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A kind of preparation method of fully biodegradable stone paper

A stone paper, all-biological technology, applied in the field of polymer materials, can solve problems such as environmental pollution and refractory degradation, and achieve the effects of good writing performance, smooth surface and excellent paper performance.

Active Publication Date: 2016-01-13
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the stone paper currently on the market mainly uses polyethylene as the resin matrix, which is difficult to degrade in the natural environment and brings new environmental pollution.

Method used

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  • A kind of preparation method of fully biodegradable stone paper
  • A kind of preparation method of fully biodegradable stone paper
  • A kind of preparation method of fully biodegradable stone paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh each component according to the following mass percentages: 70% of light calcium carbonate with a particle diameter of 100 nanometers, 15% of polybutylene succinate, 3% of vinyl triethoxysilane coupling agent, 5% of titanium dioxide %, compatibilizer (PBS-g-GMA) 4%, polyvinyl alcohol 3%;

[0025] The light calcium carbonate, polybutylene succinate, titanium dioxide, compatibilizer and polyvinyl alcohol are fully dried under vacuum, so that the moisture content thereof is lower than 0.2 wt%.

[0026] The vinyl triethoxysilane coupling agent is fully mixed with the light calcium carbonate, so that the surface of the light calcium carbonate is fully wetted by the coupling agent, and the light calcium carbonate modified by the coupling agent is obtained.

[0027] Add dry polybutylene succinate, titanium dioxide, compatibilizer and polyvinyl alcohol to the light calcium carbonate modified by the coupling agent, and stir at high speed to mix evenly. Then it is extruded...

Embodiment 2

[0030] Weigh each component by the following mass percentages: 35% of light calcium carbonate with a particle diameter of 10 microns, 30% of heavy calcium carbonate with a particle diameter of 10 microns, 22% of polybutylene succinate, vinyl tri(β -Methylethoxy) silane coupling agent 3%, titanium dioxide 4%, lithopone 1%, compatibilizer (PBS-g-GMA) 3%, polyvinyl alcohol 2%;

[0031] And light calcium carbonate, heavy calcium carbonate, polybutylene succinate, titanium dioxide, lithopone, compatibilizer, polyvinyl alcohol are fully dried under vacuum, so that the moisture content thereof is lower than 0.2wt% .

[0032] Fully mix vinyl tris(β-methylethoxy)silane coupling agent with light calcium carbonate and heavy calcium carbonate so that the coupling agent can fully wet the surface of calcium carbonate to obtain coupling agent-modified light Calcium carbonate and ground calcium carbonate mixture.

[0033] Add dry polybutylene succinate, titanium dioxide, lithopone, compatib...

Embodiment 3

[0036] Weigh each component according to the following mass percentages: 40% of light calcium carbonate with a particle diameter of 80 microns, 40% of diatomite with a particle diameter of 80 microns, 12% of polybutylene succinate, γ-propylene methacrylate Ester-based (trimethoxy) silane coupling agent 1%, iron red 4%, compatibilizer (PBS-g-MAH) 1%, polyvinyl alcohol 2%;

[0037] And light calcium carbonate, diatomaceous earth, polybutylene succinate, iron red, compatibilizer and polyvinyl alcohol are fully dried under vacuum, so that the moisture content therein is lower than 0.2wt%.

[0038] Fully mix the γ-propylmethacrylate-based (trimethoxy) silane coupling agent with light calcium carbonate and diatomaceous earth so that the coupling agent fully wets the surface of light calcium carbonate and diatomite to obtain a coupling A mixture of light calcium carbonate and diatomaceous earth modified by a joint agent.

[0039] Add dry polybutylene succinate, iron red, compatibili...

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Abstract

The invention relates to a preparation method of full-biodegradable rich mineral paper. The full-biodegradable rich mineral paper is prepared from the following raw materials in percentage by mass: 65-80% of inorganic mineral powder, 12-22% of biodegradable resin (polybutylene succinate), 1-4% of coupling agent, 1-8% of pigment, 1-5% of compatibilizer and 2-5% of polyvinyl alcohol. The preparation method comprises the concrete steps of treating the sufficiently-dried inorganic mineral powder by using the coupling agent, and then, uniformly mixing the sufficiently-dried inorganic mineral powder with polybutylene succinate, pigment, compatibilizer and polyvinyl alcohol under the action of stirring; then, plasticizing, extruding, calendaring and cooling to obtain the full-biodegradable rich mineral paper. The preparation method has the following advantages: (1) the adopted organic compounds are all biodegradable materials; (2) the preparation method is simple, environment-friendly and free of waste gas, waste water and waste residues; (3) the prepared paper is smooth in surface, non-transparent, uniform in thickness and good in writing performance.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a preparation method of completely biodegradable stone paper. Background technique [0002] With the rapid development of the national economy, the demand for paper continues to increase. The raw material of traditional papermaking is wood pulp made from trees, and the papermaking industry consumes a lot of valuable forest resources, water resources and energy. In particular, a large amount of waste water, waste gas and waste residue produced in the papermaking process have caused serious pollution to the environment. Under the background of global energy conservation and emission reduction and emphasis on the ecological environment, stone paper is gradually being valued. However, the stone paper currently on the market mainly uses polyethylene as the resin matrix, which is difficult to degrade in the natural environment and brings new environmental pollution. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L29/04C08L51/08C08K13/06C08K9/06C08K9/04C08K3/26C08K3/34B29C69/02
Inventor 解孝林熊丽端周兴平吴俊薛志刚
Owner HUAZHONG UNIV OF SCI & TECH
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