CN101760149B - Environmental-friendly amylopectin composite adhesive for paper products and production method thereof - Google Patents
Environmental-friendly amylopectin composite adhesive for paper products and production method thereof Download PDFInfo
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Abstract
The invention discloses an environmental-friendly amylopectin composite adhesive for paper products and a production method thereof. The composite adhesive is prepared by oxidizing, cross-linking, etherifying and pasting starch to generate a modified starch adhesive, modifying polyvinyl alcohol to be used as a reinforcing agent, adding a preserving agent and a drier, and compounding. The environmental-friendly amylopectin composite adhesive for the paper product has strong initial adhesion and adhesive force, high-speed drying, fast natural air-drying without the phenomenon of wire drawing, corrugation deviation, corrugation-collapse, and the like, favorable cardboard hardness and stiffness, and has no efforescence, and does not absorb moisture. The invention is applied to the glue for producing three domestic corrugated boards and applied to the glue for various paper barrels, paper tubes, cement bag papers, furniture and interior decorations.
Description
Technical field:
The invention belongs to adhesive technology field, relate to a kind of composite adhesive of the paper product taking starch as raw material and production method thereof.
Background technology:
The glue paste that corrugated cardboard is used, after banning use of water glass adhesive, develops the various starch adhesives that are applied to corrugated board production in succession.Mainly contain ative starch and Sumstar 190 and various auxiliary agent is mixed into glue, make taking borax as linking agent.Such starch adhesive producing when corrugated cardboard, often occurs: after 1. gelling wire drawing, glue, open limit, collapse stupefied distortion or corrugated cardboard shrink reveal stupefied, run stupefied; 2. the deflection of fluting board and difference of hardness, be difficult for natural air drying, easily the accumulation of salt in the surface soil, the moisture absorption etc.; 3. the tackiness agent storage time short, apt to deteriorate and turn sour, smelly; 4. operational requirement is high, difficulty is large, and the producer that lacks drying plant is difficult to use; 5. yield poorly, cost is high.
China produces the producer of corrugated cardboard at present, mainly contains three types: one is the continuous production line of corrugated cardboard, and its tackiness agent used is the carrier glue of raw starch and the gelatinization of auxiliary agent mixing portion, gluing on cardboard through high temperature hot pressing gelatinization moulding; Another kind is small-sized carton producer, generally adopts single-side machine to produce corrugated cardboard, and glue used is oxidized starch glue gelatinization, that have better bonding force and mobility, applying glue on cardboard through colding pressing and natural air drying moulding; The third semi continuous being made up of single-side machine is produced, and its glue used is produced with glue identical with single-side machine.The production of above three types corrugated cardboard is starch or Sumstar 190 adding assistant with glue, all have that starch consumption is large, production cost is high, energy consumption is high, product performance are unstable, fluting board product can not natural-wind dry, difference of hardness, the easily accumulation of salt in the surface soil, the easy defect such as the moisture absorption.
Summary of the invention:
The object of the invention is that the starch consumption that exists for existing starch adhesive is large, energy consumption is high, product performance are unstable and fluting board product is difficult for natural-wind dry, difference of hardness, the easily accumulation of salt in the surface soil, the easy technical problem such as the moisture absorption, a kind of composite adhesive product and production method thereof are provided.
Technical scheme of the present invention is: by adopting excessive urea as de-aldehyde agent, remove unnecessary free formaldehyde, remove murder by poisoning, and generate Precondensed UreaFormaldehyde Resin, strengthen bonding force and the water resistance of starch adhesive.Again polyvinyl alcohol is made to cyclization, obtain water-fast six-ring compound, improve bonding force and the water resistance of product.Finally add sanitas, siccative, compoundly obtain a kind of contained free formaldehyde and reach GB and allow the environmental-friendly amylopectin composite adhesive for paper products below 0.8%.
