CN105568760A - Preparation method of paraffin and tall oil papermaking sizing agent - Google Patents
Preparation method of paraffin and tall oil papermaking sizing agent Download PDFInfo
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- CN105568760A CN105568760A CN201510952316.5A CN201510952316A CN105568760A CN 105568760 A CN105568760 A CN 105568760A CN 201510952316 A CN201510952316 A CN 201510952316A CN 105568760 A CN105568760 A CN 105568760A
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- 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
- D21H21/16—Sizing or water-repelling agents
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/18—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising waxes
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
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Abstract
The invention discloses a preparation method of a paraffin and tall oil papermaking sizing agent, belonging to the field of preparation of sizing agents. According to the invention, paraffin is adsorbed by talcum powder, the sizing property of a material is improved by virtue of the high hydrophobic character of the paraffin, and modified cheap tall oil used as a raw material is compounded with the talcum powder adsorbing the paraffin to obtain the product capable of replacing a traditional expensive sizing agent of alkyl ketene dimer and alkenyl succinic anhydride. According to the invention, the process is simple, the raw material is cheap, the cost is lowered, and the prepared paraffin and tall oil papermaking sizing agent has the characteristics of high drying speed and stable sizing effect, enables a formed film unlikely to be sticky, and is beneficial to industrial production.
Description
Technical field
The invention discloses a kind of preparation method of paraffin tall oil glue used in paper-making, belong to sizing agent preparation field.
Background technology
Be response sustainable development at present, plastics pollution, take waste paper as paper mould one of new lover becoming modern packaging gradually of raw material, but due to the defect of its raw material itself, goods also exist the problems such as rough surface, easily hair and powder dropping, products appearance is attractive in appearance not, is difficult to meet the packing instructions of most of package particularly high-grade, sophisticated product.Fall bits problem for paper, in production, the method for conventional top sizing is improved.
Top sizing is after article formation, product surface is carried out to a kind of method of applying glue.The method of operating of top sizing is simple, and sizing agent utilization rate is high, obviously can improve paper hair and powder dropping problem, optimizes paper products outward appearance, can also improve paper products surface strength simultaneously.The application of top sizing in paper products widely, is particularly reducing the wasting of resources in recent years, and under improving the overall situation of resource utilization, surface sizing techniques is developed rapidly.
At present conventional Cypres have natural polymer Cypres and in/alkaline sizing agent is reactive sizing agent; Wherein in natural polymer Cypres, starch and modifier thereof are the most frequently used carriers, and modified starch and the adhesion of fiber better, have some improvement to paper products hair and powder dropping, but dry rear rete embrittlement is easy to crack, are clamminess in the rear surface that makes moist; In addition/alkaline sizing agent is generally mainly alkyl ketene dimer (AKD) and alkenyl succinic anhydride (ASA), but these two kinds of sizing agent surfaces are not subject to glue, but there is the problems such as expensive, thermalization speed slow, paper sliding is large, sizing efficiency is unstable, be difficult in a short time generally apply in China.
