Preparation method of highly-doped radiation refrigeration composite fiber and preparation method of highly-doped radiation refrigeration composite fiber fabrics

Abstract

The invention relates to a preparation method of a highly-doped radiation refrigeration composite fiber and a preparation method of highly-doped radiation refrigeration composite fiber fabrics. The preparation method of the highly-doped radiation refrigeration composite fiber comprises the steps that radiation refrigeration composite materials are prepared, and the radiation refrigeration composite materials comprise polymer substrate materials and inorganic micro-nano particles; fiber prefabricated rods containing the radiation refrigeration composite materials are prepared; and the fiber prefabricated rods are subjected to hot drawing to prepare the radiation refrigeration composite fiber. By using the hot drawing method, the radiation refrigeration composite fiber and the fabrics dopedwith the micro-nano particles with high concentration can be prepared, by regulating and controlling the macroscopic structures and shapes of the fiber prefabricated rods, the composite fiber with multiple complex structures can be prepared, and radial and angular random concentration distribution can be realized; and the fiber has excellent radiation refrigeration performance and mechanical performance, the preparation method is simple, continuous large-scale preparation can be carried out, the preparation method is suitable for being used in an industrial method, and meanwhile, different materials can be designed according to own requirements.

Description

technical field [0001] The invention relates to the field of radiation refrigeration, in particular to a preparation method of radiation refrigeration composite fiber and its fabric. Background technique [0002] Energy promotes the development and progress of civilization, and the modern life we ​​enjoy is all based on energy consumption. However, high energy consumption will cause excessive emissions of greenhouse gases, leading to global warming and disrupting the climate balance. Global warming not only brings extreme high temperature weather that threatens human health, but also limits the development of industrial labor and productivity. According to statistics from the US Department of Energy and the National Energy Administration, building space heating and cooling consumes 15% of the world's electricity and produces 10% of the world's greenhouse gas emissions, and is a major part of residential and commercial energy consumption. With the intensification of the "gr...

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Problems solved by technology

However, this method makes the mass fraction of functional fillers doped inside the fiber low, which cannot effectively block the input of solar radiation, so the radiative cooling effect is limited.

[0011] To sum up, most of the existing radiative refrigeration materials are in the state of coating or film, which cannot be used for cooling human skin because of insufficient air permeability and comfort; methods such as electrospinning are complicated in process and high in cost; The content of foreign particles is low, and the radiation cooling effect is limited

Therefore, there is currently a lack of a technology for preparing radiation cooling fibers that can be doped with inorganic micro-nano particles at a high concentration, to achieve controllable fiber shape structure and concentration distribution, and to achieve excellent radiation cooling performance while having good mechanical properties and Prepared textiles suitable for cooling the human body

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