CN104194671A - Adhesive and preparation method thereof - Google Patents
Adhesive and preparation method thereof Download PDFInfo
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- CN104194671A CN104194671A CN201410421940.8A CN201410421940A CN104194671A CN 104194671 A CN104194671 A CN 104194671A CN 201410421940 A CN201410421940 A CN 201410421940A CN 104194671 A CN104194671 A CN 104194671A
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Abstract
The invention relates to an adhesive and a preparation method thereof. The adhesive is prepared from the following components in percentage by weight: 6-10% of starch, 5-10% of polyvinyl alcohol, 0-10% of China clay, 3-6% of polyvinyl acetate, 0.2-0.5% of bactericide and 0.2-0.5% of preservative, 0.05-0.3% of dispersant, 0.005-0.003% of a cross-linking agent and 63.7-85.5% of water. The preparation method comprises the following steps: selecting raw materials; processing polyvinyl alcohol; preparing starch mud and an adhesive initial liquid; stirring the prepared adhesive initial liquid to cool to 60DEG C; then, adding China clay and polyvinyl acetate; continuously stirring; and finally, adding the dispersant, the crosslinking agent, the bactericide and the preservative at one time, and stirring for 20-30 minutes. The adhesive provided by the invention has the beneficial effects that the adhesive is free from pollution and harm to human health, low in cost, high in strength of a paper tube, and good in wear and water resistances; the paper tube can be recycled over three times, the error of the paper tube is small, and problems of elongation strain and the like are avoided.
Description
Technical field
The invention belongs to sizing agent technical field, particularly relate to a kind of sizing agent and preparation method thereof.
Background technology
Under current more and more fierce market competition, constantly reduce production costs and be the only way which must be passed that an enterprise can Sustainable Development:
1,, along with China's expanding economy, paper tube is at daily necessities, weaving, and light industry, packaging, the demand in the fields such as leather is increasing, and quality requirements to paper tube, as resistance to compression, thickness, elongations etc. require more and more stricter.As the resistance to compression of present large high-speed running paper machine to paper tube and wear resistance require quite highly, the thick resistance to compression of paper tube 15mm must be at 2500kn/10cm, and the thick resistance to compression of 13mm must be at 1800kn/10cm, and at least reuse is once for every paper tube.This just has higher requirement to the critical materials paper tube sizing agent of preparing paper tube.
2, the conventional paper tube adhesive of tradition mainly contains gelatin, pasted starch or treated starch, formaldehyde polyvinyl acetal liquid, Vinyl Acetate Copolymer fat liquor etc.Wherein gelatin and starch based sizing agent are because cohesive strength is low, and resting period is short and inapplicable; And that the shortcoming of polyvinyl alcohol maximum is exactly water resistance is poor, easily cause distortion and the elongation of paper tube, and As time goes on the compressive strength of paper tube can reduce, the front several sizing agents of the water tolerance of Vinyl Acetate Copolymer fat liquor all will be got well, but initial bonding strength is low, after bonding, compressive strength and the creep resistance of paper tube are poor.
3, the paper machine of existing current domestic large high-speed running is all at the macromolecule polymeric material that uses aqueous polyvinyl acetate emulsion, but price is higher and not environmental protection all, in order to make glue there is good initial bonding strength and be easy to deposit, businessman can add the toxic substances such as a large amount of aldehyde materials and Polybrominated biphenyl, not only on-the-spot employee's health can be damaged and can be caused the pollution of environment.
At present, the farinaceous paper tube adhesive that market is used, solid content is all between 50%-55%, and paper tube ultimate compression strength with high costs and that make is poor, and paper tube is not water-fast, and moisture-sensitive is flexible.
Summary of the invention
The object of this invention is to provide a kind of sizing agent.
Another object of the present invention is to provide a kind of preparation method of sizing agent.
The technical problem to be solved in the present invention is: the farinaceous paper tube adhesive that existing market is used, and solid content is all between 50%-55%, and paper tube ultimate compression strength with high costs and that make is poor, and paper tube is not water-fast, the shortcoming that moisture-sensitive is flexible.
