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Technology for continuously making single-component mist-solidifying silicon-ketone composition

A moisture-curing silicone and manufacturing process technology, which is applied in the field of continuous manufacturing process of single-component moisture-curing silicone composition, can solve the problems of large production operation flexibility, and achieve large and adjustable production operation High efficiency and high productivity

Active Publication Date: 2005-07-20
GUANGZHOU BAIYUN CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to overcome the deficiency of above-mentioned single twin-screw extruder technology and provide a kind of continuous manufacturing process of new one-component moisture curing silicone composition, this process does not need premixing or pretreatment, and process The parameters are more adjustable, and the production operation is more flexible

Method used

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  • Technology for continuously making single-component mist-solidifying silicon-ketone composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The components and weight ratio of the one-component moisture-curing silicone composition are:

[0031] Hydroxy-terminated polysiloxane 100

[0032] Nano active calcium carbonate (40nm) 100

[0033] Dimethicone (0.1Pa.s) 3

[0034] Methyltrimethoxysilane 25

[0035] γ-Aminopropyltriethoxysilane 0.5

[0036] Ethyl acetoacetate titanium chelate 2

[0037] The hydroxyl-terminated polysiloxane is input into the first-stage machine at 500Kg / hr, 250Kg / hr at the 1 feed port, and 250Kg / hr at the 2 feed port, and other materials are added in proportion to the corresponding positions. Control the temperature of the material at the outlet of the first-stage machine to 150°C, the temperature of the material entering the second-stage machine is less than 25°C, the temperature of the material at the outlet of the second-stage machine is 3-5°C, and the vacuum degree of the 4, 7, and 14 vacuum ports is greater than -0.095MPa. The performance of the obtained product:

[0038] Surf...

Embodiment 2

[0043] The components and weight ratio of the one-component moisture-curing silicone composition are:

[0044] Hydroxy-terminated polysiloxane 100

[0045] Nano active calcium carbonate (40nm) 100

[0046] Dimethicone (0.1Pa.s) 3

[0047] Vinyl tributylketoximosilane 5

[0048] Methyltributanoximinosilane 30

[0049] γ-Aminopropyltriethoxysilane 0.5

[0050] Dibutyltin dilaurate 0.3

[0051] The hydroxyl-terminated polysiloxane is input into the first-stage machine at 500Kg / hr, 250Kg / hr at the 1 feed port, and 250Kg / hr at the 2 feed port, and other materials are added in proportion to the corresponding positions. Control the temperature of the material at the outlet of the first-stage machine to 150°C, the temperature of the material entering the second-stage machine is less than 50°C, the temperature of the material at the outlet of the second-stage machine is less than 45°C, and the vacuum degree of the 4, 7, and 14 vacuum ports is greater than -0.095MPa. The performan...

Embodiment 3

[0057] The components and weight ratio of the one-component moisture-curing silicone composition are:

[0058] Hydroxy-terminated polysiloxane 100

[0059] Fumed silica (H15, manufactured by Waker Co.) 10

[0060] Dimethicone (0.1Pa.s) 20

[0061] Ethyltriacetoxysilane 5

[0062] Methyltriacetoxysilane 15

[0063] γ-Aminopropyltriethoxysilane 0.5

[0064] Dibutyltin dilaurate 0.3

[0065] The hydroxyl-terminated polysiloxane is input into the first-stage machine at 500Kg / hr, 250Kg / hr at the 1 feed port, and 250Kg / hr at the 2 feed port, and other materials are added in proportion to the corresponding positions. Control the temperature of the material at the outlet of the first-stage machine to 150°C, the temperature of the material entering the second-stage machine is less than 50°C, the temperature of the material at the outlet of the second-stage machine is less than 45°C, and the vacuum degree of the 4, 7, and 14 vacuum ports is greater than -0.095MPa. The performance ...

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Abstract

The present invention discloses the continuous production process of one kind of mist cured single-component silicone composition. The materials for the mist cured single-component silicone composition are added into one continuous production line for reaction to produce the mist cured single-component silicone composition. The materials include polysiloxane, stuffing, plasticizer, crosslinking agent, coupling agent and catalyst; and the continuous production line includes one serial double screw extruder set, one metering unit, one cooler and one packing unit. The present invention has high production efficiency, great production capacity, low material and power consumption, low cost and stable product quality, and is suitable for industrial production.

Description

technical field [0001] The invention relates to a manufacturing process of a one-component moisture-curing silicone composition. Background technique [0002] Usually, the one-component moisture-curing silicone composition is packaged in an airtight container and taken out of the container when used. The composition exposed to the air reacts with water in the air at room temperature and solidifies into an elastomer, which is usually used as Sealants and adhesives. Because of its single-package, solvent-free, and room-temperature curing, it is extremely convenient to use and has superior performance. It is widely used in industries such as construction, electronics, and machine manufacturing. The components of a one-component moisture-curing silicone composition generally include: (1) polysiloxane; (2) fillers, such as calcium carbonate, white carbon black, etc.; (3) plasticizers, such as simethicone , mineral oil, etc.; (4) catalysts, such as organotin, organotitanium, etc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B7/46B29C48/395C08L83/04
CPCB29C47/366B29C48/385B29C48/39B29C48/40
Inventor 缪明松王洪敏庞学新
Owner GUANGZHOU BAIYUN CHEM IND
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