Phase-change temperature-regulating fiber, phase-change yarn, air-conditioning fiber, constant-temperature yarn, L-PCM light air

Phase Change Material (PCM) is a material that can change its phase (solid, liquid, gas) at a specific temperature and store latent heat. The process of changing the phase of a substance is called a phase change process, during which the phase change material absorbs or releases a large amount of latent heat, thus generating the function of cold storage or heat storage.

PCM was first used in the United States National Aeronautics and Space Administration (NASA) moon landing program. It was developed to create a new material for astronaut clothing systems that provides a comfortable body sensation and balances body temperature. It can automatically adjust temperature to cope with the extreme heat, extreme cold and drastic temperature changes in space. This technology dates back to 1987, when NASA's Johnson Space Center collaborated with private enterprises to develop phase change materials for extravehicular spacesuits, especially astronaut gloves. With the assistance of TRDC, NASA successfully applied textile materials containing microencapsulated phase change materials (mPCM) to spacesuits. The core substance of PCM, microencapsulated phase change materials, encapsulates phase change materials (core materials) in tiny capsule particles using microencapsulation technology, preventing the phase change materials from being affected by the external environment. When these materials change from solid to liquid or vice versa, they can absorb or release heat at an almost constant temperature, thus achieving the effect of autonomous temperature regulation.

Qingkong Phase Change Temperature-Regulating Fiber

01What are Phase Change Temperature-Regulating Fibers

Qingkong Phase Change Temperature-Regulating Fiber is a temperature intelligent management fiber developed by Shandong Rare Technology Development Co., Ltd. using aerospace phase change materials and fiber substrates through unique nanoscale confinement encapsulation and polymerization technology. It combines intelligent temperature control and bidirectional temperature regulation, effectively preventing "cold-heat" stress reactions and meeting the needs of physical comfort. Qingkong Phase Change Temperature-Regulating Fiber can not only provide a cool feeling in summer but also be used for heat storage and warmth retention in winter.

02Working Principle of Phase Change Temperature-Regulating Fibers

Endothermic Process:

When the ambient temperature rises, the phase change material starts to change from a solid state to a liquid state. During this process, the phase change material absorbs heat from the surrounding environment and stores it as latent heat. For example, in hot summer, the human body generates a large amount of heat. The phase change material in Qingkong Phase Change Temperature-Regulating Fiber absorbs this heat, reducing the temperature around the human body and making people feel cool. This endothermic process can effectively alleviate the impact of high temperature on the human body and improve human comfort.

Exothermic Process:

When the ambient temperature decreases, the phase change material starts to change from a liquid state to a solid state. During this process, the phase change material releases the previously stored latent heat to the surrounding environment. For example, in cold winter, the phase change material in Qingkong Phase Change Temperature-Regulating Fiber releases heat to provide external warmth for the human body and maintain a stable body temperature. This exothermic process can resist cold to a certain extent and reduce the loss of human body heat.

Qingkong Phase Change Temperature-Regulating Fiber uses the phase change characteristics of unique phase change materials to absorb or release heat when the temperature changes, achieving bidirectional intelligent temperature regulation and providing excellent physical comfort for people in complex and changeable temperature environments.

03Product Advantages of Phase Change Temperature-Regulating Fibers

(1)Ultra-High Performance

It has excellent characteristics such as high enthalpy value, high energy storage, low supercooling, and high temperature resistance, making it suitable for use in low and high temperature environments;

(2) Ecological Antibacterial Property

The key phase change raw materials are derived from biological substrates. While being ecologically safe, they also have efficient physical antibacterial properties, which are beneficial to the human body;

(3) Long-Lasting Effect

The unique microencapsulated phase change technology has high washing resistance and anti-destruction performance, can be recycled, and its physical effect lasts for a long time;

(4) Intelligent Regulation

It can intelligently regulate the temperature of the microenvironment between the skin and the human body according to changes in air temperature, reducing energy consumption and carbon emissions;

(5) Bidirectional Temperature Control

It continuously absorbs and releases heat through bidirectional solid-liquid conversion, generating a heat shielding effect and efficiently managing the cold/heat of human skin;

Wide Application Fields

01Apparel Field: Creating Comfortable Wearing Experience

In daily wear, Qingkong Phase Change Temperature-Regulating Fiber can keenly perceive changes in the external environment temperature. When the hot summer comes and the external temperature rises, the phase change material in the fiber quickly absorbs the excess heat generated by the human body, like an invisible small air conditioner, keeping people cool and comfortable at all times. In cold winter, the phase change material releases the previously stored heat, like a small and intimate heater, protecting people from the cold and reducing the trouble of frequently changing clothes.

