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Transparent and mildew-proof silane-modified polyether sealant and preparation method thereof

A mildew-resistant silane and sealant technology, which is applied in the field of transparent mildew-resistant silane-modified polyether sealant and its preparation, can solve the problems of poor environmental protection and poor durability of mildew resistance, and achieve improved mildew resistance and good weather resistance , the effect of not easy to organic volatiles

Active Publication Date: 2017-06-13
浙江中天东方氟硅材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the sealant has obtained a certain anti-mildew effect, the anti-mildew durability is poor and the environmental protection is not good

Method used

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  • Transparent and mildew-proof silane-modified polyether sealant and preparation method thereof
  • Transparent and mildew-proof silane-modified polyether sealant and preparation method thereof
  • Transparent and mildew-proof silane-modified polyether sealant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A transparent mildew-proof silane-modified polyether sealant, which consists of the following components in parts by weight:

[0033]

[0034]

[0035] The preparation of described transparent mildew-proof silane modified polyether sealant comprises the following steps:

[0036] A. Add the modified polyether of basic polymer terminal trimethoxysiloxane, plasticizer diisodecyl phthalate, ultraviolet absorber, and antioxidant into the high-speed disperser, mix at room temperature for 1 hour, and mix well;

[0037] B. Add filler R972 hydrophobic silica into the high-speed disperser, heat up to 110°C, stir and vacuum dehydrate at high speed for 3 hours under the vacuum degree of -0.0095MPa, until the moisture content is below 5 / 10,000;

[0038] C. Cool the reaction solution below 50°C, then add the catalyst dibutyltin dilaurate, water remover vinyltrimethoxysilane, coupling agent γ-aminopropyltriethoxysilane, control the stirring speed and pass the cooling Water, to ...

Embodiment 2

[0040] A transparent mildew-proof silane-modified polyether sealant, which consists of the following components in parts by weight:

[0041]

[0042]

[0043] The preparation of described transparent mildew-proof silane modified polyether sealant comprises the following steps:

[0044] A: Add the base polymer, plasticizer, UV absorber, and antioxidant into the high-speed disperser, mix at room temperature for 2 hours, and mix well;

[0045] B: Add fillers to the high-speed disperser, raise the temperature to 10°C, stir and vacuum dehydrate at high speed for 3 hours under the condition of vacuum degree -0.0095MPa, until the moisture content is below 5 / 10,000;

[0046] C: Cool the reaction solution below 50°C, then add catalyst, water remover, coupling agent, control the stirring speed and pass cooling water to ensure that the temperature of the rubber material is below 50°C; stir for 1 hour, vacuum degassing and filling, A transparent anti-mildew silane-modified polyethe...

Embodiment 3

[0048] A transparent mildew-proof silane-modified polyether sealant, which consists of the following components in parts by weight:

[0049]

[0050] The preparation of described transparent mildew-proof silane modified polyether sealant comprises the following steps:

[0051] A: Add the base polymer, plasticizer, UV absorber, and antioxidant into the high-speed disperser, mix at room temperature for 1.5 hours, and mix well;

[0052] B: Add fillers to the high-speed disperser, raise the temperature to 105°C, stir and vacuum dehydrate at a high speed for 3 hours at a vacuum degree of -0.0095MPa, until the moisture content is below 5 / 10,000;

[0053] C: Cool the reaction solution below 50°C, then add catalyst, water remover, coupling agent, control the stirring speed and pass cooling water to ensure that the temperature of the rubber material is below 50°C; stir for 1 hour, vacuum degassing and filling, A transparent anti-mildew silane-modified polyether sealant was prepared...

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Abstract

The invention discloses a transparent and mildew-proof silane-modified polyether sealant. The transparent and mildew-proof silicone-modified polyether sealant is prepared from the following components in parts by weight: 55 to 80 parts of a basic polymer, 0 to 12 parts of a plasticizer, 8 to 20 parts of filler, 0.3 to 2 parts of a water removing agent, 0 to 1 part of an ultraviolet absorbent, 0 to 1 part of an antioxidant, 0.2 to 2 parts of a catalyst and 0.2 to 5 parts of a coupling agent. The product disclosed by the invention has a transparent appearance, is green and environment-friendly, has good weather resistance, high caking property, no corrosion, good mildew-proof effect and no toxin and harms, and is very applicable to occasions with relatively high mildew-proof environment-friendly requirements, including kitchens, bathrooms and the like.

Description

technical field [0001] The invention relates to a transparent mildew-proof silane-modified polyether sealant and a preparation method thereof, belonging to the field of synthesis of organic silicon downstream products. Background technique [0002] Silane-modified polyether sealant is a viscous paste obtained by mixing fillers, plasticizers, additives, etc. with alkoxysilane-terminated polyether polymers as the base material. When it is applied to the gap between joint surfaces, it will start to polymerize and solidify due to contact with air or moisture on the substrate, and finally form a cohesive elastomer to fill the interface to achieve the purpose of bonding and sealing. Silane-modified polyether sealants have the advantages of good elasticity, good weather resistance and durability, high resistance to deformation and displacement, low VOC content, no pollution, and environmental protection. They are widely used in rail transit, automobile manufacturing, containers, el...

Claims

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Application Information

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IPC IPC(8): C09D171/00C09D183/12C09D11/06C09D11/04C09K3/10
CPCC08K3/36C08K5/12C08K5/1345C08K5/5425C08K13/02C08L2201/08C08L2201/10C08L2205/02C09D11/04C09D11/06C09D171/00C09D183/12C09K3/10C08L71/02
Inventor 邵向东杨庆红朱雪锋席先锋徐乔峰吉兰平
Owner 浙江中天东方氟硅材料股份有限公司
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