CN102635033B - Preparation method of no-sizing lag beewax/AKD (alkyl ketene dimer) neutral/alkaline sizing agent - Google Patents

Preparation method of no-sizing lag beewax/AKD (alkyl ketene dimer) neutral/alkaline sizing agent Download PDF

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CN102635033B
CN102635033B CN201210136225.0A CN201210136225A CN102635033B CN 102635033 B CN102635033 B CN 102635033B CN 201210136225 A CN201210136225 A CN 201210136225A CN 102635033 B CN102635033 B CN 102635033B
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akd
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CN102635033A (en
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张国运
彭莉
张昌辉
刘侠
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Shenzhen Pengbo Information Technology Co ltd
Yancheng Qinglong Jinbang Water Co ltd
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Shaanxi University of Science and Technology
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Abstract

The invention discloses a preparation method of a no-sizing lag beewax/AKD (alkyl ketene dimer) neutral/alkaline sizing agent. The preparation method comprises the steps as follows: firstly, carrying out degradation on cassava starch under the action of fungal alpha-amylase; secondly, carrying out cationization on the degraded cassava starch by 3-chlorine-2-hydroxypropyl trimethyl ammonium chloride under the action of sodium hydroxide; thirdly, neutralizing with acetic acid to obtain a cationic cassava starch solution; fourthly, carrying out a graft copolymerization reaction on the cationic cassava starch solution and vinyl acetate, butyl acrylate, methacrylic acid dodecyl ester, acrylic acid and allyl alcohol to obtain a copolymer which is a sizing agent with excellent performance; and lastly, applying the copolymer as an emulsifier to the emulsion of the AKD and the beewax so as to obtain the no-sizing lag beewax/AKD neutral/alkaline sizing agent. The prepared neutral/alkaline sizing agent is small in viscosity of the emulsion and good in stability, the particles in the emulsion carry positive and negative charges, the molecules contain semi-cross-linked groups, and the sizing agent is facilitated to be left and be in tight connection with paper fibers with negative charges, so that the sizing performance is improved, the sizing effect is remarkable, and the sizing lag phenomenon is avoided.

Description

A kind of without in applying glue hysteresis beeswax/AKD/preparation method of alkaline sizing agent
Technical field
The invention belongs to polymer chemistry sizing agent technical field, particularly a kind of without in applying glue hysteresis beeswax/AKD/preparation method of alkaline sizing agent.
Background technology
The major progress of modern applying glue technology be in/popularization of alkaline bleach liquor sizing technology, during acid papermaking is converted into/alkaline paper-making is the great change in world's papermaking history.In/alkaline bleach liquor sizing is in papermaking process, pH value is adjusted to more than 7, in principle without a kind of glue applying method of aluminum sulfate.In conventional/alkaline sizing agent alkyl ketene dimer (being called for short AKD) is the product of phase late 1940s research and development, AKD be a kind of can with the response type of fibrin reaction in/alkaline sizing agent, it can serve as internal sizing agent, can serve as again Cypres.Its design feature is to be made up of active group and hydrophobic grouping, the fusing point of AKD is lower, hydroxyl reaction on active group quaternary lactonic ring energy and cellulose under the hot conditions of Dryer Section of Paper Machine in molecule forms beta-keto ester bond and is positioned on fiber, and hydrophobic group chain alkyl produces water resistant effect at fiber surface.By in AKD/alkaline bleach liquor sizing, the one way retention of Paper White Degree, feel, WATER RESISTANCE, physical strength, printability, resistance to ag(e)ing and filler etc. is all significantly improved.And can to adopt cheap powdered whiting be filler, reduce the content of harmful substance in plain boiled water, improve the cyclic utilization rate of plain boiled water, AKD is lower than the cost of acid accumulator size simultaneously.Adopt AKD carry out in/alkaline bleach liquor sizing can improve paper product quality and price, reduction energy consumption, improve environmental pollution and paper machine operation performance etc., can obtain obvious economic benefit and social benefit, therefore increasing papermaking enterprise is recognized superiority and the necessity of use in AKD/alkaline sizing agent.China's paper making raw material is take straw pulp as main, timber resource shortage, and secondary stock consumption increases, in utilization/alkaline bleach liquor sizing technology has realistic meaning.Follow in AKD/alkaline bleach liquor sizing technology progressively expands in China's Application Areas, technology is increasingly mature, in/benefit of alkaline paper-making progressively embodied, accelerated paper industry by acid papermaking in/trend that alkaline paper-making changes, in recent years AKD become domestic paper plant use at most, the most ripe, the most effectively in/alkaline sizing agent.
In AKD/alkaline bleach liquor sizing gives paper some excellent properties, also has its weak point simultaneously.AKD can continue to carry out with reacting of paper fibre within a certain period of time, and AKD applying glue not yet completes after page is dry, after batching, is still carrying out, and in 24 hours, in some weeks even thereafter, is also carrying out.Along with the prolongation of resting period, the degree of sizing of page can rise, therefore just can reach best sizing efficiency under paper roll after machine a period of time.Be prone to during this period the phenomenon that sizing efficiency goes down, and the strength character of sized paper decreases.Improve in recent years and to improve the research of AKD emulsion property increasingly active, alleviate or eliminate the phenomenon that AKD emulsion sizing efficiency goes down, it is the problem that China's papermaking researcher is made great efforts research always that development and production arrives the short and stable AKD emulsion of sizability of time of best sizing efficiency.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of without in applying glue hysteresis beeswax/AKD/preparation method of alkaline sizing agent, in gained/alkaline sizing agent has good stability, it is stable that the water repelling property of lower machine after dryer sizing paper and strength character keep, and eliminated the phenomenon that AKD emulsion sizing efficiency goes down.
