CN109535319A - A kind of environmentally friendly drying strengthening agent and preparation method thereof - Google Patents
A kind of environmentally friendly drying strengthening agent and preparation method thereof Download PDFInfo
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- CN109535319A CN109535319A CN201811318549.XA CN201811318549A CN109535319A CN 109535319 A CN109535319 A CN 109535319A CN 201811318549 A CN201811318549 A CN 201811318549A CN 109535319 A CN109535319 A CN 109535319A
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- Prior art keywords
- strengthening agent
- drying strengthening
- environmentally friendly
- natural polymer
- reaction
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
- D21H17/44—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups cationic
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
Abstract
It is to replace the acrylamide monomers of 4-40wt% to be prepared with natural polymer or derivatives thereof in the reaction system for preparing polyacrylamide drying strengthening agent the invention discloses a kind of environmentally friendly drying strengthening agent.Preparation method includes the following steps: to mix in acrylamide monomers, complexing agent, natural polymer or derivatives thereof, water, and initiator is added and carries out polymerization reaction, obtains the environmentally friendly drying strengthening agent after reaction.The present invention is by natural polymer and its modified product, it is added in the reaction system of drying strengthening agent, group in these molecule fragments can generate very strong binding force with paper, so that have better compatibility between drying strengthening agent of the present invention and paper pulp fiber, the manufacture for paper improves the folding of paper, the resistance to broken, performances such as smoothly.And there is better biocompatibility and degradability, there is apparent advantage and broader practice prospect compared to traditional drying strengthening agent.
Description
Technical field
The present invention relates to papermaking dry-strengthening agent preparation field more particularly to a kind of environmentally friendly drying strengthening agent and its preparation sides
Method.
Background technique
Paper is that dosage is very big in people's life and work, and a kind of indispensable material.In the production process of paper usually
A variety of fillers, dyestuff, sizing agent and reinforcing agent etc. are added, wherein reinforcing agent mainly includes drying strengthening agent and wet strength agent.It is dry strong
Agent is mainly folding index, burst index, ring crush intensity, the internal bond strength, tensile strength for improving paper, and raising helps stream drainage
Performance.In the production of paper, drying strengthening agent is a kind of critically important additive.The polyacrylamide solution of certain molecular weight with
Its excellent performance becomes the primary article in this field.But the primary raw material acrylamide of current polyacrylamide drying strengthening agent
It is petroleum-based feedstock, petroleum has non-renewable, and pure polyacrylamide is also slow in the biodegradation rate of nature,
Therefore the substitute for seeking environment-friendly type, also just becomes current research hotspot partially or completely to substitute polyacrylamide.
Summary of the invention
The present invention is intended to provide the preparation method of a kind of environmentally friendly drying strengthening agent and the environmentally friendly drying strengthening agent,
To solve drawbacks described above existing for background technique.
The present invention realizes by the following technical solutions:
A kind of environmentally friendly drying strengthening agent is to use natural polymer in the reaction system for preparing polyacrylamide drying strengthening agent
Son or derivatives thereof replaces the acrylamide monomers of 4-40wt% to be prepared.
Preferably, described natural polymer or derivatives thereof is selected from glucose, fructose, maltose, soluble polysaccharide, malt
Dextrin, hydroxyethyl chitosan, carboxymethyl chitosan, carboxymethyl cellulose, starch and above-mentioned natural polymer modified product
At least one；More preferably maltose, maltodextrin or cationic modified starch.
Preferably, the acrylamide monomers be selected from acrylamide, Methacrylamide, N- isobutyl group acrylamide,
N tert butyl acrylamide, N phenyl acrylamide, acrylonitrile, acrylic acid, fumaric acid, itaconic acid, maleic anhydride, metering system
Nitrile, cation acrylamide class monomer and at least one of.More preferably acrylamide or Methacrylamide.
It is further preferred that the substitution amount of natural polymer or derivatives thereof is the 4- of acrylamide monomers dosage
10wt%.
The present invention also provides the preparation methods of above-mentioned environmentally friendly drying strengthening agent, include the following steps: acrylic amide
Monomer, complexing agent, natural polymer or derivatives thereof, water mixing, are added initiator and carry out polymerization reaction, obtain after reaction
The environmentally friendly drying strengthening agent.
The parts by weight of each component are as follows as a preferred technical solution:
The dosage of water is not particularly limited, and those skilled in the art should be able to be according to the dispersion mixing situation of each component, solution
The adequacy of polymerization and the solid content needs of final products are adjusted.Preferably, the dosage of water is 170-500 parts.
