Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Line type large-strain flexible resistance type temperate sensor

A temperature sensor, large strain technology, applied in thermometers, thermometer parts, thermometers using directly heat-sensitive electrical/magnetic components, etc. and other problems, to achieve the effect of slowing down oxidation, large deformation ability, and large resistance to external force.

Pending Publication Date: 2019-10-25
DONGHUA UNIV
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the characteristics of high strength and low elongation of metal materials, the existing temperature sensor uses a hard shell to package the temperature sensing body, which is generally divided into disc type, cylindrical type, bead type, armored type and thick film type. Temperature-sensing metal elements are mostly hard, not deformable and large in size
There are also researches on the direct use of temperature-sensing metal wires with extremely fine diameters as temperature-sensing elements. However, due to the extremely thin diameters of the metal wires, they are easily broken and invalidated by external forces, which makes it difficult to manufacture the sensor, and the conditions for making the sensor are relatively harsh. Short service life of components

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
  • Line type large-strain flexible resistance type temperate sensor
  • Line type large-strain flexible resistance type temperate sensor
  • Line type large-strain flexible resistance type temperate sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: PDMS / (Pt / PU) linear large strain flexible temperature sensor

[0025] The cladding layer is PDMS elastomer, and its elongation at break is 140±10(%); the core is Pt fiber helically wrapped on polyurethane (PU) multifilament, and the elongation at break of PU is greater than 450%.

[0026] (1) Core spinning

[0027] The core body is made of Pt fiber as the outer covering yarn and spandex multifilament (PU) as the core yarn. A hollow ingot wrapping machine is used to wrap the Pt fiber on the surface of the spandex yarn with a twist of 1000 twists / m, that is, a pitch of 1 mm. Among them, the diameter of Pt fiber is 20 μm, and the purity is 0.999; the fineness of polyurethane multifilament is 1200D.

[0028] (2) Preparation of PDMS / (Pt / PU) linear large-strain flexible temperature sensor

[0029] Put the above-prepared core yarn into a heat-shrinkable tube with a diameter of 1 mm, inject PDMS into the heat-shrinkable tube with an injection agent (sizing mate...

Embodiment 2

[0030] Embodiment 2: PDMS / (Cu / PU) linear large strain flexible temperature sensor

[0031] (1) Core spinning

[0032] The core body is made of Cu fiber as the outer covering yarn and spandex multifilament (PU) as the core yarn. A hollow ingot wrapping machine is used to wrap the Cu fiber on the surface of the spandex yarn with a twist of 2000 twists / m, that is, a pitch of 0.5 mm. Among them, the diameter of Cu fiber is 300 μm, the purity is 0.999; the fineness of polyurethane multifilament is 1200D.

[0033] (2) Preparation of linear large-strain flexible temperature sensor

[0034] Put the above-prepared core yarn into a heat-shrinkable tube with a diameter of 1 mm, inject PDMS into the heat-shrinkable tube with an injection agent (sizing material: curing agent = 10:1 configuration), place it in an oven, and heat it at 80°C. After 70 minutes of curing, the heat-shrinkable tube shrinks at the same time, and finally the outer heat-shrinkable tube is removed to prepare a PDMS...

Embodiment 3

[0035] Embodiment 3: PU / (Ni / PU) linear large strain flexible temperature sensor

[0036] (1) Core spinning

[0037] The core body is made of Ni fiber as the outer covering yarn and spandex multifilament (PU) as the core yarn. A hollow ingot wrapping machine is used to wrap Ni fibers on the surface of spandex filaments with a twist of 1000 twists / m, that is, a pitch of 1 mm. Among them, the diameter of the Ni metal fiber is 300 μm, and the purity is 0.99; the fineness of the polyurethane multifilament is 840D.

[0038] (2) Preparation of PU / (Ni / PU) linear large-strain flexible temperature sensor

[0039] First shrink the heat-shrinkable tube, put the above-prepared core yarn into the shrinkable heat-shrinkable tube with a diameter of 1 mm, inject polyurethane resin into the heat-shrinkable tube with an injection, and cure it for 1 hour under natural conditions, and finally put the outer layer into the heat-shrinkable tube. The PU / (Ni / PU) linear large-strain flexible temperat...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
elongation at breakaaaaaaaaaa
Login to View More

Abstract

The invention relates to a line type large-strain flexible resistance type temperate sensor, which comprises a core body and a coating layer, wherein the core body comprises a temperature-sensitive fiber and an elastic fiber; the temperature-sensitive fiber is wound out of the elastic fiber through a spiral line way; and the coating layer is a non-conductive high polymer elastomer and is coated out of the core body for fixing and protecting the core body. When the sensor carries out axial stretching, the sensor has the characteristic of large strain and good external force damage resistance capability.

Description

technical field [0001] The invention relates to a temperature sensor, in particular to a linear large strain flexible resistance temperature sensor. Background technique [0002] Temperature is a physical quantity that characterizes the degree of coldness or heat of an object. It is closely related to human life. Human beings cannot do without temperature. Departments such as industry, agriculture, commerce, scientific research, national defense, medicine, and environmental protection are all closely related to temperature. Temperature can only be measured through certain characteristics of objects that change with temperature. The principle of temperature sensing of resistive temperature sensors is to convert temperature information into device resistance information output, which belongs to the cutting-edge products of temperature detection. [0003] Most of the commonly used resistance temperature sensor temperature sensing elements are made of pure metal materials. As a ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/16G01K1/08
CPCG01K1/08G01K7/16
Inventor 李乔杨倩王玺杨涛王子懿李豪丁辛
Owner DONGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com