申请人:Bonomi, Renato
公开号:EP3671150A1
公开(公告)日:2020-06-24
The present invention relates to a device for monitoring a temperature variation undergone by a product, which detects a drop in temperature below a predetermined temperature threshold (Tcs), comprising: a sealed casing (I) which defines a containment space (V), and a mixture contained, or containable, in said containment compartment (V) which comprises a liquid phase (S) and a solid (D) comprising metal particles having an average nanometric size comprised between 1 and 300 nm and a coating layer (R) of said particles.
This coating (R) comprises an organic material and is configured in such a way that, in a configuration of use of the device at a first temperature (T1) greater than said threshold temperature (Tcs), it allows the maintenance of the solid (D) in solution in said liquid phase (S), in which the particles are separated from each other, while at a crystallization temperature (T2) of said liquid phase (S), being said temperature (T2) equal to or lower than said threshold temperature (Tcs), the coating layer (R) separates from the metal particles allowing an aggregation of the metal particles. The mixture undergoes an irreversible loss of optical properties, allowing the detection of undesired temperature variation.
本发明涉及一种用于监测产品温度变化的装置,该装置可检测温度是否下降到预定温度阈值(Tcs)以下,该装置包括:一个密封外壳(I),该外壳限定了一个容纳空间(V),以及一个容纳或可容纳在所述容纳空间(V)中的混合物,该混合物包括液相(S)和固体(D),固体(D)包括平均纳米尺寸在 1 至 300 纳米之间的金属颗粒和所述颗粒的涂层(R)。
涂层(R)由有机材料组成,其配置方式为:在设备使用的第一温度(T1)高于所述阈值温度(Tcs)时,涂层(R)可以使固体(D)保持在所述液相(S)的溶液中、而在所述液相(S)的结晶温度(T2)下,即所述温度(T2)等于或低于所述阈值温度(Tcs)时,涂层(R)与金属颗粒分离,使金属颗粒聚集在一起。混合物的光学特性会发生不可逆的损失,从而可以检测到不希望出现的温度变化。