80°C, stop stirring and vacuumize;

[0098] (2) Add 7kg of diphenylmethane diisocyanate, heat up to 100°C in a water bath within 45min, and react for 3h under nitrogen protection;

[0099] (3) Add 26.5kg of dinonyl phthalate, and stir for 2 hours at a temperature of 80°C and a vacuum of 0.09MPa;

[0100] (4) Add 32.5kg of calcium carbonate, after mixing evenly, stir for 2 hours under the condition of vacuum degree of 0.09MPa, and cool down to 80°C;

[0101] (5) Add 0.0325kg of 3-glycidoxypropyltrimethoxysilane under nitrogen prote...

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Abstract

The invention provides a silicane modified polyurethane cementing sealing glue and method for making same, which comprises end hydroxy polyether 20-45, isocyanate 3-10, plasticizer 15-38, mineral filler 15-50, silicane coupling agent 0.01-0.1 catalyst 0.01-0.3, anti-oxidant 0.01-0.2. The invention also discloses the process of preparation.

Description

technical field [0001] The invention belongs to the field of adhesives, in particular to an adhesive / sealant based on polyurethane or such polymer derivatives. Background technique [0002] Sealant (Sealant) is a material used to fill voids (voids, joints or seams, etc.). When in use, it is a fluid or extrudable amorphous material, which can be embedded and sealed, and can be stably bonded to the substrate by drying, temperature changes, solvent volatilization or chemical crosslinking, and gradually shaped into a Plastic solid, viscoelastic or elastic sealing materials. [0003] In the past 30 years, sealants have been widely used in industrial and civil fields such as construction, civil engineering, automobiles, ships, electrical, communications, and aerospace. [0004] The types of amorphous sealants mainly include silicone, polyurethane, polysulfide rubber, acrylic, styrene-butadiene rubber, butyl rubber, asphalt and oily caulking, among which the performance is better...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09K3/10
Inventor 陈福泰白渝平
Owner ZIBO HITECMEN CHEM
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