Summary of the invention
The technical problem that the present invention mainly solves: though the problem of paper products hair and powder dropping can be improved for natural polymer Cypres conventional at present, but rete embrittlement easily splits after dry, wetted surfaces is easily glued, and in/alkaline sizing agent, though surface is not subject to glue, but exist expensive, thermalization speed is slow, paper sliding is large, the shortcoming of sizing efficiency instability, cause the present situation being difficult to generally apply, provide a kind of by talcum powder Adsorption Paraffin, utilize the high hydrophobic feature of paraffin to improve the sizing of material, the tall oil of recycling cheapness is raw material, through the modified a kind of obtained method that can replace traditional alkyl ketene dimer and alkenyl succinic anhydride high price sizing agent product composite with the talcum powder of Adsorption Paraffin.The method not only technique is simple, and cheaper starting materials, reduces cost, and obtained paraffin tall oil glue used in paper-making also has the feature that rate of drying is fast, sizing efficiency is stablized and formed rete is not easily clamminess, and is easy to suitability for industrialized production.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
(1) be that talcum powder joins in distilled water by 1:5 by solid-to-liquid ratio, 60 ~ 70 DEG C are heated to microwave applicator, be placed on magnetic stirrer, stir with the rotating speed of 200 ~ 300r/min, under stirring, add the paraffin of mixed liquor gross mass 30 ~ 40%, after insulated and stirred 2 ~ 3h, filter the talcum powder after obtaining Adsorption Paraffin;
(2) 100 ~ 200mL poly adipate succinic acid ester and 50 ~ 80mL hydroxypropyl dimethyl silicone polymer are joined in the 1L there-necked flask with agitator and thermometer, put into water-bath and be warming up to 90 ~ 100 DEG C, add 80 ~ 100mL aqueous polyurethane again, start agitator to stir with the rotating speed of 300 ~ 400r/min, refrigerator is put into after stirring terminates, at 4 ~ 6 DEG C, leave standstill 12 ~ 18h, obtain silane-modified aqueous polyurethane;
(3) get the silane-modified aqueous polyurethane of 200 ~ 300mL pours in 1L tool plug conical flask together with the talcum powder after 30 ~ 50g Adsorption Paraffin, add the maleic anhydride of the agent of 3 ~ 5g Catalyzed by p-Toluenesulfonic Acid and equimolar amounts simultaneously, oil bath is heated to 70 ~ 80 DEG C, insulation is until after maleic anhydride melts completely, continue to be warming up to 85 ~ 95 DEG C, reaction 2 ~ 3h, obtains mixed liquor;
(4) in the there-necked flask that agitator, nitrogen wireway and reflux are housed, 100 ~ 200mL mixed liquor obtained above is added, add 10 ~ 20mg polyacrylamide and 200 ~ 300mL deionized water again, start agitator and carry out stirring formation latex with the rotating speed of 500 ~ 600r/min;
(5) mass concentration adding latex gross mass 1 ~ 2% in above-mentioned latex is the solution of sodium bisulfite of 25% and the concentration of latex gross mass 0.5 ~ 1% is the ammonium persulfate solution of 0.02mol/L, nitrogen is passed into again in there-necked flask, it is 10 ~ 15mL/min that nitrogen passes into speed, obtains making emulsifying agent by oneself under the protection of nitrogen after being warming up to 85 ~ 95 DEG C of insulation reaction 3 ~ 4h;
(6) measure 300 ~ 400mL tall oil and put into pyroreaction still, be warming up to 150 ~ 200 DEG C of reaction 2 ~ 3h, until its complete melting, be that 1:2 joins in reactor by the volume ratio of above-mentioned self-control emulsifying agent and tall oil again, add 200 ~ 300mL distilled water again, when phase inversion trend appears in system, start agitator with the rotating speed rapid stirring 10 ~ 20min of 1000 ~ 1200r/min, obtain dispersion sizing agent;
(7) after stirring terminates, when question response still naturally cools to 40 ~ 50 DEG C, improve rotating speed to 1600 ~ 1800r/min, the aluminium polychloride of dispersion sizing agent gross mass 0.5 ~ 1% is added under stirring, discharging after continuation stirring reaction 30 ~ 40min, obtains a kind of paraffin tall oil glue used in paper-making.
Application process of the present invention is: during use, and paraffin tall oil glue used in paper-making uniform application the present invention obtained is surperficial at moulded paper pulp product, wherein every 1 ~ 2m
2moulded paper pulp product surface smear 25 ~ 35mL paraffin tall oil glue used in paper-making, arranging hot pressing reshaping temperature is afterwards 40 ~ 60 DEG C, and pressure is 100 ~ 180kPa, dry heat repoussage shape 3 ~ 5min.After using, the rough surface of moulded paper pulp product not only can be made obviously to reduce, rate of drying is fast, and crosses the paper mold of the paraffin tall oil glue used in paper-making using the present invention to obtain, and falls bits amount and falls bits amount than common sizing agent and reduce more than 30%.
The invention has the beneficial effects as follows:
(1) simple for process, cheaper starting materials is easy to get, and reduces cost, is easy to suitability for industrialized production;
(2) the paraffin tall oil glue used in paper-making environmental protection that obtains of the present invention, after applying glue, fast, the rete of rate of drying is not easily clamminess, and has certain moisture resistance;
(3) the paper mold of the paraffin tall oil glue used in paper-making using the present invention to obtain, falls bits amount and falls bits amount than common sizing agent and reduce more than 30%.
