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Silane-modified polyether adhesive for low-modulus and high-adhesion assembly building and preparation method thereof

A silane-modified polyether, high-adhesion technology, applied in polyether adhesives, polymer adhesive additives, non-polymer adhesive additives, etc. problems such as adhesion and complicated operation, and achieve the effects of low production cost, improved adhesion, and easy-to-operate steps

Active Publication Date: 2019-10-29
GUANGZHOU BAIYUN CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing two-component low-modulus silane-modified polyether adhesive has basically no adhesion to the substrate, and its adhesion to the substrate depends on the primer
If the operation is not done properly during the construction process, and the primer is not properly painted on a certain part, it will bring serious risks of water leakage
In addition, the use of primer adds a process, the operation is more complicated, and the solvent contained in the primer is harmful to the human body and the environment.

Method used

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  • Silane-modified polyether adhesive for low-modulus and high-adhesion assembly building and preparation method thereof
  • Silane-modified polyether adhesive for low-modulus and high-adhesion assembly building and preparation method thereof
  • Silane-modified polyether adhesive for low-modulus and high-adhesion assembly building and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The present embodiment provides a branched polyether epoxy resin and a preparation method thereof, comprising the following steps:

[0058] (1) Weigh 768g of pentapentyl polyether tetraol PP150, heat to 120°C for vacuum dehydration for 20min, then cool to room temperature through dry nitrogen, add 5.62g of boron trifluoride-diethyl ether complex as catalyst, use Stir evenly with a magnetic stirrer;

[0059] (2) Heat up to 60±2°C, stir evenly, slowly add 356g of epichlorohydrin dropwise within 2h with a constant pressure funnel, then keep warm for 6h, and then vacuum remove unreacted epichlorohydrin;

[0060] (3) After cooling down to 45±2°C and adding an appropriate amount of toluene for dilution, add an excess of 112.4g of solid sodium hydroxide several times within 2 hours, and keep warm for 6 hours;

[0061] (4) The product is suction filtered, and the filtrate is collected with a separatory funnel to extract the organic phase with toluene, washed with distilled wat...

Embodiment 2

[0067] The present embodiment provides a branched polyether epoxy resin and a preparation method thereof, comprising the following steps:

[0068] (1) Weigh 1450g of polyether trihydric alcohol N330, heat to 120°C for 30 minutes in vacuum dehydration, then cool to room temperature with dry nitrogen, add 7.96g of boron trifluoride-diethyl ether complex as catalyst, and stir with magnetic force stir evenly;

[0069] (2) Warm up to 60±0.5°C, stir evenly, slowly add 142g of epichlorohydrin dropwise within 2 hours with a constant pressure funnel, then keep warm for 8 hours, and then remove unreacted epichlorohydrin in vacuum;

[0070] (3) After cooling down to 45±0.5°C and adding an appropriate amount of toluene for dilution, add 159.2g of solid sodium hydroxide several times within 2 hours, and keep warm for 4 hours;

[0071] (4) The product is suction filtered, and the filtrate is collected with a separatory funnel to extract the organic phase with toluene, washed with distilled...

Embodiment 3

[0077] Silane-modified polyether glue for low-modulus high-adhesion prefabricated buildings described in this embodiment, in parts by weight, includes:

[0078] A component:

[0079]

[0080]

[0081] B component:

[0082]

[0083] Wherein, the viscosity of the above-mentioned silane-modified polyether is 40Pa.s, and has the following structural characteristics:

[0084]

[0085] The preparation method of silane-modified polyether glue for low-modulus high-adhesion prefabricated buildings described in this embodiment comprises the following steps:

[0086] 1. Prepare component A:

[0087] (1) Add the above-mentioned silane-modified polyether, pentapentyl polyether tetraol PP150, the branched polyether epoxy resin FBEPO prepared in Example 1, polyamide wax, white carbon black, and titanium dioxide to the planetary machine material In the tank, stir for 8 minutes;

[0088] (2) Add nano-active calcium carbonate therein, disperse and stir for 50min under the condit...

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Abstract

The invention provides a low-modulus high-adhesion assembling type silane modified polyether adhesive used for a building. The low-modulus high-adhesion assembling type silane modified polyether adhesive is divided into a component A and a component B, wherein the component A comprises silane modified polyether, a plasticizer, hydroxyl-terminated branched polyether, branched polyether epoxy resin,a coupling reagent, a thixotropic agent, white carbon black, enhanced filler A, hollow glass microsphere and toner; the component B comprises the plasticizer, the hydroxyl-terminated branched polyether, a light stabilizer, enhanced filler B, an organic tin catalyst and an amine curing agent. In addition, various ingredients in the silane modified polyether adhesive are optimized to obtain a sealant formula with an optimal binding effect. The double-component polyether adhesive system has good compatibility, in addition, the adhesion of the double-component polyether adhesive is greatly improved, the double-component polyether adhesive system is applied to the prefabricated construction member material abutted seam connection used by the assembling type building, a good binding and waterproof effect can also be achieved without being cooperated with a first coat, and meanwhile, a water leakage risk brought by an existing first coat construction misoperation can be avoided.

Description

technical field [0001] The invention belongs to the field of building materials and their manufacture, and in particular relates to a silane-modified polyether adhesive for low-modulus and high-adhesion assembled buildings and a preparation method thereof. Background technique [0002] The prefabricated building is like building a house with building blocks. The main components of the house, especially the prefabricated concrete PC components, are produced in the factory and assembled on site. This production method has high construction efficiency, low resource and energy consumption, and less environmental pollution. On-site There are many advantages such as fewer construction personnel and high turnover rate of capital and equipment. [0003] During the assembly process of prefabricated buildings, there are a large number of joints that need to be waterproofed and sealed, especially the joints of the exterior wall. The sealant is the first line of defense for waterproofin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J171/00C09J11/04C09J11/06C09J11/08C08G59/04
CPCC08G59/04C08K2201/011C08K2201/014C08L2205/025C08L2205/035C09J11/04C09J11/06C09J11/08C09J171/00C08L71/00C08L63/00C08K13/06C08K7/28C08K3/36
Inventor 陈建军付子恩黄恒超陈洋庆龙飞杨苏邯刘光华
Owner GUANGZHOU BAIYUN CHEM IND
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