CN104119816A - Preparation method for high-strength water-resistant starch adhesive for corrugated paperboards - Google Patents
Preparation method for high-strength water-resistant starch adhesive for corrugated paperboards Download PDFInfo
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- CN104119816A CN104119816A CN201310141744.0A CN201310141744A CN104119816A CN 104119816 A CN104119816 A CN 104119816A CN 201310141744 A CN201310141744 A CN 201310141744A CN 104119816 A CN104119816 A CN 104119816A
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- urea
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- starch
- formaldehyde resin
- starch adhesive
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Abstract
A provided preparation method for a high-strength water-resistant starch adhesive for corrugated paperboards comprises the following steps: 1) preparation of modified starch; 2) preparation of urea-formaldehyde resin; and 3) compounding of modified starch and urea-formaldehyde resin. By adding urea-formaldehyde resin into modified starch glue, dimethylolurea and oligomers in resin and hydroxyl in starch molecules are subjected to crosslinking reaction, aldehyde group in starch and hydroxyl in resin form hemiacetal and acetal structures, and a crosslinking structure participated by starch chains is formed through reaction. Because urea-formaldehyde resin and modified starch mutual react and form a net structure, penetration of starch glue into paper is avoided, initial viscosity and water resistance of starch glue are improved, and drying time is shortened.
Description
Technical field
the present invention relates to the preparation method of starch adhesive for a kind of high-strength water-resistance corrugated cardboard, belong to printing technology.
Background technology
Corrugated cardboard is mainly used amylan during fabrication, but amylan water content is up to 60%-70%, causes its rate of drying slow.Moisture wherein can permeate again when dry in paper, and initial bonding strength is declined.Also cause carton initial stage water content high, often cause run limit, collapse stupefied, connect the phenomenons such as cutter while cutting.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, the preparation method of a kind of high-strength water-resistance corrugated cardboard with starch adhesive is provided.
The preparation method of starch adhesive for high-strength water-resistance corrugated cardboard of the present invention, comprises the steps:
1) modified starch adhesive preparation: a certain amount of water is added in reactor, stir and add starch to make it to mix, be warming up to 60 ℃, add again hydroperoxidation, then add hypo solution, after stirring, hydro-oxidation sodium solution, finally add borax and P V A solution, then continue to stir, be cooled to 40 ℃ with bottom discharge;
2) urea-formaldehyde resin preparation: formaldehyde is added in the reactor that is added with end water and stirred, be heated to 90 ℃, with hexamethylenetetramine, the PH value of solution is adjusted to approximately 7. 5, add P V A particle, fully stirring and dissolving, reacts, then urea is added in reactor, after reaction for some time, with the solution of sodium hydroxide, p H value is adjusted to 7. 0 discharging;
3) modified starch adhesive and urea-formaldehyde resin is composite: by step 2) urea-formaldehyde resin made adds in the modified starch adhesive that step 1) makes, and stirs, mix.
The poor water resistance of amylan water resisting property research amylan for corrugated cardboard, major cause has two: the one, on its main chain with too many hydrophilic radical-OH, the 2nd, after its moulding, fail to form effective cross-linked network.Therefore improving its water tolerance mainly starts with from this two aspect exactly.
Amylan after modification of the present invention adds urea-formaldehyde resin, hydroxyl in dimethylolurea in resin and oligopolymer and starch molecule carries out crosslinking reaction, aldehyde radical in starch can with resin in hydroxyl form hemiacetal and ethylidene ether structure, reaction forms has the crosslinking structure that starch chain participates in.Due to urea-formaldehyde resin and the treated starch formation reticulated structure that reacts to each other, stoped amylan to permeate in paper, improved the tack of amylan, water tolerance, has shortened time of drying.
Embodiment
Embodiment 1
High-strength water-resistance corrugated cardboard starch adhesive, its preparation method is as follows:
1) modified starch adhesive preparation: a certain amount of water is added in reactor, stir and add starch to make it to mix, be warming up to 60 ℃, add again hydroperoxidation, then add hypo solution, after stirring, hydro-oxidation sodium solution, finally add borax and P V A solution, then continue to stir, be cooled to 40 ℃ with bottom discharge;
2) urea-formaldehyde resin preparation: formaldehyde is added in the reactor that is added with end water and stirred, be heated to 90 ℃, with hexamethylenetetramine, the PH value of solution is adjusted to approximately 7. 5, add P V A particle, fully stirring and dissolving, reacts, then urea is added in reactor, after reaction for some time, with the solution of sodium hydroxide, p H value is adjusted to 7. 0 discharging;
3) modified starch adhesive and urea-formaldehyde resin is composite: by step 2) urea-formaldehyde resin made adds in the modified starch adhesive that step 1) makes, and stirs, mix.