Detailed description of the invention
First be that talcum powder joins in distilled water by 1:5 by solid-to-liquid ratio, 60 ~ 70 DEG C are heated to microwave applicator, be placed on magnetic stirrer, stir with the rotating speed of 200 ~ 300r/min, under stirring, add the paraffin of mixed liquor gross mass 30 ~ 40%, after insulated and stirred 2 ~ 3h, filter the talcum powder after obtaining Adsorption Paraffin; Then 100 ~ 200mL poly adipate succinic acid ester and 50 ~ 80mL hydroxypropyl dimethyl silicone polymer are joined in the 1L there-necked flask with agitator and thermometer, put into water-bath and be warming up to 90 ~ 100 DEG C, add 80 ~ 100mL aqueous polyurethane again, start agitator to stir with the rotating speed of 300 ~ 400r/min, refrigerator is put into after stirring terminates, at 4 ~ 6 DEG C, leave standstill 12 ~ 18h, obtain silane-modified aqueous polyurethane; Next get the silane-modified aqueous polyurethane of 200 ~ 300mL pours in 1L tool plug conical flask together with the talcum powder after 30 ~ 50g Adsorption Paraffin, add the maleic anhydride of the agent of 3 ~ 5g Catalyzed by p-Toluenesulfonic Acid and equimolar amounts simultaneously, oil bath is heated to 70 ~ 80 DEG C, insulation is until after maleic anhydride melts completely, continue to be warming up to 85 ~ 95 DEG C, reaction 2 ~ 3h, obtains mixed liquor; 100 ~ 200mL mixed liquor obtained above is added subsequently in the there-necked flask that agitator, nitrogen wireway and reflux are housed, add 10 ~ 20mg polyacrylamide and 200 ~ 300mL deionized water again, start agitator and carry out stirring formation latex with the rotating speed of 500 ~ 600r/min; The mass concentration adding latex gross mass 1 ~ 2% in above-mentioned latex is the solution of sodium bisulfite of 25% and the concentration of latex gross mass 0.5 ~ 1% is the ammonium persulfate solution of 0.02mol/L, nitrogen is passed into again in there-necked flask, it is 10 ~ 15mL/min that nitrogen passes into speed, obtains making emulsifying agent by oneself under the protection of nitrogen after being warming up to 85 ~ 95 DEG C of insulation reaction 3 ~ 4h; Measure 300 ~ 400mL tall oil afterwards and put into pyroreaction still, be warming up to 150 ~ 200 DEG C of reaction 2 ~ 3h, until its complete melting, be that 1:2 joins in reactor by the volume ratio of above-mentioned self-control emulsifying agent and tall oil again, add 200 ~ 300mL distilled water again, when phase inversion trend appears in system, start agitator with the rotating speed rapid stirring 10 ~ 20min of 1000 ~ 1200r/min, obtain dispersion sizing agent; Finally after stirring terminates, when question response still naturally cools to 40 ~ 50 DEG C, improve rotating speed to 1600 ~ 1800r/min, the aluminium polychloride of dispersion sizing agent gross mass 0.5 ~ 1% is added under stirring, discharging after continuation stirring reaction 30 ~ 40min, obtains a kind of paraffin tall oil glue used in paper-making.
