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A kind of preparation method of bamboo pulp

A technology of bamboo pulp and bamboo chips, which is applied in the direction of pulp bleaching, pulping with inorganic alkali, pulping of cellulose raw materials, etc., can solve the problems of poor spinnability, poor fiber strength, environmental pollution, etc., and achieve increased whiteness, Effect of improving strength and good decolorization effect

Active Publication Date: 2020-04-17
石超
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention: aiming at the poor spinnability of bamboo pulp at present, viscose spinning needs to be blended with cotton pulp, and the fiber strength of viscose is poor after spinning, and the problem of serious environmental pollution , the invention provides a kind of preparation method of bamboo pulp

Method used

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  • A kind of preparation method of bamboo pulp

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preparation example Construction

[0019] A kind of preparation method of bamboo pulp, this preparation method comprises the steps:

[0020] (1) Cut the bamboo into equilateral triangular pieces with a side length of 15-25mm, soak the bamboo pieces in 0.3mol / L sodium chloride solution, soak at 60-70°C for 2-4 hours, collect the soaked Bamboo slices;

[0021] (2) Put the soaked bamboo chips and ethanol solution into the container at a mass ratio of 1:3, pressurize the container to 1.2-1.6 MPa with nitrogen, keep the pressure for 10-15 minutes, and release the pressure to within 1-2 minutes. Standard atmospheric pressure, discharge, collect discharge mixture, filter, collect filter residue;

[0022] (3) Mix the filter residue and soybean meal powder evenly according to the mass ratio of 5-7:1, collect the mixture, and mix the mixture with 1.1mol / L sodium hydroxide solution and additives according to the mass ratio of 2-4:6:1 , put it into a cooking pot for cooking, set the temperature at 110-130°C, and cook for...

Embodiment 1

[0026] The choice of auxiliary agent is sodium bicarbonate.

[0027] The choice of additives is sodium sulfide.

[0028] A kind of preparation method of bamboo pulp, this preparation method comprises the steps:

[0029] (1) Cut the bamboo into equilateral triangular bamboo slices with a side length of 20mm, soak the bamboo slices in 0.3mol / L sodium chloride solution, soak at 65°C for 3h, and collect the soaked bamboo slices;

[0030] (2) Put the soaked bamboo chips and ethanol solution into the container at a mass ratio of 1:3, pressurize the container to 1.4MPa with nitrogen, keep the pressure for 1.3min, release the pressure to standard atmospheric pressure within 1.5min, and release material, collect the discharge mixture, filter, and collect the filter residue;

[0031] (3) According to the mass ratio of 6:1, mix the filter residue and soybean meal powder evenly, collect the mixture, according to the mass ratio of 36:1, mix the mixture with 1.1mol / L sodium hydroxide solu...

Embodiment 2

[0035] The choice of auxiliary agent is sodium bicarbonate.

[0036] The choice of additives is sodium hydrosulfide.

[0037] A kind of preparation method of bamboo pulp, this preparation method comprises the steps:

[0038] (1) Cut the bamboo into equilateral triangular bamboo slices with a side length of 25 mm, soak the bamboo slices in 0.3mol / L sodium chloride solution, soak at 70°C for 4 hours, and collect the soaked bamboo slices;

[0039] (2) Put the soaked bamboo chips and ethanol solution into the container at a mass ratio of 1:3, pressurize the container to 1.6MPa with nitrogen, keep the pressure for 15 minutes, release the pressure to standard atmospheric pressure within 2 minutes, and discharge the material. Collect the discharge mixture, filter, and collect the filter residue;

[0040] (3) According to the mass ratio of 7:1, mix the filter residue and soybean meal powder evenly, collect the mixture, according to the mass ratio of 4:6:1, mix the mixture with 1.1mo...

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Abstract

The invention belongs to the field of materials, and particularly relates to a preparation method of bamboo pulp. According to the preparation method, the bamboo chips are cut into equilateral triangles, so that a liquid can be more effectively and rapidly infiltrated into the interior of the bamboo chips, and a better treatment effect is achieved. According to the preparation method, a pretreatment is carried out under a high-pressure state; firstly, the inner structure of the bamboo chips fractures to form a pore structure, so that bamboo fibers are fluffy and are separated from lignin; an auxiliary agent is added during a cooking process, and impurities in bamboos are brought out by generated gas, so that the reaction capacity of pulp is improved; simultaneously formed carbonate radicals are supported inside pores to protect natural characteristics of the bamboo fibers from being damaged; soybean meal is added, natural strains are introduced, fermentation treatment is carried out, and colloid substances are formed and attached to the surfaces of the fibers, so that the spinnability of the bamboo pulp is increased; the introduced strain decomposes pigment, so that the whiteness is increased; and the permeability is increased by using an additive, so that a better decolorization effect is achieved. According to the preparation method provided by the invention, the steps of chlorination and the like are eliminated, so that pollution to the environmental is avoided.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a preparation method of bamboo pulp. Background technique [0002] Pulp is a type of high-purity cellulose pulp with high cleanliness obtained from plant fiber raw materials through a series of lignin and semi-fiber treatments. As the most abundant natural renewable resource in nature, cellulose is inseparable from human social activities all the time. Especially in today's highly developed modern science and technology, cellulose and its derivative materials can penetrate almost everywhere. All-encompassing, such as rayon and rayon for textiles, cellophane, cellulose esters, cellulose ethers and other materials that are widely used are all based on pulp refined from plant fiber raw materials. [0003] Bamboo is a monocotyledonous plant of the Poaceae Bamboo subfamily. There are about 39 genera and more than 500 species in China, with an area of ​​more than 5 million hectare...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21C3/02D21B1/02D21B1/36D21C3/22D21C9/10D21C9/16D21H11/12
CPCD21B1/021D21B1/36D21C3/02D21C3/22D21C9/1036D21C9/163D21H11/12
Inventor 刘蓉蓉刘芳尹凯欣
Owner 石超