The present invention is achieved in that
Environmental-friendly amylopectin composite adhesive for paper products and production method thereof, be by starch oxidation, crosslinked, etherificate, gelatinization, generates modified starch tackiness agent, polyvinyl alcohol carried out to modification as toughener, then add sanitas, siccative to be composited.Use comprises the raw material of following parts by weight:
90～110 parts of starch; 2～9 parts, oxygenant; 2～9 parts of oxidation terminators; 1～10 part of linking agent; 2～20 parts of linking agent terminators; 1～9 part of etherifying agent; 2.5～5 parts of paste agents; 5～15 parts of tougheners; 1～5 part of cyclizing agent; 1～3 part of sanitas; 10～20 parts of siccative; PH conditioning agent is by technique pH value required amount; 500～750 parts, water.
Described starch comprises potato starch and cereal starch, and preferably tapioca (flour), W-Gum or sorghum starch can use wherein one or more kinds of mixtures.
Described oxygenant comprises the wherein a kind of or mixture of two kinds of hydrogen peroxide, clorox.
Described oxidation terminator comprises wherein a kind of or more than one mixture of S-WAT, sodium thionyl, Sulfothiorine.
Described linking agent comprises formaldehyde, epoxy chloropropane.
Described complexing agent and linking agent terminator comprise urea.
Described etherifying agent comprises monochloroacetic acid, sodium monochloracetate.
Described toughener comprises polyvinyl alcohol.
Described cyclizing agent comprises urea.
Described sanitas comprises wherein a kind of or more than one mixture of zinc sulfate, zinc chloride and Sodium Benzoate.
Described siccative comprises the wherein a kind of or mixture of two kinds of wilkinite, bentonite.
The production method of environmental-friendly amylopectin composite adhesive for paper products of the present invention, its processing step is:
(1) preparation of starch suspension: first 200～300 parts, water is placed in to reactor, starts agitator, 90～110 parts of starch are added in reactor, stir the starch suspension of making 30%;
(2) oxidizing reaction: add 2～9 parts, oxygenant in starch suspension, starch is carried out to oxidizing reaction, obtain after the Sumstar 190 of expection, add 2～9 parts of oxidation terminators, stop oxidizing reaction, through leaving standstill, filtering, washing, adds water and makes 30% Sumstar 190 suspension again;
(3) crosslinking reaction: in above-mentioned (2) Sumstar 190 suspension, regulate PH1.5～2 with mineral acid, add again 1～10 part of linking agent, then add 2～20 parts of complexing agent and cyclizing agents, make Sumstar 190 be cross-linked complex reaction, the water resistance and the bonding force that improve starch adhesive, described mineral acid is sulfuric acid, hydrochloric acid, phosphoric acid or nitric acid;
(4) etherification reaction: starch reaction liquid pH12～13 that regulate above-mentioned (3) with mineral alkali, add again 1～9 part of etherifying agent, reaction generates oxidation-crosslinked-etherification starch, after add 2.5～5 parts of paste agents to carry out gelatinization, obtain starch adhesive major ingredient, described mineral alkali is sodium hydroxide or potassium hydroxide;
(5) preparation of auxiliary material: add 5～15 parts of remaining water and tougheners in another container, stir, under the temperature condition of 90 DEG C, allow toughener fully dissolve, and add 1～5 part of cyclizing agent, reaction generates six-ring complex compound, improve the water resistance of auxiliary material, then add 1～3 part of sanitas, 10～20 parts of siccative, stir;
(6) major ingredient mixes with auxiliary material: auxiliary material is added in major ingredient reactor, be uniformly mixed, and regulate PH7.5～7.8 with the aqueous citric acid solution of conditioning agent 5～20%, obtain environmental-friendly amylopectin composite adhesive for paper products.
Advantage of the present invention and positively effect:
1, the present invention, by adopting excessive urea as de-aldehyde agent, removes unnecessary free formaldehyde, removes murder by poisoning, and generates Precondensed UreaFormaldehyde Resin, can also strengthen bonding force and the water resistance of starch adhesive simultaneously.Again polyvinyl alcohol is made to cyclization, obtain water-fast six-ring compound, improve bonding force and the water resistance of product.Finally add that sanitas, siccative are compound to be obtained a kind of contained free formaldehyde and reach GB and allow the environmental-friendly amylopectin composite adhesive for paper products below 0.8%.
2, environmental-friendly amylopectin composite adhesive for paper products of the present invention and production method thereof, raw material is easy to get, output is high, production cost is low, steady quality, odorless, tasteless is nontoxic, the storage time is long; Technological operation is easy, produces, easily suitability for industrialized production without the three wastes.
