Preparation Of ES Fiber Containing Silicon Hydrophilic Oil Agent

ES hot-air nonwoven fabric is a hydrophobic sheet made of oriented or randomly arranged ES fibers through hot air bonding method.After hydrophilic finishing,it is regarded as a surface material for sanitary articles,such as diapers,because of its excellent softness,air permeability and tensile strength.In order to meet the development opportunities brought by the rapid growth of paper diapers market and break the current situation of the monopoly of the hydrophilic oil agent for sanitary nonwoven fabrics in China.Based on the previous research of our group,the aim of this thesis is to preparation a silicon-containing hydrophilic oil agent for ES fibers with multiple hydrophilic,rapid spreading and anti-bacterial properties.For this prupose,the effects of surfactant configuration on its interfacial properties and spreading properties were studied,the factors affecting hydrophilicity were analyzed,and the formulation components were optimized around the diaper rash problem and pilot production requirements.The results were used to evaluate the industrial application value of the oil agent.The main results and conclusions are as follows:?1?It can effectively improve the continuous penetration performance of the spinning oil agent by enhancing the adsorption of the hydrophobic base of the polyether silicone oil and the ES nonwoven fabrics and controlling the remaining components at a low HLB value.The experimental sample test results showed that the permeable time of polyether silicone oil PMS-1with a large degree of polymerization of siloxane chain?hydrophobic?was less than 2.5 seconds in five times,which exhibits excellent multiple hydrophilicity properties.And its multiple hydrophilicity properties were less affected when it compounded with low HLB value surfactants such as AEO-5 and 16C-5EO-PK,the permeable time was remain at around 3seconds,which meet the requirements of rapid penetration and continuous penetration of high-end hygiene products.?2?The spreading property of the oil agent can be greatly improved by adding the isomeric alcohol ether TO with a branched structure,which can effectively solve the problem of uneven oiling caused by rapid stretching during the spinning process.The experimental results showed that the isomeric alcohol ether TO had excellent spreadability and can significantly improve the spreadability of the compound system of polyether silicone oil and antistatic agent PK.?3?The oil agent with p-hydroxyacetophenone and citric acid can provide antibacterial and weak acid properties for the ES nonwoven fabrics respectively,which can enhance the effect of preventing diaper rash.In this experiment,the pH of the oil agent was adjusted to about 6.0 with citric acid,the content of 1 wt%of p-hydroxyacetophenone was added,and the above substances were adsorbed on the surface of the ES fiber by the front and rear spinning oil process.The results of the pilot test showed that the produced nonwoven fabrics had a pH of about 6.50,and the inhibition rate against Escherichia coli and Staphylococcus aureus was over 90%,and the inhibition rate against Candida albicans reached 70%.?4?The silicone-containing hydrophilic oil agent 17-1 was ideal for the pilot test.The cluster property of wire during the spinning process was good.After drying and shearing,the oil content OPU of the ES fibers was 0.36%,the specific resistance?was 8.95×10⁷?.cm,the average linear density Tt was 2.25 dtex,and the average crimp ratio J was 12.8%,the average breaking strength st was 6.08 cN.dtex^-1,which met the Eisai production standards.Further,the permeable time of produced nonwoven fabrics was less than 2.5 seconds in five times and the weight of rewetting was less than 0.12 g.Therefore,17-1 was considered to be suitable for industrial production and had high application value.