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High-strength environment-friendly paper and preparation method and application thereof

A green, environmentally friendly, high-strength technology, applied in paper, papermaking, packaging paper, etc., can solve problems such as affecting the biocompatibility of bamboo fibers, and achieve the effect of improving bonding performance and strength

Active Publication Date: 2018-02-13
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the smooth surface of PLA fiber and the hydrophobic polymer, it affects its biocompatibility with hydrophilic bamboo fiber.

Method used

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  • High-strength environment-friendly paper and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method for high-strength green environmental protection paper, comprising the following steps:

[0028] (1) the bamboo pulp raw material that 300g pulp is thick is 10% is placed in the beating of PFI mill, obtains the bamboo pulp that beating degree is 30 ° of SR;

[0029] (2) take by weighing the bamboo pulp that obtains in a certain amount of step (1) and add concentration and be in the cationic guar gum solution of 0.5wt%, the absolute dry mass of bamboo pulp is the 6wt% of cationic guar gum solution quality, at 25 ℃ Under conditions, after insulation 20min, take out bamboo pulp, wash 3 times with the distilled water of 3000ml, obtain the bamboo pulp after the pretreatment used in the experiment;

[0030] (3) the bamboo pulp after the pretreatment in step (2) and the PLA fiber that the cationic guar gum solution is not processed are on the paper machine according to 80g / m with the absolute dry mass ratio of 7:3 2 Quantitative papermaking can be done to...

Embodiment 2

[0032] A preparation method for high-strength green environmental protection paper, comprising the following steps:

[0033] (1) the bamboo pulp raw material that 300g pulp concentration is 10% is placed in the beating of PFI mill, obtains the bamboo pulp that beating degree is 40 ° of SR;

[0034] (2) take by weighing the bamboo pulp that obtains in a certain amount of step (1) and add concentration and be in the cationic guar gum solution of 1wt%, the absolute dry mass of bamboo pulp is the 8wt% of cationic guar gum solution quality, at 30 DEG C of conditions Next, after being kept warm for 25min, take out the bamboo pulp, wash 3 times with the distilled water of 3000ml, obtain the bamboo pulp after the pretreatment used in the experiment;

[0035] (3) the bamboo pulp after the pretreatment in step (2) and the PLA fiber that the cationic guar gum solution is not processed are on the paper machine according to 100g / m with the absolute dry mass ratio of 7:3 2 Quantitative pap...

Embodiment 3

[0037] A preparation method for high-strength green environmental protection paper, comprising the following steps:

[0038] (1) the bamboo pulp raw material that 300g pulp is thick is 10% is placed in the beating of PFI mill, obtains the bamboo pulp that beating degree is 50 ° of SR;

[0039] (2) take by weighing the bamboo pulp that obtains in a certain amount of step (1) and add concentration and be in the cationic guar gum solution of 1.5wt%, the absolute dry mass of bamboo pulp is the 10wt% of cationic guar gum solution quality, at 35 ℃ Under the condition, after being incubated for 30min, take out the bamboo pulp, wash 3 times with the distilled water of 3000ml, obtain the bamboo pulp after the pretreatment used in the experiment;

[0040] (3) with the bamboo pulp after the pretreatment in step (2) and the PLA fiber that the cationic guar gum solution is not processed with the absolute dry mass ratio of 7:3, on paper machine according to 120g / m 2 Quantitative papermakin...

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Abstract

The invention discloses high-strength environment-friendly paper and a preparation method and application thereof. The preparation method of the high-strength environment-friendly paper comprises thefollowing steps: beating a bamboo pulp raw material to obtain SR bamboo pulp with the beating degree of 30-50 degrees; then pretreating the bamboo pulp or PLA fiber in a cationic guar gum solution; making paper from the pretreated bamboo pulp and the untreated PLA fiber, or the untreated bamboo pulp and the pretreated PLA fiber according to an absolute dry mass ratio of 7:3 to obtain the high-strength environment-friendly paper. According to the preparation method, through pretreatment in the cationic guar gum solution, the fiber strength of the bamboo fiber, the chemical polarity on the surface of the PLA fiber and the interfacial compatibility between fibers are improved, and ultimately, the physical properties of the paper are significantly improved. All used materials are environmentally friendly, and the obtained paper has relatively high strength and can be well applied to various fields of daily paper, food packaging paper and the like.

Description

technical field [0001] The invention belongs to the technical field of special paper preparation, and in particular relates to a high-strength green environmental protection paper and its preparation method and application. Background technique [0002] Polylactic acid (PLA) fiber is a commonly used degradable material. It has good biocompatibility, gloss, transparency and thermal stability, and its application is more and more extensive. If the traditional papermaking method is adopted, PLA fibers are directly used to produce high-strength materials, which has a great cost advantage. However, since PLA fibers cannot form hydrogen bonds like plant fibers, the bonding force between PLA fibers cannot meet the requirements of papermaking, so it is not possible to use only PLA fibers to make paper. Plant fiber is the most abundant renewable and environmentally friendly material in nature, and it is cheap and has very good biodegradability. If the bamboo fiber with superior per...

Claims

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Application Information

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IPC IPC(8): D21H27/10D21H17/32D21H13/24
CPCD21H13/24D21H17/32D21H27/10
Inventor 杨飞马红燕冯郁成汤吕桥
Owner SOUTH CHINA UNIV OF TECH
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