For achieving the above object, the technical solution used in the present invention is:
A kind of without in applying glue hysteresis beeswax/AKD/preparation method of alkaline sizing agent, comprise following concrete steps:
The first step, by water, tapioca and fungal alpha-amylase add and in the first reactor, in the time of 50-55 ℃, react 1.0-2.0 hour, obtain degrading cassava starch, water, the mass ratio of tapioca and fungal alpha-amylase is 200: 100: 0.6, then add NaOH, be warmed up to 60-70 ℃ and add 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride, be warming up to again 90-95 ℃ of reaction 1.0-2.0 hour, be cooled to 50-55 ℃ and add acetic acid, be down to again 20-30 ℃, tapioca, NaOH, the mass ratio of 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride and acetic acid is 100: 10: 70: 7, regulate solid content to 25% to adding water in the first reactor, obtain cation cassava starch solution,
Second step, by vinylacetate, butyl acrylate, metering system dodecyl gallate, acrylic acid and propenyl by 21: 7: 7: the mass ratio of 4: 1 is mixed and made into mix monomer,
The 3rd step, makes ammonium persulfate aqueous solution by ammonium persulfate and water with mass ratio at 1: 20,
The 4th step, in the second reactor, add cation cassava starch solution and water, the mass ratio of cation cassava starch solution and water is 80: 99, be warming up to 60-70 ℃, add ammonium persulfate aqueous solution and mix monomer simultaneously, the mass ratio of cation cassava starch solution, ammonium persulfate aqueous solution and mix monomer is 80: 21: 40, and whole feed time is 1.0-2.0 hour
The 5th step, reinforced after in 80-90 ℃ of insulation reaction 2.0-3.0 hour,
The 6th step, cools to 30-40 ℃, and with 100-200 order net filtration, discharging, obtains AKD emulsifying agent,
The 7th step, in the 3rd reactor, add AKD emulsifying agent, beeswax and AKD, wherein the mass ratio of AKD emulsifying agent, beeswax and AKD is 110: 100: 130, be warming up to 80-85 ℃, after beeswax and AKD melting, stir 30-40 minute, under agitation add the hot water of 80-85 ℃ to regulate solid content to 15%, make the sub-stable emulsion of cation cassava starch AKD, by sub-stable emulsion after 25-30MPa homogeneous, be cooled to 25-30 ℃, obtain solid content and be 15% stable without in applying glue hysteresis beeswax/AKD/alkaline sizing agent.
By this without lag behind in beeswax/AKD/alkaline sizing agent of applying glue for 110 grams/meter of manufacturing paper with pulp with 100% domestic waste paper 2in fluting medium top sizing, starch consumption 60-65 kg/ton paper, without in applying glue hysteresis beeswax/AKD/alkaline sizing agent 2.5-3.0 kg/ton paper, the Cobb value of lower machine after dryer sizing fluting medium is 30-35 gram/meter 2, ring crush index is 7.5-8.0 ox rice 2/ gram; The Cobb value of 2 hours after dryer sizing fluting mediums is 28-33 gram/meter 2, ring crush index is 7.4-7.9 ox rice 2/ gram; The Cobb value of 24 hours after dryer sizing fluting mediums is 28-33 gram/meter 2, ring crush index is 7.4-7.9 ox rice 2/ gram; The Cobb value of 7 days after dryer sizing fluting mediums is 27-32 gram/meter 2, ring crush index is 7.3-7.8 ox rice 2/ gram, there is not applying glue hysteresis.
In preparation process of the present invention, do not use little molecular surface active agent, be conducive to the raising of environmental protection and effect.First then tapioca degraded is carried out to cationization, carry out graft copolymerization with acrylate again, the copolymer obtaining itself is exactly the sizing agent of excellent performance, set it as the emulsification that emulsifying agent is applied to AKD and beeswax, in preparation/alkaline sizing agent emulsion viscosity is little, good stability, emulsion particle is with positive charge and negative electrical charge, contain again half cross-linked structure simultaneously, contribute to keep and can combine closely with electronegative paper fibre, therefore greatly improved sizability, sizing efficiency is obvious, does not occur applying glue hysteresis.
The specific embodiment
Below will with specific embodiment, the present invention is described in further detail.
Embodiment mono-
A kind of without in applying glue hysteresis beeswax/AKD/preparation method of alkaline sizing agent, specifically comprise the following steps:
The first step, by 200 grams of water, 100 grams of tapiocas and 0.6 gram of fungal alpha-amylase add in the first reactor and react 1.0 hours in the time of 50 ℃, obtain degrading cassava starch, water, the mass ratio of tapioca and fungal alpha-amylase is 200: 100: 0.6, then add 10 grams of NaOH, be warmed up to 60 ℃ and add 70 grams of 3-chloro-2-hydroxypropyl-trimethyl ammonium chlorides, be warming up to again 90 ℃ of reactions 2.0 hours, be cooled to 50 ℃ and add 7 grams of acetic acid, be down to again 20 ℃, tapioca, NaOH, the mass ratio of 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride and acetic acid is 100: 10: 70: 7, regulate solid content to 25% to adding water in the first reactor, obtain cation cassava starch solution,
Second step, by 21 grams of vinylacetates, 7 grams of butyl acrylates, 7 grams of metering system dodecyl gallates, 4 grams of acrylic acid and 1 gram of propenyl by 21: 7: 7: the mass ratio of 4: 1 is mixed and made into mix monomer,
The 3rd step, makes ammonium persulfate aqueous solution by 1 gram of ammonium persulfate and 20 grams of water with mass ratio at 1: 20,
The 4th step, in the second reactor, add 80 grams of cation cassava starch solution and 99 grams of water, the mass ratio of cation cassava starch solution and water is 80: 99, be warming up to 60 ℃, add ammonium persulfate aqueous solution and mix monomer simultaneously, the mass ratio of cation cassava starch solution, ammonium persulfate aqueous solution and mix monomer is 80: 21: 40, and whole feed time is 1.0 hours
The 5th step, reinforced after in 80 ℃ of insulation reaction 3.0 hours,
The 6th step, cools to 30 ℃, and with 100 order net filtrations, discharging, obtains AKD emulsifying agent,
The 7th step, in the 3rd reactor, add 110 grams of AKD emulsifying agents, 100 grams of beeswaxs and 130 grams of AKD, wherein the mass ratio of AKD emulsifying agent, beeswax and AKD is 110: 100: 130, be warming up to 80 ℃, after beeswax and AKD melting, stir 30 minutes, under agitation add the hot water of 80 ℃ to regulate solid content to 15%, make the sub-stable emulsion of cation cassava starch AKD, by sub-stable emulsion after 25MPa homogeneous, be cooled to 25 ℃, obtain solid content and be 15% stable without in applying glue hysteresis beeswax/AKD/alkaline sizing agent.