Example 1
First be that talcum powder joins in distilled water by 1:5 by solid-to-liquid ratio, 60 DEG C are heated to microwave applicator, be placed on magnetic stirrer, stir with the rotating speed of 200r/min, under stirring, add the paraffin of mixed liquor gross mass 30%, after insulated and stirred 2h, filter the talcum powder after obtaining Adsorption Paraffin; Then 100mL poly adipate succinic acid ester and 50mL hydroxypropyl dimethyl silicone polymer are joined in the 1L there-necked flask with agitator and thermometer, put into water-bath and be warming up to 90 DEG C, add 80mL aqueous polyurethane again, start agitator to stir with the rotating speed of 300r/min, refrigerator is put into after stirring terminates, at 4 DEG C, leave standstill 12h, obtain silane-modified aqueous polyurethane; Next get the silane-modified aqueous polyurethane of 200mL pours in 1L tool plug conical flask together with the talcum powder after 30g Adsorption Paraffin, add the maleic anhydride of the agent of 3g Catalyzed by p-Toluenesulfonic Acid and equimolar amounts simultaneously, oil bath is heated to 70 DEG C, insulation is until after maleic anhydride melts completely, continue to be warming up to 85 DEG C, reaction 2h, obtains mixed liquor; In the there-necked flask that agitator, nitrogen wireway and reflux are housed, add 100mL mixed liquor obtained above subsequently, then add 10mg polyacrylamide and 200mL deionized water, start agitator and carry out stirring formation latex with the rotating speed of 500r/min; The mass concentration adding latex gross mass 1% in above-mentioned latex is the solution of sodium bisulfite of 25% and the concentration of latex gross mass 0.5% is the ammonium persulfate solution of 0.02mol/L, nitrogen is passed into again in there-necked flask, it is 10mL/min that nitrogen passes into speed, obtains making emulsifying agent by oneself under the protection of nitrogen after being warming up to 85 DEG C of insulation reaction 3h; Measure 300mL tall oil afterwards and put into pyroreaction still, be warming up to 150 DEG C of reaction 2h, until its complete melting, be that 1:2 joins in reactor by the volume ratio of above-mentioned self-control emulsifying agent and tall oil again, add 200mL distilled water again, when phase inversion trend appears in system, start agitator with the rotating speed rapid stirring 10min of 1000r/min, obtain dispersion sizing agent; Finally after stirring terminates, when question response still naturally cools to 40 DEG C, improve rotating speed to 1600r/min, under stirring, add the aluminium polychloride of dispersion sizing agent gross mass 0.5%, discharging after continuation stirring reaction 30min, obtains a kind of paraffin tall oil glue used in paper-making.
This case process is simple, and during use, paraffin tall oil glue used in paper-making uniform application the present invention obtained is surperficial at moulded paper pulp product, wherein every 1m
2moulded paper pulp product surface smear 25mL paraffin tall oil glue used in paper-making, arranging hot pressing reshaping temperature is afterwards 40 DEG C, and pressure is 100kPa, dry heat repoussage shape 3min.After using, the rough surface of moulded paper pulp product not only can be made obviously to reduce, rate of drying is fast, and crosses the paper mold of the paraffin tall oil glue used in paper-making using the present invention to obtain, and falls bits amount and falls bits amount than common sizing agent and reduce 30%.
Example 2
First be that talcum powder joins in distilled water by 1:5 by solid-to-liquid ratio, 65 DEG C are heated to microwave applicator, be placed on magnetic stirrer, stir with the rotating speed of 250r/min, under stirring, add the paraffin of mixed liquor gross mass 35%, after insulated and stirred 2.5h, filter the talcum powder after obtaining Adsorption Paraffin; Then 150mL poly adipate succinic acid ester and 65mL hydroxypropyl dimethyl silicone polymer are joined in the 1L there-necked flask with agitator and thermometer, put into water-bath and be warming up to 95 DEG C, add 90mL aqueous polyurethane again, start agitator to stir with the rotating speed of 350r/min, refrigerator is put into after stirring terminates, at 5 DEG C, leave standstill 16h, obtain silane-modified aqueous polyurethane; Next get the silane-modified aqueous polyurethane of 250mL pours in 1L tool plug conical flask together with the talcum powder after 40g Adsorption Paraffin, add the maleic anhydride of the agent of 4g Catalyzed by p-Toluenesulfonic Acid and equimolar amounts simultaneously, oil bath is heated to 75 DEG C, insulation is until after maleic anhydride melts completely, continue to be warming up to 90 DEG C, reaction 2.5h, obtains mixed liquor; In the there-necked flask that agitator, nitrogen wireway and reflux are housed, add 150mL mixed liquor obtained above subsequently, then add 15mg polyacrylamide and 250mL deionized water, start agitator and carry out stirring formation latex with the rotating speed of 550r/min; The mass concentration adding latex gross mass 1.5% in above-mentioned latex is the solution of sodium bisulfite of 25% and the concentration of latex gross mass 0.8% is the ammonium persulfate solution of 0.02mol/L, nitrogen is passed into again in there-necked flask, it is 13mL/min that nitrogen passes into speed, obtains making emulsifying agent by oneself under the protection of nitrogen after being warming up to 90 DEG C of insulation reaction 3.5h; Measure 350mL tall oil afterwards and put into pyroreaction still, be warming up to 180 DEG C of reaction 2.5h, until its complete melting, be that 1:2 joins in reactor by the volume ratio of above-mentioned self-control emulsifying agent and tall oil again, add 250mL distilled water again, when phase inversion trend appears in system, start agitator with the rotating speed rapid stirring 15min of 1100r/min, obtain dispersion sizing agent; Finally after stirring terminates, when question response still naturally cools to 45 DEG C, improve rotating speed to 1700r/min, under stirring, add the aluminium polychloride of dispersion sizing agent gross mass 0.8%, discharging after continuation stirring reaction 35min, obtains a kind of paraffin tall oil glue used in paper-making.