3, strong, the quick-drying of the initial bonding strength of product of the present invention and bonding force, natural air drying fast, without wire drawing, run stupefied, the phenomenon such as stupefied of collapsing, the hardness of cardboard and deflection be good, the accumulation of salt in the surface soil, nonhygroscopic not, is a kind of environmental-friendly amylopectin composite adhesive for paper products.Be applicable to the production glue of domestic three kinds of corrugated cardboards, be also applicable to the glue of using of various fiber drums, paper tube, cement bag paper, furniture and interior decoration.Below in conjunction with accompanying drawing, the present invention is described in further detail.
Brief description of the drawings:
Fig. 1 is the technological process of production schematic diagram of composite adhesive
Embodiment:
Described in embodiment, content is only the basic explanation of the present invention under conceiving below, and according to the equivalent transformation that technical scheme of the present invention is done, all should belong to protection scope of the present invention.
Embodiment 1:
1, formula:
100 parts of tapioca (flour)s, 6 parts of oxidant hydrogen peroxide, 3 parts of oxidation terminator S-WATs, 4 parts, linking agent formaldehyde, 8 parts, complexing de-aldehyde agent and cyclizing agent urea, 5 parts of etherifying agent monochloroacetic acids, 3.5 parts, paste agent sodium hydroxide, 6 parts of toughener polyvinyl alcohol, 2 parts, sanitas zinc sulfate, 10 parts of siccative wilkinites, PH conditioning agent sulfuric acid, sodium hydroxide are by technique pH value required amount, 700 parts, water.
2, preparation technology:
First 230 parts, water is placed in to reactor, starts agitator, by 100 parts of tapioca (flour)s, add in reactor, stir the starch suspension of making 30%.
In starch suspension, add 6 parts of oxidant hydrogen peroxide, starch is carried out to oxidizing reaction, obtain after the Sumstar 190 of expection, after add 3 parts of oxidation terminator S-WATs, stop oxidizing reaction, hold over night, remove mother liquor, washing, add water and make again 30% Sumstar 190 suspension.
In above-mentioned Sumstar 190 suspension, add 10% aqueous sulfuric acid, regulate PH2, add again 4 parts, linking agent formaldehyde, then add 6 parts, complexing agent and de-aldehyde agent urea, make Sumstar 190 carry out crosslinking reaction, generate resin adhesive with unnecessary linking agent formaldehyde reaction, remove unnecessary formaldehyde, improved water resistance, the bonding force of starch adhesive.
The reaction solution of above-mentioned starch-resin cross-linked rubber stick is regulated PH12 by the aqueous sodium hydroxide solution of use 10%, then add 5 parts of etherifying agent monochloroacetic acids, and reaction generates oxidation-be cross-linked-etherification starch.Add again 3.5 parts, paste agent sodium hydroxide to carry out gelatinization, obtain starch adhesive major ingredient.
In the container that can heat at another, add 6 parts of remaining water, toughener polyvinyl alcohol, stir, under the temperature condition of 90 DEG C, allow toughener polyvinyl alcohol fully dissolve, and adding 2 parts, remaining urea, reaction generates six-ring complex compound, improves the water resistance of auxiliary material.Then add 2 parts, 2 sanitas zinc sulfate, 10 parts of siccative wilkinites, stir and make auxiliary material.
Auxiliary material is added in major ingredient reactor, be uniformly mixed, and regulate PH7.5 with the aqueous citric acid solution of conditioning agent 20%, obtain a kind of low cost, high-performance paper product environmental protection amylopectin composite adhesive.
This product odorless, tasteless is nontoxic, the storage time is long, initial bonding strength and bonding force is strong, quick-drying, natural air drying are fast, without wire drawing, run stupefied, the phenomenon such as stupefied of collapsing, cardboard is nonhygroscopic, the accumulation of salt in the surface soil, hardness and deflection are not good.