The present invention takes to such an extent that technical scheme is in order to solve its technical problem:
A kind of sizing agent, it is characterized in that: by weight percentage, each component ratio is, starch 6%-10%, polyvinyl alcohol 5%-10%, china clay 0-10%, polyvinyl acetate (PVA) 3%-6%, sterilant and mould inhibitor be 0.2%-0.5% respectively, dispersion agent 0.05%-0.3%, linking agent 0.005%-0.003%, water 63.7%-85.5%.
The basicity of described polyvinyl alcohol is 75-80, and the particle diameter of described china clay is 2 microns;
Described sterilant refers to acid amide fungicides or easily matches saliva purine ketone;
Described mould inhibitor refers to Sodium Benzoate;
Described dispersion agent refers to Xylo-Mucine and carboxymethyl cellulose;
Described linking agent refers to oxalic dialdehyde.
A preparation method for sizing agent, is characterized in that: its concrete steps are as follows:
1) confirmation of selecting and fill a prescription of raw material
By weight percentage, each component ratio is, starch 6%-10%, polyvinyl alcohol 5%-10%, china clay 0-10%, polyvinyl acetate (PVA) 3%-6%, sterilant and mould inhibitor be 0.2%-0.5% respectively, dispersion agent 0.05%-0.3%, linking agent 0.005%-0.003%, water 63.7%-85.5%;
2) polyvinyl alcohol is brewed
Polyvinyl alcohol dry powder is added gradually to the dissolving tank being filled with water, add-on need be calculated by the concentration 8%-13% with the quality of water and after dissolving, after polyvinyl alcohol has added, not heated and stirred 10-20min, needs before dissolving to invade bubble 10-20min with cold water, invades bubble and dissolves afterwards more even, then pass into be steam heated to 70-75 DEG C stop ventilation, temperature can rise to 80-90 DEG C automatically, is stirred to abundant dissolving, and whether sampling is seen it and fully dissolved and survey admittedly and contain;
3) preparation of starch slurry
Starch dry powder is added to the storage tank that fills water, addition need calculate with dissolving rear mud solid content 38%-45% with the quality of water, and starch need slowly add, and adds while stirring, ensures not sinking to the bottom of starch; After starch has added, solid content is surveyed in sampling;
4) the just preparation of liquid of sizing agent
The polyvinyl alcohol solution preparing is evacuated to pulp digester; Temperature remains on 75-90 DEG C and also continues not stop to continue to stir, then slowly add gelatinization in the pulp digester that fills polyvinyl alcohol solution by preparing starch slurry, starch needs repeatedly to add on a small quantity, prevent that starch pasting inequality from causing large micelle to affect glue quality, in gelatinization process, temperature remains on 75-85 DEG C, treat the follow-up continuous insulated and stirred 20-30min of its complete gelatinization, then sampling survey solid content is 14%-19%, and viscosity is 800cps-1200cps;
5) just liquid stirring of the sizing agent preparing is cooled to 50 DEG C-60 DEG C, then adds china clay and polyvinyl acetate (PVA), continue to stir, add for the last time dispersion agent, linking agent, sterilant and mould inhibitor, stir 20-30min;
6) now the first liquid of sizing agent is successfully prepared, and sampling and testing viscosity contains admittedly, and viscosity need be at 1000cps-1500cps, and solid content is at 25%-32%, and pH is between 7-8, ash content 0%-10%.
While needing upper limit 1500cps as production plant viscosity, can in the time that completing, production add Xylo-Mucine and carboxymethyl cellulose (6) carrys out adjusting viscosity.It is for subsequent use that production plant is delivered in barrelling.
