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Self-repairing polymer waterproof coiled material and preparation method thereof

A technology for polymer waterproofing and waterproofing membranes, applied in the field of building waterproofing materials, can solve the problems of insufficient self-repairing ability of waterproofing membranes, and achieve the effects of good adaptability, reduced damage, and high chemical bond energy.

Active Publication Date: 2020-08-18
POWERCHINA CHENGDU ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, technologies similar to the technical solutions in the above patents are mostly used in the industry, mainly to improve the service life of the waterproof roll layer by enhancing the puncture resistance of the waterproof roll layer. However, the self-healing ability of the waterproof roll layer is not outstanding

Method used

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  • Self-repairing polymer waterproof coiled material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041]Take 100 parts of 107 silicone rubber, 1 part of tetraethyl orthosilicate, 1 part of hydroxy silicone oil, 0.1 part of dibutyltin dilaurate (DBTDL), 0.1 part of amino functional silane (KH550), and 0.1% root inhibitor for initial mixing, Stirring speed is 80r / min, so that all components are mixed evenly, then add 10 parts of microcapsules into the above system, stir at a speed of 10r / min to obtain silicone prepolymer, and then coat it on the modified polymer layer The surface is vacuum defoamed, impregnated with glass fiber, and then coated with a layer of the above-mentioned silicone prepolymer, vacuum defoamed, left to stand at room temperature to cure, and the coil is wound, delivered, and packaged by winding rollers. Among them, the polymer layer adopts a polypropylene film with a thickness of 100 μm, which is treated with corona and grafted with glycidyl methacrylate, and the grafting rate is 5%.

Embodiment 2

[0043] Get 100 parts of 107 silicone rubber, 5 parts of ethyl orthosilicate, 5 parts of hydroxy silicone oil, 0.2 part of dibutyltin dilaurate (DBTDL), 0.5 part of amino functional silane (KH550), and 1% root inhibitor for initial mixing, Stirring speed is 120r / min to mix all components evenly, then add 30 parts of microcapsules to the above system, stir at a speed of 30r / min to obtain silicone prepolymer, and then coat it on the modified polymer layer The surface is vacuum defoamed, impregnated with glass fiber, and then coated with a layer of the above-mentioned silicone prepolymer, vacuum defoamed, left to stand at room temperature to cure, and the coil is wound, delivered, and packaged by winding rollers. Among them, the polymer layer adopts a polypropylene film with a thickness of 100 μm, which is corona treated and grafted with glycidyl methacrylate, and the grafting rate is 15%.

Embodiment 3

[0045] Get 100 parts of 107 silicone rubber, 3 parts of tetraethyl orthosilicate, 3 parts of hydroxy silicone oil, 0.15 part of dibutyltin dilaurate (DBTDL), 0.3 part of amino functional group silane (KH550), 0.5% root inhibitor for initial mixing, The stirring speed is 100r / min to mix all the components evenly, then add 20 parts of microcapsules to the above system, stir at a speed of 20r / min to obtain a silicone prepolymer, and then coat it on the modified polymer layer The surface is vacuum defoamed, impregnated with glass fiber, and then coated with a layer of the above-mentioned silicone prepolymer, vacuum defoamed, left to stand at room temperature to cure, and the coil is wound, delivered, and packaged by winding rollers. Wherein the polymer layer is a polypropylene film with a thickness of 100 μm, which is subjected to corona treatment and grafted with glycidyl methacrylate, and the grafting rate is 10%.

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Abstract

The invention discloses a self-repairing polymer waterproof coiled material and a preparation method thereof. The waterproof coiled material is composed of a self-repairing layer and two polymer layers arranged on the two sides of the self-repairing layer respectively. A microcapsule is adopted to provide a good self-repairing function for the waterproof coiled material, the waterproof coiled material can be rapidly repaired after being punctured by a plant root system, and the waterproof function of the waterproof coiled material is guaranteed. The microcapsule is good in adaptability to a humid soil environment, where plants are planted, a core material of the microcapsule can be solidified in the humid environment under the condition that a catalyst is not used, repairing of the waterproof coiled material is completed, and the self-repairing period is greatly shortened. The self-repairing layer adopts organic silicon cured at the room temperature as a matrix, a precursor of the self-repairing layer is in a liquid state, a high-temperature reaction is not needed in the curing process, damage to the microcapsule in the self-repairing forming process can be reduced, and the retention rate of the microcapsule can be greatly increased. The waterproof coiled material has a good waterproof property, root resistant property, self-repairing property, and flame retardant property, anda long service life.

Description

technical field [0001] The invention relates to the technical field of building waterproof materials, in particular to a self-repairing polymer waterproof membrane and a preparation method thereof. Background technique [0002] The infiltration of rainwater, groundwater and domestic water into the building will cause damage to the skeleton structure and wall state of the building, affect the quality of the building, and shorten the service life of the building. Therefore, building waterproofing works are the basis for ensuring the quality of the project. [0003] In recent years, with people's emphasis on ecological and environmental issues, roof planting technology has been widely promoted in construction projects, which can not only improve the appearance of buildings, but more importantly, improve the ecological environment of building roofs and provide more environmentally friendly living, working environment. However, the development of roof planting technology is curr...

Claims

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Application Information

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IPC IPC(8): B32B27/16B32B27/06B32B27/32B32B7/12B32B33/00B32B37/02C08L83/04C08L63/02C08L61/24C08K7/14C08K5/544C08J5/24C08J5/04E04D5/10
CPCB32B27/16B32B27/08B32B27/32B32B7/12B32B33/00B32B37/02C08J5/24C08J5/043E04D5/10B32B2037/243B32B2250/242B32B2255/10B32B2255/26B32B2255/28B32B2262/101B32B2307/7265B32B2307/3065B32B2307/308B32B2419/06C08J2383/04C08J2483/04C08J2463/02C08J2461/24C08K7/14C08K5/544Y02A30/254Y02B80/32
Inventor 李驰昊张丹张立祥周围徐自享
Owner POWERCHINA CHENGDU ENG
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