Summary of the invention
The technical problem that the present invention mainly solves: single for retention agent Performance comparision traditional at present, the remaining harmful substance of the waste water not only produced in paper making process process, secondary pollution can be produced to environment, and paper pulp cost is high, the problem that retention effect is undesirable, provides a kind of modified cation polyacrylamide paper making retention agent.The present invention is first by carrying out preliminary modification by kwan-yin stone granulate and hydrochloric acid, hydrogen peroxide, embedded bamboo pole top layer again and carried out further modification, then modified kwan-yin stone granulate is mixed with bamboo fibre, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride, acrylamide monomer, put into reactor, again with gamma-aminopropyl-triethoxy-silane, N, the materials such as N-diethylaniline react, thus produce a kind of modified cation polyacrylamide paper making retention agent.Modified cation polyacrylamide paper making retention agent preparation technology obtained by the present invention is simple, and retention effect is good, not only for environment without any harm, economic benefit and social benefit remarkable, and the input of paper pulp raw material can be reduced, reduce costs.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
(1) get 4 ~ 6kg kwan-yin stone to put into pulverizer and be ground into 100 ~ 110 order particles, again particle is put into container, in container, add mixed liquor flood particle 2 ~ 3cm, described mixed liquor to be mass fraction be 40% hydrochloric acid solution and mass fraction be 35% hydrogen peroxide by volume 1:1 mix, slow stirring 1 ~ 2h, speed setting is 100 ~ 120r/min;
(2) after above-mentioned stirring terminates, add in said vesse mass fraction be 60% sodium hydroxide solution regulate pH be 6.5 ~ 7.0, again the mixture in container is put into centrifuge centrifugation, get centrifugal thing, centrifuge speed is set as 11000 ~ 14000r/min, the centrifugal thing of gained is put into baking oven and dries;
(3) high pressure spray mechanism of qi is used to be sprayed into 1 ~ 3mm place, fresh bamboo pole surface the centrifugal thing after above-mentioned oven dry, again bamboo pole is carried out natural drying, after bamboo pole surface turns yellow, the top layer of scraping bamboo pole surface 3 ~ 4mm, puts it in pulverizer and is ground into 110 ~ 130 order powder;
(4) powder getting the above-mentioned gained of 1 ~ 2kg puts into container, add 0.8 ~ 1.5kg MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride respectively wherein and 1 ~ 2kg acrylamide monomer stirs, add glycerol more wherein and flood mixture 2 ~ 3cm, after stirring 30 ~ 40min, leave standstill 1 ~ 2h;
(5) after above-mentioned standing end, mixture in container is poured in the reactor of 50L, add 100 ~ 120g gamma-aminopropyl-triethoxy-silane, 1 ~ 2L deionized water, 80 ~ 100g benzoyl peroxide and 60 ~ 90gN, N-diethylaniline wherein respectively again, stir, nitrogen is used to be forced into 3 ~ 5MPa to reactor, slowly be heated to 70 ~ 90 DEG C, firing rate is 6 DEG C/min, and under ultra violet lamp, stir 20 ~ 25h, speed setting is 450 ~ 600r/min;
(6) after above-mentioned stirring terminates, be decompressed to standard atmospheric pressure, discharging after temperature is down to 28 ~ 35 DEG C, and serviceability temperature is 5 ~ 10 DEG C of absolute ethyl alcohols floods discharging thing 2 ~ 4cm, after stirring 10 ~ 15min, leave standstill 1 ~ 2h, filter to obtain filtrate, the filtrate of gained is put into pulverizer and be ground into 110 ~ 120 order powder, the powder of gained is put into baking oven and dries, then be cooled to room temperature, modified cation polyacrylamide paper making retention agent can be obtained.
