CN105568761A - Tearing strength reinforcing agent for papermaking and preparation method of tearing strength reinforcing agent - Google Patents
Tearing strength reinforcing agent for papermaking and preparation method of tearing strength reinforcing agent Download PDFInfo
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- CN105568761A CN105568761A CN201410553303.6A CN201410553303A CN105568761A CN 105568761 A CN105568761 A CN 105568761A CN 201410553303 A CN201410553303 A CN 201410553303A CN 105568761 A CN105568761 A CN 105568761A
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- reinforcing agent
- tearing toughness
- toughness reinforcing
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- tearing strength
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Abstract
The invention discloses a tearing strength reinforcing agent for papermaking and a preparation method of the tearing strength reinforcing agent. The method comprises the steps of mixing guar gum, galactomannan gum, cationic starch, polyvinyl alcohol, acetic acid, polyamideimide epichlorohydrin, methylene succinic acid (itaconic acid) and the like, and carrying out compounding, stirring and other steps so as to prepare the reinforcing agent. According to the tearing strength reinforcing agent prepared by adopting the method provided by the invention, the performance is greatly improved, the solid content is 14.5-16.5%, and the viscosity is 20-35 cps; the tearing strength reinforcing agent is added at the wet part, the tearing strength of paper can be greatly improved, and the paper is endowed with good wet strength and dry strength.
Description
Technical field
The present invention relates to a kind of intensity reinforcing agent, particularly relate to a kind of paper grade (stock) tearing toughness reinforcing agent and preparation method thereof.
Background technology
Paper for daily use occupies ratio greatly in daily necessities, and papermaking output huge in paper industry is that paper chemicals industry brings the corresponding good market space.In China's paper industry raw material, due to timber resource shortage, a large amount of paper making raw material mainly straw pulp, secondary stock used at present, these raw materials are because fiber is short, heteroproteose cell content is high, and the shortcomings such as water retention value is high, have a strong impact on the intensity of paper and cardboard.
Existing paper making additive, also exists that cost is high, energy consumption is large, production procedure is complicated, and improves the various poor-performings of paper, and how solving the problems existed in existing paper-making process, has been a urgent need to solve the problem in paper industry.The appearance of the problems such as increasingly serious resource restriction and environmental protection, and people are to the raising of paper product quality and quality requirements, impel the China paper industry active accommodation industrial structure, improve the green level of production.
Tearing toughness reinforcing agent is after mixing with plant slurry, and produce certain chemistry and physical bond effect between meeting and fabric slurry, these combinations can improve the various performance parameters of paper to a certain extent.In these parameters, the wet strength of paper and tearing toughness are important parameters, play key effect to the performance of paper.CN103924480A discloses a kind of formula and preparation method of functional paper grade (stock) reinforcing agent, and the reinforcing agent prepared by this technique enhances the intensity of paper but preparation technology is slightly aobvious complicated.Therefore the tearing toughness strengthening paper is still in paper industry needs perfect problem badly.
Summary of the invention
For solving the deficiency of tearing toughness reinforcing agent in paper production in prior art, the invention provides a kind of tearing toughness reinforcing agent and preparation method thereof.
First aspect of the present invention is to provide a kind of paper grade (stock) tearing toughness reinforcing agent, by weight, comprising:
Wherein, the CATION in described cationic starch is selected from one in quaternary ammonium salt or tertiary ammonium salt and combination thereof.
Wherein, the degree ofacationic substitution in described cationic starch is 0.03-0.04.
Wherein, the starch in described cationic starch is selected from one in cornstarch, farina, tapioca and combination thereof.
Wherein, thickener is selected from natural polymer and derivative thereof, as at least one in gelatin, sodium alginate, casein, guar gum, sesbania gum, chitosan, gum Arabic, xanthans, soybean protein glue, natural rubber, lanolin, agar, be preferably guar gum and sesbania gum.
Wherein, the described polyhydroxylated polymer that contains is preferably at least 1-8 hydroxyl/10 carbon atom, is more preferably 3-5 hydroxyl/10 carbon atom, is more preferably polyvinyl alcohol.
