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A near-infrared light self-healing flexible sensor and a preparing method thereof
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A flexible sensor and near-infrared light technology, applied in the field of flexible sensors, can solve the problems of difficult device heating operation and processing, and achieve the effects of low cost, widening field and simple manufacturing process
Pending Publication Date: 2018-11-30
HARBIN ENG UNIV
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Abstract
Description
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Problems solved by technology
Self-healing flexible sensor devices have a wide range of applications, which also makes it difficult to directly heat the device in some special applications. Therefore, it is an urgent problem to develop a flexible sensor that can generate non-contact heating.
Method used
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[0093] Methylisocytosine (65 g) and hexamethylene diisocyanate (HDI, 650 g) were stirred and reacted at 100° C. for 16 h under the protection of argon, and a white precipitate was obtained after the reaction was completed. After cooling to room temperature, 1 L of n-hexane was added and vigorously stirred for 1 h, filtered, washed with n-hexane, dried in vacuo to obtain a white powder.
[0099] 22.4g of hydrogenated polybutadienediol HLBH-P3000 (Cray Valley, U.S., linear hydroxyl-terminated hydrogenated polybutadiene, 3.2kD) was vacuum-dried at 100°C for 1h (the temperature should not be too high, and the time should not be too long to prevent prolonged Decompose by heating over time...
Embodiment 1
[0112] 1 according to the following group distribution ratio
[0117] Polymer 1 and Polymer 2 are mixed and dissolved in 2000mL chloroform to make a paste, concentrated to 500mL, poured into the mold
[0118] After drying in a tool, supramolecular polymer-based materials were obtained. After the supramolecular polymer matrix is dried, carbon nanotubechlorine is uniformly sprayed
[0119] Like a solution, a flexible sensor with near-infrared light self-healing can be obtained after drying.
[0120] The material softens and self-heals at 45°C and melts at 60°C.
Embodiment 2
[0122] 1 according to the following group distribution ratio
[0127] Polymer 1 and Polymer 2 are mixed and dissolved in 2000mL chloroform to make a paste, concentrated to 500mL, poured into the mold
[0128] After drying in a tool, supramolecular polymer-based materials were obtained. After the supramolecular polymer matrix is dried, carbon nanotubechlorine is uniformly sprayed
[0129] Like a solution, a flexible sensor with near-infrared light self-healing can be obtained after drying.
[0130]The material softens and self-heals at 40°C and melts at 55°C.
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Abstract
A near-infrared light self-healing flexible sensor and a preparing method thereof are provided. The flexible sensor includes a supramolecular polymer matrix and carbon nanotubes. The supramolecular polymer matrix consists of end groups having a 2-ureido-4[1H]-pyrimidone quadruple hydrogen bond structure and polymer middle chain segments. A supramolecular polymer flexible material which can be melted or softened under stimulation of near-infrared light of 808 nm is developed, the field of self-healing flexible materials is broadened, and the material is simple in preparing process and low in cost. An obtained product can be used for the fields in which direct contact is difficult, and spontaneous damage healing is achieved through indirect heating. A replaced material can be directly cleaned, recovered, dissolved and casted for forming, thus effectively avoiding waste of raw materials, saving the application cost and increasing the economic benefit.
Description
technical field [0001] The invention relates to a flexible sensor, and also relates to a preparation method of the flexible sensor. Specifically, it is a self-healing flexible sensor and its preparation method. Background technique [0002] Flexible sensors refer to sensors made of flexible materials, which have good flexibility, ductility, and can even be bent or folded freely, and have flexible and diverse structures. Measure to detect. The new flexible sensors are widely used in the fields of electronic skin, medical care, electronics, electrical engineering, sports equipment, textiles, aerospace, environmental monitoring and so on. Flexible sensors generally consist of two parts, one part is a flexible substrate that provides support components, and the other part is a sensing component that responds to one or more stimuli. Flexible substrates generally have properties such as softness, low modulus, and easy deformation. Common flexible materials are: polyvinyl alcoh...
Claims
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Application Information
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