Embodiment 2:
1, formula:
110 parts of W-Gums, 3 parts of oxygenant clorox, 2.5 parts of oxidation terminator S-WATs, 6 parts, linking agent formaldehyde, 9 parts, complexing de-aldehyde agent and cyclizing agent urea, 7 parts of etherifying agent monochloroacetic acids, 4 parts, paste agent sodium hydroxide, 10 parts of toughener polyvinyl alcohol, 2.5 parts, sanitas zinc sulfate, 15 parts of siccative wilkinites, PH conditioning agent hydrochloric acid, sodium hydroxide are by technique pH value required amount, 750 parts, water.
2, preparation technology:
First 250 parts, water is placed in to reactor, starts agitator, 110 parts of W-Gums are added in reactor, stir the starch suspension of making 30%.
In starch suspension, add 3 parts of oxygenant clorox, starch is carried out to oxidizing reaction, obtain after the Sumstar 190 of expection, after add 2.5 parts of oxidation terminator S-WATs, do and mix even termination oxidizing reaction, hold over night, removes mother liquor, washing, adds water and makes 30% Sumstar 190 suspension again.
In above-mentioned Sumstar 190 suspension, add 10% aqueous hydrochloric acid to regulate PH1.5, add again 6 parts, linking agent formaldehyde, then add 6 parts, complexing agent and de-aldehyde agent urea, make Sumstar 190 be cross-linked complex reaction, and generate resin adhesive with unnecessary linking agent formaldehyde reaction, and remove unnecessary formaldehyde, improve water resistance, the bonding force of starch adhesive.
Above-mentioned starch-resin cross-linked rubber stick reaction solution is regulated PH12 by aqueous sodium hydroxide solution with 10%, then add 7 parts of etherifying agent monochloroacetic acids, and reaction generates oxidation-crosslinked-etherificate powder.Add again 4 parts, paste agent sodium hydroxide to carry out gelatinization, obtain starch adhesive major ingredient.
In the container that can heat at another, add 10 parts of remaining water, toughener polyvinyl alcohol, stir, under the temperature condition of 90 DEG C, allow toughener polyvinyl alcohol fully dissolve, and adding 3 parts, remaining urea, reaction generates six-ring complex compound, improves the water resistance of auxiliary material.Then 2.5 parts, sanitas zinc sulfate, 15 parts of siccative wilkinites, stir and make auxiliary material.
Auxiliary material is added in major ingredient reactor, be uniformly mixed, and regulate PH7.8 with the aqueous citric acid solution of conditioning agent 18%, obtain a kind of low cost, high-performance paper product environmental protection amylopectin composite adhesive.
This product odorless, tasteless is nontoxic, the storage time is long, initial bonding strength and bonding force is strong, quick-drying, natural air drying are fast, without wire drawing, run stupefied, the phenomenon such as stupefied of collapsing, cardboard is nonhygroscopic, the accumulation of salt in the surface soil, hardness and deflection are not good.
Embodiment 3:
1, formula:
70 parts of Semen Maydis powder starch, 40 parts of sorghum starches, 8 parts of oxygenant clorox, 6 parts, oxidation terminator Sulfothiorine, 5 parts of linking agent epoxy chloropropane, 4 parts of etherifying agent monochloroacetic acids, 5 parts, paste agent sodium hydroxide, 7 parts of toughener polyvinyl alcohol, 2.5 parts, cyclizing agent urea, 3 parts, sanitas zinc sulfate, 10 parts of stablizer wilkinites, 10 parts of bentonite, PH conditioning agent sulfuric acid, sodium hydroxide are by technique pH value required amount, 750 parts, water.
2, preparation technology:
First 250 parts, water is placed in to reactor, starts to do and mix device, 40 parts of 70 parts of Semen Maydis powder starch, high grain starch are added in reactor, do the starch suspension that mixes 30%.
In starch suspension, add 8 parts of oxygenant clorox, starch is carried out to oxidizing reaction, obtain after the Sumstar 190 of expection, after add 6 parts, oxidation terminator Sulfothiorine, do and mix even termination oxidizing reaction, hold over night, removes mother liquor, washing, adds water and makes 30% Sumstar 190 suspension again.
In above-mentioned Sumstar 190 suspension, add 10% aqueous sodium hydroxide solution adjusting PH9～12, then add 5 parts of linking agent epoxy chloropropane, make Sumstar 190 be cross-linked complex reaction, improve water resistance, the bonding force of starch adhesive.