Wherein, described binary acid is preferably binary organic acid, is more preferably methylene-succinic acid (itaconic acid).
Wherein, described organic acid is selected from the carboxylic acid different from described binary acid, and is preferably one or more in monocarboxylic acid, is more preferably one or more in formic acid, acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, benzoic acid, is more preferably acetic acid.
Wherein, described wet strength agent is selected from polyamide-imide epoxychloropropane.
Wherein, described solvent is water, is preferably deionized water.
Second aspect of the present invention is to provide a kind of preparation method of paper grade (stock) tearing toughness reinforcing agent, supplies raw materials by following parts by weight, wherein,
Preparation process is as follows:
Step 1: in thickener, cationic starch, organic acid mixed solution, add containing polyhydroxylated polymer, binary acid, reaction;
Step 2: wet strength agent is joined in the reaction system in step 1, reaction, i.e. obtained tearing toughness reinforcing agent of the present invention.
Wherein, in step 1, reaction temperature is preferably 60-75 DEG C.
Wherein, in step 1, the reaction time is preferably 70-100 minute.
Wherein, in step 2, reaction temperature is 60-75 DEG C.
Wherein, reaction time 30-60 minute in step 2.
Wherein, the CATION in described cationic starch is selected from one in quaternary ammonium salt or tertiary ammonium salt and combination thereof.
Wherein, the degree ofacationic substitution in described cationic starch is 0.03-0.04.
Wherein, the starch in described cationic starch is selected from one in cornstarch, farina, tapioca and combination thereof.
Wherein, thickener is selected from natural polymer and derivative thereof, as at least one in gelatin, sodium alginate, casein, guar gum, sesbania gum, chitosan, gum Arabic, xanthans, soybean protein glue, natural rubber, lanolin, agar, be preferably guar gum and sesbania gum.
Wherein, the described polyhydroxylated polymer that contains is preferably at least 1-8 hydroxyl/10 carbon atom, is more preferably 3-5 hydroxyl/10 carbon atom, is more preferably polyvinyl alcohol.
Wherein, described binary acid is preferably binary organic acid, is more preferably methylene-succinic acid (itaconic acid).
Wherein, described organic acid is selected from the carboxylic acid different from described binary acid, and is preferably one or more in monocarboxylic acid, is more preferably one or more in formic acid, acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, benzoic acid, is more preferably acetic acid.
Wherein, described wet strength agent is selected from polyamide-imide epoxychloropropane.
Wherein, described solvent is water, is preferably deionized water.
Beneficial effect: tearing toughness reinforcing agent prepared by the inventive method, solid content is 14.5-16.5%, and viscosity is 20-35cps; Add for wet end, the tearing toughness of paper can be made greatly to increase, impart the good wet strength of paper and dry strength simultaneously.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in further detail.
Embodiment 1
A kind of preparation method of tearing toughness reinforcing agent, comprise the steps: that 250kg deionized water adds in reactor by (1), open and stir, add under stirring and get guar gum 6kg, sesbania gum 3kg, cationic starch 9kg, acetic acid 2kg, at room temperature stir 30 minutes; (2) room temperature is gone down polyvinyl alcohol 8kg, methylene-succinic acid 5kg.Both are mixed; (3), under stirring, add in (1) by (2), system is heated to 75 DEG C, and stirs 40 minutes in this temperature; (4) polyamide-imide epoxychloropropane (PAE) 10 parts is added in (3), at 75 DEG C, stir after 30 minutes, be cooled to room temperature, both must this tearing toughness reinforcing agent, its solid content is 14.67%, and viscosity is 23cps.