Claims (1)
1. the preparation method of starch adhesive for high-strength water-resistance corrugated cardboard, is characterized in that, comprises the steps:
1) modified starch adhesive preparation: a certain amount of water is added in reactor, stir and add starch to make it to mix, be warming up to 60 ℃, add again hydroperoxidation, then add hypo solution, after stirring, hydro-oxidation sodium solution, finally add borax and P V A solution, then continue to stir, be cooled to 40 ℃ with bottom discharge;
2) urea-formaldehyde resin preparation: formaldehyde is added in the reactor that is added with end water and stirred, be heated to 90 ℃, with hexamethylenetetramine, the PH value of solution is adjusted to approximately 7. 5, add P V A particle, fully stirring and dissolving, reacts, then urea is added in reactor, after reaction for some time, with the solution of sodium hydroxide, p H value is adjusted to 7. 0 discharging;
3) modified starch adhesive and urea-formaldehyde resin is composite: by step 2) urea-formaldehyde resin made adds in the modified starch adhesive that step 1) makes, and stirs, mix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310141744.0A CN104119816A (en) | 2013-04-23 | 2013-04-23 | Preparation method for high-strength water-resistant starch adhesive for corrugated paperboards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310141744.0A CN104119816A (en) | 2013-04-23 | 2013-04-23 | Preparation method for high-strength water-resistant starch adhesive for corrugated paperboards |
Publications (1)
| Publication Number | Publication Date |
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| CN104119816A true CN104119816A (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310141744.0A Pending CN104119816A (en) | 2013-04-23 | 2013-04-23 | Preparation method for high-strength water-resistant starch adhesive for corrugated paperboards |
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| CN (1) | CN104119816A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105368343A (en) * | 2015-11-18 | 2016-03-02 | 广德县常丰竹木业制品有限公司 | Water resistant modified starch-based wood adhesive and preparation method thereof |
| CN108084919A (en) * | 2016-11-21 | 2018-05-29 | 上海金桢纸业有限公司 | A kind of adhesive for corrugated paperboard and preparation method thereof |
| CN108084920A (en) * | 2016-11-21 | 2018-05-29 | 上海金桢纸业有限公司 | A kind of adhesive for corrugated paperboard and preparation method thereof |
| CN115340832A (en) * | 2022-08-19 | 2022-11-15 | 广州大学 | Preparation method and application of starch-based waterproof flame-retardant adhesive |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382597A (en) * | 2011-08-02 | 2012-03-21 | 张家港市鹿苑淀粉厂 | Starch adhesive for wall paper and preparation method thereof |
-
2013
- 2013-04-23 CN CN201310141744.0A patent/CN104119816A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382597A (en) * | 2011-08-02 | 2012-03-21 | 张家港市鹿苑淀粉厂 | Starch adhesive for wall paper and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 韩永生等: "瓦楞纸板用抗水淀粉胶配方及性能研究", 《包装工程》, vol. 23, no. 6, 31 December 2002 (2002-12-31), pages 41 - 43 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105368343A (en) * | 2015-11-18 | 2016-03-02 | 广德县常丰竹木业制品有限公司 | Water resistant modified starch-based wood adhesive and preparation method thereof |
| CN108084919A (en) * | 2016-11-21 | 2018-05-29 | 上海金桢纸业有限公司 | A kind of adhesive for corrugated paperboard and preparation method thereof |
| CN108084920A (en) * | 2016-11-21 | 2018-05-29 | 上海金桢纸业有限公司 | A kind of adhesive for corrugated paperboard and preparation method thereof |
| CN115340832A (en) * | 2022-08-19 | 2022-11-15 | 广州大学 | Preparation method and application of starch-based waterproof flame-retardant adhesive |
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Application publication date: 20141029 |