Main innovate point of the present invention with the white glue advantage of comparing in present market is: the present invention is by processing type material starch in sizing agent, adopt gelatinization medium different from the past, the gluing performance of starch is improved greatly, intensity and wear-resisting and waterproof after sizing agent film forming are well improved, glued membrane bonding paper is more firm, make paper tube yield high, loss is little.Changing sizing agent employing starch is main raw material, and polyvinyl alcohol and china clay are auxiliary material preparation, and raw material is all environment-friendly materials, can not cause any pollution to environment, has also ensured employee's physical and mental health in production plant.In existing market, be 3.5-5.5 with white glue pH, for strongly-acid white glue, corrodibility to equipment is stronger, greatly shorten the work-ing life of equipment, and in white glue, add more objectionable impurities, as formaldehyde etc., employee in process of production contact meeting causes and stimulates injury skin, causes the occupational diseases such as some tetter.This sizing agent is also better than outsourcing white glue at the product of making comprehensively, make the resistance to compression of paper tube hoop and be better than the paper tube that common white glue is produced, and paper tube is not yielding.Novel sizing agent is with low cost, is the present half of market white glue, the half (solid content of the conventional treated starch in existing market is all at 50%-55%, and cost is larger) of the mongolicum Turcz. with Modified Starch Adhesive cost often having for existing market.The present invention is a large breakthrough in sizing agent field, has reduced the consumption of the energy, has protected environment.
This sizing agent uses environment-friendly materials preparation, can not damage environment and employee's physical and mental health, and with low cost.
Sizing agent of the present invention is contained between 25%-30% admittedly, and the with low cost and paper tube intensity made is higher than use
The paper tube that novel polymeric material is made.Wear-resisting and waterproof character is very good, and paper tube all can reuse more than three times, and paper tube error is little, without problems such as extension strains.
Embodiment
A kind of sizing agent, it is characterized in that: by weight percentage, each component ratio is, starch 6%-10%, polyvinyl alcohol 5%-10%, china clay 0-10%, polyvinyl acetate (PVA) 3%-6%, sterilant and mould inhibitor be 0.2%-0.5% respectively, dispersion agent 0.05%-0.3%, linking agent 0.005%-0.003%, water 63.7%-85.5%.
The basicity of described polyvinyl alcohol is 75-80, and the particle diameter of described china clay is 2 microns;
Described sterilant refers to acid amide fungicides or easily matches saliva purine ketone;
Described mould inhibitor refers to Sodium Benzoate;
Described dispersion agent refers to Xylo-Mucine and carboxymethyl cellulose;
Described linking agent refers to oxalic dialdehyde.
Further to illustrate preparation method of the present invention with above-mentioned raw materials in the mode of specific embodiment below.
Embodiment 1:
1) confirmation of selecting and fill a prescription of raw material
By weight percentage, each component ratio is, starch 6%, polyvinyl alcohol 5%, china clay 5%, polyvinyl acetate (PVA) 3%, sterilant and mould inhibitor respectively 0.2%, dispersion agent 0.05%, linking agent 0.005%, water 63.7%;
2) polyvinyl alcohol is brewed
Polyvinyl alcohol dry powder is added gradually to the dissolving tank being filled with water, add-on need the concentration 8% with the quality of water and after dissolving be calculated, after polyvinyl alcohol has added, not heated and stirred 10min, needs before dissolving to invade bubble 10min with cold water, invades bubble and dissolves afterwards more even, then pass into be steam heated to 70 DEG C stop ventilation, temperature can rise to 80 DEG C automatically, is stirred to abundant dissolving, and whether sampling is seen it and fully dissolved and survey admittedly and contain;
3) preparation of starch slurry
Starch dry powder is added to the storage tank that fills water, addition need calculate with dissolving rear mud solid content 38% with the quality of water, and starch need slowly add, and adds while stirring, ensures not sinking to the bottom of starch; After starch has added, solid content is surveyed in sampling;
4) the just preparation of liquid of sizing agent
The polyvinyl alcohol solution preparing is evacuated to pulp digester; Temperature remains on 75 DEG C and also continues not stop to continue to stir, then slowly add gelatinization in the pulp digester that fills polyvinyl alcohol solution by preparing starch slurry, starch needs repeatedly to add on a small quantity, prevent that starch pasting inequality from causing large micelle to affect glue quality, in gelatinization process, temperature remains on 75 DEG C, treat the follow-up continuous insulated and stirred 20min of its complete gelatinization, then sampling survey solid content is 14%, and viscosity is 800cps;
5) just liquid stirring of the sizing agent preparing is cooled to 60 DEG C, then adds china clay and polyvinyl acetate (PVA), continue to stir, add for the last time dispersion agent, linking agent, sterilant and mould inhibitor, stir 20-30min;
6) now the first liquid of sizing agent is successfully prepared, and sampling and testing viscosity contains admittedly, and viscosity need be at 1000cps, and solid content is at 25%-32%, and pH is 7.6, ash content 4.8%.
