CN102367641A - Aqueous surface reinforcing agent for corrugated paper - Google Patents
Aqueous surface reinforcing agent for corrugated paper Download PDFInfo
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- CN102367641A CN102367641A CN2011102991293A CN201110299129A CN102367641A CN 102367641 A CN102367641 A CN 102367641A CN 2011102991293 A CN2011102991293 A CN 2011102991293A CN 201110299129 A CN201110299129 A CN 201110299129A CN 102367641 A CN102367641 A CN 102367641A
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Abstract
The invention discloses an aqueous surface reinforcing agent for corrugated paper. A preparation method of the aqueous surface reinforcing agent for corrugated paper comprises the following steps of 1, adding starch and a cationic etherifying agent into a sodium hydroxide solution, stirring uniformly, and carrying out gelatinization to obtain a clarified cationic starch solution, 2, adding water and the clarified cationic starch solution into a container, adding an oxidizing agent into the container, and carrying out oxidation, 3, after the oxidation, heating to carry out gelatinization, 4, cooling the gelatinized products to a temperature of 70 DEG C, adding sodium bicarbonate and N-methylolacrylamide into the cooled gelatinized products, and then adding dropwisely a mixed solution of styrene, butyl acrylate and methyl methacrylate into the cooled gelatinized products with bicarbonate and N-methylolacrylamide, and 5, adding an initiator into the mixture obtained by the step 4 for an insulation reaction lasting for 2 hours, cooling, and adjusting a pH value to 7 by ammonia water to obtain the aqueous surface reinforcing agent for corrugated paper. The aqueous surface reinforcing agent for corrugated paper can form a network structure between molecules thereby improving paper intensity and cardboard intensity, and can form a compact membrane on a paper surface thereby effectively preventing water to permeate into a cardboard and improving cardboard physical properties.
Description
Technical field
The present invention relates to a kind of corrugated paper surface water-based reinforcing agent, specifically is a kind of nano SiO 2 modified starch graft copolymer corrugated paper surface water-based reinforcing agent.
Background technology
The fluting medium that present domestic carton industry adopts generally all is that straw pulp or waste paper are produced as raw material; Because the carton industry competition is fierce; Consideration from many factors such as costs; Market upper paper box cardboard enterprise uses C level fluting medium morely, but in fact a lot of fluting medium does not reach this standard.Therefore common fluting medium ubiquity is of poor quality, intensity is low, defective is many, causes in producing the corrugated board process, through regular meeting disconnected paper phenomenon taking place, and causes shutting down or product rejection, and body paper utilizes low, makes cost up, and the corrugated board quality reduces.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of water-based reinforcing agent that can in making the corrugated board process, strengthen corrugated board intensity.
Technical scheme of the present invention is: a kind of corrugated paper surface water-based reinforcing agent, adopt following sequential steps preparation and get:
(1) NaOH is added to the water is mixed with sodium hydroxide solution, starch and cationic etherifying agent are joined in the sodium hydroxide solution stir, at 80～100 ℃ of following gelatinizations 10～30 minutes, the cationic starch solution that obtains clarifying; Said NaOH: water: starch: the weight ratio of cationic etherifying agent is 1:15～25:40～60:1～5;
(2) in container, add entry and cationic starch solution by weight 10:1, warming while stirring to 45 ℃ adds oxidant and carries out oxidation; The quality percentage composition that the oxidant consumption accounts for system is 1%;
(3) be warming up to 90 ℃ after oxidation finishes and make oxidized starch begin gelatinization, continue gelatinization 30min;
(4) be cooled to 70 ℃, add sodium acid carbonate and N hydroxymethyl acrylamide, beginning drip styrene, butyl acrylate and methyl methacrylate mixed solution stir 30min; Wherein sodium acid carbonate, N hydroxymethyl acrylamide, styrene, butyl acrylate and the methyl methacrylate quality percentage composition that accounts for system is respectively 0.8%, 1.2%, 4.6%, 3.8%, 1.5%;
(5) add initator; Be warming up to 85 ℃, add nano silicon and stirred 1 hour, then insulation reaction 2 hours under this temperature; After insulation finishes; Naturally cool to room temperature, regulate the pH value to neutral, thereby make nano SiO 2 modified starch graft copolymer corrugated paper surface water-based reinforcing agent with ammoniacal liquor; Wherein initator, the nano silicon quality percentage composition that accounts for system is respectively 3%, 2%.
