Development And Property Study On Composite Thermal Insulation Interlining Of Kapok And Cashmere

Composite thermal insulation interlining is becoming the major warmth material in the market.There is a special hollow structure on kapok fiber and it is applied to make filling material because of it’s super soft and lightweight. Cashmere is a kind of precious textile material but the price of cashmere is very high. The combination of kapok and cashmere could exploit their advantages to the full and lower the cost. In this paper, kapok and cashmere fiber were blended to make a new thermal insulating interlining with a three-dimensional structure through the way of needling and thermal bond. The far-infrared polyester fiber and bi-component fibers with Low melting point were used to make the material stronger and easy processing.This topic comes from Shaanxi Province Key Laboratory Project of Functional Fabric. The thermal insulating interlining was made by the way of orthogonal design experiment and other ways. There were 19 kinds of thermal insulating interlinings were processed out. The Machining processes include fiber opening and blending, carding, laying, needling and thermal bonding. The far-infrared polyester fiber and bi-component fibers with Low melting point were also applied. The properties of thermal insulation, compressibility and resilience, air permeability, breaking strength were measured and analyzed. The results showed that the best needling density is 10 punches/cm2. The temperature of thermal bond is 125 degree centigrade and time is 2 minutes. The blending ratio of kapok, cashmere, far-infrared polyester fiber and bi-component fibers is 30%, 20%, 30% and 20%. When the far-infrared polyester fiber was equally replaced by the hollow polyester, There are minor differences between the properties of these two kinds of interlinings while the chemical fibers amount is less. The research showed that the thermal insulation properties of interlining with bilayer structure is better than which with single layer structure. The different compound modes make the properties of the thermal insulating interlining change. All of the fibers uniform mixing is the best compound mode and suitable for commercial processing applications. The thermal insulating properties of these waddings were compared with different wind speeds, the measurement results show that the thermal insulation of the wadding combinations decreased. The thermal insulating properties decreased with the wind speed increasing. The thermal insulating properties change with different needling densities when the wind speed maintained. The tendency of this change is that the thermal insulating properties decreased when the needling density increases. The thermal insulating property would slightly reduce when the needle density increases to a certain extent.