By this without lag behind in beeswax/AKD/alkaline sizing agent of applying glue for 110 grams/meter of manufacturing paper with pulp with 100% domestic waste paper 2in fluting medium top sizing, starch consumption 60 kg/ton paper, without in applying glue hysteresis beeswax/AKD/alkaline sizing agent 2.5 kg/ton paper, the Cobb value of lower machine after dryer sizing fluting medium is 35 grams/meter 2, ring crush index is 7.5 Ns of rice 2/ gram; The Cobb value of 2 hours after dryer sizing fluting mediums is 33 grams/meter 2, ring crush index is 7.4 Ns of rice 2/ gram; The Cobb value of 24 hours after dryer sizing fluting mediums is 33 grams/meter 2, ring crush index is 7.4 Ns of rice 2/ gram; The Cobb value of 7 days after dryer sizing fluting mediums is 32 grams/meter 2, ring crush index is 7.3 Ns of rice 2/ gram, there is not applying glue hysteresis.
Embodiment bis-
A kind of without in applying glue hysteresis beeswax/AKD/preparation method of alkaline sizing agent, specifically comprise the following steps:
The first step, by 200 grams of water, 100 grams of tapiocas and 0.6 gram of fungal alpha-amylase add in the first reactor and react 1.2 hours in the time of 51 ℃, obtain degrading cassava starch, water, the mass ratio of tapioca and fungal alpha-amylase is 200: 100: 0.6, then add 10 grams of NaOH, be warmed up to 62 ℃ and add 70 grams of 3-chloro-2-hydroxypropyl-trimethyl ammonium chlorides, be warming up to again 91 ℃ of reactions 1.8 hours, be cooled to 51 ℃ and add 7 grams of acetic acid, be down to again 22 ℃, tapioca, NaOH, the mass ratio of 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride and acetic acid is 100: 10: 70: 7, regulate solid content to 25% to adding water in the first reactor, obtain cation cassava starch solution,
Second step, by 21 grams of vinylacetates, 7 grams of butyl acrylates, 7 grams of metering system dodecyl gallates, 4 grams of acrylic acid and 1 gram of propenyl by 21: 7: 7: the mass ratio of 4: 1 is mixed and made into mix monomer,
The 3rd step, makes ammonium persulfate aqueous solution by 1 gram of ammonium persulfate and 20 grams of water with mass ratio at 1: 20,
The 4th step, in the second reactor, add 80 grams of cation cassava starch solution and 99 grams of water, the mass ratio of cation cassava starch solution and water is 80: 99, be warming up to 62 ℃, add ammonium persulfate aqueous solution and mix monomer simultaneously, the mass ratio of cation cassava starch solution, ammonium persulfate aqueous solution and mix monomer is 80: 21: 40, and whole feed time is 1.2 hours
The 5th step, reinforced after in 82 ℃ of insulation reaction 2.8 hours,
The 6th step, cools to 32 ℃, and with 120 order net filtrations, discharging, obtains AKD emulsifying agent,
The 7th step, in the 3rd reactor, add 110 grams of AKD emulsifying agents, 100 grams of beeswaxs and 130 grams of AKD, wherein the mass ratio of AKD emulsifying agent, beeswax and AKD is 110: 100: 130, be warming up to 81 ℃, after beeswax and AKD melting, stir 32 minutes, under agitation add the hot water of 81 ℃ to regulate solid content to 15%, make the sub-stable emulsion of cation cassava starch AKD, by sub-stable emulsion after 26MPa homogeneous, be cooled to 26 ℃, obtain solid content and be 15% stable without in applying glue hysteresis beeswax/AKD/alkaline sizing agent.
By this without lag behind in beeswax/AKD/alkaline sizing agent of applying glue for 110 grams/meter of manufacturing paper with pulp with 100% domestic waste paper 2in fluting medium top sizing, starch consumption 61 kg/ton paper, without in applying glue hysteresis beeswax/AKD/alkaline sizing agent 2.6 kg/ton paper, the Cobb value of lower machine after dryer sizing fluting medium is 34 grams/meter 2, ring crush index is 7.6 Ns of rice 2/ gram; The Cobb value of 2 hours after dryer sizing fluting mediums is 32 grams/meter 2, ring crush index is 7.5 Ns of rice 2/ gram; The Cobb value of 24 hours after dryer sizing fluting mediums is 32 grams/meter 2, ring crush index is 7.5 Ns of rice 2/ gram; The Cobb value of 7 days after dryer sizing fluting mediums is 31 grams/meter 2, ring crush index is 7.4 Ns of rice 2/ gram, there is not applying glue hysteresis.
Embodiment tri-
A kind of without in applying glue hysteresis beeswax/AKD/preparation method of alkaline sizing agent, specifically comprise the following steps:
The first step, by 200 grams of water, 100 grams of tapiocas and 0.6 gram of fungal alpha-amylase add in the first reactor and react 1.4 hours in the time of 52 ℃, obtain degrading cassava starch, water, the mass ratio of tapioca and fungal alpha-amylase is 200: 100: 0.6, then add 10 grams of NaOH, be warmed up to 64 ℃ and add 70 grams of 3-chloro-2-hydroxypropyl-trimethyl ammonium chlorides, be warming up to again 92 ℃ of reactions 1.6 hours, be cooled to 52 ℃ and add 7 grams of acetic acid, be down to again 24 ℃, tapioca, NaOH, the mass ratio of 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride and acetic acid is 100: 10: 70: 7, regulate solid content to 25% to adding water in the first reactor, obtain cation cassava starch solution,
Second step, by 21 grams of vinylacetates, 7 grams of butyl acrylates, 7 grams of metering system dodecyl gallates, 4 grams of acrylic acid and 1 gram of propenyl by 21: 7: 7: the mass ratio of 4: 1 is mixed and made into mix monomer,
The 3rd step, makes ammonium persulfate aqueous solution by 1 gram of ammonium persulfate and 20 grams of water with mass ratio at 1: 20,
The 4th step, in the second reactor, add 80 grams of cation cassava starch solution and 99 grams of water, the mass ratio of cation cassava starch solution and water is 80: 99, be warming up to 64 ℃, add ammonium persulfate aqueous solution and mix monomer simultaneously, the mass ratio of cation cassava starch solution, ammonium persulfate aqueous solution and mix monomer is 80: 21: 40, and whole feed time is 1.4 hours
The 5th step, reinforced after in 84 ℃ of insulation reaction 2.6 hours,
The 6th step, cools to 34 ℃, and with 140 order net filtrations, discharging, obtains AKD emulsifying agent,
The 7th step, in the 3rd reactor, add 110 grams of AKD emulsifying agents, 100 grams of beeswaxs and 130 grams of AKD, wherein the mass ratio of AKD emulsifying agent, beeswax and AKD is 110: 100: 130, be warming up to 82 ℃, after beeswax and AKD melting, stir 34 minutes, under agitation add the hot water of 82 ℃ to regulate solid content to 15%, make the sub-stable emulsion of cation cassava starch AKD, by sub-stable emulsion after 27MPa homogeneous, be cooled to 27 ℃, obtain solid content and be 15% stable without in applying glue hysteresis beeswax/AKD/alkaline sizing agent.
