Study On Preparation And Thermal Comfort Of Infrared Transmitting Fiber Fabric

As the global temperature rises,in order to create a comfortable environment in the hot summer,the world needs to consume 15% of electricity and emit 10% of greenhouse gases.Saving summer cooling energy consumption is one of the effective ways of building energy conservation.By improving the efficiency of traditional cooling methods in summer to reduce energy consumption,it has been extensively studied.In addition to improving the efficiency of traditional air conditioning and refrigeration systems,equipment or materials that directly face the cooling of the human body also have development and application prospects,and show better energy-saving effects.Polyethylene,as an infrared functional material with good transmittance for thermal radiation in the infrared band,is used in personal thermal control clothing to improve the radiation and heat dissipation of the human body and enhance the cooling effect of the human body.However,due to the problems of high transparency of visible light and poor air permeability of ordinary polyethylene film,the application of personal thermal regulation clothing is limited.In order to expand the application of infrared high-permeability polyethylene fiber fabrics in the field of human body heat regulation and apparel,this article uses melt electrospinning technology to prepare an infrared high-permeability polyethylene fiber fabric,which can improve the human body's infrared radiation and heat dissipation,and improve the visible light Opacity enhances the feasibility of its application in personal thermal regulation clothing.First,through melt electrospinning technology,using high molecular weight polyethylene as the raw material,and liquid paraffin as the solvent,a new infrared transparent fiber fabric was experimentally prepared,and the fiber concentration,spinning voltage,and feed rate of the fiber were studied.The influence of diameter and micro-morphology.Secondly,the infrared transmittance and visible light opacity of the infrared high-permeability polyethylene fabric were tested experimentally,and the influence of the microstructure of the fiber on its performance was studied.It is found that the infrared transmittance of the fabric decreases with the increase of the fiber diameter.When the fiber diameter is 20.47 ?m and the thickness is 109.6 ?m,the infrared transmittance of the fabric is 0.35 and has a high visible light opacity.Finally,the simulation calculation and experimental test of the human skin surface temperature of infrared high permeability polyethylene fiber fabric used for human thermal regulation.The theoretical calculation results agree well with the experimental test data,and the maximum error is less than 5%.The effects of infrared transmittance,emissivity,fabric thickness,and thermal conductivity of clothing fabrics on the indoor air-conditioning setting temperature in summer were studied.It was found that the infrared transmittance increased by 0.1,and the summer indoor air-conditioning setting temperature could be increased by 0.45 ?,saving about 3% Air-conditioning load,so the application of infrared transparent polyethylene fiber fabrics to the field of human clothing has certain application prospects.