Application process of the present invention is: during operation, first 5 ~ 8kg string of papermaking is carried out in water making beating dispersion, and to control beating degree be 30 ° ~ 50 ° SR, add the talcum powder of 30 ~ 35% of string quality afterwards, the cationic starch of 5 ~ 7% and the alkyl ketene dimer of 0.3 ~ 0.5%, approach system before paper machine net is put into after mixing, before net approach system pressurized screen before add relative to the cationic polyacrylamide paper making retention agent obtained by the present invention of the mass ratio 0.8 ~ 1.2% of string, then the anionic polyacrylamide of the mass ratio 0.5 ~ 0.6% relative to string is added before the headbox, finally manufacture paper with pulp on paper machine shaping.Not only operation is simple, decreases the input of paper pulp raw material, and without any secondary pollution, obtained paper quality improves and significantly improves.
The invention has the beneficial effects as follows:
(1) the modified cation polyacrylamide paper making retention agent preparation technology obtained by the present invention is simple, and retention effect is good, not only for environment without any harm, and economic benefit and social benefit remarkable;
(2) in operating process, the input of paper pulp raw material can be reduced, reduce by more than 70% production cost;
(3) effectively improve the quality of paper.
Detailed description of the invention
First get 4 ~ 6kg kwan-yin stone to put into pulverizer and be ground into 100 ~ 110 order particles, again particle is put into container, in container, add mixed liquor flood particle 2 ~ 3cm, described mixed liquor to be mass fraction be 40% hydrochloric acid solution and mass fraction be 35% hydrogen peroxide by volume 1:1 mix, slow stirring 1 ~ 2h, speed setting is 100 ~ 120r/min; Then after above-mentioned stirring terminates, add in said vesse mass fraction be 60% sodium hydroxide solution regulate pH be 6.5 ~ 7.0, again the mixture in container is put into centrifuge centrifugation, get centrifugal thing, centrifuge speed is set as 11000 ~ 14000r/min, the centrifugal thing of gained is put into baking oven and dries; Next high pressure spray mechanism of qi is used to be sprayed into 1 ~ 3mm place, fresh bamboo pole surface the centrifugal thing after above-mentioned oven dry, again bamboo pole is carried out natural drying, after bamboo pole surface turns yellow, the top layer of scraping bamboo pole surface 3 ~ 4mm, puts it in pulverizer and is ground into 110 ~ 130 order powder; The powder getting the above-mentioned gained of 1 ~ 2kg subsequently puts into container, add 0.8 ~ 1.5kg MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride respectively wherein and 1 ~ 2kg acrylamide monomer stirs, add glycerol more wherein and flood mixture 2 ~ 3cm, after stirring 30 ~ 40min, leave standstill 1 ~ 2h; Afterwards after above-mentioned standing end, mixture in container is poured in the reactor of 50L, add 100 ~ 120g gamma-aminopropyl-triethoxy-silane, 1 ~ 2L deionized water, 80 ~ 100g benzoyl peroxide and 60 ~ 90gN, N-diethylaniline wherein respectively again, stir, nitrogen is used to be forced into 3 ~ 5MPa to reactor, slowly be heated to 70 ~ 90 DEG C, firing rate is 6 DEG C/min, and under ultra violet lamp, stir 20 ~ 25h, speed setting is 450 ~ 600r/min; Finally after above-mentioned stirring terminates, be decompressed to standard atmospheric pressure, discharging after temperature is down to 28 ~ 35 DEG C, and serviceability temperature is 5 ~ 10 DEG C of absolute ethyl alcohols floods discharging thing 2 ~ 4cm, after stirring 10 ~ 15min, leave standstill 1 ~ 2h, filter to obtain filtrate, the filtrate of gained is put into pulverizer and be ground into 110 ~ 120 order powder, the powder of gained is put into baking oven and dries, then be cooled to room temperature, modified cation polyacrylamide paper making retention agent can be obtained.