The complexing agent is selected from sodium ammonium triacetate (NTA), edetate (EDETATE SODIUM or four sodium), divinyl three
Amine pentacarboxylic acid salt (DTPA), tartaric acid, heptose hydrochlorate, sodium gluconate, sodium alginate, ethylenediamine tetraacetic methene sodium phosphate
(EDTMPS), diethylene triamine pentamethylene phosphonic salt (DETPMPS), the phosphatic at least one of three methene of amine.
The initiator is initiator commonly used in the art, such as ammonium persulfate, potassium peroxydisulfate, sodium peroxydisulfate, peroxidating
Hydrogen, tert-butyl hydroperoxide, cyclohexanone peroxide, benzoyl peroxide, SODIUM PERCARBONATE, potassium percarbonate etc..
Further, the polymerization reaction is carried out at 50-80 DEG C first, then reaction time 2-4h is warming up to 70- again
95 DEG C of the reaction was continued 0.5-3h.
As further preferred technical solution, the preparation method of the environmentally friendly drying strengthening agent includes the following steps:
By the natural polymer of complexing agent and the total dosage 40-70wt% of acrylamide monomers, Zhan of the total dosage 40-70wt% of Zhan or its
The water of the total dosage 40-70wt% of derivative, Zhan mixes, and the initiator that the total dosage 40-70wt% of Zhan is added carries out at 50-80 DEG C
Polymerization reaction, reaction time 2-4h；Then it is warming up to 70-95 DEG C again, by remaining acrylamide monomers, natural polymer
Or derivatives thereof, be slowly added dropwise in reaction system after initiator and water mixing, the reaction was continued 0.5-3h is obtained after reaction
The environmentally friendly drying strengthening agent.
The present invention is added to the reactant of drying strengthening agent by choosing natural polymer appropriate and its modification and catabolite
In system.System viscosity is reduced during the reaction, the controlling of reaction is more preferable, and molecular weight of product is suitable and is easier to control, point
Son amount distribution is narrower.The group in these molecule fragments can generate very strong binding force with paper simultaneously, so that such drying strengthening agent
There is better compatibility (containing carboxyl, hydroxyl, amino etc.) between paper pulp fiber, this just promotes such drying strengthening agent to have more
Good enhancing performance.Manufacture for paper improves the folding of paper, the resistance to performances such as broken, smooth.These additives belong to naturally
Macromolecule or derivatives thereof, the presence of these segments make such drying strengthening agent have better biocompatibility and degradability.
Therefore this is a kind of environmental-friendly high-performance drying strengthening agent.There is apparent advantage compared to traditional drying strengthening agent and broader answer
Use prospect.
Specific embodiment
The present invention is illustrated below by specific embodiment, but is not intended to limit the present invention.
Embodiment 1
By 2 parts of maltodextrin, 1 part of EDTA, 0.15 part of sodium peroxydisulfate, 15 parts of acrylamide, 100 parts of deionized waters add
Enter in reaction kettle, unlatching is uniformly mixed, and unlatching is heated to 75 DEG C, insulation reaction 2h, is warming up to 90 DEG C later, stirring
It is lower to instill by 1 portion of maltodextrin, 0.15 part of sodium peroxydisulfate, the mixed liquor that 15 parts of acrylamides and 80 parts of water are prepared into, when dropwise addition
Between control in 0.5h, continue insulation reaction 0.5h later, discharging obtains product through 200 mesh net filtrations after cooling.
Embodiment 2
By 2 parts of maltose, 1 part of EDTA, 0.2 part of ammonium persulfate, 20 parts of acrylamide, 100 parts of deionized waters additions
In reaction kettle, unlatching is uniformly mixed, and unlatching is heated to 75 DEG C, and insulation reaction 3h is warming up to 90 DEG C, under stirring later
It instills by 1 portion of maltodextrin, 0.2 part of ammonium persulfate, the mixed liquor that 15 parts of acrylamides and 90 parts of water are prepared into, time for adding control
System continues insulation reaction 0.5h in 0.5h later, and discharging obtains product through 200 mesh net filtrations after cooling.