By this without lag behind in beeswax/AKD/alkaline sizing agent of applying glue for 110 grams/meter of manufacturing paper with pulp with 100% domestic waste paper 2in fluting medium top sizing, starch consumption 62 kg/ton paper, without in applying glue hysteresis beeswax/AKD/alkaline sizing agent 2.7 kg/ton paper, the Cobb value of lower machine after dryer sizing fluting medium is 33 grams/meter 2, ring crush index is 7.7 Ns of rice 2/ gram; The Cobb value of 2 hours after dryer sizing fluting mediums is 31 grams/meter 2, ring crush index is 7.6 Ns of rice 2/ gram; The Cobb value of 24 hours after dryer sizing fluting mediums is 31 grams/meter 2, ring crush index is 7.6 Ns of rice 2/ gram; The Cobb value of 7 days after dryer sizing fluting mediums is 30 grams/meter 2, ring crush index is 7.5 Ns of rice 2/ gram, there is not applying glue hysteresis.
Embodiment tetra-
A kind of without in applying glue hysteresis beeswax/AKD/preparation method of alkaline sizing agent, specifically comprise the following steps:
The first step, by 200 grams of water, 100 grams of tapiocas and 0.6 gram of fungal alpha-amylase add in the first reactor and react 1.6 hours in the time of 53 ℃, obtain degrading cassava starch, water, the mass ratio of tapioca and fungal alpha-amylase is 200: 100: 0.6, then add 10 grams of NaOH, be warmed up to 66 ℃ and add 70 grams of 3-chloro-2-hydroxypropyl-trimethyl ammonium chlorides, be warming up to again 93 ℃ of reactions 1.4 hours, be cooled to 53 ℃ and add 7 grams of acetic acid, be down to again 26 ℃, tapioca, NaOH, the mass ratio of 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride and acetic acid is 100: 10: 70: 7, regulate solid content to 25% to adding water in the first reactor, obtain cation cassava starch solution,
Second step, by 21 grams of vinylacetates, 7 grams of butyl acrylates, 7 grams of metering system dodecyl gallates, 4 grams of acrylic acid and 1 gram of propenyl by 21: 7: 7: the mass ratio of 4: 1 is mixed and made into mix monomer,
The 3rd step, makes ammonium persulfate aqueous solution by 1 gram of ammonium persulfate and 20 grams of water with mass ratio at 1: 20,
The 4th step, in the second reactor, add 80 grams of cation cassava starch solution and 99 grams of water, the mass ratio of cation cassava starch solution and water is 80: 99, be warming up to 66 ℃, add ammonium persulfate aqueous solution and mix monomer simultaneously, the mass ratio of cation cassava starch solution, ammonium persulfate aqueous solution and mix monomer is 80: 21: 40, and whole feed time is 1.6 hours
The 5th step, reinforced after in 86 ℃ of insulation reaction 2.4 hours,
The 6th step, cools to 36 ℃, and with 160 order net filtrations, discharging, obtains AKD emulsifying agent,
The 7th step, in the 3rd reactor, add 110 grams of AKD emulsifying agents, 100 grams of beeswaxs and 130 grams of AKD, wherein the mass ratio of AKD emulsifying agent, beeswax and AKD is 110: 100: 130, be warming up to 83 ℃, after beeswax and AKD melting, stir 36 minutes, under agitation add the hot water of 83 ℃ to regulate solid content to 15%, make the sub-stable emulsion of cation cassava starch AKD, by sub-stable emulsion after 28MPa homogeneous, be cooled to 28 ℃, obtain solid content and be 15% stable without in applying glue hysteresis beeswax/AKD/alkaline sizing agent.
By this without lag behind in beeswax/AKD/alkaline sizing agent of applying glue for 110 grams/meter of manufacturing paper with pulp with 100% domestic waste paper 2in fluting medium top sizing, starch consumption 63 kg/ton paper, without in applying glue hysteresis beeswax/AKD/alkaline sizing agent 2.8 kg/ton paper, the Cobb value of lower machine after dryer sizing fluting medium is 32 grams/meter 2, ring crush index is 7.8 Ns of rice 2/ gram; The Cobb value of 2 hours after dryer sizing fluting mediums is 30 grams/meter 2, ring crush index is 7.7 Ns of rice 2/ gram; The Cobb value of 24 hours after dryer sizing fluting mediums is 30 grams/meter 2, ring crush index is 7.7 Ns of rice 2/ gram; The Cobb value of 7 days after dryer sizing fluting mediums is 29 grams/meter 2, ring crush index is 7.6 Ns of rice 2/ gram, there is not applying glue hysteresis.
