Method for processing porous material by hydrogenated silicon oil

A technology of hydrogenated silicone oil and porous materials, which is applied in the treatment of dyed organic silicon compounds and fibrous fillers. It can solve the problems of porous material erosion, high porosity, high air permeability, and reduced material performance, and achieve excellent market prospects and maintain environmental protection. , better durability

Active Publication Date: 2014-07-16
JIANGSU RONGCHANG NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Their pores are connected to the outside world, and have high porosity and high air permeability. At the same time, they cannot prevent water vapor and corrosive media from penetrating into the material, such as the erosion of rainwater. Corrosion of materials, resulting in reduction of material properties and even affecting the service life of porous materials

Method used

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  • Method for processing porous material by hydrogenated silicon oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The formula and processing technology are as follows:

[0016] In terms of mass fraction, add 20 parts of hydrogenated silicone oil with a hydrogen content of 0.8%, 0-5 parts of siloxane coupling agent, 2 parts of methacryloxypropyl trimethoxysilane, and 30 parts of acetone into the stirred tank , 48 parts of butanol, stirred and dissolved to obtain hydrogenated silicone oil treatment agent.

[0017] Add water 10 times the amount of porous filler to be treated into the kettle with a stirring and heating device, start stirring, and at the same time slowly put in the porous silicate material to be treated (feeding process is about 15-25min), and drop evenly at 20°C Add the pretreatment agent, stir for 30 minutes after adding, then filter, dry, and crush to the required particle size to obtain a porous material treated with hydrogenated silicone oil. The pores of the porous silicate material are not closed after treatment, and the water contact angle is 158 °, with superh...

Embodiment 2

[0019] The formula and process are as follows:

[0020] In terms of mass fraction, add 30 parts of hydrogenated silicone oil with a hydrogen content of 0.5%, 1 part of methacryloxypropyltrimethoxysilane, 40 parts of methyl ethyl ketone, and 29 parts of ethanol into the stirred tank, stir and dissolve to obtain hydrogenated Silicone oil treatment agent.

[0021] Add water 15 times the amount of porous filler to be treated into the kettle with a stirring and heating device, start stirring, and slowly put in the porous silicate material to be treated (feeding process is about 15-25min), and drop evenly at 30°C Add the pretreatment agent, stir for 30 minutes after adding, then filter, dry, and crush to the required particle size to obtain a porous material treated with hydrogenated silicone oil. The pores of the porous material are not closed after treatment, and the water contact angle is 158°. Hydrophobic.

Embodiment 3

[0023] The formula and process are as follows:

[0024] In terms of mass fraction, add 10 parts of hydrogenated silicone oil with a hydrogen content of 0.1%, 3 parts of glycidyltrimethoxysilane, 60 parts of acetone, and 27 parts of ethanol into the stirred tank, and stir and dissolve to obtain a hydrogenated silicone oil treatment agent; Add water 5 times the amount of porous filler to be treated into the kettle with a stirring and heating device, start stirring, and slowly put in the porous silicate material to be treated at the same time (feeding process is about 15-25min), and drop evenly at 80°C After adding the pretreatment agent, stir for 60 minutes, suction filter the porous material dispersion, dry it, and crush it to the required particle size to obtain the porous silicate material treated with hydrogenated silicone oil. The pores of the porous material are not closed after treatment, and the water The contact angle is 150°, and it is superhydrophobic.

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Abstract

The invention relates to a method for processing a porous material by hydrogenated silicon oil, which comprises the following steps: taking 0.1-0.8% of hydrogen amount-containing hydrogenated silicon oil and cooperating with a silane coupling agent and an aqueous solvent to prepare a water-dilutable hydrogenated silicon oil processing agent, performing heat treatment, performing pumping filtration and drying on the surface of the porous material, and on internal porosity. The hole of the processed porous material is not sealed, the processed porous material has super-hydrophobicity, can effectively isolate the erosion of corrosion mediums such as aqueous vapor and pollutants on the material, can be used for surface treatment on the porous materials such as metals, inorganic silicate and an organic polymer, and can ensure the stabilization of the performances of porosity and machinery intensity in various environment. The processing method can be used for protecting porous materials such as heat insulation materials, sound-insulation sound-absorption materials and low-density structure materials.

Description

technical field [0001] The invention relates to a method for treating porous materials with hydrogenated silicone oil. Background technique [0002] Porous materials have the advantages of low relative density, high specific strength, high specific surface area, light weight, sound insulation, heat insulation, and good permeability, and are widely used in many fields. Their pores are connected to the outside world, and have high porosity and high air permeability. At the same time, they cannot prevent water vapor and corrosive media from penetrating into the material, such as the erosion of rainwater. Corrosion of the material will reduce the performance of the material and even affect the service life of the porous material. Under certain conditions, hydrogenated silicone oil can be reacted and polycondensed into high molecular siloxane with low surface tension. Using it as an inorganic porous material, a layer of siloxane film will be formed in the pores of the material, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/28C09C3/12
Inventor 钟涛高迎九常春周铭陈群黄顺道曹继兵
Owner JIANGSU RONGCHANG NEW MATERIAL TECH
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