With 10% aqueous sodium hydroxide solution, above-mentioned starch-resin cross-linked rubber stick reaction solution is regulated to PH12.5, then add 4 parts of etherifying agent monochloroacetic acids, reaction generates oxidation-crosslinked-etherificate powder.Add again 5 parts, paste agent sodium hydroxide to carry out gelatinization, obtain starch adhesive major ingredient.
In the container that can heat at another, add 7 parts of remaining water, toughener polyvinyl alcohol, stir, under the temperature condition of 90 DEG C, allow toughener polyvinyl alcohol fully dissolve, and adding 2.5 parts, cyclizing agent urea, reaction generates six-ring complex compound, improves the water resistance of auxiliary material.Then 10 parts of 3 parts, sanitas zinc sulfate, the siccative wilkinites, 10 parts of the bentonite that add, stir and make auxiliary material.
Auxiliary material is added in major ingredient reactor, be uniformly mixed, and regulate PH7.6 with the aqueous citric acid solution of conditioning agent 6%, obtain a kind of low cost, high-performance paper product environmental protection amylopectin composite adhesive.
This product odorless, tasteless is nontoxic, the storage time is long, initial bonding strength and bonding force is strong, quick-drying, natural air drying are fast, without wire drawing, run stupefied, the phenomenon such as stupefied of collapsing, cardboard is nonhygroscopic, the accumulation of salt in the surface soil, hardness and deflection are not good.
Embodiment 4:
1, formula:
80 parts of Tapioca Starch starch, 30 parts of high grain starch, 5.5 parts of oxygenant clorox, 5.5 parts of oxidation terminator S-WATs, 8 parts, linking agent formaldehyde, 14 parts, complexing de-aldehyde agent and cyclizing agent urea, 6 parts of etherifying agent monochloroacetic acids, 4.5 parts, paste agent potassium hydroxide, 12 parts of toughener polyvinyl alcohol, 2.5 parts, sanitas zinc sulfate, 18 parts of siccative wilkinites, PH conditioning agent sulfuric acid, potassium hydroxide are by technique pH value required amount, 750 parts, water.
2, preparation technology:
First 250 parts, water being placed in to reactor, starting agitator, is 80 parts by Tapioca Starch starch, and 30 parts of high grain starch add in reactor, stirs the starch suspension that becomes 30%.
In starch suspension, add 5.5 parts of oxygenant clorox, starch is carried out to oxidizing reaction, obtain after the Sumstar 190 of expection, after add 5.5 parts of oxidation terminator S-WATs, do and mix even termination oxidizing reaction, hold over night, removes mother liquor, washing, adds water and makes 30% Sumstar 190 suspension again.
In above-mentioned Sumstar 190 suspension, add 6% aqueous sulfuric acid, regulate PH2, add again 8 parts, linking agent formaldehyde, then add 9 parts, complexing agent and de-aldehyde agent urea, make Sumstar 190 be cross-linked complex reaction, and react generation resin adhesive with unnecessary linking agent, and remove unnecessary linking agent, improve water resistance, the bonding force of starch adhesive.
Above-mentioned starch-resin cross-linked rubber stick reaction solution is regulated PH13 by potassium hydroxide aqueous solution with 15%, then add 6 parts of etherifying agent monochloroacetic acids, and reaction generates oxidation-crosslinked-etherification starch.Add again 4.5 parts, paste agent potassium hydroxide to carry out gelatinization, obtain starch adhesive major ingredient.
In the container that can heat at another, add 12 parts of remaining water and tougheners, stir, under the temperature condition of 90 DEG C, allow toughener fully dissolve, and add 6 parts, remaining urea, reaction generates six-ring complex compound, improves the water resistance of auxiliary material.Then add 2.5 parts, sanitas zinc sulfate, 18 parts of siccative wilkinites, stir and make auxiliary material.
Auxiliary material is added in major ingredient reactor, be uniformly mixed, and regulate PH7.7 with the aqueous citric acid solution of conditioning agent 20%, obtain a kind of low cost, high-performance paper product environmental protection amylopectin composite adhesive.
