A food-grade one-component deketoxime type silicone adhesive and preparation method thereof

A silicone adhesive, one-component technology, used in adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve the problem of poor mechanical properties, affect the performance and quality of automatic dishwashers, and cannot achieve organic The silicone adhesive is resistant to boiling and other problems, and achieves the effects of good mechanical properties, accelerated surface drying speed, and improved construction and mechanical strength.

Active Publication Date: 2022-02-08
JIANGSU KANGAITE ENVIRONMENTAL ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties of the currently used silicone adhesives are poor, which cannot meet the manufacturer's requirements for the boiling resistance of organic silicone adhesives (75°C-80°C, 300h), and cannot meet the relevant provisions of the national standard GB-4806.11-2016, thus affecting automatic washing. Performance qualities of bowls

Method used

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  • A food-grade one-component deketoxime type silicone adhesive and preparation method thereof
  • A food-grade one-component deketoxime type silicone adhesive and preparation method thereof
  • A food-grade one-component deketoxime type silicone adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A food-grade one-component deketoxime type silicone adhesive, the preparation method of which is:

[0038] In parts by mass, 350 parts of 107 glue with a viscosity of 20000mPa·s, 350 parts of 107 glue with a viscosity of 50000mPa·s, 70 parts of α, ω-dihydroxypolymethylphenylsiloxane with a viscosity of 50000mPa·s, 80 parts Silicone oil with a viscosity of 1000mPa·s is added to a planetary mixer and stirred under vacuum for 10 to 15 minutes, then 50 parts of methyl tributylketoxime silane and 10 parts of vinyl tributylketoxime silane are added and stirred under vacuum for 15 to 20 minutes, and then 25 parts of TS-530 (the surface has been treated with hexamethyldisiloxane and baked at 105°C for 1 hour), 15 parts of ureidopyrimidinone surface-modified fumed silica, 10 parts of modified fumed silica, first slowly stirred until the second The two fillers are fully infiltrated, then vacuumed and stirred for 40 minutes, then add 900 parts of GZT-2500 (diatomite treated with 1...

Embodiment 2

[0048] A food-grade one-component deketoxime type silicone adhesive, the preparation method of which is:

[0049] In parts by mass, add 700 parts of 107 glue with a viscosity of 20000mPa·s, 70 parts of α, ω-dihydroxypolymethylphenylsiloxane with a viscosity of 50000mPa·s, and 60 parts of silicone oil with a viscosity of 1000mPa·s into a planetary mixer for pumping Stir in vacuum for 10-15 minutes, then add 40 parts of methyl tributylketoxime silane, 8 parts of vinyl tributyl ketoxime silane and stir in vacuum for 15-20 minutes, then add 30 parts of TS-530 (surface treated with hexamethyl di Siloxane treatment and baked at 105°C for 1h), 15 parts of ureidopyrimidinone surface-modified fumed silica, 15 parts of modified fumed silica, first stir slowly until the second filler is fully infiltrated, then vacuumize and speed up Stir for 40min, then add 960 parts of GZT-2500 (diatomaceous earth treated with 1.5% hexadecyltrimethoxysilane, bake at 105°C for 1h), 8 parts of carbon blac...

Embodiment 3

[0052] A food-grade one-component deketoxime type silicone adhesive, the preparation method of which is:

[0053] In parts by mass, add 650 parts of 107 glue with a viscosity of 50000mPa·s, 70 parts of α, ω-dihydroxypolymethylphenylsiloxane with a viscosity of 50000mPa·s, and 110 parts of silicone oil with a viscosity of 1000mPa·s into a planetary mixer for pumping Stir in vacuum for 10-15 minutes, then add 40 parts of methyl tributylketoxime silane, 8 parts of vinyl tributyl ketoxime silane and stir in vacuum for 15-20 minutes, then add 30 parts of TS-530 (surface treated with hexamethyl di Siloxane treatment and baked at 105°C for 1h), 15 parts of ureidopyrimidinone surface-modified fumed silica, 15 parts of modified fumed silica, first stir slowly until the second filler is fully infiltrated, then vacuumize and speed up Stir for 40min, then add 880 parts of GZT-2500 (diatomaceous earth treated with 1.5% hexadecyltrimethoxysilane, bake at 105°C for 1h), 8 parts of carbon bla...

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Abstract

The invention provides a food-grade one-component deketoxime type silicone adhesive, which has the following composition in parts by weight: 700 parts of α, ω-dihydroxy polydimethylsiloxane, α, ω ‑Dihydroxypolymethylphenylsiloxane 50‑100 parts, first filler 100‑1000 parts, second filler 1‑90 parts, plasticizer 10‑150 parts, crosslinking agent 5‑70 parts, carbon black 1-10 parts, 1-8 parts of catalyst, 0.1-40 parts of tackifier; wherein, the viscosity of the α, ω-dihydroxy polydimethylsiloxane is 5000-70000mPa·s; the first filler It is diatomite, silica powder or titanium dioxide surface-modified by a silane coupling agent; the adhesive of the present invention has good water resistance, corrosion resistance and mechanical properties, and meets the relevant regulations in the national standard GB‑4806.11‑2016 , has broad industrial application prospects.

Description

technical field [0001] The invention relates to the technical field of silicone adhesives, in particular to a food-grade one-component deketoxime type silicone adhesive and a preparation method thereof. Background technique [0002] Deketoxime type silicone rubber adhesive is a type of RTV-1 silicone rubber adhesive prepared with ketoxime-containing silane as a crosslinking agent. It is a type of silicone that is cured into an elastomer by moisture in the air. The product has the advantages of moderate vulcanization, low odor of by-product ketoxime released during vulcanization, and no corrosion to other metals except slight corrosion to copper. It is a kind of RTV-1 silicone rubber adhesive with good cost performance. ; Mainly used in sealants and adhesives in construction, electrical and electronic industries, automobiles and other industries. It has a wide range of applications and is currently the most sold variety in the market. [0003] The automatic dishwasher touch ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/04C09J11/04C09J11/08C09J11/06
CPCC09J183/04C09J11/04C09J11/08C09J11/06C08K2201/011C08L2205/025C08L2205/035C08L83/04C08K3/36C08K9/06C08K9/04C08K9/08C08K9/00C08K7/26C08K3/04C08K5/5465C08K13/06
Inventor 孙玉明
Owner JIANGSU KANGAITE ENVIRONMENTAL ENG GRP CO LTD
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