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A bidirectional temperature control switch system and method based on shape memory polymer

A technology of memory polymer and temperature control switch, which is applied in the direction of differential temperature switch, electric switch, thermal switch, etc., can solve the problems of limiting the use range of temperature control switch, unable to use normally, complicated structure, etc., and achieves the control link of system structure Less, simple structure, strong anti-electromagnetic environment effect

Active Publication Date: 2019-11-15
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Temperature control switches are widely used in household appliance motors and electrical equipment, such as washing machine motors, air-conditioning fan motors, transformers, ballasts, electric heating appliances, etc. It cannot be used normally, which limits the scope of use of the temperature control switch

Method used

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  • A bidirectional temperature control switch system and method based on shape memory polymer
  • A bidirectional temperature control switch system and method based on shape memory polymer
  • A bidirectional temperature control switch system and method based on shape memory polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1As shown, a two-way temperature control switch system based on shape memory polymers includes a polymer two-way switch 1, a terminal post 2, a connecting wire 3, a base 4, and a carbon paste layer 5; the base 4 is a rectangular plate, and the base 4 The short axis direction of the base is the X axis, the long axis direction of the base 4 is the Y axis, and the normal direction of the plane of the base 4 is the Z axis to establish an OXYZ coordinate system; the polymer bidirectional switch 1 is made of a polymer with shape memory ; There are two terminal posts 2, and the two terminal posts 2 are installed on the base 4 along the Y-axis direction; a polymer bidirectional switch 1 is installed in the center between the two terminal posts 2, and the polymer bidirectional switch 1 is fixedly installed on the base On 4, the polymer bidirectional switch 1 is divided into two directions, A and B, in the direction of the Y axis. The polymer bidirectional switch 1...

Embodiment 2

[0044] The preparation method of polymer bidirectional switch 1 is:

[0045] S1, respectively make styrene polymer fiber 12 (Tg100) and epoxy resin fiber 13 (Tg150) with shape memory effect and solidify, after the fiber is cured and demolded, styrene polymer fiber 12 and epoxy resin fiber 13 are respectively Stretch 45% and 90% respectively in a temperature box with an ambient temperature of 120°C and 170°C, and the lengths of the styrene polymer fibers 12 and epoxy resin fibers 13 are the same after stretching;

[0046] S2, keep the tensile strain of styrene polymer fiber 12 and epoxy resin fiber 13, after temperature box temperature is down to room temperature, take out styrene polymer fiber 12 and epoxy resin fiber 13, now styrene polymer fiber 12 and epoxy resin fiber 13 can maintain predetermined tensile strains of 45% and 90%;

[0047] S3. Put the stretched styrene polymer fibers 12 and epoxy resin fibers 13 into the mold of the styrene polymer matrix 11 respectively ac...

Embodiment 3

[0050] Such as figure 2 As shown, when the temperature is lower than 50°C, the styrene polymer matrix 11, the styrene polymer fiber 12 and the epoxy resin fiber 13 are all in a glassy state; when the ambient temperature is 50-100°C, the styrene polymer matrix 11 It is in a rubber state, and both the styrene polymer fiber 12 and the epoxy resin fiber 13 are in a glass state, so when the temperature is less than 100°C, the temperature control switch of the present invention is in the initial state at this time: the polymer bidirectional switch 1 is in a vertical position state, the polymer bidirectional switch 1 is not in contact with the terminal 2, and at this time the first work piece 6 and the second work piece 7 are both in a power-off state.

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Abstract

The invention discloses a bi-directional temperature control switch system and method based on a shape memory polymer. The system comprises a bidirectional polymer switch, carbon paste layers, bindingposts, a connecting line and a pedestal. The bidirectional polymer switch is made of a polymer possessing a shape memory. The carbon paste layers are uniformly smeared on the two sides of the bidirectional polymer switch. There are two binding posts. The two binding posts are located on the two sides of the bidirectional polymer switch. The bidirectional polymer switch is bended towards two sidesunder different temperatures so that the two carbon paste layers and the two binding posts are contacted and conducted. Through the connecting line, the bi-directional temperature control switch system is connected to a peripheral circuit. By using the bi-directional temperature control switch system, electronic components are less, the structure is simple and light, the bidirectional deformationof a temperature control switch is realized, and the mechanical performance of a material is fully used; compared with a traditional temperature switch, the temperature switch has a high electromagnetic resistance environment and can realize the functions of the switch in a harsh electromagnetic environment, and the usage range of the temperature control switch is widened.

Description

technical field [0001] The invention relates to the field of temperature control switches, in particular to a bidirectional temperature control switch system and method based on shape memory polymers. Background technique [0002] Shape memory polymer is a new type of intelligent material, which has the ability to maintain temporary deformation under different external environment excitations (heat, light, magnetism, etc.), and can return to the original shape when it is again stimulated by the same external environment. Thus, the memory function of the initial shape is exhibited, and the elastic modulus of the shape memory polymer in the rubber state is much lower than that in the glass state. [0003] The temperature control switch is a temperature switch that uses a bimetallic strip as a temperature sensing element. When the electrical appliance is working normally, the bimetallic strip is in a free state and the contacts are in a closed / open state. When the temperature r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H37/32H01H37/00H01H11/00
CPCH01H11/00H01H37/006H01H37/323
Inventor 冷劲松刘彦菊刘立武辛晓洲林程兰鑫
Owner HARBIN INST OF TECH
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