Research On Four New Functional Textiles Testing Methods

In recent years,people pay more and more attention to environmental safety and their own health,and the warmth and shelter of traditional textiles can not satisfy people's pursuit of high quality of life.Functional textiles with special functions under certain circumstances are favoured by more and more consumers.However,because some new functional textile performance testing methods and standards have not been formulated or still need to be improved,some merchants exaggerate the function of their products,misleading consumers.Therefore,in order to define and evaluate the functional textiles more scientifically,to guide enterprises and consumers to build a mutual trust relationship and to further standardize the functional textiles market,more functional textiles testing methods and standards need to be developed and introduced.Under this background,this paper mainly studies the performance test methods of the four functional textiles.It includes electromagnetic shielding clothing for pregnant women,anti-pollen textile,anti-fouling textile and storage luminous textile.For the detection of shielding effectiveness of electromagnetic shielding clothing for pregnant women,the influence of model position,posture and body shape on the detection results of shielding effectiveness is explored.The following conclusion is drawn: the relationship between the length of the electromagnetic wave and the size of the clothing opening has an important influence on the shielding effectiveness of the radiation protective clothing,when the electromagnetic wave length is less than the size of the clothing opening.When the electromagnetic wave is easier to enter the interior of the garment,it will damage the important organs of the body through reflection.The posture of the dummy model will affect the shielding effectiveness of radiation protection.When the artificial model is in the standing position,the protective effect of the anti radiation clothing is more stable;when the artificial model is in the sitting position,the shape of the hem of the garment will change somewhat.The larger the size of the shielding clothing,the wider the covering area for the human body,the more looser the wearing effect,the greater the loss of electromagnetic wave into the interior of the garment,and the better the protective effect to the human body.Finally,the method and standard of shielding effectiveness test for pregnant women with electromagnetic shielding clothing were established.The masking effectiveness of the chest and abdomen in the standing position,the shielding effectiveness of the abdomen and the abdomen under the standing posture and the sitting posture,the early pregnancy and the mid trimester of pregnancy and the late pregnancy were measured at the frequencies of 1000 MHz,1500 MHz,2000 MHz,2500 MHz,3000 MHz and 3500 MHz respectively.When the electromagnetic shielding effectiveness of the sample is above 5d B,it can be evaluated that the sample has electromagnetic radiation resistance under the corresponding test parameters.For the performance detection of anti pollen textiles,the method of self design and detection is designed,and the adsorption of the textiles to the pollen is determined by the method of absorbing the pollen of the sieve to the surface of the rotating sample,and the method of removing pollen from the impact force of the sample from a certain height to the base of the device is used to determine the pollen of the textile.Exfoliate.According to the design test method,the detection device is made,and the size and structure of the device are described in detail.During the experiment,the effect of pollen amount and roller speed on the detection results of anti pollen absorbability was studied.According to the experimental results,the amount of pollen was determined to be 0.02 g pollen for each sample,and the roller speed was set to 100r/min.Besides,the influence of the falling height of samples on the detection results of pollen fall off was also studied.According to the experimental results,the falling height was set to 20 cm.Finally,a complete testing method for pollen resistance of textiles was established.The effect of SPSS on the effects of textile on the sorption and exfoliate properties of pollen was analyzed.The results showed that the improvement of the waterproof performance of textiles enhanced its adsorption to pollen and enhanced its antistatic performance to enhance its exfoliate to pollen.For the inspection of anti-fouling textile properties,edible pigment is used,and the samples are treated by spray method.Then the samples before and after the contamination placed in the color lamp box to take photos and optimize the conditions.Then,using Photoshop and MATLAB software to determine the gray scale before and after the sample contamination,the mean gray scale difference is obtained,and the mean gray scale difference is compared with that measured under the same conditions to determine the grade threshold.Finally,an image method was established to detect the protection of textile against water-soluble contaminants.For noctilucent textiles,a self luminous luminance detection device for luminous textiles is designed,and the size,material and structure of the device are given.According to the experimental data,the duration of excitation,the type of light source and the intensity of light are determined.The excitation time length is determined to be 10 min,the type of excitation light source is defined as D65 light source and the light intensity is 1000 Lux.And using the detection conditions determined by the detection device,the samples of night light textiles with different colors were measured.Finally,according to the measured data of different color noctilucent textiles,the standard for detecting the afterglow luminance of the luminous luminous textiles was established.