Definition of Smart Thermoregulating Textiles
Smart thermoregulating textiles refer to smart textiles that respond to temperature or temperature changes. It surpasses the single thermal insulation function of traditional textiles and is a new material with two-way temperature regulation for the purpose of improving comfort. It is a high-tech product that combines phase change heat storage technology (referred to as PCM) and textile finishing technology. It has the functions of automatically absorbing, storing, distributing and releasing heat, and has the effect of intelligent temperature regulation, which can prevent The drastic temperature changes of the human body create a comfortable temperature environment.
The principle of temperature adjustment is to use the phase change material contained in it to undergo a solid-liquid reversible conversion with the change of the external environment temperature, that is, when the ambient temperature rises, the phase change material changes from a solid state to a liquid state, absorbing heat and storing it inside the fabric; when the temperature decreases When the phase change material changes from liquid to solid, it releases the stored heat, maintains the body surface temperature, and makes the human body in a comfortable state.
The difference between smart temperature-regulating textiles and traditional thermal insulation clothing
Traditional clothes mainly take advantage of the extremely low thermal conductivity of air, and use the method of increasing the static air inside the fabric to avoid heat loss. Its thermal insulation effect mainly depends on the thickness and density of the fabric, and its thermal insulation effect is affected by external compression and moisture. ；
The heat preservation mechanism of smart air-conditioning fabrics is a brand-new heat preservation mechanism that can provide a comfortable "microclimate environment" for the human body, and can heat regulation rather than just heat insulation. Regardless of whether the temperature of the external environment increases or decreases, textiles containing phase change materials can act as a "regulator" between the human body and clothing, and between clothing and the external environment, buffering changes in the external environment temperature.
The secret of smart thermostat
The secret of the automatic temperature adjustment of smart textiles lies in the phase change microcapsules (Micro-PCM) contained in the fabric. Phase change materials refer to substances that change physical properties with temperature changes and can provide latent heat. In short, phase change materials can store or release heat through solid-liquid conversion. (When the outside temperature rises to the melting point of the phase change material, the phase change material inside the microcapsule melts (endothermic); when the outside temperature decreases to the freezing point of the phase change material, the phase change material inside the microcapsule solidifies (exothers heat).) After the phase change material is processed on the fabric through the fabric finishing technology, the fabric has the function of absorbing or releasing heat.
The application of phase change microcapsules in textiles is generally divided into three processes: impregnation, screen printing and spinning.
Impregnation is generally suitable for fabrics with good water absorption, such as cotton and other fabrics. The process will not change the shape of the fabric, and the better the water absorption of the fabric, the more phase change microcapsules will be absorbed.
Screen printing is suitable for most fabrics, and phase-change microcapsules are printed on fabric garments through screen printing technology. Screen printing can also customize some patterns and styles according to customers' needs and ideas.
Bedding: quilts, pillowcases, mattresses, blankets, sleeping bags, sheets, swaddlings, pet beds, etc.;
Clothing: coats, sportswear, isolation clothing, knitwear, underwear, gloves, hats, helmets, orthopedic fixtures, bandages, pet clothing, etc.,
Shoes and socks: shoes, boots, insoles, socks, etc.,
Chair cushion: seat cushion, back cushion, wheelchair cushion, etc.;