High-strength self-leveling silane modified waterproof coating and preparation method thereof

A waterproof coating and silane modification technology, applied in polyether coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as unfavorable construction operations and high viscosity of coatings, and achieve improved network structure density and good compatibility , Improve the effect of construction convenience and storage stability

Active Publication Date: 2020-10-13
上海三棵树防水技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, affected by the high-strength and high-thixotropic technology of silane-modified sealants, in order to obtain better strength of silane-modified coatings, people usually increase the amount of filler added and make full use of the reinforcing effect of fillers. Therefore, the prepared coating has a high viscosity, which is not conducive to construction operations.

Method used

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  • High-strength self-leveling silane modified waterproof coating and preparation method thereof
  • High-strength self-leveling silane modified waterproof coating and preparation method thereof
  • High-strength self-leveling silane modified waterproof coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]

[0033] (1) Add plasticizer and solid filler into the container, then stir for 3 hours at a temperature of 110°C, a vacuum of -0.08MPa, and 1200rpm, then cool down to 50°C and release the vacuum;

[0034] (2) Then add silane-modified polymer resin, hyperbranched polysiloxane resin and water-removing agent, and continue stirring and mixing for 20 minutes at normal temperature and pressure;

[0035] (3) Then add coupling agent, light stabilizer, ultraviolet absorber and catalyst in turn, after dispersing and mixing for 10 minutes, then stir for 5 minutes under vacuum degree of -0.08MPa, and finally remove the vacuum to obtain the high-strength self-flowing Flat silane coating.

[0036] The powder filler is mainly composed of heavy calcium and barium sulfate with a mass ratio of 3:1.

[0037] The silane-modified polymer resins are S203 and S303 from Zhonghua Trading (Shanghai) Co., Ltd., and the plasticizer is DINP from ExxonMobil.

Embodiment 2

[0039]

[0040] (1) Add plasticizer and solid filler into the container, then stir at 115°C, vacuum degree of -0.09MPa, 1500rpm for 2.5h, then cool down to 50°C and release the vacuum;

[0041] (2) Then add silane-modified polymer resin, hyperbranched polysiloxane resin and water-removing agent, and continue stirring and mixing at normal temperature and pressure for 25 minutes;

[0042] (3) Then add coupling agent, light stabilizer, ultraviolet absorber and catalyst in sequence, disperse and mix for 15 minutes, then stir for 10 minutes at a vacuum degree of -0.09MPa ~, and finally release the vacuum to obtain the high-strength Self-leveling silane coating.

[0043] The powder filler includes heavy calcium, light calcium and titanium dioxide in a mass ratio of 2:1:5.

[0044] The silane-modified polymer resin is SPUR 1015LM from Momentive High-tech Materials Group;

[0045] The preferred plasticizer is polyether PPG2000 from Wanhua Chemical Group.

Embodiment 3

[0047]

[0048] (1) Add plasticizer and solid filler into the container, then stir at 115°C, vacuum degree of -0.1MPa, 2000rpm for 2h, then cool down to 50°C and release the vacuum;

[0049] (2) Then add silane-modified polymer resin, hyperbranched polysiloxane resin and water-removing agent, and continue stirring and mixing for 30 minutes at normal temperature and pressure;

[0050] (3) Then add coupling agent, light stabilizer, ultraviolet absorber and catalyst in turn, after dispersing and mixing for 15 minutes, then stir for 5 minutes at a vacuum degree of -0.1MPa, and finally remove the vacuum to obtain the high-strength self-flowing Flat silane coating.

[0051] The powder filler includes heavy calcium, carbon black and barium sulfate at a mass ratio of 5:1:5.

[0052] The silane-modified polymer resin is Desmoseal SXP2636 from Covestro Polymers (China) Co., Ltd.; the plasticizer is polyether PPG3000 from Tianjin Petrochemical No. 3 Plant.

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Abstract

The invention relates to a high-strength self-leveling silane modified waterproof coating. The coating is prepared from the following components in parts by mass: silane modified polymer resin, hyperbranched polysiloxane, a plasticizer, a powder filler, a water removal agent, a coupling agent, a light stabilizer, an ultraviolet light absorber and a catalyst. The hyperbranched polysiloxane is addedinto a system, so the viscosity and the mechanical property of the silane modified coating are greatly improved, and thus, the construction convenience and the storage stability of the coating are improved. Due to the introduction of the hyperbranched polysiloxane, Si-O-Si bonds in the system are greatly increased, and the heat resistance and weather resistance of the silane modified coating areobviously improved. The hyperbranched polysiloxane and the end groups of common silane modified resin react and are cross-linked, so the mechanical properties of the silane modified coating can be further improved, and the stability of the system is better.

Description

technical field [0001] The invention relates to the technical field of functional environment-friendly latex paint, in particular to a high-strength self-leveling silane-modified waterproof paint and a preparation method thereof. Background technique [0002] Common types of waterproof coatings on the market include polyurethane waterproof coatings, polymer cement waterproof coatings, acrylic waterproof coatings, asphalt and modified bitumen waterproof coatings. Most of the waterproof coatings, especially polyurethane and asphalt waterproof coatings, contain more harmful components, which do not conform to the development trend of environmental protection of building materials. Therefore, a new type of silane modified waterproof coating has been developed in this field. The coating has high environmental protection and performance. excellent. [0003] Silane-modified waterproof coatings are made of silane-modified polymer resin as the main film-forming substance, and powder...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D171/02C09D175/04C09D183/04C09D5/02
CPCC09D171/02C09D175/04C09D5/024C08L2201/08C08L2312/00C08L2205/025C08K2003/265C08K2003/3045C08K2201/014C08K2003/2241C08L83/04C08L71/02C08K13/02C08K3/26C08K3/30C08K5/3435C08K3/22C08K3/04
Inventor 廖丽郭嘉周章华
Owner 上海三棵树防水技术有限公司
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