This case process is simple, and during use, paraffin tall oil glue used in paper-making uniform application the present invention obtained is surperficial at moulded paper pulp product, wherein every 1.5m
2moulded paper pulp product surface smear 30mL paraffin tall oil glue used in paper-making, arranging hot pressing reshaping temperature is afterwards 50 DEG C, and pressure is 150kPa, dry heat repoussage shape 4min.After using, the rough surface of moulded paper pulp product not only can be made obviously to reduce, rate of drying is fast, and crosses the paper mold of the paraffin tall oil glue used in paper-making using the present invention to obtain, and falls bits amount and falls bits amount than common sizing agent and reduce 32%.
Example 3
First be that talcum powder joins in distilled water by 1:5 by solid-to-liquid ratio, 70 DEG C are heated to microwave applicator, be placed on magnetic stirrer, stir with the rotating speed of 300r/min, under stirring, add the paraffin of mixed liquor gross mass 40%, after insulated and stirred 3h, filter the talcum powder after obtaining Adsorption Paraffin; Then 200mL poly adipate succinic acid ester and 80mL hydroxypropyl dimethyl silicone polymer are joined in the 1L there-necked flask with agitator and thermometer, put into water-bath and be warming up to 100 DEG C, add 100mL aqueous polyurethane again, start agitator to stir with the rotating speed of 400r/min, refrigerator is put into after stirring terminates, at 6 DEG C, leave standstill 18h, obtain silane-modified aqueous polyurethane; Next get the silane-modified aqueous polyurethane of 300mL pours in 1L tool plug conical flask together with the talcum powder after 50g Adsorption Paraffin, add the maleic anhydride of the agent of 5g Catalyzed by p-Toluenesulfonic Acid and equimolar amounts simultaneously, oil bath is heated to 80 DEG C, insulation is until after maleic anhydride melts completely, continue to be warming up to 95 DEG C, reaction 3h, obtains mixed liquor; In the there-necked flask that agitator, nitrogen wireway and reflux are housed, add 200mL mixed liquor obtained above subsequently, then add 20mg polyacrylamide and 300mL deionized water, start agitator and carry out stirring formation latex with the rotating speed of 600r/min; The mass concentration adding latex gross mass 2% in above-mentioned latex is the solution of sodium bisulfite of 25% and the concentration of latex gross mass 1% is the ammonium persulfate solution of 0.02mol/L, nitrogen is passed into again in there-necked flask, it is 15mL/min that nitrogen passes into speed, obtains making emulsifying agent by oneself under the protection of nitrogen after being warming up to 95 DEG C of insulation reaction 4h; Measure 400mL tall oil afterwards and put into pyroreaction still, be warming up to 200 DEG C of reaction 3h, until its complete melting, be that 1:2 joins in reactor by the volume ratio of above-mentioned self-control emulsifying agent and tall oil again, add 300mL distilled water again, when phase inversion trend appears in system, start agitator with the rotating speed rapid stirring 20min of 1200r/min, obtain dispersion sizing agent; Finally after stirring terminates, when question response still naturally cools to 50 DEG C, improve rotating speed to 1800r/min, under stirring, add the aluminium polychloride of dispersion sizing agent gross mass 1%, discharging after continuation stirring reaction 40min, obtains a kind of paraffin tall oil glue used in paper-making.
