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A kind of antibacterial silane modified sealant and preparation method thereof
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A silane-modified, antibacterial technology that is applied in the field of sealants to achieve excellent and long-lasting antibacterial performance
Active Publication Date: 2022-03-01
SHANGHAI DONGDA CHEM
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Description
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Problems solved by technology
This sealant does not contain other harmful volatile components such as free isocyanate agents
Method used
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Embodiment 1
[0091] A kind of antibacterial silane modified sealant, it is made by following preparation method:
[0092] (1) Put 40g DINP and 90g PCC-P into the reaction kettle, stir at 500r / min at high speed while passing steam to raise the temperature to 110°C, vacuumize and dehydrate under negative pressure for 2 hours, after testing the moisture content, cool down to 50°C and add 50g of SMP 8010, 1g of B75, 3g of Silquest A-171, 2g of Dynasylan 1189, 4g of Aerosil R974 were stirred evenly and cooled by circulating cooling water.
[0093] (2) After 1 hour, add 0.4g of dibutyltin dilaurate at a temperature lower than 50°C, stir for half an hour under the condition of cooling water circulation, and discharge to obtain an antibacterial silane-modified sealant.
Embodiment 2
[0095] A kind of antibacterial silane modified sealant, it is made by following preparation method:
[0096] (1) Put 40g DINP and 90g PCC-P into the reaction kettle, stir at 500r / min at high speed while passing steam to raise the temperature to 110°C, vacuumize and dehydrate under negative pressure for 2 hours, after testing the moisture content, cool down to 50°C and add 50g of SMP 8020, 1g of B75, 3g of Silquest A-171, 2g of Dynasylan 1189, 4g of Aerosil R974 were stirred evenly and cooled by circulating cooling water.
[0097] (2) After 1 hour, add 0.4g of dibutyltin dilaurate at a temperature lower than 50°C, stir for half an hour under the condition of cooling water circulation, and discharge to obtain an antibacterial silane-modified sealant.
Embodiment 3
[0099] A kind of antibacterial silane modified sealant, it is made by following preparation method:
[0100](1) Put 40g DINP and 90g PCC-P into the reaction kettle, stir at 500r / min at high speed while passing steam to raise the temperature to 110°C, vacuumize and dehydrate under negative pressure for 2 hours, after testing the moisture content, cool down to 50°C and add 50g of SMP 8030, 1g of B75, 3g of Silquest A-171, 2g of Dynasylan 1189, 4g of Aerosil R974 were stirred evenly and cooled by circulating cooling water.
[0101] (2) After 1 hour, add 0.4g of dibutyltin dilaurate at a temperature lower than 50°C, stir for half an hour under the condition of cooling water circulation, and discharge to obtain an antibacterial silane-modified sealant.
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Abstract
The present application relates to a method for preparing antimicrobial silane-modified sealant, which comprises the following steps: (1): at the first temperature, uniformly mix the plasticizer and the first filler additive, and treat the The mixture system is subjected to negative pressure dehydration to obtain a first reaction mixture; (2): at a second temperature, uniformly mix the first reaction mixture, the antibacterial silane-modified polymer and the second filler additive to obtain a second reaction mixture; ( 3): uniformly mixing the second reaction mixture, the catalyst and the plasticizer at the third temperature to obtain the antibacterial silane-modified anti-sealant. The present application also relates to an antibacterial silane-modified sealant prepared by the method as described above. The present application also relates to a method for curing the antibacterial silane-modified sealant as described above. The antibacterial silane-modified sealant of the present application has excellent and long-lasting antibacterial properties. The antibacterial silane-modified sealant is cured and cured with moisture in the air for a week, and the anti-mildew grade of the gel is 0 or 1.
Description
technical field [0001] The present application relates to the technical field of sealants, in particular to an antibacterial silane-modified sealant and a preparation method thereof. Background technique [0002] Sealant products are widely used in various industries, including civil construction, home decoration and industrial assembly and other fields. In the process of use, the special performance requirements of the sealant itself are gradually increasing. The household market of sealant is very large, and it is used in all aspects of life, such as glue for door and window frames, glue for table basins, glue for kitchen sinks, glue for sealing around toilets, and glue for wet and dry separation of bathrooms. As mentioned above, the sealants used in these household areas are mostly used in humid environments, and the biggest problem is mildew of the strips. Mildew of the adhesive strips makes the overall appearance very ugly and deteriorates the user experience. Theref...
Claims
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Application Information
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