Study On The Boiling-Bleaching Process Of Flax,Jute And Blended Rove

The products of flax have good wearing characteristics of cool tactility,straight figure,good capability of moisture absorption and emission,and the particular function of health care.Presently,the flax fiber output of our country is far from the requirement of textile industry,almost 80 percent of flax has to import from abroad, the price is expensive.The jute of our country is abundant and cheap,and the Jute has the ecological characteristic of restraint of bacterium and mildew,contradiction of ultraviolet radiation,and easy to be degraded.The capability of jute is similar to flax, therefore utilize jute to partly substitute flax material,not only can greatly reduce the cost,but also provide new approach of jute product exploitation.It redounds to increase the requirement of jute material,adequately exploit and utilize the abundant resource of jute in our country.The process of boiling and bleaching for flax roving is the most critical process in flax spinning.The purpose of boiling and bleaching is to remove pectin,lignin and other impurities,and increase the splitting and spinning ability of flax fiber.The technics of boiling and bleaching process developes recently,at present,the boiling and bleaching process of sodium chlorite and hydrogen peroxide is used more commonly.Chemical reagents used in this process such as sodium chlorite is corrosive to the equipment,let off large of poisonous gases,and endanger the health of workers,also seriously pollute the environment.Therefore,this process has been unable to meet the demands for environmental protection.This issue gropes and investigates the hydrogen peroxide boiling-bleaching process of flax and jute blended rove,avoid or reduce the environmental pollution by the use of sodium chlorite,enhances the spinning ability of blended rove,so as to use jute partly substitute flax material.To get the hydrogen peroxide boiling-bleaching process,firstly uses hydrogen as the major boiling and bleaching agent,explores the boiling-bleaching process of flax rove.And uses hydrogen as major degumming agent, explores the optimal technique of jute.Combines the boiling-bleaching technique of flax and jute,researches and educes the optimal boiling-bleaching process of flax and jute blended rove.First,according to the single-factor experiment,the issue mainly discusses the factors such as the main chemical reagent consumption,temperature,time to the influence of the boiling-bleaching effect.Then base on the single-factor experiment, chooses the proper level of factor,the paper adopts orthogonal method,compares the results such as fiber tensile strength,tensibility,white content,splitting and so on,and optimizes the best technology.Comprehensively analyses the affect on the results,and obtains the optimal process.Then validated test proves the optimal process is reliable.The paper explores the boiling-bleaching process of jute,according to the single-factor experiment,determines the range of every factor.After that,the paper adopts orthogonal experiment method,obtains the optimal process,and validated test proves the optimal process is reliable.Refers to the boiling-bleaching process parameter of flax and jute,basically determines the range of the parameter of boiling-bleaching process of flax and jute blended rove.The paper adopts orthogonal experiment method,obtains the optimal process,and validated test proves the optimal process is reliable.The optimal process from the experiment is:NaOH4%,H₂O₂(availability)6%,Na₂CO₃2%,Na₂SiO₃4%, JFC2%,CO(NH₂)₂2%,temperature80℃,80min.The spinning ability of flax and jute blended rove by the optimal process is:tensile strength 6.06cN/dtex,tensile elongation 4.17%,splitting 826Nm,residual gum content 8.14%,white content 52.3%.Contrasts the fiber performance of flax and jute blended rove by the optimal boiling-bleaching process with the blended fiber that flax and jute fiber firstly degummed with their each optimal process and then blended,and obtains the technology process adapted to the flax and jute blended yarn.