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A high water -resistant, low -mode volume single -component MS sealing, preparation method and application

A technology of MS sealant and low modulus, applied in the field of sealant, can solve the problems of incomplete degassing, uneven mixing, insufficient waterproof performance of seam sealing, etc., and avoid the complexity of on-site construction management and supporting mechanical equipment , Excellent adhesion and sealing and waterproof performance, excellent adhesion and displacement resistance

Active Publication Date: 2022-01-14
SICHUAN WEIDUN JIANGXIN CONSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sealant application experience of on-site prefabricated buildings is based on Japan. Most of them use two-component MS sealant, which requires on-site mixing, vacuuming and degassing. However, due to the uneven quality of on-site construction personnel, the grass-roots treatment is often not thorough. , uneven mixing, incomplete defoaming and other problems, while the quality of one-component MS sealant is not good enough, high modulus, poor water resistance, poor displacement resistance, silicone rubber and polyurethane sealant counterfeiting and other problems, which eventually lead to splicing The sealing and waterproof performance of the seam is not enough, water leakage will even shorten the service life of the prefabricated building

Method used

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  • A high water -resistant, low -mode volume single -component MS sealing, preparation method and application
  • A high water -resistant, low -mode volume single -component MS sealing, preparation method and application
  • A high water -resistant, low -mode volume single -component MS sealing, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A high water resistance, low modulus one-component MS sealant, comprising the following components by weight:

[0047] Basic MS Resins: Molecular Structure

[0048]

[0049] The number average molecular weight is 10000, 50 parts;

[0050] Plasticizer, isononyl cyclohexane-1,2-dicarboxylate (DINCH), 50 parts;

[0051] Inorganic filler, ground calcium carbonate and talcum powder, 150 parts;

[0052] Thixotropic agent, hydrogenated castor oil, 10 parts;

[0053] Weather resistance agent, salicylate UV absorber, benzophenone UV absorber, 8 parts;

[0054] Catalyst, stannous octoate, two (dodecyl sulfide) dibutyl tin, 1 part;

[0055] MS sealant color masterbatch, composed of titanium dioxide, carbon black and diisodecyl phthalate (DIDP) in a mass ratio of 2:1:7, 3 parts;

[0056] Water-resistant adhesive, 5 parts, wherein, described water-resistant adhesive comprises following component, by molar mass part:

[0057] Trifunctional aminosilane coupling agent, γ-amino...

Embodiment 2

[0061] A high water resistance, low modulus one-component MS sealant, comprising the following components by weight:

[0062] Basic MS resin: the molecular structure is:

[0063]

[0064] The number average molecular weight is 10000-28000, 20 parts;

[0065] Plasticizer, diisodecyl phthalate (DIDP), 20 parts;

[0066] Inorganic filler, light calcium carbonate, silicon micropowder, 50 parts;

[0067] Thixotropic agent, fumed silica, organic bentonite, 3 parts;

[0068] Weather resistance agent, hindered amine light stabilizer, 2 parts;

[0069] Catalyst, dibutyltin diacetate, 0.05 part;

[0070] Color masterbatch for MS sealant, composed of titanium dioxide, carbon black and diisodecyl phthalate (DIDP) at a mass ratio of 2:1:7, 0.5 parts;

[0071] Water-resistant adhesive, 1 part, wherein, the water-resistant adhesive includes the following components, in parts by molar mass:

[0072] Trifunctional aminosilane coupling agent, γ-aminopropyltriethoxysilane, N-β-(aminoeth...

Embodiment 3

[0075] Basic MS resin, 25 parts;

[0076] Plasticizer, diisononyl phthalate (DINP), 25 parts;

[0077] Inorganic filler, nano active calcium carbonate, 50 parts;

[0078] Thixotropic agent, polyamide wax, 5 parts; Weather resistance agent, 2 parts;

[0079] MS sealant color masterbatch, 2 parts;

[0080] Water-resistant adhesive, the water-resistant adhesive of embodiment 1, 2 parts;

[0081] Catalyst, dibutyltin dilaurate, 0.5 parts.

[0082] The preparation method of the high water resistance and low modulus one-component MS sealant described in this embodiment is the same as that in Embodiment 1.

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Abstract

The invention discloses a high water resistance, low modulus one-component MS sealant and a preparation method thereof. The high water resistance and low modulus one-component MS sealant consists of the following components in parts by weight: basic MS resin 20 ~50 parts; plasticizer 20~50 parts; inorganic filler 50~150 parts; thixotropic agent 3~10 parts; weather resistance agent 2~8 parts; water resistant adhesive 1~5 parts; catalyst 0.05~1.0 parts; MS 0.5-3 parts of special color masterbatch for sealant; adding silane low polymer water-resistant adhesive can not only improve the water resistance of MS sealant, but also reduce the modulus of MS sealant. The MS sealant of the present invention has excellent adhesion to assembled concrete components, low modulus, and high water resistance. After immersion in water for 10 days without primer, it will be broken and bonded to 100% cohesive failure of MS sealant. There is no damage to the stretch bonding, which can significantly improve the sealing and waterproof performance of prefabricated buildings, and can be widely used in the joints of prefabricated buildings.

Description

technical field [0001] The invention belongs to the technical field of sealants, and relates to a high water resistance and low modulus one-component MS sealant, in particular to a high water resistance and low modulus one-component MS sealant, a preparation method and an application thereof. Background technique [0002] Prefabricated buildings have the advantages of saving energy, saving materials, shortening the construction period and environmental protection. In the 1960s, prefabricated buildings became popular in the Japanese construction industry. So far, prefabricated buildings have also occupied half of the Japanese construction market. The prefabricated building adopts the method of factory prefabrication and on-site assembly. During the assembly process, there will be a seam with a width of 2 to 3 cm, and the seam needs to be filled with a sealant with excellent performance. Ketone sealant, polyurethane sealant and MS sealant, traditional silicone sealant has high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J171/00C09J11/04C09J11/06
CPCC09J171/00C09J11/04C09J11/06C08K2201/011C08K2003/265C08K13/02C08K5/12C08K3/26C08K3/34C08K3/22C08K3/04C08K5/544C08K5/5435C08K3/36
Inventor 唐先成刘勇丁海涛夏亮亮王用才郭伟戴鸿基袁志涛刘亚妮王建红唐瑞甫
Owner SICHUAN WEIDUN JIANGXIN CONSTR CO LTD
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