Embodiment 2
A kind of preparation method of tearing toughness reinforcing agent, comprise the steps: that 240kg deionized water adds in reactor by (1), open and stir, add under stirring and get guar gum 6kg, sesbania gum 5kg, cationic starch 9kg, acetic acid 3kg, at room temperature stir 30 minutes; (2) room temperature is gone down polyvinyl alcohol 10kg, methylene-succinic acid 6kg.Both are mixed; (3), under stirring, add in (1) by (2), system is heated to 60 DEG C, and stirs 60 minutes in this temperature; (4) polyamide-imide epoxychloropropane (PAE) 8 parts is added in (3), at 60 DEG C, stir after 60 minutes, be cooled to room temperature, both must this tearing toughness reinforcing agent, its solid content is 16.37%, and viscosity is 32cps.
Embodiment 3
A kind of preparation method of tearing toughness reinforcing agent, comprise the steps: that 230kg deionized water adds in reactor by (1), open and stir, add under stirring and get guar gum 6kg, sesbania gum 3kg, cationic starch 9kg, acetic acid 1kg, at room temperature stir 30 minutes; (2) room temperature is gone down polyvinyl alcohol 9kg, methylene-succinic acid 4kg.Both are mixed; (3), under stirring, add in (1) by (2), system is heated to 70 DEG C, and stirs 40 minutes in this temperature; (4) polyamide-imide epoxychloropropane (PAE) 9 parts is added in (3), at 70 DEG C, stir after 50 minutes, be cooled to room temperature, both must this tearing toughness reinforcing agent, its solid content is 15.19%, and viscosity is 27cps.
Carry out Performance comparision below in conjunction with sample obtained in example and contrast sample, method is as follows:
Be 3.0% by mass concentration, needle is starched: the slurry agitation of broad-leaved slurry=4:6 is even, in slurry, add the tearing toughness reinforcing agent of contrast sample and embodiment 1 to embodiment 3 respectively, addition is 0.5% of paper pulp oven-dry weight, stirs after adding, then handsheet is carried out, Substance is 50g/m2, and paper is 50 DEG C of dry post curings, and curing temperature is 105 DEG C, curing time is 30 minutes, is cooled to room temperature after slaking.
The dry tearing toughness of paper, wet tearing toughness, the results are shown in following table:
Wherein, the tearing toughness reinforcing agent that sample is commercially available routine is contrasted.
Result as can be seen from above-described embodiment and comparative sample: the paper through the tearing toughness reinforcing agent process of the present invention is wet/and dry tear index improves a lot, and enhances the performance of paper anti tear.
Be described in detail specific embodiments of the invention above, but it is just as example, the present invention is not restricted to specific embodiment described above.To those skilled in the art, any equivalent modifications that the present invention is carried out and substituting also all among category of the present invention.Therefore, equalization conversion done without departing from the spirit and scope of the invention and amendment, all should contain within the scope of the invention.
Claims (10)
1. a paper grade (stock) tearing toughness reinforcing agent, is characterized in that, comprises by weight:
2. tearing toughness reinforcing agent according to claim 1, is characterized in that, the substitution value of described cationic starch is 0.03-0.04.
3. tearing toughness reinforcing agent according to claim 1, is characterized in that, thickener is guar gum and sesbania gum.
4. tearing toughness reinforcing agent according to claim 1, is characterized in that, described binary acid is methylene-succinic acid (itaconic acid).
5. tearing toughness reinforcing agent according to claim 1, is characterized in that, described is polyvinyl alcohol containing polyhydroxylated polymer.
6. tearing toughness reinforcing agent according to claim 1, is characterized in that, described organic acid is acetic acid.
7. tearing toughness reinforcing agent according to claim 1, is characterized in that, described wet strength agent is selected from polyamide-imide epoxychloropropane.
8. a preparation method for paper grade (stock) tearing toughness reinforcing agent, supplies raw materials by following parts by weight, wherein,
Preparation process is as follows:
Step 1: in thickener, cationic starch, organic acid mixed solution, add containing polyhydroxylated polymer, binary acid, reaction;
Step 2: wet strength agent is joined in the reaction system in step 1, reaction, i.e. obtained tearing toughness reinforcing agent of the present invention.
9. method according to claim 8, is characterized in that, in above-mentioned steps 1, reaction condition is temperature 60-75 DEG C, time 70-100 minute.