Embodiment five
A kind of without in applying glue hysteresis beeswax/AKD/preparation method of alkaline sizing agent, specifically comprise the following steps:
The first step, by 200 grams of water, 100 grams of tapiocas and 0.6 gram of fungal alpha-amylase add in the first reactor and react 1.8 hours in the time of 54 ℃, obtain degrading cassava starch, water, the mass ratio of tapioca and fungal alpha-amylase is 200: 100: 0.6, then add 10 grams of NaOH, be warmed up to 68 ℃ and add 70 grams of 3-chloro-2-hydroxypropyl-trimethyl ammonium chlorides, be warming up to again 94 ℃ of reactions 1.2 hours, be cooled to 54 ℃ and add 7 grams of acetic acid, be down to again 28 ℃, tapioca, NaOH, the mass ratio of 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride and acetic acid is 100: 10: 70: 7, regulate solid content to 25% to adding water in the first reactor, obtain cation cassava starch solution,
Second step, by 21 grams of vinylacetates, 7 grams of butyl acrylates, 7 grams of metering system dodecyl gallates, 4 grams of acrylic acid and 1 gram of propenyl by 21: 7: 7: the mass ratio of 4: 1 is mixed and made into mix monomer,
The 3rd step, makes ammonium persulfate aqueous solution by 1 gram of ammonium persulfate and 20 grams of water with mass ratio at 1: 20,
The 4th step, in the second reactor, add 80 grams of cation cassava starch solution and 99 grams of water, the mass ratio of cation cassava starch solution and water is 80: 99, be warming up to 68 ℃, add ammonium persulfate aqueous solution and mix monomer simultaneously, the mass ratio of cation cassava starch solution, ammonium persulfate aqueous solution and mix monomer is 80: 21: 40, and whole feed time is 1.8 hours
The 5th step, reinforced after in 88 ℃ of insulation reaction 2.2 hours,
The 6th step, cools to 38 ℃, and with 180 order net filtrations, discharging, obtains AKD emulsifying agent,
The 7th step, in the 3rd reactor, add 110 grams of AKD emulsifying agents, 100 grams of beeswaxs and 130 grams of AKD, wherein the mass ratio of AKD emulsifying agent, beeswax and AKD is 110: 100: 130, be warming up to 84 ℃, after beeswax and AKD melting, stir 38 minutes, under agitation add the hot water of 84 ℃ to regulate solid content to 15%, make the sub-stable emulsion of cation cassava starch AKD, by sub-stable emulsion after 29MPa homogeneous, be cooled to 29 ℃, obtain solid content and be 15% stable without in applying glue hysteresis beeswax/AKD/alkaline sizing agent.
By this without lag behind in beeswax/AKD/alkaline sizing agent of applying glue for 110 grams/meter of manufacturing paper with pulp with 100% domestic waste paper 2in fluting medium top sizing, starch consumption 64 kg/ton paper, without in applying glue hysteresis beeswax/AKD/alkaline sizing agent 2.9 kg/ton paper, the Cobb value of lower machine after dryer sizing fluting medium is 31 grams/meter 2, ring crush index is 7.9 Ns of rice 2/ gram; The Cobb value of 2 hours after dryer sizing fluting mediums is 29 grams/meter 2, ring crush index is 7.8 Ns of rice 2/ gram; The Cobb value of 24 hours after dryer sizing fluting mediums is 29 grams/meter 2, ring crush index is 7.8 Ns of rice 2/ gram; The Cobb value of 7 days after dryer sizing fluting mediums is 28 grams/meter 2, ring crush index is 7.7 Ns of rice 2/ gram, there is not applying glue hysteresis.
Embodiment six
A kind of without in applying glue hysteresis beeswax/AKD/preparation method of alkaline sizing agent, specifically comprise the following steps:
The first step, by 200 grams of water, 100 grams of tapiocas and 0.6 gram of fungal alpha-amylase add in the first reactor and react 2.0 hours in the time of 55 ℃, obtain degrading cassava starch, water, the mass ratio of tapioca and fungal alpha-amylase is 200: 100: 0.6, then add 10 grams of NaOH, be warmed up to 70 ℃ and add 70 grams of 3-chloro-2-hydroxypropyl-trimethyl ammonium chlorides, be warming up to again 95 ℃ of reactions 1.0 hours, be cooled to 55 ℃ and add 7 grams of acetic acid, be down to again 30 ℃, tapioca, NaOH, the mass ratio of 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride and acetic acid is 100: 10: 70: 7, regulate solid content to 25% to adding water in the first reactor, obtain cation cassava starch solution,
Second step, by 21 grams of vinylacetates, 7 grams of butyl acrylates, 7 grams of metering system dodecyl gallates, 4 grams of acrylic acid and 1 gram of propenyl by 21: 7: 7: the mass ratio of 4: 1 is mixed and made into mix monomer,
The 3rd step, makes ammonium persulfate aqueous solution by 1 gram of ammonium persulfate and 20 grams of water with mass ratio at 1: 20,
The 4th step, in the second reactor, add 80 grams of cation cassava starch solution and 99 grams of water, the mass ratio of cation cassava starch solution and water is 80: 99, be warming up to 70 ℃, add ammonium persulfate aqueous solution and mix monomer simultaneously, the mass ratio of cation cassava starch solution, ammonium persulfate aqueous solution and mix monomer is 80: 21: 40, and whole feed time is 2.0 hours
The 5th step, reinforced after in 90 ℃ of insulation reaction 2.0 hours,
The 6th step, cools to 40 ℃, and with 200 order net filtrations, discharging, obtains AKD emulsifying agent,
The 7th step, in the 3rd reactor, add 110 grams of AKD emulsifying agents, 100 grams of beeswaxs and 130 grams of AKD, wherein the mass ratio of AKD emulsifying agent, beeswax and AKD is 110: 100: 130, be warming up to 85 ℃, after beeswax and AKD melting, stir 40 minutes, under agitation add the hot water of 85 ℃ to regulate solid content to 15%, make the sub-stable emulsion of cation cassava starch AKD, by sub-stable emulsion after 30MPa homogeneous, be cooled to 30 ℃, obtain solid content and be 15% stable without in applying glue hysteresis beeswax/AKD/alkaline sizing agent.
By this without lag behind in beeswax/AKD/alkaline sizing agent of applying glue for 110 grams/meter of manufacturing paper with pulp with 100% domestic waste paper 2in fluting medium top sizing, starch consumption 65 kg/ton paper, without in applying glue hysteresis beeswax/AKD/alkaline sizing agent 3.0 kg/ton paper, the Cobb value of lower machine after dryer sizing fluting medium is 30 grams/meter 2, ring crush index is 8.0 Ns of rice 2/ gram; The Cobb value of 2 hours after dryer sizing fluting mediums is 28 grams/meter 2, ring crush index is 7.9 Ns of rice 2/ gram; The Cobb value of 24 hours after dryer sizing fluting mediums is 28 grams/meter 2, ring crush index is 7.9 Ns of rice 2/ gram; The Cobb value of 7 days after dryer sizing fluting mediums is 27 grams/meter 2, ring crush index is 7.8 Ns of rice 2/ gram, there is not applying glue hysteresis.
