Test And Characterization Of Infrared Management Properties Of Porous Polymeric Materials Based On Skin Coupling

As the representative of functional materials,thermo-functional porous polymers are closely related to the comfort of clothing and various extended products.they are an important index to evaluate their performance and are moving towards more intelligent,humanized and multifunctional.However,at present,the methods of dynamic detection,evaluation and characterization of infrared management characteristics of porous polymer materials at home and abroad are not mature,the detection technology is single,and there is no method to integrate dynamic testing,quantitative description and accurate identification of infrared properties of porous polymers.Based on the current research situation at home and abroad and the previous research results of our research group,this thesis studied the evaluation index,objective test,evaluation method,classification and characterization method of infrared radiation performance of porous polymer materials under skin coupling.A mechanical testing system was proposed to simulate the coupling effect of infrared radiation between porous polymer materials and skin,and the dynamic interaction process between the coupled cooperative body and the outside environment,to obtain the dynamic change information during the action,and to test the infrared management characteristics of porous polymer materials dynamically.Based on the proposed test method,the bionic skin model and tester were built,including the multi-sensory test system of the machine,and the software and hardware system of measuring and controlling.Based on the analysis of typical infrared management characteristic curves under skin coupling in the prediction model,a total of 12 evaluation indexes of infrared management characteristics of porous polymer materials based on skin coupling were established in this thesis,including the immediate infrared reflection intensity,the immediate infrared transmission intensity,infrared emission intensity at reflection,infrared emission intensity at the transmission end,dynamic change rate of infrared intensity at transmission end,dynamic change rate of infrared intensity at reflective end,the steady-state infrared reflection intensity,the steady-state infrared transmission intensity,the skin influence ratio of the dynamic change rate of infrared intensity at the reflex end,the skin influence ratio of the dynamic change rate of infrared intensity at the transmission end,maximum difference of infrared emission intensity between sweating non-sweating reflex,and maximum difference in transmission infrared emission intensity t sweating and non-sweating.For the validity of the test system and the evaluation index,the objective tests were conducted on 12 typical porous polymer samples with or without skin and whether the skin sweated or not on the self-made test system.As a result,the defined evaluation indexes are effective,the equilibrium state indexes are consistent with the FTIR test results,and the developed test system and the defined evaluation index system can be used for comprehensive testing and evaluation of infrared management properties of porous polymeric materials.In order to characterize and distinguish the infrared management characteristics of porous polymeric materials,the index classification was studied,and the index classification table was obtained by analyzing the experimental results of 150 groups of large samples.The micro-surface morphology of porous polymer materials was tested by scanning electron microscope,and the porosity was obtained.The infrared characteristics of porous polymer materials were characterized by correlation analysis.In this thesis,a dynamic and integrated testing and characterization method and evaluation index system for infrared management characteristics of porous polymeric materials based on skin coupling was proposed.