The ironing resistance of fabrics is very important for garment manufacturers and users, especially chemical fiber fabrics, if they do not grasp the heat resistance, will bring unnecessary losses to factories and individuals.
Ironing resistance can be tested with a thermostat iron, the temperature starts from the lowest, ironing on the fabric for about 10s, and then wait for it to cool, look at the fabric changes, if no damage can gradually increase the temperature until it changes. The criteria for non-destructive specimens are:
(1) Do not worry yellow, do not change color or yellow discoloration when hot, but after cooling can still restore the original fabric color.
(2) The physical and mechanical performance indicators of the fabric are basically not affected.
(3) No hardiness, no melting, no deterioration, no shrinkage, no change in hand.
Second, the aging of the fabric
In the process of processing, storage and use, the fabrics are subject to various environmental factors such as light, heat, radiation, oxidation, hydrolysis, temperature and humidity, etc., which degrade performance and eventually lose their use value. This phenomenon is called aging. The characteristics of the fabric to resist aging are called aging resistance, which is a typical result of the frequency and time of physical, chemical and biological effects, and directly affects the durability of the fabric.
Aging of fabrics is mainly reflected in the deterioration of mechanical properties such as brittleness and elasticity of fabrics; fading of fabrics, yellowing, dullness, damage, appearance of molds, etc.; degradation of appearance characteristics; the fabrics are electrically insulated or conductive and conductive. Light or discoloration, resistance to high temperature or deformation, high strength and high modulus or high elasticity, high moisture absorption or water repellency, oil absorption or stain resistance, resistance to degradation or biocompatibility disappear. The fabrics that were originally thought to be available became unusable and even created insecurity and harm.
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