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Starch adhesive as well as preparation method and application thereof

An adhesive, starch-based technology, applied in the directions of starch-derived adhesives, applications, adhesive types, etc., can solve the problems of prolonged drying time of adhesives, harmful to human body, and insufficient bonding speed.

Pending Publication Date: 2022-06-17
北京纳威光合科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional starch glue cannot meet the requirements of high-speed cigarette machines due to insufficient bonding speed, low bonding strength, and long drying time.
Current research technology has two methods to improve the deficiencies of starch glue: 1) Starch is degraded into glucose (such as sucrose, malt syrup, glucose syrup, etc.) Chemical modification (oxidation, esterification, etherification, etc.) to prepare starch glue, but insufficient oxidation / degradation process will greatly reduce the bonding performance of starch glue; Toxic and harmful substances will be released during the combustion process; (2) The modified starch is mixed with synthetic polymers to prepare cigarette glue, but a large number of chemical synthetic polymers are used in this process, usually polyvinyl alcohol (PVA), which is flammable and irritating, harmful to the human body after inhalation; at the same time, the high content of polyvinyl alcohol will prolong the drying time of the adhesive itself, which cannot meet the requirements of high-speed cigarette machines

Method used

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  • Starch adhesive as well as preparation method and application thereof
  • Starch adhesive as well as preparation method and application thereof
  • Starch adhesive as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] In view of the problem that the safety and bonding strength of the adhesive for cigarette packaging in the prior art cannot be taken into account at the same time, the present application provides a starch adhesive, which obtains a high viscosity adhesive through the introduction of raw materials and the adjustment of the preparation method. High knot strength and safe and environmentally friendly starch-based adhesive. Specifically, the embodiment of the present invention discloses a starch adhesive, which is prepared from the following raw materials by weight:

[0029]

[0030]

[0031] In the present application, the starch is a starch well known to those skilled in the art, which can be specifically selected from corn starch, millet starch, wheat starch, barley starch, sorghum starch, potato starch, tapioca starch, sweet potato starch, mung bean starch, pea starch One or more of starch, plantain starch, sago starch and waxy starch. The silane coupling agent c...

Embodiment 1

[0058] The present embodiment provides a novel starch adhesive and a preparation method thereof;

[0059] Wherein, the raw materials for the preparation of the novel starch adhesive, based on the total mass of 100 parts, include the following components: 4 parts of γ-aminopropyl triethoxysilane, 0.8 parts of cellulose nanocrystals, 15 parts of corn starch, 0.2 parts of sodium trimetaphosphate, 5 parts of functional additives and 75 parts of water;

[0060] The preparation method is as follows:

[0061] (1) The modification process of the silane coupling agent-modified cellulose nanocrystals includes the following steps:

[0062] (1) Mix the absolute ethanol and deionized water according to the volume ratio of 1:18, and then add the acetic acid solution dropwise to adjust the pH value to 3 to 4;

[0063] (2) Mix 4 parts of γ-aminopropyltriethoxysilane and the solution obtained in step (1) at a volume ratio of 1:19, and hydrolyze the solution in a water bath at 60° C. until th...

Embodiment 2

[0072] The present embodiment provides a novel starch adhesive and a preparation method thereof;

[0073] Wherein, the raw materials for the preparation of the novel starch adhesive, based on the total mass of 100 parts, include the following components: 5 parts of γ-aminopropyl triethoxysilane, 1 part of cellulose nanocrystals, 20 parts of corn starch, 0.2 parts of sodium trimetaphosphate, 5 parts of functional additives and 68.8 parts of water.

[0074] The preparation method is as follows:

[0075] (1) The modification process of the silane coupling agent-modified cellulose nanocrystals includes the following steps:

[0076] (1) Mix the absolute ethanol and deionized water according to the volume ratio of 1:18, and then add the acetic acid solution dropwise to adjust the pH value to 3 to 4;

[0077] (2) mixing 5 parts of γ-aminopropyltriethoxysilane and the solution obtained in step (1) by volume at a ratio of 1:19, and hydrolyzing under 60° C. water bath conditions until...

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Abstract

The invention provides a starchy adhesive. The starchy adhesive is prepared from the following raw materials in parts by weight: 3 to 5 parts of silane coupling agent, 0.5 to 1 part of cellulose nanocrystal, 10 to 20 parts of starch, 0.1 to 0.5 part of sodium trimetaphosphate, 3 to 5 parts of functional additive and 65 to 85 parts of water. The invention also provides a preparation method of the starchy adhesive. The starchy adhesive provided by the invention has various properties meeting cigarette adhesive indexes, does not involve synthetic macromolecules, does not generate toxic substances in the combustion process, and has the characteristics of high bonding capacity, corrosion resistance, low cost, no toxicity, no harm, simple process and the like.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a starch adhesive, a preparation method and application thereof. Background technique [0002] The issue of green environmental protection and tobacco safety has become an increasing concern in today's international tobacco industry, and smoking and health issues have become a research hotspot today. At present, the tobacco industry has developed two relatively mature and effective methods for reducing coke and harm: one is to enhance the filtration of toxic and harmful substances in the cigarette itself, such as increasing the length of the filter tip, reducing the amount of cut tobacco, blending expanded cut tobacco and tobacco sheets , the application of ventilation dilution technology, etc.; the other is to adsorb or convert toxic and harmful substances into other low-toxic or non-toxic substances by adding adsorbents or catalysts in cigarette cut tobacco or cigarette filte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/10C09J11/04C09J11/08A24D3/06A24C5/00
CPCC09J103/10C09J11/04C09J11/08A24D3/06A24C5/00C08K2003/324C08L1/04C08K3/32
Inventor 赵梦莞唐彪吴行才吕嘉冬
Owner 北京纳威光合科技有限公司