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Hemp fiber degumming boiling-off additive, preparing method and application thereof

A hemp fiber and auxiliary technology, applied in the field of degumming scouring auxiliary and its preparation, can solve the problems of unsatisfactory lignin removal effect, high residual glue rate, low fiber production rate, etc.

Inactive Publication Date: 2009-10-07
TAIYUAN UNIV OF TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a hemp (i.e. hemp) fiber degumming scouring aid and a preparation method thereof, and applies it to the chemical degumming process to solve the low fiber production rate in the existing hemp chemical degumming process, Long degumming time; more sodium hydroxide is used, the residual glue rate is still high, the lignin removal effect is not ideal, more polluted wastewater is discharged, and the strength, whiteness and softness are lower

Method used

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  • Hemp fiber degumming boiling-off additive, preparing method and application thereof
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  • Hemp fiber degumming boiling-off additive, preparing method and application thereof

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Effect test

Embodiment approach 1

[0054] (1) A hemp fiber degumming scouring auxiliary, which is composed of two independent parts of auxiliary agent I and auxiliary agent II. Its composition and concentration are as follows:

[0055] In auxiliary agent I: the concentration of sodium hydroxide NaOH is 8-12kg / m 3 , the concentration of N-ethylpyrrolidone NEP-100 is 1-3kg / m 3 , the concentration of alkylphenol polyoxyethylene ether TX-10 is 6-10kg / m 3 , the concentration of sodium dodecylbenzenesulfonate LAS is 3-5kg / m 3 , the concentration of lauryl phosphate MA24P is 1-3kg / m 3 , the concentration of dispersing solubilizer S is 7-9kg / m 3 , the concentration of softener HA-FS70 is 40-60kg / m 3 ;

[0056] Auxiliary II: hydrogen peroxide H 2 o 2 The concentration is 8-12kg / m 3 , magnesium sulfate MgSO 4 The concentration is 3-4kg / m 3 , sodium silicate Na 2 SiO 3 The concentration is 0.1-0.3kg / m 3 , Sodium Sulfide Na 2 S concentration is 1-3kg / m 3 , sodium tripolyphosphate Na 5 P 3 o 10 The concen...

specific Embodiment approach

[0066] (3) A kind of preparation method of hemp fiber degumming scouring auxiliary agent The practical application method of prepared auxiliary agent I and auxiliary agent II in the chemical degumming of hemp raw hemp is different from the traditional chemical degumming method, and its main feature is to divide Step by step join method. The specific implementation is as follows:

[0067] The present invention adopts the traditional chemical degumming process, that is, the second boiling method, and the process is: pickling of raw hemp ~ water washing ~ primary scouring ~ water washing ~ secondary scouring ~ beating hemp ~ pickling ~ water washing ~ oiling ~ deoiling ~ drying dry / air dry, the difference is:

[0068] In a scouring process, the raw hemp fiber after pickling and washing is placed in a container containing 8kg / m 3 In the mixed solution of sodium hydroxide NaOH and auxiliary agent II, the concentration of its hemp fiber in the solution is 25kg / m 3 , the volume co...

Embodiment approach 2

[0071] Compared with Embodiment 1, the practical application difference of the auxiliary agent, the preparation method of the auxiliary agent and the auxiliary agent prepared by the preparation method of the auxiliary agent in the chemical degumming of hemp raw hemp in the embodiment 2 is:

[0072] (1) In the compounding of auxiliary agent I, the volume concentration of each reagent adopted is respectively 12kg / m 3 Sodium hydroxide NaOH, 3kg / m 3 N-ethylpyrrolidone NEP-100, 10kg / m 3 Alkylphenol polyoxyethylene ether TX-10, 5kg / m 3 Sodium dodecylbenzenesulfonate LAS, 3kg / m 3 Lauryl Phosphate MA24P, 9kg / m 3 The dispersion solubilizer S and 60kg / m 3 The non-yellowing anionic softener HA-FS70, the stirring speed is 100r / min, and the stirring time is 20min.

[0073] (2) In the compounding of auxiliary agent II, the volume concentration of each reagent used is respectively 12kg / m 3 Hydrogen peroxide H 2 o 2 、4kg / m 3 Magnesium Sulfate MgSO 4 、0.3kg / m 3 Sodium silicate Na 2...

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Abstract

The present invention discloses a hemp fiber degumming boiling-off additive, a preparing method and the application thereof. The invention is characterized in that the additive is composed of two parts of organic surfactant and inorganic boiling-off additive. The additive I and the additive II are prepared through compounding the organic surfactant and inorganic boiling-off additive. Furthermore the additive I and the additive II are applied for the chemical degumming of raw hemp ramie. When the additive I and the additive II according to the invention are applied to the industrial process of chemical boiling-off degumming, not only are the xylogen content and residual adhesive rate reduced, but also the degumming effect is increased. Furthermore the boiling-off time is shortened. The dosage of NaOH and the discharge amount of polluted wastewater are reduced. Additionally, the adding of the additive according to the invention increases the whiteness and plasticity of degummed ramie. The hemp fiber degumming boiling-off additive has excellent application value.

Description

technical field [0001] The invention relates to a degumming and scouring aid for hemp (ie hemp) fiber and its preparation method and application, in particular to a degumming and scouring aid used in a chemical degumming process, a preparation method thereof and the use of the aid in chemical degumming. Application in degumming process. Background technique [0002] The degumming method of existing hemp (being hemp) fiber is a lot, mainly is based on chemical degumming on the industry, and chemical degumming mainly adopts sodium hydroxide as scouring agent, simply adopts this scouring agent degumming not only time is long, the hydrogenation The amount of sodium is large, and the degumming effect is not ideal. More importantly, the discharge of polluted wastewater is large, which does not meet the requirements of energy saving and emission reduction. Therefore, many researchers are devoted to the development of scouring aids, but these scouring aids are mainly used in the de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01C1/02
Inventor 许并社李德茂戴晋明魏丽乔王仲信罗玉成延保太吴晓柳
Owner TAIYUAN UNIV OF TECH
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