10. method according to claim 8, is characterized in that, in above-mentioned steps 2, reaction condition is temperature 60-75 DEG C, time 30-60 minute.
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| CN201410553303.6A CN105568761A (en) | 2014-10-17 | 2014-10-17 | Tearing strength reinforcing agent for papermaking and preparation method of tearing strength reinforcing agent |
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| CN201410553303.6A CN105568761A (en) | 2014-10-17 | 2014-10-17 | Tearing strength reinforcing agent for papermaking and preparation method of tearing strength reinforcing agent |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106087564A (en) * | 2016-06-20 | 2016-11-09 | 广州聚注专利研发有限公司 | The preparation method of a kind of wet strength agent and wet strength agent |
| CN106638142A (en) * | 2016-12-09 | 2017-05-10 | 苏州艾博迈尔新材料有限公司 | Paper surface reinforcing agent and preparation method thereof |
| CN109487620A (en) * | 2018-12-05 | 2019-03-19 | 江门市高力依科技实业有限公司 | A kind of papermaking dry-strengthening agent and preparation method thereof |
| CN112876716A (en) * | 2021-01-20 | 2021-06-01 | 华南理工大学 | Method for rapidly preparing high-strength bacterial cellulose paper in large area |
| CN114016325A (en) * | 2021-10-18 | 2022-02-08 | 广东轻工职业技术学院 | Paper reinforcing agent and preparation method thereof, reinforced paper and preparation method thereof |
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| US6521088B1 (en) * | 1999-11-23 | 2003-02-18 | National Starch And Chemical Investment Holding Corporation | Degraded hydrophobic, particulate starches and their use in paper sizing |
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| CN101392162A (en) * | 2008-11-07 | 2009-03-25 | 李新桥 | Fast dry and cold setting starch strengthened glue and preparation method thereof |
| CN103866630A (en) * | 2014-02-25 | 2014-06-18 | 苏州恒康新材料有限公司 | Xanthan gum wet strength agent and preparation method thereof |
| CN103981760A (en) * | 2014-04-21 | 2014-08-13 | 苏州恒康新材料有限公司 | Modified polyamine epichlorohydrin wet strength agent and preparation method thereof |
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| US6521088B1 (en) * | 1999-11-23 | 2003-02-18 | National Starch And Chemical Investment Holding Corporation | Degraded hydrophobic, particulate starches and their use in paper sizing |
| CN101250837A (en) * | 2008-03-27 | 2008-08-27 | 上海东升新材料有限公司 | Intensifier for paper as well as preparation method and application thereof |
| CN101392162A (en) * | 2008-11-07 | 2009-03-25 | 李新桥 | Fast dry and cold setting starch strengthened glue and preparation method thereof |
| CN103866630A (en) * | 2014-02-25 | 2014-06-18 | 苏州恒康新材料有限公司 | Xanthan gum wet strength agent and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106087564A (en) * | 2016-06-20 | 2016-11-09 | 广州聚注专利研发有限公司 | The preparation method of a kind of wet strength agent and wet strength agent |
| CN106638142A (en) * | 2016-12-09 | 2017-05-10 | 苏州艾博迈尔新材料有限公司 | Paper surface reinforcing agent and preparation method thereof |
| CN109487620A (en) * | 2018-12-05 | 2019-03-19 | 江门市高力依科技实业有限公司 | A kind of papermaking dry-strengthening agent and preparation method thereof |
| CN112876716A (en) * | 2021-01-20 | 2021-06-01 | 华南理工大学 | Method for rapidly preparing high-strength bacterial cellulose paper in large area |
| CN112876716B (en) * | 2021-01-20 | 2022-01-18 | 华南理工大学 | Method for rapidly preparing high-strength bacterial cellulose paper in large area |
| CN114016325A (en) * | 2021-10-18 | 2022-02-08 | 广东轻工职业技术学院 | Paper reinforcing agent and preparation method thereof, reinforced paper and preparation method thereof |
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