The cationic starch of step (1) can make and make the water-based reinforcing agent and have good equalization and viscosity stability, and its water retention property control emulsion makes coated paper have good printing performance to the infiltration of paper substrate.Preferably, in the step (1), dissolution of sodium hydroxide made sodium hydroxide solution in water after, starch is joined in the solution, stir 10min; Cationic etherifying agent is joined in the starch again and stir, gelatinization is 20 minutes under 90 ℃ temperature, the cationic starch solution that obtains clarifying.
Preferably, in the step (1), described cationic etherifying agent adopts 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride.
Preferably, in the step (1), NaOH: water: starch: the weight ratio=1:20:50:3 of cationic etherifying agent.
Preferably, in the step (2), described oxidant adopts potassium peroxydisulfate.
Preferably, in the step (5), described initator adopts ammonium persulfate.
In the preparation process of the present invention (4), sodium acid carbonate is used to regulate pH, and N hydroxymethyl acrylamide is as functional monomer.
When aqueous high molecular reinforcing agent emulsion of the present invention is used, be coated on the fluting medium surface, it brings into play its effect under uniform temperature and pressure, and a part of unsaturated group wherein produces the crosslinking curing effect with the cellulose in the body paper, becomes as a whole; Part is penetrated into the body paper fibrous inside, regulates the hygroscopic capacity of body paper, makes fluting medium self moisture reach balanced, thereby realizes preserving moisture, toughness reinforcing, the purpose that strengthens body paper intensity.The dried solid back of reinforcing agent self film forming sticks on the body paper tightly simultaneously, thereby improves tension, the ring crush intensity of fluting medium greatly.
With the method for corrugated paper of the present invention surface water-based reinforcing agent construction on corrugated board is diversified, as adopting the method for spraying or coating:
One, in the corrugated board production process, through nozzle a certain amount of reinforcing agent is sprayed on the fluting medium surface, the water-based reinforcing agent combines with cardboard in the corrugated board manufacture process;
Two, preprint machine glazing position at flexographic plate and increase an applicator roll; At surfaces coated one deck enhancement layer of facial tissue, after the drying tunnel part, facial tissue surface reinforcing agent solidifies back self film forming again; Stick on the body paper tightly, thereby improve tension, the ring crush intensity of fluting medium greatly.
The present invention compares with background technology, has following beneficial effect:
One, this water-based reinforcing agent is under uniform temperature and pressure condition, and a kind of network structure of intermolecular formation as at inner add " the molecule reinforcing bar " of paper, has improved the intensity of paper and cardboard;
Two, this water-based reinforcing agent can form fine and close film at paper surface, can effectively stop the infiltration of water to cardboard, improves the physical property of cardboard simultaneously;
Three, in the corrugated board production process, realize strengthening the effect of corrugated paper intensity through nozzle or applicator roll, do not need independent purchase of equipment.
The specific embodiment
Face the present invention down and do further detailed explanation, but be not restriction protection domain of the present invention.
Embodiment 1
A kind of corrugated paper surface water-based reinforcing agent, adopt following sequential steps preparation and get:
(1) dissolution of sodium hydroxide is made sodium hydroxide solution in water after, starch is joined in the solution, stir 10min; Cationic etherifying agent 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride is joined in the starch again and stir, gelatinization is 20 minutes under 90 ℃ temperature, the cationic starch solution that obtains clarifying; NaOH: water: starch: the weight ratio=1:20:50:3 of cationic etherifying agent;
(2) in container, add entry and cationic starch solution by weight 10:1, warming while stirring to 45 ℃ adds the oxidant potassium peroxydisulfate and carries out oxidation; The quality percentage composition that the oxidant consumption accounts for system is 1%;
(3) be warming up to 90 ℃ after oxidation finishes and make oxidized starch begin gelatinization, continue gelatinization 30min;
(4) be cooled to 70 ℃, add sodium acid carbonate and N hydroxymethyl acrylamide, beginning drip styrene, butyl acrylate and methyl methacrylate mixed solution stir 30min; Wherein sodium acid carbonate, N hydroxymethyl acrylamide, styrene, butyl acrylate and the methyl methacrylate quality percentage composition that accounts for system is respectively 0.8%, 1.2%, 4.6%, 3.8%, 1.5%;
(5) add initiator ammonium persulfate; Be warming up to 85 ℃, add nano silicon and stirred 1 hour, then insulation reaction 2 hours under this temperature; After insulation finishes; Naturally cool to room temperature, regulate the pH value to neutral, thereby make nano SiO 2 modified starch graft copolymer corrugated paper surface water-based reinforcing agent with ammoniacal liquor; Wherein initator, the nano silicon quality percentage composition that accounts for system is respectively 3%, 2%.
