Preparation method of high-temperature-resistant modified retarder

A technology of retarder and high temperature resistance, which is applied in the field of preparation of high temperature resistant modified retarder, can solve the problem that the retarder does not have the ability to adapt to high temperature conditions, and achieve the effect of improving thermal stability and good thermal stability

Inactive Publication Date: 2019-06-28
蒋留平
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  • Abstract
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Problems solved by technology

[0011] The technical problem to be solved by the present invention: Aiming at the problem that most of the currently used retarders do not have the ability to adapt to high temperature conditions, a method for preparing a high temperature resistant modified retarder is provided

Method used

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  • Preparation method of high-temperature-resistant modified retarder

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Embodiment Construction

[0030] In parts by weight, 45-50 parts of silicon carbide whiskers, 120-130 parts of acetone and 3-5 parts of sodium dodecyl benzene sulfonate were weighed and placed in a mortar, ground and dispersed and the dispersion slurry was collected, and then In parts by weight, weigh 45-50 parts of dispersion slurry, 10-15 parts of plasticizer DOP, 25-30 parts by mass of 10% polyvinyl alcohol solution and 1-2 parts of dimethyl silicone oil and place them in a beaker , stir and mix and let stand for 3-5 hours to get the matrix slurry, the matrix will be cast into sheets and dried naturally, and then the sheet will be lifted, and the thickness of the sheet will be controlled to be 300-350 μm. Trichloromethylsilane is used as source material, argon is used as diluent gas, hydrogen is used as carrier gas, and the molar ratio of trichloromethylsilane to hydrogen is controlled to be 1:10. coating layer, and then the deposited coating layer is used as a matrix material for casting treatment, a...

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Abstract

The invention relates to a preparation method of a high-temperature-resistant modified retarder, belonging to the technical field of sealing materials. According to the technical scheme, a silicon carbide whisker is utilized for modification, and a laminar matrix material is prepared through coating, so that on one hand, a polymer is endowed with the rigidity and thermal stability of an organic material, namely a laminar matrix substance, through the addition of the laminar matrix substance; on the other hand, the partial polymer is inserted among laminar inorganic material slice layers, the partial thermal decomposition effect is effectively shielded by the slice layer structures, and the micromolecule motion caused during the thermal decomposition is impeded, so that the polymer represents good heat stability. According to the retarder prepared by virtue of the scheme, polar groups are effectively released to the surface of cement particles to form an adsorption layer, and the adsorption layer is capable of preventing the contact between the cement and water so as to decrease the cement hydration speed and achieve a retarding effect, so that the heat stability of the material isimproved.

Description

technical field [0001] The invention relates to a preparation method of a high-temperature-resistant modified retarder, which belongs to the technical field of sealing materials. Background technique [0002] With the rapid development of the national economy, the demand for oil and natural gas has increased year by year, which has brought new challenges to my country's oil energy and strategic resource security. At present, most shallow oil and gas resources in China are close to depletion after long-term exploitation, and most oil fields have entered the middle and late development stage, with limited recoverable and easy-to-recover reserves. In order to increase crude oil production and support the development of the national economy, exploration and development work has begun Expansion to deep oil and gas reservoirs, especially the discovery of a large number of deep wells and ultra-deep wells in recent years, has brought people gratifying oil reserves, but also brought ...

Claims

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Application Information

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IPC IPC(8): C04B24/42C04B103/22
Inventor 蒋留平
Owner 蒋留平
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