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Preparation method of degradable cement structure joint filling and separation composite material

A composite material and structure technology, which is applied in building thermal insulation materials, building structures, buildings, etc., to achieve the effect of prolonging service life, simple preparation process, and ensuring existing effects.

Active Publication Date: 2014-12-24
北京中科安途交通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The existing technology disclosed at present is mainly to research and prepare products such as degradable plastics and packaging materials, and there is no related cement structure that can be quickly disintegrated and degraded for use in cement structures such as cement pavements and cement fields. Report on the preparation method of the material

Method used

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  • Preparation method of degradable cement structure joint filling and separation composite material
  • Preparation method of degradable cement structure joint filling and separation composite material
  • Preparation method of degradable cement structure joint filling and separation composite material

Examples

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preparation example Construction

[0044] A preparation method of a degradable cement structure joint-filling and isolation composite material. The components of the preparation method are counted in parts by mass, and the steps are as follows:

[0045] 1) Preparation of plant powder main composite plate components

[0046] At room temperature, first mix 50-42 parts of plant micropowder with 46-50 parts of 40% soluble starch paste and mix evenly, then add 3.5-7 parts of cellulose micropowder and 0.5-1.0 part of superabsorbent resin micropowder for further stirring and mixing . According to the length, width and thickness of the designed plant powder main composite plate, add the above mixture into the mold for molding the plant powder main composite plate. The inner surface of the mold is coated with LUBKO1425 release agent in advance, and pressurized at 110-120 ° C. Molding, the pressure is 20-25MPa, and after 30 minutes, the temperature is lowered and the mold is demoulded to prepare a composite plate with a...

Embodiment 1

[0062] Implement a preparation method of a degradable cement structure joint-filling and isolation composite material, the components of the preparation method are counted in parts by mass, and the steps are as follows:

[0063] 1) Preparation of plant powder main composite plate components

[0064] At room temperature, 50 parts of vegetable powder and 46 parts of 40% soluble starch paste were first stirred and mixed evenly, and then 3.5 parts of cellulose micropowder and 0.5 part of superabsorbent resin powder were added and further stirred and mixed evenly. According to the length, width and thickness of the designed plant powder main composite plate, add the above mixture into the mold for molding the plant powder main composite plate. The inner surface of the mold is coated with LUBKO1425 release agent in advance, and pressurized at 110-120 ° C. Molding, the pressure is 20-25MPa, and after 30 minutes, the temperature is lowered and the mold is demoulded to prepare a compo...

Embodiment 2

[0074] Implement a preparation method of a degradable cement structure joint-filling and isolation composite material, the components of the preparation method are counted in parts by mass, and the steps are as follows:

[0075] Preparation of composite board components with vegetable powder as the main body

[0076] At room temperature, 42 parts of plant micropowder and 50 parts of 40% soluble starch paste were stirred and mixed evenly, and then 7 parts of cellulose micropowder and 1 part of superabsorbent resin micropowder were added to further stir and mix evenly. According to the length, width and thickness of the designed plant powder main composite plate, add the above mixture into the mold for molding the plant powder main composite plate. The inner surface of the mold is coated with LUBKO1425 release agent in advance, and pressurized at 110-120 ° C. Molding, the pressure is 20-25MPa, and after 30 minutes, the temperature is lowered and the mold is demoulded to prepare ...

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Abstract

The invention provides a preparation method of a degradable cement structure joint filling and separation composite material. The method comprises the following steps: obtaining a plant powder main body composite sheet material by taking plant micro-powder, soluble starch, cellulose micro-powder and high-water-absorbing quality resin powder as raw materials; and pouring by taking polymethylene polyphenyl isocyanate, a foam stabilizer, polyether polyol and dichlorofluoroethane as raw materials and compounding to obtain the cement structure joint filling and separation composite material which contains a polyurethane elastic foam sealing strip and has a degradable main body. A main body sheet material part of the composite material can be cracked and degraded after a cement structure is cured and finally the composite material basically disappears; the releasing of stress is eliminated when the cement structure is hotly expanded and coldly contracted, and rainwater, snow water and crushed gravels are effectively prevented from entering a flexible joint so that the service life of the cement structure is prolonged; and the composite material has very positive and remarkable use effects in a structure building process of a cement road, and dust and noise pollution caused by the fact that the flexible joint of the cement structure is cut by an existing method is eliminated.

Description

technical field [0001] The invention relates to a preparation method of a degradable cement structure joint-filling and isolation composite material, which belongs to the field of concrete road construction materials, and specifically relates to a method for blending and molding composite materials using soluble starch, plant micropowder, cellulose micropowder, superabsorbent resin micropowder, etc. The invention discloses a preparation method of a cement structure joint-filling isolation composite material containing a polyurethane elastic foam sealing strip and having a degradable main body prepared by pouring and compounding polyurethane elastic foam materials. technical background [0002] Cement structures such as cement pavements and cement sites are very common in our daily life. During the pouring process of cement structures, a large amount of heat will be released during the cement setting and hardening reaction, which will cause the temperature of the concrete to r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/12B29C44/04C08L3/02C08L97/02C08L1/02C08L95/00C08L75/08C08G18/48C08G18/32C08K5/12C08J9/14C08G101/00
Inventor 王畅铭姚亮于泳潭
Owner 北京中科安途交通科技有限公司
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