Embodiment 2
A kind of corrugated paper surface water-based reinforcing agent, adopt following sequential steps preparation and get:
(1) dissolution of sodium hydroxide is made sodium hydroxide solution in water after, starch is joined in the solution, stir 10min; Cationic etherifying agent 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride is joined in the starch again and stir, gelatinization is 20 minutes under 95 ℃ temperature, the cationic starch solution that obtains clarifying; NaOH: water: starch: the weight ratio=1:22:55:3 of cationic etherifying agent;
(2) in container, add entry and cationic starch solution by weight 10:1, warming while stirring to 45 ℃ adds the oxidant potassium peroxydisulfate and carries out oxidation; The quality percentage composition that the oxidant consumption accounts for system is 1%;
(3) be warming up to 90 ℃ after oxidation finishes and make oxidized starch begin gelatinization, continue gelatinization 30min;
(4) be cooled to 70 ℃, add sodium acid carbonate and N hydroxymethyl acrylamide, beginning drip styrene, butyl acrylate and methyl methacrylate mixed solution stir 30min; Wherein sodium acid carbonate, N hydroxymethyl acrylamide, styrene, butyl acrylate and the methyl methacrylate quality percentage composition that accounts for system is respectively 0.8%, 1.2%, 4.6%, 3.8%, 1.5%;
(5) add initiator ammonium persulfate; Be warming up to 85 ℃, add nano silicon and stirred 1 hour, then insulation reaction 2 hours under this temperature; After insulation finishes; Naturally cool to room temperature, regulate the pH value to neutral, thereby make nano SiO 2 modified starch graft copolymer corrugated paper surface water-based reinforcing agent with ammoniacal liquor; Wherein initator, the nano silicon quality percentage composition that accounts for system is respectively 3%, 2%.
Effect example 1
Water-based reinforcing agent of the present invention is coated to respectively on fluting medium and the boxboard, and each item physical property contrast before and after handling is like following table 1.
Physical property contrast before and after table 1 fluting medium and boxboard strengthen
Effect example 2
Water-based reinforcing agent of the present invention is coated on the triple wall board, and each item physical property contrast before and after handling is like following table 2.
Physical property contrast before and after table 2 triple wall board strengthens
Claims (6)
1. corrugated paper surface water-based reinforcing agent is characterized in that adopting following sequential steps preparation and gets:
(1) NaOH is added to the water is mixed with sodium hydroxide solution, starch and cationic etherifying agent are joined in the sodium hydroxide solution stir, at 80～100 ℃ of following gelatinizations 10～30 minutes, the cationic starch solution that obtains clarifying; Said NaOH: water: starch: the weight ratio of cationic etherifying agent is 1:15～25:40～60:1～5;
(2) in container, add entry and cationic starch solution by weight 10:1, warming while stirring to 45 ℃ adds oxidant and carries out oxidation; The quality percentage composition that the oxidant consumption accounts for system is 1%;
(3) be warming up to 90 ℃ after oxidation finishes and make oxidized starch begin gelatinization, continue gelatinization 30min;
(4) be cooled to 70 ℃, add sodium acid carbonate and N hydroxymethyl acrylamide, beginning drip styrene, butyl acrylate and methyl methacrylate mixed solution stir 30min; Wherein sodium acid carbonate, N hydroxymethyl acrylamide, styrene, butyl acrylate and the methyl methacrylate quality percentage composition that accounts for system is respectively 0.8%, 1.2%, 4.6%, 3.8%, 1.5%;
(5) add initator; Be warming up to 85 ℃, add nano silicon and stirred 1 hour, then insulation reaction 2 hours under this temperature; After insulation finishes; Naturally cool to room temperature, regulate the pH value to neutral, thereby make nano SiO 2 modified starch graft copolymer corrugated paper surface water-based reinforcing agent with ammoniacal liquor; Wherein initator, the nano silicon quality percentage composition that accounts for system is respectively 3%, 2%.
2. corrugated paper according to claim 1 surface water-based reinforcing agent is characterized in that: in the step (1), dissolution of sodium hydroxide made sodium hydroxide solution in water after, starch is joined in the solution, stir 10min; Cationic etherifying agent is joined in the starch again and stir, gelatinization is 20 minutes under 90 ℃ temperature, the cationic starch solution that obtains clarifying.
3. corrugated paper according to claim 1 surface water-based reinforcing agent is characterized in that: in the step (1),
Described cationic etherifying agent adopts 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride.
4. corrugated paper according to claim 1 surface water-based reinforcing agent is characterized in that: in the step (1), and NaOH: water: starch: the weight ratio=1:20:50:3 of cationic etherifying agent.
5. corrugated paper according to claim 1 surface water-based reinforcing agent, it is characterized in that: in the step (2), described oxidant adopts potassium peroxydisulfate.