In sum, the one of invention gained is without the preparation method of lag behind in beeswax/AKD/alkaline sizing agent of applying glue, after adopting tapioca degraded, carry out cationization, carry out graft copolymerization with acrylate again, the copolymer obtaining itself is exactly the sizing agent of excellent performance, set it as the emulsification that emulsifying agent is applied to AKD and beeswax, in preparation/alkaline sizing agent emulsion viscosity is little, good stability, emulsion particle is with positive charge and negative electrical charge, in molecule, contain again half crosslinked group, contribute to keep and can combine closely with electronegative paper fibre, therefore greatly improved sizability, sizing efficiency is obvious, there is not applying glue hysteresis.

Claims (7)

  1. Without in applying glue hysteresis beeswax/AKD/preparation method of alkaline sizing agent, it is characterized in that, comprise following concrete steps:
    The first step, by water, tapioca and fungal alpha-amylase add and in the first reactor, in the time of 50-55 ℃, react 1.0-2.0 hour, obtain degrading cassava starch, water, the mass ratio of tapioca and fungal alpha-amylase is 200: 100: 0.6, then add NaOH, be warmed up to 60-70 ℃ and add 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride, be warming up to again 90-95 ℃ of reaction 1.0-2.0 hour, be cooled to 50-55 ℃ and add acetic acid, be down to again 20-30 ℃, tapioca, NaOH, the mass ratio of 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride and acetic acid is 100: 10: 70: 7, regulate solid content to 25% to adding water in the first reactor, obtain cation cassava starch solution,
    Second step, by vinylacetate, butyl acrylate, metering system dodecyl gallate, acrylic acid and propenyl by 21: 7: 7: the mass ratio of 4: 1 is mixed and made into mix monomer,
    The 3rd step, makes ammonium persulfate aqueous solution by ammonium persulfate and water with mass ratio at 1: 20,
    The 4th step, in the second reactor, add cation cassava starch solution and water, the mass ratio of cation cassava starch solution and water is 80: 99, be warming up to 60-70 ℃, add ammonium persulfate aqueous solution and mix monomer simultaneously, the mass ratio of cation cassava starch solution, ammonium persulfate aqueous solution and mix monomer is 80: 21: 40, and whole feed time is 1.0-2.0 hour
    The 5th step, reinforced after in 80-90 ℃ of insulation reaction 2.0-3.0 hour,
    The 6th step, cools to 30-40 ℃, and with 100-200 order net filtration, discharging, obtains AKD emulsifying agent,
    The 7th step, in the 3rd reactor, add AKD emulsifying agent, beeswax and AKD, wherein the mass ratio of AKD emulsifying agent, beeswax and AKD is 110: 100: 130, be warming up to 80-85 ℃, after beeswax and AKD melting, stir 30-40 minute, under agitation add the hot water of 80-85 ℃ to regulate solid content to 15%, make the sub-stable emulsion of cation cassava starch AKD, by sub-stable emulsion after 25-30MPa homogeneous, be cooled to 25-30 ℃, obtain solid content and be 15% stable without in applying glue hysteresis beeswax/AKD/alkaline sizing agent.
  2. One according to claim 1 without in applying glue hysteresis beeswax/AKD/preparation method of alkaline sizing agent, it is characterized in that, specifically comprise the following steps:
    The first step, by 200 grams of water, 100 grams of tapiocas and 0.6 gram of fungal alpha-amylase add in the first reactor and react 1.0 hours in the time of 50 ℃, obtain degrading cassava starch, water, the mass ratio of tapioca and fungal alpha-amylase is 200: 100: 0.6, then add 10 grams of NaOH, be warmed up to 60 ℃ and add 70 grams of 3-chloro-2-hydroxypropyl-trimethyl ammonium chlorides, be warming up to again 90 ℃ of reactions 2.0 hours, be cooled to 50 ℃ and add 7 grams of acetic acid, be down to again 20 ℃, tapioca, NaOH, the mass ratio of 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride and acetic acid is 100: 10: 70: 7, regulate solid content to 25% to adding water in the first reactor, obtain cation cassava starch solution,
    Second step, by 21 grams of vinylacetates, 7 grams of butyl acrylates, 7 grams of metering system dodecyl gallates, 4 grams of acrylic acid and 1 gram of propenyl by 21: 7: 7: the mass ratio of 4: 1 is mixed and made into mix monomer,
    The 3rd step, makes ammonium persulfate aqueous solution by 1 gram of ammonium persulfate and 20 grams of water with mass ratio at 1: 20,
    The 4th step, in the second reactor, add 80 grams of cation cassava starch solution and 99 grams of water, the mass ratio of cation cassava starch solution and water is 80: 99, be warming up to 60 ℃, add ammonium persulfate aqueous solution and mix monomer simultaneously, the mass ratio of cation cassava starch solution, ammonium persulfate aqueous solution and mix monomer is 80: 21: 40, and whole feed time is 1.0 hours
    The 5th step, reinforced after in 80 ℃ of insulation reaction 3.0 hours,
    The 6th step, cools to 30 ℃, and with 100 order net filtrations, discharging, obtains AKD emulsifying agent,
    The 7th step, in the 3rd reactor, add 110 grams of AKD emulsifying agents, 100 grams of beeswaxs and 130 grams of AKD, wherein the mass ratio of AKD emulsifying agent, beeswax and AKD is 110: 100: 130, be warming up to 80 ℃, after beeswax and AKD melting, stir 30 minutes, under agitation add the hot water of 80 ℃ to regulate solid content to 15%, make the sub-stable emulsion of cation cassava starch AKD, by sub-stable emulsion after 25MPa homogeneous, be cooled to 25 ℃, obtain solid content and be 15% stable without in applying glue hysteresis beeswax/AKD/alkaline sizing agent.