Embodiment 2:
1) confirmation of selecting and fill a prescription of raw material
By weight percentage, each component ratio is, starch 8%, polyvinyl alcohol 7.5%, china clay 7%, polyvinyl acetate (PVA) 5%, sterilant and mould inhibitor respectively 0.35%, dispersion agent 0.15%, linking agent 0.004%, water 73.3%;
2) polyvinyl alcohol is brewed
Polyvinyl alcohol dry powder is added gradually to the dissolving tank being filled with water, add-on need the concentration 11% with the quality of water and after dissolving be calculated, after polyvinyl alcohol has added, not heated and stirred 15min, needs before dissolving to invade bubble 15min with cold water, invades bubble and dissolves afterwards more even, then pass into be steam heated to 73 DEG C stop ventilation, temperature can rise to 85 DEG C automatically, is stirred to abundant dissolving, and whether sampling is seen it and fully dissolved and survey admittedly and contain;
3) preparation of starch slurry
Starch dry powder is added to the storage tank that fills water, addition need calculate with dissolving rear mud solid content 40% with the quality of water, and starch need slowly add, and adds while stirring, ensures not sinking to the bottom of starch; After starch has added, solid content is surveyed in sampling;
4) the just preparation of liquid of sizing agent
The polyvinyl alcohol solution preparing is evacuated to pulp digester; Temperature remains on 75-90 DEG C and also continues not stop to continue to stir, then slowly add gelatinization in the pulp digester that fills polyvinyl alcohol solution by preparing starch slurry, starch needs repeatedly to add on a small quantity, prevent that starch pasting inequality from causing large micelle to affect glue quality, in gelatinization process, temperature remains on 80 DEG C, treat the follow-up continuous insulated and stirred 25min of its complete gelatinization, then sampling survey solid content is 17%, and viscosity is 1000cps;
5) just liquid stirring of the sizing agent preparing is cooled to 60 DEG C, then adds china clay and polyvinyl acetate (PVA), continue to stir, add for the last time dispersion agent, linking agent, sterilant and mould inhibitor, stir 25min;
6) now the first liquid of sizing agent is successfully prepared, and sampling and testing viscosity contains admittedly, and viscosity need be at 1300cps, and solid content is 7.5 at 28%, pH, ash content 7.1%.