Example 1
First get 4kg kwan-yin stone to put into pulverizer and be ground into 100 order particles, again particle is put into container, in container, add mixed liquor flood particle 2cm, described mixed liquor to be mass fraction be 40% hydrochloric acid solution and mass fraction be 35% hydrogen peroxide by volume 1:1 mix, slow stirring 1h, speed setting is 100r/min; Then after above-mentioned stirring terminates, add in said vesse mass fraction be 60% sodium hydroxide solution regulate pH be 6.5, again the mixture in container is put into centrifuge centrifugation, get centrifugal thing, centrifuge speed is set as 11000r/min, the centrifugal thing of gained is put into baking oven and dries; Next used by the centrifugal thing after above-mentioned oven dry high pressure spray mechanism of qi to be sprayed into 1mm place, fresh bamboo pole surface, then bamboo pole is carried out natural drying, after bamboo pole surface turns yellow, the top layer of scraping bamboo pole surface 3mm, puts it in pulverizer and is ground into 110 order powder; The powder getting the above-mentioned gained of 1kg subsequently puts into container, adds 0.8kg MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride respectively wherein and 1kg acrylamide monomer stirs, then adds glycerol wherein and flood mixture 2cm, after stirring 30min, leaves standstill 1h; Afterwards after above-mentioned standing end, mixture in container is poured in the reactor of 50L, add 100g gamma-aminopropyl-triethoxy-silane, 1L deionized water, 80g benzoyl peroxide and 60gN, N-diethylaniline wherein respectively again, stir, nitrogen is used to be forced into 3MPa to reactor, slowly be heated to 70 DEG C, firing rate is 6 DEG C/min, and under ultra violet lamp, stir 20h, speed setting is 450r/min; Finally after above-mentioned stirring terminates, be decompressed to standard atmospheric pressure, discharging after temperature is down to 28 DEG C, and serviceability temperature is 5 DEG C of absolute ethyl alcohols floods discharging thing 2cm, after stirring 10min, leave standstill 1h, filter to obtain filtrate, the filtrate of gained is put into pulverizer and be ground into 110 order powder, the powder of gained is put into baking oven and dries, then be cooled to room temperature, modified cation polyacrylamide paper making retention agent can be obtained.
The inventive method is unique, when operating, first the 5kg string of papermaking is carried out in water making beating dispersion, and to control beating degree be 30 ° of SR, add the talcum powder of 1.5kg afterwards, the cationic starch of 250g and the alkyl ketene dimer of 15g, approach system before paper machine net is put into after mixing, before net approach system pressurized screen before add the cationic polyacrylamide paper making retention agent obtained by the present invention of 40g, then add the anionic polyacrylamide of 25g before the headbox, finally manufacture paper with pulp on paper machine shaping.Not only operation is simple, decreases the input of the paper pulp raw material of 70%, and without any secondary pollution, obtained paper quality improves and significantly improves.
Example 2
First get 5kg kwan-yin stone to put into pulverizer and be ground into 105 order particles, again particle is put into container, in container, add mixed liquor flood particle 2.5cm, described mixed liquor to be mass fraction be 40% hydrochloric acid solution and mass fraction be 35% hydrogen peroxide by volume 1:1 mix, slow stirring 1.5h, speed setting is 110r/min; Then after above-mentioned stirring terminates, add in said vesse mass fraction be 60% sodium hydroxide solution regulate pH be 6.7, again the mixture in container is put into centrifuge centrifugation, get centrifugal thing, centrifuge speed is set as 12500r/min, the centrifugal thing of gained is put into baking oven and dries; Next high pressure spray mechanism of qi is used by the centrifugal thing after above-mentioned oven dry to be sprayed into 2mm place, fresh bamboo pole surface, again bamboo pole is carried out natural drying, after bamboo pole surface turns yellow, the top layer of scraping bamboo pole surface 3.5mm, puts it in pulverizer and is ground into 120 order powder; The powder getting the above-mentioned gained of 1.5kg subsequently puts into container, add 1.2kg MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride respectively wherein and 1.5kg acrylamide monomer stirs, add glycerol more wherein and flood mixture 2.5cm, after stirring 35min, leave standstill 1.5h; Afterwards after above-mentioned standing end, mixture in container is poured in the reactor of 50L, add 110g gamma-aminopropyl-triethoxy-silane, 1.5L deionized water, 90g benzoyl peroxide and 85gN, N-diethylaniline wherein respectively again, stir, nitrogen is used to be forced into 4MPa to reactor, slowly be heated to 80 DEG C, firing rate is 6 DEG C/min, and under ultra violet lamp, stir 23h, speed setting is 550r/min; Finally after above-mentioned stirring terminates, be decompressed to standard atmospheric pressure, discharging after temperature is down to 32 DEG C, and serviceability temperature is 8 DEG C of absolute ethyl alcohols floods discharging thing 3cm, after stirring 13min, leave standstill 1.5h, filter to obtain filtrate, the filtrate of gained is put into pulverizer and be ground into 115 order powder, the powder of gained is put into baking oven and dries, then be cooled to room temperature, modified cation polyacrylamide paper making retention agent can be obtained.
