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a waterproof system

A system, solid particle technology, applied in the direction of hydraulic material layered products, synthetic resin layered products, household appliances, etc.

Active Publication Date: 2022-05-24
SIKA TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] It has surprisingly been found that waterproofing systems comprising a functional layer S1 comprising at least one thermoplastic polymer P1 and at least one dispersed in a composition comprising at least A solid particle filler F in a continuous thermoplastic phase of a thermoplastic polymer P1 with a certain surface roughness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0200] The materials shown in Table 1 were used in the examples.

[0201] Table 1. Materials used in the experiments

[0202]

[0203] * EVA, ethylene vinyl acetate copolymer

[0204] Preparation of waterproof system

[0205] Exemplary and reference two-layer waterproofing systems Ex1- comprising functional and barrier layers were produced using a laboratory-scale coextrusion plant comprising two twin-screw extruders (Berstorff GmbH), a flat die and a set of water-cooled calender rolls Ex5 and Ref-1. In all two-layer waterproofing systems, thermoplastic films based on EVA-LLDPE polymer blends are used as barrier layers.

[0206] The first mixture containing the functional layer ingredients and the second mixture containing the barrier layer ingredients are melt processed in first and second twin screw extruders and coextruded over each other through a common flat die to produce a bilayer film, which is then cooled between calender rolls. The gap between the calender...

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Abstract

The invention relates to a waterproofing system comprising a functional layer S1 comprising 10-80% by weight of at least one thermoplastic polymer P1 and 10-80% by weight of at least one solid particle filler F, wherein the functional layer S1 The surface has an autocorrelation length (Sal) of waviness of at least 50 μm. The invention also relates to a method for preparing a waterproofing system and the use of mechanical surface treatment steps to increase the waviness factor as the root mean square roughness W (Sq) of the waviness of the surface of the functional layer S1 and the waviness The ratio of the square of the autocorrelation length W(Sal) of the degree is determined.

Description

technical field [0001] The present invention relates to waterproofing systems for use in the construction industry, such as applications in basements, roofs and tunnels, to protect concrete structures from water seepage. Background technique [0002] Waterproofing systems consisting of waterproofing membranes are commonly used in the construction industry to seal basements, underground surfaces or buildings against water seepage. [0003] State-of-the-art waterproofing membranes are single-layer or multi-layer systems comprising at least one polymer-based barrier layer to provide water tightness. Typical polymers used in barrier layers include thermoplastics such as plasticized polyvinyl chloride (p-PVC) and thermoplastic polyolefins (TPO) or elastomers such as ethylene-propylene diene monomer (EPDM) and cross-linked Chlorosulfonated polyethylene (CSPE). One of the disadvantages of polymer-based barrier layers is their poor adhesion properties. They generally exhibit low ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/30B32B27/34B32B27/36B32B13/12
CPCB32B13/12B32B27/08B32B27/30B32B27/302B32B27/304B32B27/34B32B27/36B32B2264/10B32B2264/101B32B2264/102B32B2264/104B32B2264/107B32B2307/538B32B2307/7265B32B2419/06B32B2581/00B28B3/22B29C43/24B29C2793/009B29K2023/0625B29K2023/083C04B24/2635C04B28/04C04B41/009C04B41/5346C04B41/72C04B2103/40C04B2111/27
Inventor D·卡维泽尔W-R·哈克H·阿克曼
Owner SIKA TECH AG