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A kind of APMP fiber low-temperature plasma modification method

A low-temperature plasma and modification technology, used in pulp property modification, fiber raw material treatment, cellulose pulp post-treatment, etc., can solve the problems of high processing power, long processing time, insufficient economical efficiency, etc., and achieve improved strength. Effect

Active Publication Date: 2017-04-19
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the processing effect is better, the required processing power is high, the processing time is long, and it is not economical enough.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The raw material is air-dried to keep its moisture content constant to 90%. Need to be torn into small pieces of 5mm x 5mm to prevent sticking to each other in the plasma processing system. Put the torn small pieces in a sealed bag and store them in a refrigerator at 4°C for more than 24 hours. Turn on the low-temperature plasma surface treatment equipment and preheat it for 30 minutes, open the system sealed chamber, and place the torn small pieces of fiber in a petri dish between the upper and lower electrodes of the low-temperature plasma generator.

[0027] Will O 2 Gas cylinders, CO 2 The gas cylinder is connected with the low temperature plasma processing system. Set the vacuum degree to 800Pa, and carry out pumping treatment on the system. When the pressure in the warehouse reaches 800Pa, turn on the air valve and let O 2 and CO 2 , the flow rate ratio is 1:1(O 2 Scale first, O 2 The flow rate is 1.5L / min), so that the pressure in the chamber returns to n...

Embodiment 2

[0029]The raw material is air-dried to keep its moisture content constant to 90%. Need to be torn into small pieces of 5mm x 5mm to prevent sticking to each other in the plasma processing system. Put the torn small pieces in a sealed bag and store them in a refrigerator at 4°C for more than 24 hours. Turn on the low-temperature plasma surface treatment equipment and preheat it for 30 minutes, open the system sealed chamber, and place the torn small pieces of fiber in a petri dish between the upper and lower electrodes of the low-temperature plasma generator.

[0030] Will O 2 Gas cylinders, CO 2 The gas cylinder is connected with the low temperature plasma processing system. Set the vacuum degree to 800Pa, and carry out pumping treatment on the system. When the pressure in the warehouse reaches 800Pa, turn on the air valve and let O 2 and CO 2 , the ratio of the flow rate is 5:1(O 2 Scale first, O 2 The flow rate is 1.5L / min), so that the pressure in the chamber return...

Embodiment 3

[0032] The raw material is air-dried to keep its moisture content constant to 90%. Need to be torn into small pieces of 5mm x 5mm to prevent sticking to each other in the plasma processing system. Put the torn small pieces in a sealed bag and store them in a refrigerator at 4°C for more than 24 hours. Turn on the low-temperature plasma surface treatment equipment and preheat it for 30 minutes, open the system sealed chamber, and place the torn small pieces of fiber in a petri dish between the upper and lower electrodes of the low-temperature plasma generator.

[0033] Will O 2 Gas cylinders, CO 2 The gas cylinder is connected with the low temperature plasma processing system. Set the vacuum degree to 800Pa, and carry out pumping treatment on the system. When the pressure in the warehouse reaches 800Pa, turn on the air valve and let O 2 and CO 2 , the flow rate ratio is 10:1(O 2 Scale first, O 2 The flow rate is 1.5L / min), so that the pressure in the chamber returns to ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses an APMP fiber low-temperature plasma modification method. The method includes the steps that 1, pretreatment of a raw material is conducted, wherein the APMP raw material is air-dried and torn into pieces to be placed into a refrigerator for low temperature preservation and standby application; 2, plasma modification is carried out, wherein glow atmosphere low-temperature plasma surface treatment equipment is used as an operating platform, and the O2 / CO2 mixed atmosphere or the O2 / Ar mixed atmosphere or the O2 / N2 mixed atmosphere or the O2 / pure air mixed atmosphere is used as the modified treatment atmosphere. According to the method, too high power is not needed, the atmosphere selection and the atmosphere connecting-in proportion are diversified, and the method can be selected for use by being combined with the actual conditions. After modified APMP fibers are made into paper, the tensile strength is greatly improved, and the zero-span tensile strength and the zero-span wet tensile strength are also greatly improved.

Description

technical field [0001] The invention relates to a pulp modification method, in particular to a low-temperature plasma modification method for APMP fibers. [0002] technical background [0003] With the reduction of forest resources, the pulping of fast-growing broad-leaved wood, especially its high-yield pulp, has been paid more and more attention. The lignin content on the surface of APMP pulp is relatively high, and its surface is covered by a rigid intercellular layer and softened lignin. The performance of this surface determines that the flexibility of APMP pulp is low, and it also seriously affects the fiber interfiber. combination. Compared with chemical pulp, the biggest disadvantage of APMP pulp is that its strength is significantly lower than chemical pulp, so it cannot completely replace chemical pulp in the production of high-grade paper, which hinders the development of high-yield pulping methods to a certain extent. The use of domestic APMP slurry is relative...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21C9/00
CPCD21C9/002
Inventor 黄崇杏陈宜昭赵媛李翠翠
Owner GUANGXI UNIV
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