Method for testing insulating property of textile

A technology of heat preservation performance and detection method, which is applied in the direction of textile testing, material inspection products, material thermal conductivity, etc., and can solve problems such as inaccurate detection, slow heat dissipation of test boards, and methods for detecting fabric heat preservation performance indicators that have never been reported.

Inactive Publication Date: 2007-05-09
NINGBO TEXTILE INSTR FACTORY
View PDF0 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, serious thermal inertia problems appeared on the test board. When the sample was covered, especially when the fabric was thick, the upward heat dissipation of the test board was very slow. When the temperature reached the upper limit, even though the heating power was over, the temperature still went up——overshoot, The temperature of the test board drops very slowly, and it takes a long time to drop 0.1°C, and the amount of each overshoot is inconsistent
Similarly, when the temperature reaches the lower limit, the temperature of the test board continues to drop even though it is powered on and heated in time, and it will take a while to rise, resulting in a large duty cycle deviation. If the power-on and power-off time is directly used as the detection measurement of the instrument, the result will inevitably be large deviation
[0004] In addition, for the instruments produced by various companies, t...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for testing insulating property of textile
  • Method for testing insulating property of textile
  • Method for testing insulating property of textile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The detection method of the present invention adopts a flat heat preservation instrument as a basic test method, and calculates various data of the heat preservation performance of textiles based on thermal engineering principles and calculation formulas for material heat transfer coefficients. As shown in Figure 1, the tester is equipped with a sample plate, a protective plate and a bottom plate, and each heating plate is separated by a heat insulating material to ensure the accuracy of the test temperature. In order to protect the sample from the influence of the surrounding air, a transparent cover is installed on the periphery, the door is opened in front of the transparent cover, and a window is opened on the top. Figure 2 shows the microcomputer control system and data processing center, using single-chip microcomputer U 1 (ATMEL89C55WD) and microcontroller U 2 (ATMEL89C2051) Dual CPU control, MCU U 2 The function is to sample and read the temperature of the tem...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A method for detecting thermal insulation property of textile product TP includes heating test plate and protective plate as well as base plate to be temperature of 16deg.c higher than ambient one by instrument, judging whether temperature difference TD between test plate and ambient is over 16 minus or plus 0.5deg.c or not and increasing or decreasing duty ratio of square wave if it is to make TD be in scope of set value, detecting actual TD between test plate and average ambient then calculating out thermal insulation index and clausius value of TP according to final duty ration of square wave and heating power of test plate.

Description

technical field [0001] The invention relates to a method for detecting the thermal insulation performance of textiles, in particular to a method for measuring the temperature difference with a constant power and calculating the thermal insulation rate, heat transfer coefficient and Cro value of textiles. Background technique [0002] At present, most domestic and foreign textile thermal insulation performance tests use flat-plate thermal instruments, and establish a detection system that can only dissipate heat upward. Heat preservation by means of electricity to obtain the start-stop rate of heating the test plate, and then use the heat transfer coefficient of the material in "Thermal Engineering": U=P / A(T p -T a ) as the basis; calculated according to the relevant formula of the textile insulation performance testing standard GB11048-89; obtain the insulation rate, heat transfer coefficient, and Cro value of the textile. The standard theoretical basis of this method is c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N25/20G01N25/18G01N33/36
Inventor 胡君伟沈建明陈贤军
Owner NINGBO TEXTILE INSTR FACTORY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap