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Building sealant for house industrialization and preparation method thereof

A sealant and housing technology, applied in the direction of adhesives, adhesive types, polyether adhesives, etc., can solve the problems of poor aging resistance, interface cracking, surface unpaintable, etc., and achieve good displacement resistance and good adhesion Strong, good weather resistance

Active Publication Date: 2017-08-18
广东长鹿新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silicone sealants use polysiloxane as the main raw material. During the curing process, they react with cross-linking agents to form a network Si—O—Si skeleton structure. Engineering aesthetics, at the same time, the silicone sealant is not good for the bonding of precast concrete, and the interface will crack for a long time, resulting in water leakage
Polyurethane sealant is mainly composed of polyurethane prepolymer, and its main chain is mainly composed of C—O and N—C. Poor, curing is easy to foam, the monomer is highly toxic, contains solvents, and is harmful to the environment and human body

Method used

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  • Building sealant for house industrialization and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0025] The building sealant used for the industrialization of this house includes 100 parts of silane-modified polyether resin, 30 parts of plasticizer, 100 parts of nano-calcium carbonate, 1 part of ultraviolet absorber, 3 parts of silane coupling agent, silane 4 parts of crosslinking agent and 1.5 parts of catalyst.

[0026] Furthermore, the silane-modified polyether resin is terminated by siloxane, the main chain is the molecular structure of polyether, the molecular weight is 6000-12000, and the structural formula is: R 1 (R 2 O) 2 SiO((CH2) 3 O) n Si(R 2 O) 2 R 1 , where R 1 and R 2 It is an alkyl group of C1-C2, and n is the number of repeating units in the main chain.

[0027] Furthermore, nano-calcium carbonate is one or more mixtures of nano-scale calcium carbonate, silicon micropowder, and talcum powder kaolin whose surface has been treated with fatty acid or stearic acid.

[0028] Further, the plasticizer is polyethylene glycol with a molecular weight of 2...

Embodiment 2

[0035] The building sealant for residential industrialization includes 100 parts of silane-modified polyether resin, 50 parts of plasticizer, 150 parts of nano calcium carbonate, 1.5 parts of ultraviolet absorber, 4 parts of silane coupling agent, silane 4.5 parts of crosslinking agent and 2 parts of catalyst.

[0036] Further, the plasticizer is polyglycerol with a molecular weight of 5000; the ultraviolet absorber is UV-329; the silane coupling agent is methyltriethoxysilane; the silane crosslinking agent is chloropropyltrimethoxysilane; For stannous octoate.

[0037] The preparation method of the building sealant for housing industrialization of the present embodiment comprises the following steps:

[0038] (1) Take by weighing silane-modified polyether resin, polyglycerol, ultraviolet absorber UV-329 and nano-calcium carbonate respectively by above-mentioned quality component, and add in batches the double planetary power mixer mixing barrel and stir evenly, then Heating...

Embodiment 3

[0043] The building sealant for the industrialization of this house includes 100 parts of silane-modified polyether resin, 60 parts of plasticizer, 200 parts of nano-calcium carbonate, 1.5 parts of ultraviolet absorber, 4.5 parts of silane coupling agent, silane 4 parts of crosslinking agent and 3 parts of catalyst.

[0044] Further, the plasticizer is diisodecyl phthalate; the nano-calcium carbonate is silicon micropowder; the ultraviolet absorber is UV-327; the silane coupling agent is methyltrimethoxysilane; the silane crosslinking agent is N- (β-Aminoethyl)-γ-aminopropyltriethoxysilane; catalyst is dibutyltin dilaurate.

[0045] The preparation method of the building sealant for housing industrialization of the present embodiment comprises the following steps:

[0046] (1) Weigh silane-modified polyether resin, diisodecyl phthalate, ultraviolet absorber UV-327 and silicon micropowder according to the above mass components, and add them to the mixing tank of the double pla...

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Abstract

A building sealant for house industrialization comprises the following components in parts by weight: 100 parts of silane-modified polyether resin, 30-100 parts of a plasticizer, 80-400 parts of nano calcium carbonate, 0-2 parts of an ultraviolet absorbent, 2-7 parts of a silane coupling agent, 3-8 parts of a silane cross-linking agent, and 1-7 parts of a catalyst. The building sealant of the invention has the following advantages that (1) the building sealant is environment-friendly, has no toxicity, low VOC, good constructability and no bubbling, and has no harm to environment and human body; (2) after curing, the building sealant has good weather resistance, surface paintability, and no pollution; and (3) the building sealant can bear a certain range of deformation, has good displacement resistance, has good bonding property to concrete, and can achieve the effects of no cracking and debonding.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a building sealant and a preparation method thereof. The building sealant is mainly used for caulking, sealing and waterproofing between concrete prefabricated panels in large-scale civil engineering. Background technique [0002] Housing industrialization refers to the use of science and technology to transform the traditional housing industry, based on the industrialized construction system, featuring energy saving, environmental protection and resource recycling, and advocating the environmental protection concepts of "low-carbon economy" and "green building". It can also improve the construction efficiency, save the construction cost, and finally realize the sustainable development of the house. Housing industrialization was first proposed by Japan in the late 1960s. Japan is also the first country in the world to produce housing in factories. After vigorous popularization an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J171/00C09J11/04C09J11/06C09J11/08
CPCC08K3/26C08K3/34C08K3/346C08K3/36C08K9/04C08K13/06C08K2003/265C08K2201/011C08L2205/02C09J11/04C09J11/06C09J11/08C09J171/00C08L71/00C08L71/02
Inventor 何晓军陈家荣马营张剑叶永称罗文军梁真福张柳君陈晓航
Owner 广东长鹿新材料科技有限公司
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