Embodiment 3:
1) confirmation of selecting and fill a prescription of raw material
By weight percentage, each component ratio is, starch 10%, polyvinyl alcohol 10%, china clay 10%, polyvinyl acetate (PVA) 6%, sterilant and mould inhibitor respectively 0.5%, dispersion agent 0.3%, linking agent 0.003%, water 85.5%;
2) polyvinyl alcohol is brewed
Polyvinyl alcohol dry powder is added gradually to the dissolving tank being filled with water, add-on need the concentration 13% with the quality of water and after dissolving be calculated, after polyvinyl alcohol has added, not heated and stirred 20min, needs before dissolving to invade bubble 20min with cold water, invades bubble and dissolves afterwards more even, then pass into be steam heated to 75 DEG C stop ventilation, temperature can rise to 90 DEG C automatically, is stirred to abundant dissolving, and whether sampling is seen it and fully dissolved and survey admittedly and contain;
3) preparation of starch slurry
Starch dry powder is added to the storage tank that fills water, addition need calculate with dissolving rear mud solid content 45% with the quality of water, and starch need slowly add, and adds while stirring, ensures not sinking to the bottom of starch; After starch has added, solid content is surveyed in sampling;
4) the just preparation of liquid of sizing agent
The polyvinyl alcohol solution preparing is evacuated to pulp digester; Temperature remains on 90 DEG C and also continues not stop to continue to stir, then slowly add gelatinization in the pulp digester that fills polyvinyl alcohol solution by preparing starch slurry, starch needs repeatedly to add on a small quantity, prevent that starch pasting inequality from causing large micelle to affect glue quality, in gelatinization process, temperature remains on 85 DEG C, treat the follow-up continuous insulated and stirred 30min of its complete gelatinization, then sampling survey solid content is 19%, and viscosity is 1200cps;
5) just liquid stirring of the sizing agent preparing is cooled to 55 DEG C, then adds china clay and polyvinyl acetate (PVA), continue to stir, add for the last time dispersion agent, linking agent, sterilant and mould inhibitor, stir 30min;
6) now the first liquid of sizing agent is successfully prepared, and sampling and testing viscosity contains admittedly, and viscosity need be at 1500cps, and solid content is 7.5 at 32%, pH, ash content 10%.
Claims (7)
1. a sizing agent, it is characterized in that: by weight percentage, each component ratio is, starch 6%-10%, polyvinyl alcohol 5%-10%, china clay 0-10%, polyvinyl acetate (PVA) 3%-6%, sterilant and mould inhibitor be 0.2%-0.5% respectively, dispersion agent 0.05%-0.3%, linking agent 0.005%-0.003%, water 63.7%-85.5%.
2. sizing agent according to claim 1, is characterized in that: the basicity of described polyvinyl alcohol is 75-80, and the particle diameter of described china clay is 2 microns.
3. sizing agent according to claim 1, is characterized in that: described sterilant refers to acid amide fungicides or easily matches saliva purine ketone.
4. sizing agent according to claim 1, is characterized in that: described mould inhibitor refers to Sodium Benzoate.
5. sizing agent according to claim 1, is characterized in that: described dispersion agent refers to Xylo-Mucine or carboxymethyl cellulose.
6. sizing agent according to claim 1, is characterized in that: described linking agent refers to oxalic dialdehyde.
7. a preparation method for sizing agent, is characterized in that: its concrete steps are as follows:
1) confirmation of selecting and fill a prescription of raw material
By weight percentage, each component ratio is, starch 6%-10%, polyvinyl alcohol 5%-10%, china clay 0-10%, polyvinyl acetate (PVA) 3%-6%, sterilant and mould inhibitor be 0.2%-0.5% respectively, dispersion agent 0.05%-0.3%, linking agent 0.005%-0.003%, water 63.7%-85.5%;
2) polyvinyl alcohol is brewed
Polyvinyl alcohol dry powder is added gradually to the dissolving tank being filled with water, add-on need be calculated by the concentration 8%-13% with the quality of water and after dissolving, after polyvinyl alcohol has added, not heated and stirred 10-20min, needs before dissolving to invade bubble 10-20min with cold water, invades bubble and dissolves afterwards more even, then pass into be steam heated to 70-75 DEG C stop ventilation, temperature can rise to 80-90 DEG C automatically, is stirred to abundant dissolving, and whether sampling is seen it and fully dissolved and survey admittedly and contain;
3) preparation of starch slurry
Starch dry powder is added to the storage tank that fills water, addition need calculate with dissolving rear mud solid content 38%-45% with the quality of water, and starch need slowly add, and adds while stirring, ensures not sinking to the bottom of starch; After starch has added, solid content is surveyed in sampling;
4) the just preparation of liquid of sizing agent
The polyvinyl alcohol solution preparing is evacuated to pulp digester; Temperature remains on 75-90 DEG C and also continues not stop to continue to stir, then slowly add gelatinization in the pulp digester that fills polyvinyl alcohol solution by preparing starch slurry, starch needs repeatedly to add on a small quantity, prevent that starch pasting inequality from causing large micelle to affect glue quality, in gelatinization process, temperature remains on 80-90 DEG C, treat the follow-up continuous insulated and stirred 20-30min of its complete gelatinization, then sampling survey solid content is 14%-19%, and viscosity is 800cps-1200cps;
5) just liquid stirring of the sizing agent preparing is cooled to 50 DEG C-60 DEG C, then adds china clay and polyvinyl acetate (PVA), continue to stir, add for the last time dispersion agent, linking agent, sterilant and mould inhibitor, stir 20-30min;
6) now sizing agent is successfully prepared, and sampling and testing viscosity contains admittedly, and viscosity need be at 1000cps-1500cps, and solid content is at 25%-32%, and pH is between 7-8, ash content 0%-10%.