Embodiment 3
By 1 part of cationic modified starch, 1 part of sodium alginate, 0.2 part of potassium peroxydisulfate, 30 parts of acrylamides, 160 parts are gone
Ionized water is added in reaction kettle, and unlatching is uniformly mixed, and unlatching is heated to 75 DEG C, and insulation reaction 2h is warming up to later
90 DEG C, stir what lower instillation was prepared by 1 part of cationic modified starch, 0.2 part of potassium peroxydisulfate, 15 parts of acrylamides and 85 parts of water
Mixed liquor, time for adding control continue insulation reaction 1h in 1h later, and discharging is produced through 200 mesh net filtrations after cooling
Product.
Embodiment 4
By 1 part of cationic modified starch, 1 part of EDTMPS, 0.2 part of potassium peroxydisulfate, 30 parts of Methacrylamides, 160 parts
Deionized water is added in reaction kettle, and unlatching is uniformly mixed, and unlatching is heated to 75 DEG C, and insulation reaction 2h heats up later
To 90 DEG C, lower instill by 1 part of cationic modified starch, 0.2 part of potassium peroxydisulfate, 15 parts of Methacrylamides and 85 parts of water systems is stirred
It is standby at mixed liquor, time for adding control continues insulation reaction 1h in 1h later, and discharging is obtained through 200 mesh net filtrations after cooling
To product.
Comparative example
By 1 part of EDTA, 0.15 part of sodium peroxydisulfate, 15 parts of acrylamide, 100 parts of deionized waters are added in reaction kettles, open
It opens and is uniformly mixed, unlatching is heated to 75 DEG C, insulation reaction 2h, is warming up to 90 DEG C later, stirs lower instill by 0.15
Part sodium peroxydisulfate, the mixed liquor that 15 parts of acrylamides and 80 parts of water are prepared into, time for adding control in 0.5h, continue to keep the temperature later
0.5h is reacted, discharging obtains product through 200 mesh net filtrations after cooling.
The basic index of each embodiment and comparative example is as shown in table 1:
1 product index of table
| Sample number into spectrum | Solid content/% | Viscosity/mPa.s | pH | Appearance |
| Embodiment 1 | 20.05 | 9300 | 3.88 | Pale yellow transparent thick liquid |
| Embodiment 2 | 20.13 | 11200 | 3.96 | Pale yellow transparent thick liquid |
| Embodiment 3 | 19.98 | 9800 | 3.89 | Pale yellow transparent thick liquid |
| Embodiment 4 | 20.13 | 10200 | 4.05 | Pale yellow transparent thick liquid |
| Comparative example | 20.05 | 10500 | 3.93 | Colorless and transparent thick liquid |
Note: viscosity, pH are 25 DEG C of measurements.
Application Example:
The drying strengthening agent of each embodiment and comparative example is taken to carry out following application experiment:
Drying strengthening agent is diluted with water spare to 1%, gets out paper pulp, the drying strengthening agent diluted is added into paper pulp, is added
Dosage 12kg/t.Paper pulp is stirred evenly, handsheet, every strength test is carried out after drying.The results are shown in Table 2:
Table 2 adds the handsheet pattern index of each drying strengthening agent sample
Seen by the Comparison study result with comparative example: use drying strengthening agent prepared by the present invention is 12kg/t in additive amount
When, ring crush intensity, bursting strength, the folding number of paper are significantly better than that contrast sample, and drying strengthening agent prepared by the present invention is to ring
Border is more friendly, it is seen that the present invention has apparent advantage compared to traditional drying strengthening agent.
The above shows and describes the basic principle, main features and advantages of the invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The scope of protection of present invention by appended claims and
Its equivalent thereof.
Claims (10)
1. a kind of environmentally friendly drying strengthening agent, which is characterized in that used in the reaction system for preparing polyacrylamide drying strengthening agent
Natural polymer or derivatives thereof replaces the acrylamide monomers of 4-40wt% to be prepared.
2. environmentally friendly drying strengthening agent as described in claim 1, which is characterized in that described natural polymer or derivatives thereof choosing
From glucose, fructose, maltose, soluble polysaccharide, maltodextrin, hydroxyethyl chitosan, carboxymethyl chitosan, carboxymethyl cellulose
At least one of the modified product of element, starch and above-mentioned substance.
3. environmentally friendly drying strengthening agent as claimed in claim 2, which is characterized in that described natural polymer or derivatives thereof choosing
From maltose, maltodextrin or cationic modified starch.
