Mixed crosslinking system two-component hollow sealant

A cross-linking system and two-component technology, applied in the field of sealant, can solve the problems of sealant bond strength decrease, performance weakening, and inability to cure, etc., to achieve enhanced bond strength, good bond strength, and short surface drying time Effect

Active Publication Date: 2021-07-30
GUANGZHOU GLORYSTAR CHEM +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the performance of the two-component hollow sealant weakens after being stored for 6 months. As time goes by, the pot life (more than 90min), the surface dry time becomes longer, the bond strength of the sealant decreases, and even cannot be cured after mixing. , prolonging the construction period and quality, thus limiting the application of two-component sealants, therefore, there is still room for improvement

Method used

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  • Mixed crosslinking system two-component hollow sealant
  • Mixed crosslinking system two-component hollow sealant
  • Mixed crosslinking system two-component hollow sealant

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0051] This preparation example discloses a preparation method of modified silicone oil.

[0052] Add 100mL of toluene and 50mL of 4-vinylepoxycyclohexane into a three-necked flask, add 1.5mL of chloroplatinic acid and heat to 50°C, drop 66mL of hydrogen-containing silicone oil into the dissolved 4-alkenylepoxycyclohexane, Protected under vacuum and heated to 90°C to react for 6 hours, distill off toluene under reduced pressure to obtain modified silicone oil.

preparation example 2

[0054] This preparation example discloses a preparation method of modified silicone oil.

[0055] Add 100mL of toluene and 50mL of 4-vinylepoxycyclohexane into a three-necked flask, add 1.7mL of chloroplatinic acid and heat to 53°C, drop 60mL of hydrogen-containing silicone oil into the dissolved 4-alkenylepoxycyclohexane, Protected under vacuum and heated to 95°C to react for 7 hours, distilled off toluene under reduced pressure to obtain modified silicone oil.

preparation example 3

[0057] This preparation example discloses a preparation method of modified silicone oil.

[0058] Add 100mL of toluene and 50mL of 4-vinylepoxycyclohexane into a three-necked flask, add 2mL of chloroplatinic acid and heat to 55°C, drop 56mL of hydrogen-containing silicone oil into the dissolved 4-vinylepoxycyclohexane, and pump Heating to 100° C. for 8 hours under vacuum protection, and distilling off toluene under reduced pressure to obtain modified silicone oil.

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Abstract

The invention relates to the field of sealants, and particularly discloses a mixed crosslinking body two-component hollow sealant. The hollow sealant comprises a main sealing component and a curing component, wherein the main sealing component comprises 50-60 parts of hydroxyl-terminated polydimethylsiloxane, 30-40 parts of inorganic filler, 5-10 parts of dimethyl silicone oil, 2-5 parts of modified silicone oil, 1-3 parts of tetraethoxysilane and 0.4-0.6 part of water; the curing component comprises 25-35 parts of a mixed cross-linking agent; 10 to 15 parts of a coupling agent; and 0.5 to 0.8 part of an organic tin catalyst; and the main sealing component and the curing component of the mixed cross-linking system two-component hollow sealant are independently packaged, and the main sealing component and the curing component are mixed according to the volume ratio of (8-10): 1 when the sealant is used. The mixed crosslinking system two-component hollow sealant can be used for sealing double-layer glass, and has the advantages of short surface drying time, high curing speed and high curing strength.

Description

technical field [0001] The application relates to the field of sealants, more specifically, it relates to a two-component hollow sealant with a hybrid crosslinking system. Background technique [0002] Hollow sealant is a new generation of green and environmentally friendly sealing material born under the national policy of high efficiency, energy saving, sealing and environmental protection in construction engineering. It will solidify into a tough rubber solid when exposed to moisture in the air, thus meeting the requirements of sealing and strength. Requirements, so that the material can be sealed and the sealing part is not easy to be damaged by external force. [0003] Usually the hollow sealant is two-component. The two-component hollow sealant packs the curing component and the main sealing component separately, and then mixes the two components in a specific ratio during use. In this way, the hollow The sealant can be mixed and used after a long period of time and m...

Claims

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Application Information

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IPC IPC(8): C09J183/04C09J11/04C09J11/08C09J11/06
CPCC09J183/04C09J11/04C09J11/08C09J11/06C08K2003/265C08L2205/025C08L2312/00C08L83/04C08L83/06C08K3/26C08K3/36C08K5/544C08K5/5435
Inventor 阮德高程小莲胡新嵩陈旭东余丁山郑治坤杨卓鸿鲁少林袁腾刘盈
Owner GUANGZHOU GLORYSTAR CHEM
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