6. corrugated paper according to claim 1 surface water-based reinforcing agent, it is characterized in that: in the step (5), described initator adopts ammonium persulfate.
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Cited By (10)
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| CN103015262A (en) * | 2012-12-27 | 2013-04-03 | 山东轻工业学院 | A kind of preparation method of nanometer TiO2 styrene-acrylic latex surface sizing agent |
| CN104762849A (en) * | 2015-03-17 | 2015-07-08 | 深圳市天天盛纸品有限公司 | High-strength waterproof corrugated paper board |
| CN105061676A (en) * | 2015-07-29 | 2015-11-18 | 封开县嘉诚纸业有限公司 | Composite modified starch for emulsification of surface sizing agent, preparation method and application thereof |
| CN105780604A (en) * | 2016-03-21 | 2016-07-20 | 南通市东方包装有限公司 | Production method of waterproof and damp-proof corrugated carton |
| CN109137609A (en) * | 2018-07-20 | 2019-01-04 | 蚌埠市奥特纸箱机械有限公司 | A method of improving corrugated paper ring Asia intensity |
| CN109235145A (en) * | 2018-08-31 | 2019-01-18 | 安徽省新兴纸业有限责任公司 | A kind of preparation method of the smooth mess-tin in surface |
| CN109594413A (en) * | 2018-11-26 | 2019-04-09 | 苏州恒康新材料有限公司 | It is a kind of for improving the paper making additive of paper tensile strength |
| CN111675985A (en) * | 2020-07-08 | 2020-09-18 | 东莞市全泰纸品有限公司 | Corrugated paper glue and preparation method thereof |
| CN113756128A (en) * | 2021-09-10 | 2021-12-07 | 福泉环保城发展有限公司 | Sizing agent for papermaking based on polymer graft modification phosphogypsum whisker reinforcement and preparation method thereof |
| CN117089210A (en) * | 2023-10-18 | 2023-11-21 | 广州市瑞合新材料科技有限公司 | Silicon rubber for medical protection and preparation method thereof |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015262A (en) * | 2012-12-27 | 2013-04-03 | 山东轻工业学院 | A kind of preparation method of nanometer TiO2 styrene-acrylic latex surface sizing agent |
| CN103015262B (en) * | 2012-12-27 | 2015-03-04 | 山东轻工业学院 | A kind of preparation method of nanometer TiO2 styrene-acrylic latex surface sizing agent |
| CN104762849A (en) * | 2015-03-17 | 2015-07-08 | 深圳市天天盛纸品有限公司 | High-strength waterproof corrugated paper board |
| CN105061676A (en) * | 2015-07-29 | 2015-11-18 | 封开县嘉诚纸业有限公司 | Composite modified starch for emulsification of surface sizing agent, preparation method and application thereof |
| CN105061676B (en) * | 2015-07-29 | 2016-06-29 | 封开县嘉诚纸业有限公司 | For the composite modified starch of emulsifying Cypres and preparation method and application |
| CN105780604A (en) * | 2016-03-21 | 2016-07-20 | 南通市东方包装有限公司 | Production method of waterproof and damp-proof corrugated carton |
| CN109137609A (en) * | 2018-07-20 | 2019-01-04 | 蚌埠市奥特纸箱机械有限公司 | A method of improving corrugated paper ring Asia intensity |
| CN109235145A (en) * | 2018-08-31 | 2019-01-18 | 安徽省新兴纸业有限责任公司 | A kind of preparation method of the smooth mess-tin in surface |
| CN109594413A (en) * | 2018-11-26 | 2019-04-09 | 苏州恒康新材料有限公司 | It is a kind of for improving the paper making additive of paper tensile strength |
| CN111675985A (en) * | 2020-07-08 | 2020-09-18 | 东莞市全泰纸品有限公司 | Corrugated paper glue and preparation method thereof |
| CN113756128A (en) * | 2021-09-10 | 2021-12-07 | 福泉环保城发展有限公司 | Sizing agent for papermaking based on polymer graft modification phosphogypsum whisker reinforcement and preparation method thereof |
| CN113756128B (en) * | 2021-09-10 | 2022-06-03 | 福泉环保城发展有限公司 | Sizing agent for papermaking based on polymer graft modification phosphogypsum whisker reinforcement and preparation method thereof |
| CN117089210A (en) * | 2023-10-18 | 2023-11-21 | 广州市瑞合新材料科技有限公司 | Silicon rubber for medical protection and preparation method thereof |
| CN117089210B (en) * | 2023-10-18 | 2024-02-09 | 广州市瑞合新材料科技有限公司 | Silicon rubber for medical protection and preparation method thereof |
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