Method for utilizing straw and waste paper pulp to prepare high strength corrugated base paper

A technology for corrugated base paper and waste paper pulp, which is applied in textiles and papermaking, pulping with organic compounds, pulping with halogen compounds, etc. Conducive to energy saving and consumption reduction, the effect of low energy consumption

Active Publication Date: 2018-04-06
山东科迈生物制浆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of the enhancer is relatively complicated, which has a certain impact on the production cost economy and has certain application limitations.

Method used

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  • Method for utilizing straw and waste paper pulp to prepare high strength corrugated base paper
  • Method for utilizing straw and waste paper pulp to prepare high strength corrugated base paper
  • Method for utilizing straw and waste paper pulp to prepare high strength corrugated base paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] High-strength corrugated base paper was prepared from corn stalks and waste paper pulp. After the corn stalks are dried in the sun, remove the husks to separate the straw, crush the straw and pass through a 20-mesh sieve, immerse the straw powder in 1% NaOH solution until the material concentration is 1%, soak it at 20°C for 4 hours, and then wash it with water until medium. Add water to obtain straw pulp until the mass concentration of straw is 2%, add peracetic acid until the concentration is 3%, stir at 25°C for 3 hours, the speed of the stirring rotor is 200 rpm, and wash until neutral , to obtain the treated straw pulp, mix straw pulp and waste paper pulp, until the mass fraction of straw pulp in the mixed pulp is 10%, use the mixed pulp to prepare corrugated base paper with a weight of 130g / m2, and use it under the same conditions Compared with the corrugated base paper made from pure waste paper pulp, under normal temperature and pressure, the tensile strength of...

Embodiment 2

[0042] High-strength corrugated base paper was prepared from corn stalks and waste paper pulp. After the corn stalks are air-dried, remove the husks to separate the straw, pass the crushed straw through a 20-mesh sieve, immerse the straw powder in 5% KOH solution until the material concentration is 1.5%, and soak at 35°C for 6 hours. Then wash with water until neutral, add water until the mass concentration of straw is 1%, add peracetic acid until its concentration is 2%, shake and treat at 35°C for 6 hours, and the rotating speed is 100rpm, wash until neutral, and obtain the treated Straw pulp, mix straw pulp and waste paper pulp, until the mass fraction of straw in the mixed pulp is 20%, use the mixed pulp to make corrugated base paper with a weight of 150g / m2, and make it with pure waste paper pulp under the same conditions Compared with corrugated base paper, under normal temperature and pressure, the tensile strength of the paper increased by 87%, and the ring compressive...

Embodiment 3

[0044] High-strength corrugated base paper was prepared from corn stalks and waste paper pulp. After the corn stalks are dried in the sun, remove the husks and separate the pith, crush the pith and pass through a 20-mesh sieve, then immerse the straw pith powder in a mixed solution with a mass concentration of 3% of NaOH and KOH until the material concentration is 2.5%. Soak at 45°C for 2 hours, wash the straw with water to neutral, add water until the mass concentration of the straw is 2.5%, add hydrochloric acid solution to adjust the pH value of the straw pulp to below 2, then add chlorine dioxide, until the straw pulp The mass concentration of chlorine dioxide in the medium is 6%, stirred at 60°C for 15 hours, the speed of the stirring rotor is 20rpm, washed to neutral, and the treated straw pulp is obtained, and the straw pulp and waste paper pulp are mixed until mixed The mass fraction of straw in the pulp is 30%, and the corrugated base paper with a weight of 160g / m2 is...

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Abstract

The invention discloses a method for utilizing straw and waste paper pulp to prepare high strength corrugated base paper, and relates to the field of utilizing cellulose to make paper. After the strawis dried, straw husk is removed to separate out straw medulla, the straw medulla is pulverized, the straw medulla powder is mixed with a NaOH and/or KOH solution of which the mass concentration is 1-10% till the mass concentration of the material is 0.5-5%, after being soaked, the material is washed to be neutral, and water is added to obtain straw medulla pulp, wherein the concentration of the straw medulla is 0.5-5%; then peroxyacetic acid is added into the straw medulla pulp till the mass concentration of peroxyacetic acid is 1-8%, or a hydrochloric acid solution is added into the straw medulla pulp to adjust the pH value of the straw medulla pulp to be 2 or below, then chlorine dioxide is added till the mass concentration of chlorine dioxide in the straw medulla pulp is 1-8%; then thestraw medulla pulp is stirred or oscillated, after being washed to be neutral, the straw medulla pulp is mixed with the waste paper pulp, the mass percentage of the straw medulla in mixed paper pulpis 10-30%, and the mixed paper pulp is utilized to make the corrugated base paper.

Description

technical field [0001] The invention discloses a method for preparing high-strength corrugated base paper, which relates to the field of papermaking by utilizing cellulose, in particular to a method for preparing high-strength corrugated base paper by using straw and waste paper pulp. Background technique [0002] my country is a large agricultural country, and the output of straw can reach as much as 100 million tons per year. In addition to being used as a living energy in rural areas, most of this huge resource is discarded or burned on the spot, and only a small part is used as feed or biogas. . Straw is composed of straw, straw and leaves. The main components of straw are cellulose and lignin; straw contains a large amount of hemicellulose, starch and a small amount of protein; straw leaves mainly contain crude protein, crude fats and carbohydrates. [0003] At present, my country's papermaking raw materials mainly include wood, non-wood and waste paper. According to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H15/10D21H11/12D21H11/14D21C1/06D21C3/00D21C3/18
CPCD21C1/06D21C3/003D21C3/18D21H11/12D21H11/14D21H15/10
Inventor 刘玉张建华王东姜海强陈洪雷吴芹
Owner 山东科迈生物制浆有限公司
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