  3. One according to claim 1 without in applying glue hysteresis beeswax/AKD/preparation method of alkaline sizing agent, it is characterized in that, specifically comprise the following steps:
    The first step, by 200 grams of water, 100 grams of tapiocas and 0.6 gram of fungal alpha-amylase add in the first reactor and react 1.2 hours in the time of 51 ℃, obtain degrading cassava starch, water, the mass ratio of tapioca and fungal alpha-amylase is 200: 100: 0.6, then add 10 grams of NaOH, be warmed up to 62 ℃ and add 70 grams of 3-chloro-2-hydroxypropyl-trimethyl ammonium chlorides, be warming up to again 91 ℃ of reactions 1.8 hours, be cooled to 51 ℃ and add 7 grams of acetic acid, be down to again 22 ℃, tapioca, NaOH, the mass ratio of 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride and acetic acid is 100: 10: 70: 7, regulate solid content to 25% to adding water in the first reactor, obtain cation cassava starch solution,
    Second step, by 21 grams of vinylacetates, 7 grams of butyl acrylates, 7 grams of metering system dodecyl gallates, 4 grams of acrylic acid and 1 gram of propenyl by 21: 7: 7: the mass ratio of 4: 1 is mixed and made into mix monomer,
    The 3rd step, makes ammonium persulfate aqueous solution by 1 gram of ammonium persulfate and 20 grams of water with mass ratio at 1: 20,
    The 4th step, in the second reactor, add 80 grams of cation cassava starch solution and 99 grams of water, the mass ratio of cation cassava starch solution and water is 80: 99, be warming up to 62 ℃, add ammonium persulfate aqueous solution and mix monomer simultaneously, the mass ratio of cation cassava starch solution, ammonium persulfate aqueous solution and mix monomer is 80: 21: 40, and whole feed time is 1.2 hours
    The 5th step, reinforced after in 82 ℃ of insulation reaction 2.8 hours,
    The 6th step, cools to 32 ℃, and with 120 order net filtrations, discharging, obtains AKD emulsifying agent,
    The 7th step, in the 3rd reactor, add 110 grams of AKD emulsifying agents, 100 grams of beeswaxs and 130 grams of AKD, wherein the mass ratio of AKD emulsifying agent, beeswax and AKD is 110: 100: 130, be warming up to 81 ℃, after beeswax and AKD melting, stir 32 minutes, under agitation add the hot water of 81 ℃ to regulate solid content to 15%, make the sub-stable emulsion of cation cassava starch AKD, by sub-stable emulsion after 26MPa homogeneous, be cooled to 26 ℃, obtain solid content and be 15% stable without in applying glue hysteresis beeswax/AKD/alkaline sizing agent.
  4. One according to claim 1 without in applying glue hysteresis beeswax/AKD/preparation method of alkaline sizing agent, it is characterized in that, specifically comprise the following steps:
    The first step, by 200 grams of water, 100 grams of tapiocas and 0.6 gram of fungal alpha-amylase add in the first reactor and react 1.4 hours in the time of 52 ℃, obtain degrading cassava starch, water, the mass ratio of tapioca and fungal alpha-amylase is 200: 100: 0.6, then add 10 grams of NaOH, be warmed up to 64 ℃ and add 70 grams of 3-chloro-2-hydroxypropyl-trimethyl ammonium chlorides, be warming up to again 92 ℃ of reactions 1.6 hours, be cooled to 52 ℃ and add 7 grams of acetic acid, be down to again 24 ℃, tapioca, NaOH, the mass ratio of 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride and acetic acid is 100: 10: 70: 7, regulate solid content to 25% to adding water in the first reactor, obtain cation cassava starch solution,
    Second step, by 21 grams of vinylacetates, 7 grams of butyl acrylates, 7 grams of metering system dodecyl gallates, 4 grams of acrylic acid and 1 gram of propenyl by 21: 7: 7: the mass ratio of 4: 1 is mixed and made into mix monomer,
    The 3rd step, makes ammonium persulfate aqueous solution by 1 gram of ammonium persulfate and 20 grams of water with mass ratio at 1: 20,
    The 4th step, in the second reactor, add 80 grams of cation cassava starch solution and 99 grams of water, the mass ratio of cation cassava starch solution and water is 80: 99, be warming up to 64 ℃, add ammonium persulfate aqueous solution and mix monomer simultaneously, the mass ratio of cation cassava starch solution, ammonium persulfate aqueous solution and mix monomer is 80: 21: 40, and whole feed time is 1.4 hours
    The 5th step, reinforced after in 84 ℃ of insulation reaction 2.6 hours,
    The 6th step, cools to 34 ℃, and with 140 order net filtrations, discharging, obtains AKD emulsifying agent,
    The 7th step, in the 3rd reactor, add 110 grams of AKD emulsifying agents, 100 grams of beeswaxs and 130 grams of AKD, wherein the mass ratio of AKD emulsifying agent, beeswax and AKD is 110: 100: 130, be warming up to 82 ℃, after beeswax and AKD melting, stir 34 minutes, under agitation add the hot water of 82 ℃ to regulate solid content to 15%, make the sub-stable emulsion of cation cassava starch AKD, by sub-stable emulsion after 27MPa homogeneous, be cooled to 27 ℃, obtain solid content and be 15% stable without in applying glue hysteresis beeswax/AKD/alkaline sizing agent.
  5. One according to claim 1 without in applying glue hysteresis beeswax/AKD/preparation method of alkaline sizing agent, it is characterized in that, specifically comprise the following steps:
    The first step, by 200 grams of water, 100 grams of tapiocas and 0.6 gram of fungal alpha-amylase add in the first reactor and react 1.6 hours in the time of 53 ℃, obtain degrading cassava starch, water, the mass ratio of tapioca and fungal alpha-amylase is 200: 100: 0.6, then add 10 grams of NaOH, be warmed up to 66 ℃ and add 70 grams of 3-chloro-2-hydroxypropyl-trimethyl ammonium chlorides, be warming up to again 93 ℃ of reactions 1.4 hours, be cooled to 53 ℃ and add 7 grams of acetic acid, be down to again 26 ℃, tapioca, NaOH, the mass ratio of 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride and acetic acid is 100: 10: 70: 7, regulate solid content to 25% to adding water in the first reactor, obtain cation cassava starch solution,
    Second step, by 21 grams of vinylacetates, 7 grams of butyl acrylates, 7 grams of metering system dodecyl gallates, 4 grams of acrylic acid and 1 gram of propenyl by 21: 7: 7: the mass ratio of 4: 1 is mixed and made into mix monomer,
    The 3rd step, makes ammonium persulfate aqueous solution by 1 gram of ammonium persulfate and 20 grams of water with mass ratio at 1: 20,
    The 4th step, in the second reactor, add 80 grams of cation cassava starch solution and 99 grams of water, the mass ratio of cation cassava starch solution and water is 80: 99, be warming up to 66 ℃, add ammonium persulfate aqueous solution and mix monomer simultaneously, the mass ratio of cation cassava starch solution, ammonium persulfate aqueous solution and mix monomer is 80: 21: 40, and whole feed time is 1.6 hours
    The 5th step, reinforced after in 86 ℃ of insulation reaction 2.4 hours,
    The 6th step, cools to 36 ℃, and with 160 order net filtrations, discharging, obtains AKD emulsifying agent,
    The 7th step, in the 3rd reactor, add 110 grams of AKD emulsifying agents, 100 grams of beeswaxs and 130 grams of AKD, wherein the mass ratio of AKD emulsifying agent, beeswax and AKD is 110: 100: 130, be warming up to 83 ℃, after beeswax and AKD melting, stir 36 minutes, under agitation add the hot water of 83 ℃ to regulate solid content to 15%, make the sub-stable emulsion of cation cassava starch AKD, by sub-stable emulsion after 28MPa homogeneous, be cooled to 28 ℃, obtain solid content and be 15% stable without in applying glue hysteresis beeswax/AKD/alkaline sizing agent.
