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Silane-modified polyether sealant with excellent water-immersion bonding performance and preparation method thereof

A technology of silane-modified polyether and adhesive properties, which is applied in the direction of polyether adhesives, adhesives, adhesive types, etc., can solve problems such as bonding failure and adverse effects of sealant bonding, and achieve good bonding , Improve the effect of water immersion bonding and protection activity

Active Publication Date: 2020-08-14
HUBEI HUITIAN NEW MATERIALS STOCK CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, under certain conditions of use, such as the joints of the exterior walls of prefabricated building panels, due to long-term rain or high humidity, it is not only a test for the weather resistance of the sealant itself, but more importantly, the bonding of the sealant The effect and durability test; on the other hand, the porous structure of the concrete prefabricated slab also brings many adverse effects to the bonding of the sealant, and it is easy to cause bonding failure under the washing of rainwater

Method used

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  • Silane-modified polyether sealant with excellent water-immersion bonding performance and preparation method thereof
  • Silane-modified polyether sealant with excellent water-immersion bonding performance and preparation method thereof
  • Silane-modified polyether sealant with excellent water-immersion bonding performance and preparation method thereof

Examples

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preparation example Construction

[0029] The embodiment of the present invention also provides a preparation method of the above-mentioned silane-modified polyether sealant with excellent water-immersion adhesive performance, comprising the following steps:

[0030] In terms of parts by mass, put 50-100 parts of plasticizer, 100-150 parts of nano-calcium carbonate, and 50-100 parts of silicon micropowder into the high-speed disperser. Dehydration blending is carried out under the condition of 0.09MPa, the stirring rate of the dehydration blending process is 800-900 rpm, and the stirring time is 60-200 minutes;

[0031] Cool to 80±5°C, under nitrogen protection, add 100 parts of silane-modified polyether, stir at 800-900 rpm for 30-60 minutes;

[0032] Add 2 to 10 parts of resin microspheres, 1 to 3 parts of vinyltrimethoxysilane, 0.5 to 3 parts of amino coupling agent, 0.1 to 1 part of organotin catalyst, and 0.3 to 3 parts of pigment in sequence. Stirring for 30-40 minutes under the condition that the degree...

Embodiment 1

[0035] The silane-modified polyether sealant with excellent water-immersion bonding performance provided in this example includes the following components in parts by mass:

[0036]

[0037]

[0038] This example provides a method for preparing the above-mentioned silane-modified polyether sealant with excellent water-immersion bonding performance, which includes the following steps:

[0039] In terms of parts by mass, put 100 parts of plasticizer DIDP, 100 parts of nano-calcium carbonate, and 50 parts of silicon micropowder into a high-speed disperser, and dehydrate and blend at a temperature of 90°C to 95°C and a vacuum degree greater than -0.09MPa , stirred at a rate of 800-900 rpm for 60 minutes; cooled to 80±5°C, under nitrogen protection, added 100 parts of polymer MS 203H, stirred at a rate of 850 rpm for 30 minutes; then added PVC resin in sequence 4 parts of microspheres, 1 part of vinyltrimethoxysilane, 0.5 parts of amino coupling agent, 0.1 part of organotin c...

Embodiment 2

[0041] The silane-modified polyether sealant with excellent water-immersion bonding performance provided in this example includes the following components in parts by mass:

[0042]

[0043]

[0044] This example provides a method for preparing the above-mentioned silane-modified polyether sealant with excellent water-immersion bonding performance, which includes the following steps:

[0045] In terms of parts by mass, put 100 parts of plasticizer DINP, 120 parts of nano-calcium carbonate, and 80 parts of silicon micropowder into a high-speed disperser, and dehydrate and blend at a temperature of 95°C to 100°C and a vacuum degree greater than -0.09MPa , stirred at a rate of 900 rpm for 60 minutes; cooled to 80±5°C, under nitrogen protection, added 100 parts of MS polymer 303H, stirred at a rate of 900 rpm for 60 minutes; then added PVC resin microspheres in sequence 6 parts, 3 parts of vinyltrimethoxysilane, 3 parts of aminopropyltriethoxysilane, 1 part of organotin cata...

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Abstract

The invention discloses a silane-modified polyether sealant with excellent water-immersion adhesive performance and a preparation method thereof, and relates to the field of silane-modified polyether sealants. In parts by mass, the silane-modified polyether sealant includes silane 100 parts of modified polyether, 50-100 parts of plasticizer, 100-150 parts of nano-calcium carbonate, 50-100 parts of silicon micropowder, 2-10 parts of resin microspheres, 1-3 parts of vinyltrimethoxysilane, amino 0.5-3 parts of coupling agent, 0.1-1 part of organotin catalyst, and 0.3-3 parts of pigment. The silane-modified polyether sealant prepared by the invention has excellent water-immersion adhesive performance, low modulus, tensile strength of 0.2 MPa, and elongation of 500%. The invention can improve the water-resistant bonding performance of the silane-modified polyether sealant. After soaking in water and aging, the tensile test result shows that the adhesive layer is cohesively damaged, and the bonding performance is not damaged at a constant elongation of 200%. It can be widely used in waterproof sealing in the construction industry .

Description

technical field [0001] The invention relates to the field of silane-modified polyether sealant, in particular to a silane-modified polyether sealant with excellent water-immersion adhesive performance and a preparation method thereof. Background technique [0002] Silane-modified polyether (MS polymer) was first invented and industrialized by Japanese KENAKE company in the 1970s. It was used as the main basic polymer raw material, supplemented with various additives, and thus produced for industrial and construction industries. MS adhesive sealant, which combines many advantages of the two existing sealant systems polyurethane and silicone, such as high elasticity, paintability, excellent weather resistance, extensive adhesion, and more importantly, the MS polymer itself It does not contain solvents, isocyanate NCO, and odorless. It is a natural green and environmentally friendly new material that can be used in automobile manufacturing, containers, elevators, and home decor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J171/00C09J11/04C09J11/06C09J11/08
CPCC08K2201/011C08L2205/025C08L2205/03C09J11/04C09J11/06C09J11/08C09J171/00C08L27/06C08K13/06C08K9/04C08K2003/265C08K3/36C08L83/04C08L71/00C08L63/00
Inventor 赵瑞王翠花韩胜利章锋吴正明
Owner HUBEI HUITIAN NEW MATERIALS STOCK CO LTD
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