Method for manufacturing mono-component water-dispersing room temperature dewatering silicon sulfide ketone seal gum

A technology for vulcanizing silicone and manufacturing method, applied in chemical instruments and methods, adhesives, other chemical processes, etc., can solve the problems of long time, increase filler content, product performance decline, etc., and achieve convenient use, easy cleaning, and stable storage. Effect

Active Publication Date: 2008-02-06
CHENGDU GUIBAO NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) The storage period of a single component is not long, so it must be formulated into two components,
[0007] (2) It cannot be dehydrated and cross-linked at room temperature or takes a long time,
[0008] (3) The ratio of filler to α, ω ~ (dihydroxy) polydiorganosiloxane polymer emulsion is unreasonable, increasing the content of filler will greatly reduce the performance of the product, which has no practical value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Add 100 parts of hydroxy silicone oil, 1.5 parts of dodecylbenzenesulfonic acid, 1.5 parts of sodium dodecylbenzenesulfonate and 66 parts of deionized water into a reaction kettle with a stirrer, stir and mix well . Transfer the mixed solution into a high-pressure homogenizer for 3 times, then add the mixture to the above-mentioned reaction kettle, react at a temperature of 30°C for 48 hours, add 1.5 parts of nonionic surfactant OP-10, and heat the reactant at a temperature of 25°C Add 6.7 parts of sodium silicate aqueous solution whose dry matter amount is 50% to , then add 1.3 parts of dibutyltin dilaurate aqueous emulsion whose dry matter amount is 40%, mix well, and react at room temperature for 48 hours to obtain α, ω~( Dihydroxy) polydiorganosiloxane polymer emulsion.

[0033] (2) At a temperature of 25°C, add the above-mentioned emulsion, 150 parts of calcium carbonate with a particle size below 6.5 μm, 1 part of hydroxyethyl cellulose, and 1 part of Foamast...

Embodiment 2

[0035] (1) Add 100 parts of hydroxy silicone oil, 6 parts of dodecylbenzenesulfonic acid and 66 parts of deionized water into a reaction kettle with a stirrer, stir and mix evenly. Transfer the mixed solution into a high-pressure homogenizer for 3 times, then add the mixture to the above reaction kettle, react at a temperature of 5°C for 24 hours, and add an aqueous solution of sodium silicate with a dry matter of 50% to the reactant at a temperature of 25°C 6.7 parts, and then 1.3 parts of dibutyltin diacetate aqueous emulsion with a dry matter content of 40%, mixed uniformly, and reacted at room temperature for 48 hours to prepare an α, ω-(dihydroxy) polydiorganosiloxane polymer emulsion.

[0036] (2) At a temperature of 25°C, the above emulsion, 0.5 parts of γ-methacryloxypropyltrimethoxysilane, 0.5 parts of γ-(2,3 glycidoxy)propyltrimethoxysilane, and the particle size Add 150 parts of calcium carbonate below 6.5 μm, 1 part of hydroxyethyl cellulose, and 1 part of Foamaste...

Embodiment 3

[0038] (1) Add 100 parts of hydroxy silicone oil, 2 parts of dodecylbenzenesulfonic acid and 66 parts of deionized water into a reaction kettle with a stirrer, stir and mix evenly. Transfer the mixed solution into a high-pressure homogenizer for 3 times, then add the mixture to the above reaction kettle, react at a temperature of 5°C for 24 hours, add 1.5 parts of nonionic surfactant OP-10, and heat the reactant at a temperature of 25°C Add 1 part of sodium silicate aqueous solution with a dry matter amount of 50% in the medium, then add 5 parts of a dry matter amount of 40% dibutyl tin dioctoate aqueous emulsion, mix well, and react at room temperature for 48 hours to obtain α, ω~(2 hydroxy) polydiorganosiloxane polymer emulsion.

[0039](2) At a temperature of 25°C, add the above emulsion, 2 parts of vinyltrimethoxysilane, 142 parts of magnesium hydroxide, 1 part of hydroxyethyl cellulose, and 1 part of Foamaster-75 defoamer into a planetary mixer and stir evenly , the one-...

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Abstract

The present invention relates to a manufacturing method of single component water dispersivity room temperature evaporated sulfuration silicones sealing gum. The manufacturing method is characterized in that the method includes the steps as follows: wherein the raw materials are all parts by weight; 100 shares of anion hydroxide radical silicon oil, 1.5 to 6 shares of anion active agent, 0 to 6 shares of non-ion active agent and 60 to 150 shares of de-ionized water are processed in a high pressure viscolizer for one to three times, the mixture is added into a reaction kettle with a blender, and the mixture reacts for 24 to 72 hours under the temperature of 5 to 80 degree centigrade, then 0.5 to 20 shares of metal alkaline silicate or silica sol and 0.02 to 5 shares of stanniferous catalyzing compound are added for curing 2 to 3 days to get Alpha and Omega to (dihydroxy) dimer organic siloxane polymer latex; the latex, 0 to 5 shares of organic silicon resin acceptor, 50 to 180 shares of inorganic filler, 0.1 to 1 shares of thickening agent and 0.1 to 1 shares of foam killer are added into a kneader for evenly mixing to get single component water dispersivity room temperature evaporated sulfuration silicones sealing gum.

Description

technical field [0001] The invention relates to a one-component water-dispersible room-temperature dehydration vulcanization silicone sealant and a manufacturing method thereof, belonging to the field of polymer sealing materials and its manufacturing. Background technique [0002] US Patent No. 2,891,920 discloses a method for emulsion polymerization of polydiorganosiloxane in the presence of a surfactant and dehydration of the emulsion to form a film, which can be used to prepare a protective film. Hyde believes that in order to make the emulsion have sufficient strength to achieve the purpose of use after being dehydrated and cross-linked to form a film under ambient conditions, the molecular weight of polydiorganosiloxane must reach a relatively high value, and here ultra-high molecular weight conditions, the emulsion is extremely unstable. Hyde pointed out that to prepare a stable polydiorganosiloxane emulsion, an acid catalyst is preferred when using an anionic surfac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/10C08L83/14C08K5/54C09J183/14
Inventor 邱泽皓王楠袁素兰王有治
Owner CHENGDU GUIBAO NEW MATERIAL
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