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A method for measuring the variable resistance of interior and exterior wall putty by elongation at break

A technology of elongation at break and elongation at break, applied in the field of analysis and testing, can solve the problems of small numerical value and difficult to measure, and achieve the effect of improving film-forming elasticity, avoiding experimental data errors, and showing obvious advantages and disadvantages.

Active Publication Date: 2020-05-05
NANJING INST OF PROD QUALITY INSPECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the ratio of base cracks to dynamic dry cracking resistance is from 40% to 300%, and the value is too small, it is difficult to measure

Method used

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  • A method for measuring the variable resistance of interior and exterior wall putty by elongation at break
  • A method for measuring the variable resistance of interior and exterior wall putty by elongation at break
  • A method for measuring the variable resistance of interior and exterior wall putty by elongation at break

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Determination of the elongation at break of the basic elastic membrane

[0046] Take by weighing 50g elastic emulsion, 30g quartz powder and 35g ground calcium carbonate powder, wherein the elastic emulsion is styrene-acrylic emulsion and vinyl acetate emulsion in different proportions, add 12.5g of water, select different proportions of styrene-acrylic emulsion and acetic acid according to table 1 Ethylene Emulsion, Formulation and Experimental Tensile Speed ​​for Optimum Elongation and Tensile Strength by Orthogonal Test Method. After the above-mentioned substances are fully stirred in the container, pour them into a 430mm×210mm glass plate mold with a size of 410mm×150mm and stick them with 1.5mm double-sided adhesive. 24h, so that the final thickness of the basic elastic membrane is 1.0±0.2mm. After the film is made, it is cured under constant temperature and humidity conditions for 48 hours. After the film is peeled off, the reverse side is up, and it is place...

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Abstract

The invention discloses a method for detecting variation resistance of inner and outer wall putty through elongation at break, namely, a method utilizing putty flexibility as a technical index. The method is characterized in that the elongation at break is detected by treating an elastic intermediate coating as a basic elastic membrane, then the putty replaces a filler in the elastic intermediatecoating to prepare an elastic membrane of the putty, and on the basis, the elongation at break can be detected; and the difference value is the detected putty flexibility.

Description

technical field [0001] The invention belongs to the field of analysis and testing, and in particular relates to a method for measuring the variable resistance performance of interior and exterior wall putty by using elongation at break. Background technique [0002] With the development of my country's construction and building materials industry, the market has put forward more refined requirements for exterior wall putty products, especially for the wide application of exterior wall insulation technology as building energy-saving products, the quality requirements for exterior wall putty are higher. [0003] The existing water-based putty is divided into interior wall putty and exterior wall putty according to the purpose. The interior wall putty is an indoor leveling putty mainly made of synthetic resin emulsion, polymer powder, inorganic gelling material, etc. as the main binder, together with fillers, additives, etc. Type three types. The general type is suitable for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/28G01N1/28
CPCG01N1/28G01N3/28G01N2203/0017
Inventor 梁峙黄祝华黄舒雯姜振军戴敏辉王斌
Owner NANJING INST OF PROD QUALITY INSPECTION