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Silane modified polyether sealant as well as preparation method and application thereof in prefabricated building

A silane-modified polyether and sealant technology, which is applied in the direction of polyether adhesives, adhesives, adhesive types, etc., can solve the specific requirements for thermal conductivity, fire and flame retardant performance, environmental protection, and sealants are easy to harden , unfavorable application and other problems, to achieve excellent physical properties and adhesion, low thermal conductivity, low density effect

Pending Publication Date: 2022-04-05
ZHENGZHOU HOLLOWLITE MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing national standards and industry standards have not put forward clear requirements on the density, thermal conductivity, fire and flame retardancy, and environmental protection of silane-modified polyether sealants for prefabricated buildings.
The silane-modified polyether on the market contains a large amount of inorganic fillers such as calcium carbonate, and the density is generally above 1.5g / ml, which is relatively high. Moreover, after a period of use, the sealant tends to harden and crack, which is not conducive to application

Method used

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  • Silane modified polyether sealant as well as preparation method and application thereof in prefabricated building
  • Silane modified polyether sealant as well as preparation method and application thereof in prefabricated building
  • Silane modified polyether sealant as well as preparation method and application thereof in prefabricated building

Examples

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preparation example Construction

[0034] In the preparation raw material of the present invention, 0.1-50 parts by weight of hollow glass microspheres are introduced, preferably 10-48 parts by weight. Hollow glass microspheres are spherical powder materials with a hollow structure; preferably, the hollow glass microspheres of the present invention have a true density of 0.12 to 0.70 g / cm 3 , preferably 0.12~0.62g / cm 3 ; The particle size is in the range of 5-100 μm, preferably at least one of the average particle size in the range of 8-90 μm. Hollow glass microspheres in preferred embodiments of the present invention have a true density of 0.37 to 0.39 g / cm 3 , particle size D90: 65μm, and / or, true density 0.21~0.24g / cm 3 , particle size D90: 70 μm.

[0035] Moreover, the raw material of the silane-modified polyether sealant includes 0.1-50 parts by weight of silica airgel, preferably 1-40 parts by weight, and the added amount does not exceed 20% by weight of the matrix resin. Silica airgel is usually a li...

Embodiment 1

[0066] This embodiment is a novel silane-modified polyether sealant for prefabricated buildings, which comprises the following raw materials mixed in parts by weight, see Table 1:

[0067] The preparation raw material of table 1 embodiment 1

[0068]

[0069] The preparation method is as follows:

[0070] 1) Dry hollow glass microspheres, flame retardant fillers, reinforcing fillers, titanium dioxide, and silica airgel in a drying oven at 100-110°C for 4 hours.

[0071] 2) Weigh each raw material according to the above ratio, add silane-modified polyether resin, liquid flame retardant, plasticizer, anti-fungal agent and water remover to the double planetary mixer at room temperature, stir and mix at a speed of 20-40HZ 5-10min;

[0072] 3) Then add the dried flame-retardant filler, reinforcing filler, titanium dioxide, and silica airgel, stir at 20-40HZ for 3-10min, switch to high-speed stirring at 30-50HZ, turn on the vacuum, and the vacuum degree is 0.09± Continue to st...

Embodiment 2

[0077] This example is a novel silane-modified polyether sealant for prefabricated buildings, which is prepared by mixing the following raw materials in parts by weight, see Table 2; the preparation method is the same as that of Example 1.

[0078] The preparation raw material of table 2 embodiment 2

[0079]

[0080]

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Abstract

The invention relates to the technical field of sealants for prefabricated buildings, and provides a silane modified polyether sealant as well as a preparation method and application thereof. The silane modified polyether sealant comprises the following raw materials: 25-100 parts of matrix resin; 5-80 parts of a plasticizer; 0.1 to 50 parts of hollow glass beads; 0.1-50 parts of silicon dioxide aerogel, wherein the addition amount of the silicon dioxide aerogel does not exceed 20% of the weight of the matrix resin; 10 to 150 parts of a flame retardant component; 10 to 100 parts of reinforcing filler; 0.5-5 parts of a light stabilizer; 0.5 to 10 parts of a water removal agent; 1-10 parts of a coupling agent; and 0.1-3 parts of a catalyst. The novel silane modified polyether sealant disclosed by the invention has relatively low density, good adhesion and certain fireproof and flame-retardant properties, and is more suitable for sealing in prefabricated buildings.

Description

technical field [0001] The application relates to the technical field of sealants for prefabricated buildings, in particular to a silane-modified polyether sealant, its preparation method and its application in prefabricated buildings. Background technique [0002] With the development of prefabricated buildings, the control of indoor and outdoor water vapor environment has become an inevitable demand. The combination of advanced sealing materials can realize the intelligent control of water vapor inside and outside the building maintenance structure, avoiding the corrosion of components caused by the condensation of water vapor on the wall, the failure of the insulation layer and the growth of mold. The sealant used for prefabricated buildings is usually embedded in the joints between prefabricated building components in a non-formed state, and is sealed by bonding with the joint surface and able to withstand joint displacement to achieve airtight and watertight synthesis...

Claims

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Application Information

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IPC IPC(8): C09J171/00C09J11/06C09J11/04
Inventor 蔡耀武陆瑜翀李瑶陶新良曾荣平孙小康史乾坤王亚豪赵永振徐坤
Owner ZHENGZHOU HOLLOWLITE MATERIALS CO LTD
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