4. environmentally friendly drying strengthening agent as described in claim 1, which is characterized in that the acrylamide monomers are selected from propylene
Amide, Methacrylamide, N- isobutyl group acrylamide, N tert butyl acrylamide, N phenyl acrylamide, acrylonitrile, third
At least one of olefin(e) acid, fumaric acid, itaconic acid, maleic anhydride, methacrylonitrile, cation acrylamide class monomer.
5. environmentally friendly drying strengthening agent as described in claim 1, which is characterized in that described natural polymer or derivatives thereof
Substitution amount is the 4-10wt% of acrylamide monomers dosage.
6. the method for preparing any one of the claim 1-5 environmentally friendly drying strengthening agent, which is characterized in that including walking as follows
It is rapid: acrylamide monomers, complexing agent, natural polymer or derivatives thereof, water being mixed, initiator is added and polymerize instead
It answers, obtains the environmentally friendly drying strengthening agent after reaction.
7. method as claimed in claim 6, which is characterized in that the parts by weight of each component are as follows:
8. method as claimed in claim 6, which is characterized in that the complexing agent is selected from sodium ammonium triacetate, ethylenediamine tetra-acetic acid
Salt, diethylenetriamine pentacarboxylic acid salt, tartaric acid, heptose hydrochlorate, sodium gluconate, sodium alginate, ethylenediamine tetraacetic methene sodium phosphate,
Diethylene triamine pentamethylene phosphonic salt, the phosphatic at least one of three methene of amine.
9. method as claimed in claim 6, which is characterized in that the initiator is selected from ammonium persulfate, potassium peroxydisulfate, persulfuric acid
Sodium, hydrogen peroxide, tert-butyl hydroperoxide, cyclohexanone peroxide, benzoyl peroxide, SODIUM PERCARBONATE, potassium percarbonate at least one
Kind.
10. method as claim in any one of claims 6-9, which comprises the steps of: by complexing agent and Zhan Zongyong
Measure natural polymer of the total dosage 40-70wt% of acrylamide monomers, Zhan of 40-70wt% or derivatives thereof, the total dosage of Zhan
The water of 40-70wt% mixes, and the initiator that the total dosage 40-70wt% of Zhan is added carries out polymerization reaction at 50-80 DEG C, when reaction
Between be 2-4h；Then it is warming up to 70-95 DEG C again, by remaining acrylamide monomers, natural polymer or derivatives thereof, causes
It is slowly added dropwise in reaction system after agent and water mixing, the reaction was continued 0.5-3h is obtained described environmentally friendly after reaction
Drying strengthening agent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811318549.XA CN109535319A (en) | 2018-11-07 | 2018-11-07 | A kind of environmentally friendly drying strengthening agent and preparation method thereof |
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| CN201811318549.XA CN109535319A (en) | 2018-11-07 | 2018-11-07 | A kind of environmentally friendly drying strengthening agent and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111269357A (en) * | 2020-03-26 | 2020-06-12 | 爱森（中国）絮凝剂有限公司 | Micromolecule amphoteric polymer papermaking reinforcing agent and preparation method thereof |
| CN111410715A (en) * | 2020-04-08 | 2020-07-14 | 晋州市大成变性淀粉有限公司 | Solid dry strength agent |
| CN112551669A (en) * | 2020-12-02 | 2021-03-26 | 肇庆领誉环保实业有限公司 | Water treatment flocculant with high settling velocity and preparation method thereof |
| CN114263065A (en) * | 2021-12-27 | 2022-04-01 | 上海昶法新材料有限公司 | Interlayer reinforcing agent for papermaking, raw material composition thereof and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111269357A (en) * | 2020-03-26 | 2020-06-12 | 爱森（中国）絮凝剂有限公司 | Micromolecule amphoteric polymer papermaking reinforcing agent and preparation method thereof |
| CN111410715A (en) * | 2020-04-08 | 2020-07-14 | 晋州市大成变性淀粉有限公司 | Solid dry strength agent |
| CN112551669A (en) * | 2020-12-02 | 2021-03-26 | 肇庆领誉环保实业有限公司 | Water treatment flocculant with high settling velocity and preparation method thereof |
| CN114263065A (en) * | 2021-12-27 | 2022-04-01 | 上海昶法新材料有限公司 | Interlayer reinforcing agent for papermaking, raw material composition thereof and preparation method thereof |
| CN114263065B (en) * | 2021-12-27 | 2023-03-03 | 上海昶法新材料有限公司 | Interlayer reinforcing agent for papermaking, raw material composition thereof and preparation method thereof |
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Application publication date: 20190329 |