The inventive method is unique, when operating, first the 6.5kg string of papermaking is carried out in water making beating dispersion, and to control beating degree be 40 ° of SR, add the talcum powder of 2.08kg afterwards, the cationic starch of 390g and the alkyl ketene dimer of 26g, approach system before paper machine net is put into after mixing, before net approach system pressurized screen before add the cationic polyacrylamide paper making retention agent obtained by the present invention of 65g, then add the anionic polyacrylamide of 32.5g before the headbox, finally manufacture paper with pulp on paper machine shaping.Not only operation is simple, decreases the input of the paper pulp raw material of 75%, and without any secondary pollution, obtained paper quality improves and significantly improves.
Example 3
First get 6kg kwan-yin stone to put into pulverizer and be ground into 110 order particles, again particle is put into container, in container, add mixed liquor flood particle 3cm, described mixed liquor to be mass fraction be 40% hydrochloric acid solution and mass fraction be 35% hydrogen peroxide by volume 1:1 mix, slow stirring 2h, speed setting is 120r/min; Then after above-mentioned stirring terminates, add in said vesse mass fraction be 60% sodium hydroxide solution regulate pH be 7.0, again the mixture in container is put into centrifuge centrifugation, get centrifugal thing, centrifuge speed is set as 14000r/min, the centrifugal thing of gained is put into baking oven and dries; Next used by the centrifugal thing after above-mentioned oven dry high pressure spray mechanism of qi to be sprayed into 3mm place, fresh bamboo pole surface, then bamboo pole is carried out natural drying, after bamboo pole surface turns yellow, the top layer of scraping bamboo pole surface 4mm, puts it in pulverizer and is ground into 130 order powder; The powder getting the above-mentioned gained of 2kg subsequently puts into container, adds 1.5kg MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride respectively wherein and 2kg acrylamide monomer stirs, then adds glycerol wherein and flood mixture 3cm, after stirring 40min, leaves standstill 2h; Afterwards after above-mentioned standing end, mixture in container is poured in the reactor of 50L, add 120g gamma-aminopropyl-triethoxy-silane, 2L deionized water, 100g benzoyl peroxide and 90gN, N-diethylaniline wherein respectively again, stir, nitrogen is used to be forced into 5MPa to reactor, slowly be heated to 90 DEG C, firing rate is 6 DEG C/min, and under ultra violet lamp, stir 25h, speed setting is 600r/min; Finally after above-mentioned stirring terminates, be decompressed to standard atmospheric pressure, discharging after temperature is down to 35 DEG C, and serviceability temperature is 10 DEG C of absolute ethyl alcohols floods discharging thing 4cm, after stirring 15min, leave standstill 2h, filter to obtain filtrate, the filtrate of gained is put into pulverizer and be ground into 120 order powder, the powder of gained is put into baking oven and dries, then be cooled to room temperature, modified cation polyacrylamide paper making retention agent can be obtained.
The inventive method is unique, when operating, first the 8kg string of papermaking is carried out in water making beating dispersion, and to control beating degree be 50 ° of SR, add the talcum powder of 2.8kg afterwards, the cationic starch of 560g and the alkyl ketene dimer of 40g, approach system before paper machine net is put into after mixing, before net approach system pressurized screen before add the cationic polyacrylamide paper making retention agent obtained by the present invention of 96g, then add the anionic polyacrylamide of 48g before the headbox, finally manufacture paper with pulp on paper machine shaping.Not only operation is simple, decreases the input of the paper pulp raw material of 80%, and without any secondary pollution, obtained paper quality improves and significantly improves.