This product odorless, tasteless is nontoxic, the storage time is long, initial bonding strength and bonding force is strong, quick-drying, natural air drying are fast, without wire drawing, run stupefied, the phenomenon such as stupefied of collapsing, cardboard is nonhygroscopic, the accumulation of salt in the surface soil, hardness and deflection are not good.
Embodiment 5:
1, formula:
50 parts of Tapioca Starch starch, 50 parts of W-Gums, 7 parts of oxidant hydrogen peroxide, 5 parts of oxidation terminator S-WATs, 9 parts, linking agent formaldehyde, 15 parts, complexing de-aldehyde agent and cyclizing agent urea, 8 parts of etherifying agent monochloroacetic acids, 5 parts, paste agent potassium hydroxide, 8 parts of toughener polyvinyl alcohol, 2.5 parts, sanitas zinc sulfate, 18 parts of siccative wilkinites, PH conditioning agent sulfuric acid, potassium hydroxide are by technique pH value required amount, 750 parts, water.
2, preparation technology:
First 230 parts, water being placed in to reactor, starting agitator, is 50 parts by Tapioca Starch starch, and 50 parts of W-Gums, add in reactor, stirs the starch suspension that becomes 30%.
In starch suspension, add 7 parts of oxidant hydrogen peroxide, starch is carried out to oxidizing reaction, obtain after the Sumstar 190 of expection, after add 5.5 parts of oxidation terminator S-WATs, the termination oxidizing reaction that stirs, hold over night, remove mother liquor, washing, add water and make again 30% Sumstar 190 suspension.
In above-mentioned Sumstar 190 suspension, add 6% aqueous sulfuric acid, regulate PH2, add again 8 parts, linking agent formaldehyde, then add 9 parts, complexing agent and de-aldehyde agent urea, make Sumstar 190 be cross-linked complex reaction, and react generation resin adhesive with unnecessary linking agent, and remove unnecessary linking agent, improve water resistance, the bonding force of starch adhesive.
Above-mentioned starch-resin cross-linked rubber stick reaction solution is regulated PH13 by potassium hydroxide aqueous solution with 15%, then add 8 parts of etherifying agent monochloroacetic acids, and reaction generates oxidation-crosslinked-etherification starch.Add again 5 parts, paste agent potassium hydroxide to carry out gelatinization, obtain starch adhesive major ingredient.
In the container that can heat at another, add 8 parts of remaining water and tougheners, stir, under the temperature condition of 90 DEG C, allow toughener fully dissolve, and add 6 parts, remaining urea, reaction generates six-ring complex compound, improves the water resistance of auxiliary material.Then add 3 parts, sanitas zinc sulfate, 16 parts of siccative bentonite, stir and make auxiliary material.
Auxiliary material is added in major ingredient reactor, is uniformly mixed, and regulate PH7.7 with the aqueous citric acid solution of conditioning agent 20%,
Obtain a kind of low cost, high-performance paper product environmental protection amylopectin composite adhesive.
This product odorless, tasteless is nontoxic, the storage time is long, initial bonding strength and bonding force is strong, quick-drying, natural air drying are fast, without wire drawing, run stupefied, the phenomenon such as stupefied of collapsing, cardboard is nonhygroscopic, the accumulation of salt in the surface soil, hardness and deflection are not good.
Claims (2)
1. an environmental-friendly amylopectin composite adhesive for paper products, is characterized in that: the raw material by following parts by weight is made: 90～110 parts of starch, 2～9 parts, oxygenant, 2～9 parts of oxidation terminators, 1～10 part of linking agent, 2～20 parts of linking agent terminators, 1～9 part of etherifying agent, 2.5～5 parts of paste agents, 5～15 parts of tougheners, 1～5 part of cyclizing agent, 1～3 part of sanitas, 10～20 parts of siccative, pH adjusting agent is by technique pH value required amount, 500～750 parts, water;
Described starch adopts wherein a kind of or two kinds of above mixtures of potato starch and cereal starch;
Described oxygenant adopts the wherein a kind of or mixture of two kinds of hydrogen peroxide, clorox;
Described oxidation terminator adopts wherein a kind of or more than one mixture of S-WAT, sodium thionyl, Sulfothiorine;
Described linking agent adopts formaldehyde or epoxy chloropropane;
Described linking agent terminator adopts urea;
Described etherifying agent adopts monochloroacetic acid or sodium monochloracetate;
Described toughener adopts polyvinyl alcohol;
Described cyclizing agent adopts urea;
Described sanitas adopts zinc sulfate, zinc chloride and the wherein mixture of one or two or more kinds of Sodium Benzoate;
Described siccative adopts wilkinite;
Described pH adjusting agent adopts mineral alkali, mineral acid or organic acid: described mineral alkali adopts sodium hydroxide or potassium hydroxide; Described mineral acid adopts sulfuric acid, hydrochloric acid, phosphoric acid or nitric acid; Described organic acid adopts the aqueous citric acid solution of 5-20%.
