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Antibacterial silane polyether adhesive and preparation method thereof

A technology of silane polyether and silane-modified polyether, applied in the field of polyether glue, can solve problems such as poor antibacterial ability and unstable bonding performance, and achieve the effects of improving antibacterial performance, increasing surface energy and increasing surface tension

Inactive Publication Date: 2020-02-11
佛山市金德利粘胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Conventional silane-terminated polyether adhesives have poor antibacterial ability and unstable bonding performance, which need to be improved

Method used

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  • Antibacterial silane polyether adhesive and preparation method thereof
  • Antibacterial silane polyether adhesive and preparation method thereof
  • Antibacterial silane polyether adhesive and preparation method thereof

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preparation example Construction

[0034] The preparation method of described modified polysiloxane comprises:

[0035] (1) Mix methylepoxysilane, γ-aminopropylmethyldiethoxysilane and potassium hydroxide, heat up to 140-150°C and react for 20-60 minutes, and then add acetic acid to neutralize to obtain an intermediate product;

[0036] (2) Mix the intermediate product with soybean fatty acid and toluene, react at 150-160° C. for 0.5-1 h, and obtain the modified polysiloxane after distillation.

[0037] The present invention selects methyl epoxy silane as a matrix, and under the action of coupling agent γ-aminopropylmethyl diethoxy silane, fatty acid substances are grafted into the structure of methyl epoxy silane to obtain improved It has high surface energy. After adding silane polyether adhesive system, it can effectively increase the surface energy of the silane polyether adhesive system and improve its adhesive performance; it should be noted that although fatty acid substances Has higher surface energy, ...

Embodiment 1

[0053] Silane polyether glue formula:

[0054]

[0055] Modified polysiloxane formula:

[0056] raw material Dosage (parts) Methyl epoxy silane 72 γ-Aminopropylmethyldiethoxysilane 6 Potassium hydroxide 1 acetic acid 1 soybean fatty acid 12 Toluene 1

[0057] Antimicrobial formulation:

[0058]

[0059]

[0060] Preparation:

[0061] (1) Preparation of modified polysiloxane:

[0062] A. Mix methylepoxysilane with γ-aminopropylmethyldiethoxysilane and potassium hydroxide, then heat up to 145°C and react for 26 minutes, then add acetic acid to neutralize to obtain an intermediate product;

[0063] B. Mix the intermediate product with soybean fatty acid and toluene, react at 155° C. for 0.5 h, and obtain the modified polysiloxane after distillation.

[0064] (2) Preparation of antibacterial agent

[0065] C. Add zinc oxide and calcium carbonate to the phosphoric acid solution, stir and react for 0.5h; obtain the fir...

Embodiment 2

[0071] Silane polyether glue formula:

[0072]

[0073]

[0074] Modified polysiloxane formula:

[0075] raw material Dosage (parts) Methyl epoxy silane 78 γ-Aminopropylmethyldiethoxysilane 7 Potassium hydroxide 1.5 acetic acid 2 soybean fatty acid 13 Toluene 1

[0076] Antimicrobial formulation:

[0077] raw material Dosage (parts) Zinc oxide 15 calcium carbonate 15 phosphoric acid 60 silver 2 Ceria 2 diatomite 15

[0078] Preparation:

[0079] (1) Preparation of modified polysiloxane:

[0080] A. Mix methylepoxysilane with γ-aminopropylmethyldiethoxysilane and potassium hydroxide, heat up to 145°C for 40 minutes, and then add acetic acid to neutralize to obtain an intermediate product;

[0081] B. Mix the intermediate product with soybean fatty acid and toluene, react at 150° C. for 0.8 h, and obtain the modified polysiloxane after distillation.

[0082] (2) Prepa...

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Abstract

The invention discloses an antibacterial silane polyether adhesive. The antibacterial silane polyether adhesive is mainly prepared from silane modified polyether resin, a filler, a solvent, a reinforcing agent, a light stabilizer, an antioxidant, a water removing agent, a catalyst, a coupling agent and an antibacterial agent. According to the invention, a phosphoric acid double-salt antibacterialagent having good compatibility with the silane polyether adhesive is prepared, and modified polysiloxane (a fatty acid substance) with high surface energy is introduced into the silane polyether adhesive, so the silane polyether adhesive is effectively improved in surface energy and enhanced in bonding performance. The invention further discloses a preparation method of the antibacterial silane polyether adhesive. The method is simple in process and suitable for popularization.

Description

technical field [0001] The invention belongs to the field of polyether glue, in particular to an antibacterial silane polyether glue and a preparation method thereof. Background technique [0002] Modified silane polyether adhesive is a new generation of building sealant developed after polysulfide adhesive, silicone adhesive and polyurethane adhesive. In the silane-terminated polyether molecule, due to the hydrophobicity of the Si-C bond contained, the silane-terminated polyether sealant is less sensitive to moisture than the ordinary polyurethane sealant system, which leads to the storage of the sealant. Stability has been greatly improved. Due to the Si-O-Si bond in the cured crosslinking structure, the silane-terminated polyether sealant has excellent weather resistance, water resistance, chemical medium resistance, antifreeze resistance, fuel resistance, mechanical transmission oil resistance and heat resistance. The silane-terminated polyether sealant system has neit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J171/02C09J11/08C09J11/04C09J11/06C08G77/38C08G77/26C08G77/18
CPCC08G77/18C08G77/26C08G77/38C08K2003/0806C08K2003/2213C08K2003/2296C08K2003/265C08K2201/014C09J11/04C09J11/06C09J11/08C09J171/02C08L83/08C08K13/06C08K9/12C08K7/26C08K3/22C08K3/08C08K5/544C08K3/26
Inventor 刘宏垣
Owner 佛山市金德利粘胶有限公司