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Pineapple leaf fiber preparation method

A technology of pineapple leaf fiber and pineapple, which is applied in the directions of fiber processing, fiber mechanical separation, and chemical production of bast fiber, can solve the problems of thick fiber, difficult spinning, and long time, and achieves good dyeing performance and good physical machinery. Performance, effect of high cellulose content

Inactive Publication Date: 2008-11-19
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Existing chemical methods of processing pineapple leaf raw material take a long time
And the pineapple leaf fiber that prepares is because its fineness is 314 public branches, breaking strength 3.96cN / dtex and softness are 50 twists / 25cm, cause its fiber thick, hard, so when spinning exceeds more than 10 British branches, due to the The breaking strength of the yarn is not enough, and the phenomenon of severe end breakage often occurs, so it is difficult to spin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1, first remove the thorns on the edge of the pineapple leaf, and then scrape off the mesophyll jelly of the pineapple leaf by mechanical tapping to obtain the pineapple leaf fiber raw material.

[0023] Step 2, put the pineapple leaf fiber raw material obtained by step 1 into a sulfuric acid solution pot with a concentration of 0.5g / L, and process the pineapple leaf fiber raw material at a temperature of 50°C for 2 hours, the weight ratio of the pineapple leaf fiber raw material to sulfuric acid solution It is 1:15.

[0024] Step 3, washing the pineapple leaf fiber raw material obtained in step 2, so that its pH value reaches 6.8-7.2.

[0025] Step 4, add the sodium hydroxide solution that is 15: 1 with the weight ratio of pineapple leaf fiber raw material in boiling pot, the concentration of described sodium hydroxide solution is 8g / L, take pineapple leaf fiber raw material weight as 100% Meter, also add 3% sodium tripolyphosphate, 6% water glass, 8% hydrogen pe...

Embodiment 2

[0030] Step 1, first remove the thorns on the edge of the pineapple leaf, and then scrape off the mesophyll jelly of the pineapple leaf by mechanical tapping to obtain the pineapple leaf fiber raw material.

[0031] Step 2, put the pineapple leaf fiber raw material obtained by step 1 into a sulfuric acid solution pot with a concentration of 1.5g / L, and process the pineapple leaf fiber raw material for 1.5 hours at a temperature of 30°C. The weight ratio of the pineapple leaf fiber raw material to sulfuric acid solution It is 1:12.

[0032] Step 3, washing the pineapple leaf fiber raw material obtained in step 2, so that its pH value reaches 6.8-7.2.

[0033] Step 4, add the sodium hydroxide solution that is 12:1 with the weight ratio of pineapple leaf fiber raw material in boiling pot, the concentration of described sodium hydroxide solution is 12g / L, take pineapple leaf fiber raw material weight as 100% Calculate, also add 1.5% sodium tripolyphosphate, 4% water glass, 4% hyd...

Embodiment 3

[0038] Step 1, first remove the thorns on the edge of the pineapple leaf, and then scrape off the mesophyll jelly of the pineapple leaf by mechanical tapping to obtain the pineapple leaf fiber raw material.

[0039] Step 2, the pineapple leaf fiber raw material obtained by step 1 is put into the sulfuric acid solution pot of 2g / L by the concentration, and the pineapple leaf fiber raw material was processed for 2 hours at a temperature of 60° C., and the weight ratio of the pineapple leaf fiber raw material and sulfuric acid solution was 1:12.

[0040] Step 3, washing the pineapple leaf fiber raw material obtained in step 2, so that its pH value reaches 6.8-7.2.

[0041] Step 4, add the sodium hydroxide solution that is 12:1 with the weight ratio of pineapple leaf fiber raw material in boiling pot, the concentration of described sodium hydroxide solution is 14g / L, take pineapple leaf fiber raw material weight as 100% Calculate, also add 1.5% sodium tripolyphosphate, 4% water g...

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Abstract

The invention provides a method for preparing arghan, which comprises the following steps that: pineapple leaves are subject to mechanical treatment, acid preimpregnation, washing, basic boiling, alkali cooking, washing, dehydration, loosing and oiling. The method has the advantages that: the provided arghan has high cellulose content, and other compositions such as hemicellulose, lignin and pectin have lower content, so the arghan provided by the method has good physical and mechanical properties, the fiber length of the arghan can reaches between 3 and 38cm, the fiber fineness reaches between 1000 and 5000 metric counts, the strength is between 5 and 6.8cN / dtex, and the softness reaches between 65 and 85 twirl / 25cm. In addition, the arghan provided by the method has good dyeing property as well as anti-ultraviolet performance and sound wave resistant performance.

Description

technical field [0001] The invention relates to a preparation method and application of pineapple leaf fiber. Background technique [0002] Pineapple, a perennial herb, originates from Brazil in South America and is one of the three famous fruits in tropical regions. my country's main production areas are in Guangdong, Guangxi, Hainan, Yunnan, Fujian, Taiwan and other places. The vein fibers of the pineapple are wrapped in colloid (that is, the pineapple leaf fiber). This fiber can be made into clothes, ropes, sutures, silk, paper and other products. It can be said that the pineapple has utilization value and is very important economic crops. [0003] Pineapple leaf fiber (also known as pineapple hemp in my country) is taken from the leaves of the pineapple plant. Like sisal and other fibers, it belongs to the vein fiber. The chemical composition of pineapple leaf fiber is similar to that of flax and jute, but the cellulose content is low, and the content of hemicellulose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01C1/02D01B1/10D01F11/02
Inventor 郁崇文傅佳佳吴苏明喻华张元明
Owner DONGHUA UNIV
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