This case process is simple, and during use, paraffin tall oil glue used in paper-making uniform application the present invention obtained is surperficial at moulded paper pulp product, wherein every 2m
2moulded paper pulp product surface smear 35mL paraffin tall oil glue used in paper-making, arranging hot pressing reshaping temperature is afterwards 60 DEG C, and pressure is 180kPa, dry heat repoussage shape 5min.After using, the rough surface of moulded paper pulp product not only can be made obviously to reduce, rate of drying is fast, and crosses the paper mold of the paraffin tall oil glue used in paper-making using the present invention to obtain, and falls bits amount and falls bits amount than common sizing agent and reduce 34%.
Claims (1)
1. a preparation method for paraffin tall oil glue used in paper-making, is characterized in that concrete preparation process is:
(1) be that talcum powder joins in distilled water by 1:5 by solid-to-liquid ratio, 60 ~ 70 DEG C are heated to microwave applicator, be placed on magnetic stirrer, stir with the rotating speed of 200 ~ 300r/min, under stirring, add the paraffin of mixed liquor gross mass 30 ~ 40%, after insulated and stirred 2 ~ 3h, filter the talcum powder after obtaining Adsorption Paraffin;
(2) 100 ~ 200mL poly adipate succinic acid ester and 50 ~ 80mL hydroxypropyl dimethyl silicone polymer are joined in the 1L there-necked flask with agitator and thermometer, put into water-bath and be warming up to 90 ~ 100 DEG C, add 80 ~ 100mL aqueous polyurethane again, start agitator to stir with the rotating speed of 300 ~ 400r/min, refrigerator is put into after stirring terminates, at 4 ~ 6 DEG C, leave standstill 12 ~ 18h, obtain silane-modified aqueous polyurethane;
(3) get the silane-modified aqueous polyurethane of 200 ~ 300mL pours in 1L tool plug conical flask together with the talcum powder after 30 ~ 50g Adsorption Paraffin, add the maleic anhydride of the agent of 3 ~ 5g Catalyzed by p-Toluenesulfonic Acid and equimolar amounts simultaneously, oil bath is heated to 70 ~ 80 DEG C, insulation is until after maleic anhydride melts completely, continue to be warming up to 85 ~ 95 DEG C, reaction 2 ~ 3h, obtains mixed liquor;
(4) in the there-necked flask that agitator, nitrogen wireway and reflux are housed, 100 ~ 200mL mixed liquor obtained above is added, add 10 ~ 20mg polyacrylamide and 200 ~ 300mL deionized water again, start agitator and carry out stirring formation latex with the rotating speed of 500 ~ 600r/min;
(5) mass concentration adding latex gross mass 1 ~ 2% in above-mentioned latex is the solution of sodium bisulfite of 25% and the concentration of latex gross mass 0.5 ~ 1% is the ammonium persulfate solution of 0.02mol/L, nitrogen is passed into again in there-necked flask, it is 10 ~ 15mL/min that nitrogen passes into speed, obtains making emulsifying agent by oneself under the protection of nitrogen after being warming up to 85 ~ 95 DEG C of insulation reaction 3 ~ 4h;
(6) measure 300 ~ 400mL tall oil and put into pyroreaction still, be warming up to 150 ~ 200 DEG C of reaction 2 ~ 3h, until its complete melting, be that 1:2 joins in reactor by the volume ratio of above-mentioned self-control emulsifying agent and tall oil again, add 200 ~ 300mL distilled water again, when phase inversion trend appears in system, start agitator with the rotating speed rapid stirring 10 ~ 20min of 1000 ~ 1200r/min, obtain dispersion sizing agent;
(7) after stirring terminates, when question response still naturally cools to 40 ~ 50 DEG C, improve rotating speed to 1600 ~ 1800r/min, the aluminium polychloride of dispersion sizing agent gross mass 0.5 ~ 1% is added under stirring, discharging after continuation stirring reaction 30 ~ 40min, obtains a kind of paraffin tall oil glue used in paper-making.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111691236A (en) * | 2020-05-26 | 2020-09-22 | 仙鹤股份有限公司 | Production method of quick-drying bible paper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111691236A (en) * | 2020-05-26 | 2020-09-22 | 仙鹤股份有限公司 | Production method of quick-drying bible paper |
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