Hydraulic structure disjoint filling silicone adhesive and preparation method thereof

A technology of hydraulic structure and silicone glue, applied in chemical instruments and methods, adhesives, other chemical processes, etc., can solve the problems of unable to form gel, unable to meet the requirements of elastic cushion, low sampling success rate, etc.

Inactive Publication Date: 2009-12-16
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cement grouting cannot meet the requirements of elastic cushion
Epoxy grouting cannot be carried out with water. When there is water, even gel cannot be formed, and the success rate of sampling is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The hollow filling silicone glue for the hydraulic structure of the present invention is made of the following two-components A and B) at a weight ratio of 7.9:1: wherein component A is prepared from the following raw materials in the weight ratio:

[0018] α,ω-Dihydroxypolydimethylsiloxane 100

[0019] Calcium carbonate filler 37

[0020] Component B is prepared from the following raw materials in weight ratio:

[0021] Calcium Carbonate Filler 4

[0022] Methylvinyldisilane 10

[0023] Linear aminooxy-containing polysiloxane crosslinkers 3.3.

[0024] Preparation method: α, ω-dihydroxy polydimethylsiloxane and calcium carbonate filler in component A are mixed in a three-arm planetary mixer at a weight ratio of 100:37, and then sealed for later use; calcium carbonate in component B Filler, methyl vinyl disilane and linear aminooxy-containing polysiloxane crosslinking agent are mixed in a three-arm planetary mixer in a weight ratio of 4:10:3.3, and then sealed for u...

Embodiment 2

[0026] The hydraulic structure of the present invention is void-filled silicone glue, which is made of the following two components of A and B in a weight ratio of 8:1:

[0027] Among them, component A is prepared from the following raw materials in weight ratio:

[0028] α,ω-Dihydroxypolydimethylsiloxane 100

[0029] Calcium carbonate filler 30

[0030] Component B is prepared from the following raw materials in weight ratio:

[0031] Calcium Carbonate Filler 3

[0032] Methylvinyldisilane 10

[0033] Linear aminooxy-containing polysiloxane crosslinkers 3.3.

[0034] Preparation method: α, ω-dihydroxy polydimethylsiloxane and calcium carbonate filler in component A are mixed in a three-arm planetary mixer at a weight ratio of 100:30, and then sealed for later use; calcium carbonate in component B Filler, methyl vinyl disilane and linear aminooxy-containing polysiloxane crosslinking agent are mixed in a three-arm planetary mixer in a weight ratio of 3:10:3.3, and then sea...

Embodiment 3

[0036] The hydraulic structure of the present invention is void-filled silicone glue, which is made of the following two components of A and B in a weight ratio of 6.6:1:

[0037] Among them, component A is prepared from the following raw materials in weight ratio:

[0038] α,ω-Dihydroxypolydimethylsiloxane 100

[0039] Calcium carbonate filler 30

[0040] Component B is prepared from the following raw materials in weight ratio:

[0041] Calcium Carbonate Filler 3

[0042] Methylvinyldisilane 10

[0043] Linear aminooxy-containing polysiloxane crosslinkers 6.7.

[0044] Preparation method: α, ω-dihydroxy polydimethylsiloxane and calcium carbonate filler in component A are mixed in a three-arm planetary mixer at a weight ratio of 100:30, and then sealed for later use; calcium carbonate in component B Filler, methyl vinyl disilane and linear aminooxy-containing polysiloxane crosslinking agent are mixed in a three-arm planetary mixer in a weight ratio of 3:10:6.7, and then s...

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PUM

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Abstract

The invention discloses hydraulic structure disjoint filling silicone adhesive, which is prepared from a component A and a component B according to a weight proportion, wherein the component A comprises 100 portions of alpha, omega-dihydroxydimethylpolysiloxane and 15 to 45 portions of calcium carbonate filler; and the component B comprises 3 to 10 portions of calcium carbonate filler, 6 to 15 portions of methyl vinyl disilane, and 3 to 10 portions of linear amino polysiloxane cross linker. After stirring and mixing according to the weight proportion, the components are separately sealed and stored; and during use, the component A and the component B are mixed according to the weight proportion and vulcanized at room temperature to form the hydraulic structure disjoint filling silicone adhesive. The hydraulic structure disjoint filling silicone adhesive has the characteristics of room temperature vulcanization, double components, self leveling, adjustable curing speed, low modulus, high elasticity, high durability, free from pollution, free from erosion and the like, belongs to an environment-friendly material, and is mainly used for pouring, filling, sealing and repairing hydraulic structure disjoints of water turbine volutes, water delivery steel pipes and the like.

Description

technical field [0001] The invention relates to the field of water conservancy engineering materials, in particular to a two-component room-temperature vulcanized sealing silicone glue for void filling, repairing and perfusion of hydraulic structures and a preparation method thereof. Background technique [0002] Hydraulic structures (such as turbine volutes, water delivery steel pipes, etc.) appear hollow between the steel plate and the concrete after a period of operation. For example, the structural form of the turbine volute of the Xin'anjiang Hydropower Station is an isolated cushion volute, and an asphalt elastic cushion is set between the volute and the surrounding concrete. After more than 40 years of operation, the asphalt cushion has seriously aged, and it has been found that there is serious voiding and water accumulation in the asphalt cushion. This phenomenon has many hidden dangers: (1) The surface of the volute loses its asphalt cover, and it is easy to corro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/06C09J11/04C09J11/08C09K3/10
Inventor 周继凯李建华张运雄赵新华马晓辉陈连芳
Owner HOHAI UNIV
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