2. the production method of composite adhesive as claimed in claim 1, is characterized in that: processing step is:
(1) preparation of starch suspension: first 200～300 parts, water is placed in to reactor, starts agitator, 90～110 parts of starch are added in reactor, stir the starch suspension of making 30%;
(2) oxidizing reaction: add 2～9 parts of oxygenant clorox in starch suspension, starch is carried out to oxidizing reaction, obtain after the Sumstar 190 of expection, add 2～9 parts of oxidation terminators, stop oxidizing reaction, through leaving standstill, filter, washing, adds water and makes 30% Sumstar 190 suspension again;
(3) crosslinking reaction: in above-mentioned (2) Sumstar 190 suspension, add inorganic acid for adjusting pH 1.5～2, add again 1～10 part of linking agent, then add 2～20 parts, linking agent terminator urea, make Sumstar 190 carry out crosslinking reaction, described mineral acid is sulfuric acid, hydrochloric acid, phosphoric acid or nitric acid;
(4) etherification reaction: the starch reaction liquid pH 12～13 that regulates above-mentioned (3) with mineral alkali, add again 1～9 part of etherifying agent, reaction generates oxidation-crosslinked-etherification starch, add again 2.5～5 parts of paste agents to carry out gelatinization, obtain starch adhesive major ingredient, described mineral alkali is sodium hydroxide or potassium hydroxide;
(5) preparation of auxiliary material: add 5～15 parts of remaining water and tougheners in another container, stir, under the temperature condition of 90 DEG C, allow toughener fully dissolve, and add 1～5 part of cyclizing agent, reaction generates six-ring complex compound, then adds 1～3 part of sanitas, 10～20 parts of siccative, stirs and makes auxiliary material;
(6) major ingredient mixes with auxiliary material: auxiliary material is added in major ingredient reactor, be uniformly mixed, and regulate pH 7.5～7.8 with the aqueous citric acid solution of pH adjusting agent 5-20%, obtain environmental-friendly amylopectin composite adhesive for paper products.
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| CN200910114681.3A CN101760149B (en) | 2009-12-29 | 2009-12-29 | Environmental-friendly amylopectin composite adhesive for paper products and production method thereof |
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| CN111574932A (en) * | 2020-07-08 | 2020-08-25 | 江门市豈铭实业有限公司 | Environment-friendly modified starch adhesive and preparation method thereof |
| CN115141576B (en) * | 2022-07-18 | 2023-09-26 | 杭州纸友科技有限公司 | Preparation method and application of starch-based material for adhesive |
| CN117966518B (en) * | 2024-02-24 | 2024-07-09 | 东莞市益和纸制品有限公司 | Pressure-resistant anti-deformation corrugated board and preparation process thereof |
Citations (1)
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| CN101191043A (en) * | 2006-11-20 | 2008-06-04 | 兰州大学 | Method for preparing urea-formaldehyde resin adhesive |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101191043A (en) * | 2006-11-20 | 2008-06-04 | 兰州大学 | Method for preparing urea-formaldehyde resin adhesive |
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| 卢秋晓等.抗氧化铝箔衬纸复合用淀粉胶的制备研究.《江西化工》.2005,(第1期),第113页1.1. * |
| 杨百勤等.速干高强淀粉粘合剂的制备.《西北轻工业学院学报》.2002,第20卷(第5期),第67页2.6.6、2.6.8、第68页表1. * |
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| CN101760149A (en) | 2010-06-30 |
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