For outdoor sports enthusiasts, when engaging in activities such as mountain climbing and hiking, the ambient temperature is complex and changeable. Sportswear made of Qingkong Phase Change Temperature-Regulating Fiber can quickly adapt to such changes. During the climb, from the low-temperature foot of the mountain to the high-temperature summit, it can timely regulate body temperature, keeping athletes' bodies comfortable and stable, and effectively reducing the risk of fatigue and injury caused by temperature discomfort.

For special occupational clothing, it also benefits from Qingkong Phase Change Temperature-Regulating Fiber. For example, when firefighters perform tasks, they will face high-temperature heat from raging fires. After adding phase change temperature-regulating fibers to their protective clothing, it can absorb a large amount of heat, reduce body surface temperature, and greatly reduce the possibility of heatstroke and scald. Polar researchers are in an extremely cold environment of ice and snow. Clothing containing Qingkong Phase Change Temperature-Regulating Fiber can continuously provide them with warmth, ensuring the smooth progress of their work.

In the home textile field, Qingkong Phase Change Temperature-Regulating Fiber also plays an important role. When applied to bedding such as bed sheets, duvet covers and pillowcases, it can accurately adjust according to changes in human body temperature during sleep. When people fall asleep, the body metabolizes and generates heat, and the body temperature gradually rises. At this time, the phase change material absorbs the excess heat, making people feel cool and comfortable. When the body temperature drops in the late night, the phase change material releases heat to maintain warmth, helping to improve sleep quality and allowing people to have a peaceful night.

In cold winter, phase change temperature-regulating blankets become intimate companions of people. They can absorb excess heat when in contact with the human body, avoiding discomfort caused by overheating. When the human body leaves, they slowly release heat to maintain the temperature of the blanket, so people will not feel cold when using it again, providing continuous warmth.

03Medical and Health Field: Assisting Rehabilitation and Care

In the medical and health field, Qingkong Phase Change Temperature-Regulating Fiber brings many conveniences to patients and medical staff. In terms of rehabilitation care, some patients are sensitive to temperature. Rehabilitation products such as knee pads and waist supports made of Qingkong Phase Change Temperature-Regulating Fiber can intelligently adjust according to changes in the local temperature of the patient's body. When the local temperature is too high, it absorbs heat. When the temperature is too low, it releases heat, promoting blood circulation, relieving pain, and helping patients recover.

In hospital operating rooms and wards, for some patients with high temperature requirements, such as newborns and the elderly, medical clothing made of Qingkong Phase Change Temperature-Regulating Fiber can provide them with a stable and suitable temperature environment, protect their health, and assist the smooth progress of medical care.

In the aerospace field, Qingkong Phase Change Temperature-Regulating Fiber plays an irreplaceable role. The space environment is extremely harsh, and temperature changes are extremely drastic. When a spacecraft is in the area directly exposed to the sun, the temperature can reach over 100 degrees Celsius. When it enters the shaded side, the temperature drops sharply to below minus 100 degrees Celsius.

The phase change temperature-regulating fiber used in the spacesuits worn by astronauts can effectively cope with such extreme temperature changes. When the temperature outside the spacesuit rises to the melting point of the phase change material, the phase change material changes from a solid state to a liquid state, absorbing a large amount of heat and preventing astronauts from heatstroke or damage to their body functions due to high temperature. When the temperature drops to the freezing point of the phase change material, the phase change material changes from a liquid state to a solid state, releasing the previously stored heat to maintain the astronauts' body temperature, preventing them from losing heat in a cold environment, and ensuring the astronauts' life safety and normal work in space. In addition, applying phase change temperature-regulating fiber to the interior decoration materials of spacecraft can also adjust the cabin temperature, creating a relatively stable and comfortable working and living environment for astronauts.

In the automotive field, using Qingkong Phase Change Temperature-Regulating Fiber in car seats and interior decorations can improve the temperature comfort inside the car. In hot summer, it can reduce the temperature of the seat surface and avoid scalding. In cold winter, it provides warmth, reduces the discomfort caused by the low temperature inside the car to passengers, and also reduces the load on the car's air conditioning system, lowering energy consumption.

In the construction field, adding Qingkong Phase Change Temperature-Regulating Fiber to building insulation materials can adjust the indoor temperature. When the indoor temperature rises, the fiber absorbs heat. When the temperature drops, it releases heat, reducing the frequency of air conditioner and heater use, lowering energy consumption, achieving the goal of energy conservation and emission reduction, and also improving the comfort of indoor living.