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A kind of high-efficiency thermal insulation and moisturizing composite curing film for concrete with photothermal conversion effect

A light-to-heat conversion and curing film technology, which is applied in synthetic resin layered products, chemical instruments and methods, layered products, etc., can solve the problems of general water retention effect, difficult to adhere to special-shaped surfaces, and insufficient thermal insulation effect.

Active Publication Date: 2020-11-06
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But generally speaking, the current moisturizing and curing cloth / membrane materials have problems such as general water retention effect, difficulty in bonding special-shaped surfaces, and insufficient thermal insulation effect. It is necessary to develop a curing film that is more suitable for cast-in-place concrete curing

Method used

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  • A kind of high-efficiency thermal insulation and moisturizing composite curing film for concrete with photothermal conversion effect

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The concrete high-efficiency thermal insulation and moisturizing composite curing film with light-to-heat conversion effect is composed of a plastic film with light-to-heat conversion function, a superabsorbent resin material and a water-permeable tight layer. The materials are bonded by hot melt adhesive and water-based adhesive. Knot. The plastic film contains 0.05% europium complex, and the photothermal conversion efficiency is 0.8. The superabsorbent resin material is polyacrylate. The water-permeable airtight layer is spunlace non-woven fabric, and its surface density is 20 g / m 2 . The hot melt adhesive is EVA glue, and the consumption is 0.5 g / m 2 . The water-based glue is polyvinyl formal, and the peel strength with the substrate is 10N / 10mm. The saturated water absorption of the superabsorbent resin material is 150%.

Embodiment 2

[0020] The concrete high-efficiency thermal insulation and moisturizing composite curing film with light-to-heat conversion effect is composed of a plastic film with light-to-heat conversion function, a superabsorbent resin material and a water-permeable tight layer. The materials are bonded by hot melt adhesive and water-based adhesive. Knot. The plastic film contains polyaniline and polypyrrole with a total mass fraction of 0.06%, and the light-to-heat conversion efficiency is 0.8. The superabsorbent resin material is polyacrylamide. The water-permeable airtight layer is spunlace non-woven fabric, and its surface density is 80 g / m 2 . The hot melt adhesive is a thermoplastic styrene-butadiene block copolymer, and the consumption is 1 g / m 2 . The water-based glue is made of borax-modified polyvinyl alcohol, and the peel strength with the substrate is 8N / 10mm. The saturated water absorption of the superabsorbent resin material is 350%.

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Abstract

The invention relates to a high efficiency thermal insulation and moisturizing composite maintenance membrane for a concrete with a photothermal conversion effect. The membrane is composed by compounding plastic film with a photothermal conversion function, a super absorbent resin material and a water permeable sealing layer in turn, the materials are bonded through a hot melt adhesive and a water-base cement, and the problems that a current moisturizing caring cloth / film material has a general constant water retention effect, a special-shaped surface is difficult to adhere tightly, and a heatpreservation effect is insufficient are solved.

Description

technical field [0001] The invention belongs to the technical field of concrete maintenance, and in particular relates to a concrete high-efficiency thermal insulation and moisturizing composite maintenance film with light-to-heat conversion effect. Background technique [0002] Reasonable maintenance is the key control link to ensure the quality of concrete engineering, and it is very important to control the early dehydration cracking, later drying shrinkage cracking and temperature cracking of concrete. How to realize the whole process of concrete heat preservation and moisture preservation, reduce the risk of concrete drying shrinkage cracking and temperature stress cracking, and improve the durability of concrete structures has always been a hot spot in the field of concrete research. [0003] For most cast-in-place concrete, the commonly used curing methods are artificial watering curing and spraying curing agent curing, but these two methods have great deficiencies in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/00B32B27/06B32B27/08B32B27/12B32B27/30B32B5/02
CPCB32B5/022B32B27/00B32B27/08B32B27/12B32B27/30B32B27/306B32B27/308
Inventor 谢永江程冠之曾志蒋睿郑新国汪加蔚刘子科李书明董全霄刘竞郁培云李世达杨德军刘相会
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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