  6. One according to claim 1 without in applying glue hysteresis beeswax/AKD/preparation method of alkaline sizing agent, it is characterized in that, specifically comprise the following steps:
    The first step, by 200 grams of water, 100 grams of tapiocas and 0.6 gram of fungal alpha-amylase add in the first reactor and react 1.8 hours in the time of 54 ℃, obtain degrading cassava starch, water, the mass ratio of tapioca and fungal alpha-amylase is 200: 100: 0.6, then add 10 grams of NaOH, be warmed up to 68 ℃ and add 70 grams of 3-chloro-2-hydroxypropyl-trimethyl ammonium chlorides, be warming up to again 94 ℃ of reactions 1.2 hours, be cooled to 54 ℃ and add 7 grams of acetic acid, be down to again 28 ℃, tapioca, NaOH, the mass ratio of 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride and acetic acid is 100: 10: 70: 7, regulate solid content to 25% to adding water in the first reactor, obtain cation cassava starch solution,
    Second step, by 21 grams of vinylacetates, 7 grams of butyl acrylates, 7 grams of metering system dodecyl gallates, 4 grams of acrylic acid and 1 gram of propenyl by 21: 7: 7: the mass ratio of 4: 1 is mixed and made into mix monomer,
    The 3rd step, makes ammonium persulfate aqueous solution by 1 gram of ammonium persulfate and 20 grams of water with mass ratio at 1: 20,
    The 4th step, in the second reactor, add 80 grams of cation cassava starch solution and 99 grams of water, the mass ratio of cation cassava starch solution and water is 80: 99, be warming up to 68 ℃, add ammonium persulfate aqueous solution and mix monomer simultaneously, the mass ratio of cation cassava starch solution, ammonium persulfate aqueous solution and mix monomer is 80: 21: 40, and whole feed time is 1.8 hours
    The 5th step, reinforced after in 88 ℃ of insulation reaction 2.2 hours,
    The 6th step, cools to 38 ℃, and with 180 order net filtrations, discharging, obtains AKD emulsifying agent,
    The 7th step, in the 3rd reactor, add 110 grams of AKD emulsifying agents, 100 grams of beeswaxs and 130 grams of AKD, wherein the mass ratio of AKD emulsifying agent, beeswax and AKD is 110: 100: 130, be warming up to 84 ℃, after beeswax and AKD melting, stir 38 minutes, under agitation add the hot water of 84 ℃ to regulate solid content to 15%, make the sub-stable emulsion of cation cassava starch AKD, by sub-stable emulsion after 29MPa homogeneous, be cooled to 29 ℃, obtain solid content and be 15% stable without in applying glue hysteresis beeswax/AKD/alkaline sizing agent.
  7. One according to claim 1 without in applying glue hysteresis beeswax/AKD/preparation method of alkaline sizing agent, it is characterized in that, specifically comprise the following steps:
    The first step, by 200 grams of water, 100 grams of tapiocas and 0.6 gram of fungal alpha-amylase add in the first reactor and react 2.0 hours in the time of 55 ℃, obtain degrading cassava starch, water, the mass ratio of tapioca and fungal alpha-amylase is 200: 100: 0.6, then add 10 grams of NaOH, be warmed up to 70 ℃ and add 70 grams of 3-chloro-2-hydroxypropyl-trimethyl ammonium chlorides, be warming up to again 95 ℃ of reactions 1.0 hours, be cooled to 55 ℃ and add 7 grams of acetic acid, be down to again 30 ℃, tapioca, NaOH, the mass ratio of 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride and acetic acid is 100: 10: 70: 7, regulate solid content to 25% to adding water in the first reactor, obtain cation cassava starch solution,
    Second step, by 21 grams of vinylacetates, 7 grams of butyl acrylates, 7 grams of metering system dodecyl gallates, 4 grams of acrylic acid and 1 gram of propenyl by 21: 7: 7: the mass ratio of 4: 1 is mixed and made into mix monomer,
    The 3rd step, makes ammonium persulfate aqueous solution by 1 gram of ammonium persulfate and 20 grams of water with mass ratio at 1: 20,
    The 4th step, in the second reactor, add 80 grams of cation cassava starch solution and 99 grams of water, the mass ratio of cation cassava starch solution and water is 80: 99, be warming up to 70 ℃, add ammonium persulfate aqueous solution and mix monomer simultaneously, the mass ratio of cation cassava starch solution, ammonium persulfate aqueous solution and mix monomer is 80: 21: 40, and whole feed time is 2.0 hours
    The 5th step, reinforced after in 90 ℃ of insulation reaction 2.0 hours,
    The 6th step, cools to 40 ℃, and with 200 order net filtrations, discharging, obtains AKD emulsifying agent,
    The 7th step, in the 3rd reactor, add 110 grams of AKD emulsifying agents, 100 grams of beeswaxs and 130 grams of AKD, wherein the mass ratio of AKD emulsifying agent, beeswax and AKD is 110: 100: 130, be warming up to 85 ℃, after beeswax and AKD melting, stir 40 minutes, under agitation add the hot water of 85 ℃ to regulate solid content to 15%, make the sub-stable emulsion of cation cassava starch AKD, by sub-stable emulsion after 30MPa homogeneous, be cooled to 30 ℃, obtain solid content and be 15% stable without in applying glue hysteresis beeswax/AKD/alkaline sizing agent.
CN201210136225.0A 2012-05-04 2012-05-04 Preparation method of no-sizing lag beewax/AKD (alkyl ketene dimer) neutral/alkaline sizing agent Expired - Fee Related CN102635033B (en)

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