Pressure-sensitive composite applicable to silk-screen printing technology

Abstract

The invention discloses a pressure-sensitive composite applicable to a silk-screen printing technology. The pressure-sensitive composite is at least prepared from components as follows: carbon black,silicone rubber, nano SiO2, a silane coupling agent and naphtha, wherein the carbon black is used as conductive particles, the silicone rubber is used as a matrix material, the naphtha is used as a solvent, the nano SiO2 is used as a modified nanomaterial and the silane coupling agent is used as an aid; the carbon black accounts for 2%-10% of the mass of the silicone rubber, the silane coupling agent accounts for 2%-5% of the total mass of ingredients, the nano SiO2 accounts for 2%-10% of the total mass of the ingredients and the balance is naphtha. Compared with the prior art, the pressure-sensitive composite has the advantages that on the basis of improvement of a composite formula, production of large-area sensor arrays can be realized with a printing technology, pressure-sensitive arrays and electrode arrays prepared with the printing technology have better connectivity, better adhesion and smaller sizes, the preparation efficiency is higher, and the repeated mounting process of traditional technologies is avoided.

Description

technical field [0001] The invention relates to the technical field of pressure-sensitive materials, in particular to a pressure-sensitive composite material suitable for screen printing technology. Background technique [0002] With the improvement of technology and modernization level, people have higher and higher requirements for pressure monitoring. It is not limited to pressure monitoring on regular rigid surfaces, and there are also various forms. Ordinary rigid sensors can no longer meet people's actual needs. For example, people hope to realize real-time monitoring of physiological indicators such as heartbeat, pulse, blood pressure, respiration, etc. through wearable, stickable or even implantable methods. In addition to taking into account accuracy and safety, these products must also take into account the human body. Comfortable to wear, it can withstand various daily movements of the human body, even heavy-duty sports without affecting the performance indicators...

AI Technical Summary

Problems solved by technology

[0003] Although flexible pressure sensor technology has been greatly developed in recent years, there are few studies on large-area flexible array sensors.

In large-area integrated applications, the existing sensor based on the coating process generally prepares the pressure-sensitive layer first, and then cuts and installs it according to the application requirements. The material utilization rate is low, the thickness is too large, and the cost is too high

Secondly, the efficiency is too low, and large-area integration is only repeated installation and production of a single sensor, which is not suitable for the production of large-area high-density flexible array sensors.

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