CN101255613A - Production technique of special-shaped silk - Google Patents

Abstract

The invention relates to a manufacturing technique of anomalous silk, which is characterized in that firstly silk fiber and textile of the silk fiber is process preliminary treatment by using low temperature plasma and then processed to refine again by using refining agent, refining degumming is finished, white silk fibroin is gained via processing to dry in appropriate temperature and time, a solution of lithium bromide is dissolved according to a certain proportion, silk fibroin membranes are generated by applying an effective reaction technique, suitable technological conditions are chosen to process spinning, caliber of a cruciform spinneret is specially arranged to not only guarantee shaped degree in fiber and at the same time also to steady textile manufacturing. The invention has the advantages of shortening process flow, saving water resources, reducing emissions of pollutants, in favor of clean production and environmental protection.

Description

A kind of production technique of special-shaped silk

Technical field

The present invention relates to the technological method for processing of silk fiber and fabric thereof, particularly a kind of production technique of special-shaped silk.

Background technology

Silk fiber is mainly by being fibrous fibroin albumen and globular preteins silk gum two large divisions forms.In the manufacturing process of silk fiber,,, after taking-up is extracted, wash with water to remove the silk gum layer on silk surface at first with concise in the silk raw material immersion alkaline solution, dry under the room temperature, obtain white fibroin; Then with fibroin in stirring and dissolving under the room temperature lithium bromide water solution in, formation concentration is 10%～20% silk fibroin solution, through giving salt, make water white regenerated silk film after the drying, secondly N monomethyl morpholine oxide (NMMO) aqueous solution with regenerated silk film and inspissation adds common dissolving, stir at a certain temperature, make spinning solution, at last spinning solution is moved into spinning after vacuum defoamation.By cooling, be wound into silk fiber after the drying.

Summary of the invention

The objective of the invention is to overcome the deficiency of the existing technical existence of cocoon fibre manufacturing technique; provide a kind of technology simple; efficient energy-saving; the silk fiber production method that helps cleaner production and environmental protection; high performance moisture absorbing and sweat releasing silk fiber is produced in design and use by special-shaped spinning plate surface " ten " word abnormity; this fiber has light weight having kept original silk fiber; fluffy good springiness; superior characteristics such as feel is smooth; simultaneously because it has adopted criss-cross fibre section shaped design; capillary theory is successfully applied to the textile surface structure; it can be absorbed water fast; water delivery; diffusion and volatilization, thus keep the dry and comfortable of human body skin.Simultaneously,, when moisture state, can as the sponge fiber, not lodge yet,, reach the purpose that improves comfortableness so can keep micro climate state between fabric and skin all the time because silk fiber has higher wet yield modulus.

Technical scheme of the present invention is: a kind of production technique of special-shaped silk, it is characterized in that with low-temperature plasma silk fiber and fabric thereof being carried out pre-treatment earlier, carry out freshening with refining agent then, finishing refining comes unstuck, being equipped with suitable temperature and time carries out drying and makes white fibroin, dissolve according to a certain percentage with lithium-bromide solution, use the highly effective reaction technology and produce fibroin membrane, select suitable process conditions to carry out spinning, by to " ten " the pass specific arrangement of font spinnerets, spinneret orifice footpaths, length-width ratio, draw ratio, and the unique design of trench gap have been stablized spinning production again in the degree of profile in guaranteeing fiber.

The present invention program's technological progress effect is; shortened process; saved water resource; reduced the discharging of pollutant; the obvious advantage that helps cleaner production and environmental protection has been stablized the normal spinning of solution simultaneously, has lowered production cost; improve spinning production production capacity, increased added value of product.

The specific embodiment

Below in conjunction with concrete example the present invention is further described:

1. with concise in the silk raw material immersion alkaline solution, to remove the silk gum layer on silk surface.That is: the silk raw material is put into 0.3%～0.5% (percentage by weight) sodium carbonate liquor, stirred, boiled 30～60 minutes, take out, extract, so concise 1 time or concise repeatedly 2～4 times, take out at last, extract, wash with water, dry under the room temperature, obtain white fibroin; Wherein process implements to adopt the pre-treatment of plasma technology body, the working gas that adopts is the mist of argon gas, nitrogen, oxygen, airborne a kind of or above-mentioned gas: back of the body end vacuum is 1-6Pa, operating pressure is 10-120Pa, and discharge power is 10-250W, and the processing time is 1-20 minute.

N monomethyl morpholine oxide (NMMO) aqueous solution inspissation under reduced pressure, making its moisture is 12%～20%.

2. in above-mentioned 1 the fibroin of gained in stirring and dissolving under the room temperature in the lithium bromide water solution of 45%～60% (percentage by weight), forming concentration is the silk fibroin solution of 10%～20% (percentage by weight), add and filter after entry is diluted 3～10 times, then with the hollow-fibre membrane desalination of dialysing, obtain the regenerated silk aqueous solution, be placed in the container, at room temperature dry, make water white regenerated silk film.

3. N monomethyl morpholine oxide (NMMO) aqueous solution of institute's inspissation in the water white regenerated silk film and above-mentioned 1 of gained in above-mentioned 2 weight ratio with 10: 90～40: 60 is added in the common dissolution kettle, under 90～120 ℃, stirred material 4～5 hours through 80～120r/min rotating speed, this moment, fibroin dissolved fully, generate 10%-one 40% fibroin/NMMO aqueous solution, promptly obtain the spinning solution of brown transparent regenerated silk.

4. the spinning solution with the brown regenerated silk of gained in above-mentioned 3 moves into spinning machine after vacuum defoamation, is under 90～110 ℃ at spinning temperature, extrudes component pressure 100bar through spinnerets.

5, the spinneret orifice of spinnerets is that 12 hole concentric circles are arranged.

6, with solution in above-mentioned 4 by the assembly ejection after enter 80%～100% methanol aqueous solution coagulating bath solidification forming after the air cooling, after washing, be wound into tube with certain speed (600M), drying is made silk fiber.

Claims (3)

1, a kind of production technique of special-shaped silk, it is characterized in that with low-temperature plasma silk fiber and fabric thereof being carried out pre-treatment earlier, carry out freshening with refining agent then, finishing refining comes unstuck, be equipped with suitable temperature and time and carry out drying and make white fibroin, dissolve according to a certain percentage with lithium-bromide solution.

2, production technology as claimed in claim 1 is characterized in that the suitable technology bar of spinning selection, adopts the highly effective reaction technology to produce fibroin membrane.

3, production technology as claimed in claim 1 is characterized in that adopting the spinnerets of " ten " word pass specific arrangement.