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Cited By (9)
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| CN105462520A (en) * | 2015-12-07 | 2016-04-06 | 安徽强英鸭业集团有限公司 | Egg repair liquid for breeding eggs and preparation method of egg repair liquid |
| CN105602482A (en) * | 2016-03-29 | 2016-05-25 | 吴肖颜 | Efficient wallpaper powder |
| CN107556946A (en) * | 2017-09-25 | 2018-01-09 | 常州市绿意管道有限公司 | A kind of special paper tube adhesive of paper |
| CN107868631A (en) * | 2017-11-23 | 2018-04-03 | 江门市丁氏粘合剂实业有限公司 | A kind of environment-friendly wood assembling glue and preparation method thereof |
| CN107892888A (en) * | 2017-11-23 | 2018-04-10 | 江门市丁氏粘合剂实业有限公司 | A kind of high tenacity based Wood Adhesives and preparation method thereof |
| CN107916081A (en) * | 2017-11-14 | 2018-04-17 | 汪逸凡 | A kind of preparation method of foam aluminum sandwich timber-used penertration resistance adhesive |
| CN107936875A (en) * | 2017-11-23 | 2018-04-20 | 江门市丁氏粘合剂实业有限公司 | A kind of based Wood Adhesives and preparation method thereof |
| CN108641618A (en) * | 2018-05-04 | 2018-10-12 | 宁国市千洪电子有限公司 | A kind of insulating tape |
| CN108727994A (en) * | 2017-04-19 | 2018-11-02 | 宿豫区绿茵铅笔厂 | A kind of paper tube pencil glue |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105462520A (en) * | 2015-12-07 | 2016-04-06 | 安徽强英鸭业集团有限公司 | Egg repair liquid for breeding eggs and preparation method of egg repair liquid |
| CN105602482A (en) * | 2016-03-29 | 2016-05-25 | 吴肖颜 | Efficient wallpaper powder |
| CN108727994A (en) * | 2017-04-19 | 2018-11-02 | 宿豫区绿茵铅笔厂 | A kind of paper tube pencil glue |
| CN107556946A (en) * | 2017-09-25 | 2018-01-09 | 常州市绿意管道有限公司 | A kind of special paper tube adhesive of paper |
| CN107916081A (en) * | 2017-11-14 | 2018-04-17 | 汪逸凡 | A kind of preparation method of foam aluminum sandwich timber-used penertration resistance adhesive |
| CN107868631A (en) * | 2017-11-23 | 2018-04-03 | 江门市丁氏粘合剂实业有限公司 | A kind of environment-friendly wood assembling glue and preparation method thereof |
| CN107892888A (en) * | 2017-11-23 | 2018-04-10 | 江门市丁氏粘合剂实业有限公司 | A kind of high tenacity based Wood Adhesives and preparation method thereof |
| CN107936875A (en) * | 2017-11-23 | 2018-04-20 | 江门市丁氏粘合剂实业有限公司 | A kind of based Wood Adhesives and preparation method thereof |
| CN108641618A (en) * | 2018-05-04 | 2018-10-12 | 宁国市千洪电子有限公司 | A kind of insulating tape |
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Application publication date: 20141210 |
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