CN101285285A - Preparing process of composite sound absorbing paper - Google Patents
Preparing process of composite sound absorbing paper Download PDFInfo
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- CN101285285A CN101285285A CNA2008100179035A CN200810017903A CN101285285A CN 101285285 A CN101285285 A CN 101285285A CN A2008100179035 A CNA2008100179035 A CN A2008100179035A CN 200810017903 A CN200810017903 A CN 200810017903A CN 101285285 A CN101285285 A CN 101285285A
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Abstract
The invention provides a technique for making composite sound-absorbing paper. The method comprises the following steps that: the leather waste materials generated in the leather industry are pre-processed to be washed by water, to remove oil and the fishy smell firstly; secondly, according to certain concentration, the pulping process is performed by the paper-making method in a PEI pulping machine to obtain scattered collagenous fibers; next, the collagenous fibers and bleached softwood pulp are mixed according to certain ratio, a retention and filtration aid and fillings are added, the paper is made in a paper sheet forming machine. The sound-absorbing paper has good function of absorbing sound and reducing noise; the average sound absorption is more than 0.5; moreover, the sound-absorbing material also has good flame retardant property and waterproof property. The technique ensures that the valuable resource of the leather excess material can be utilized reasonably and effectively, provides research train of thought and method for the deep exploitation and utilization of the leather excess material, the application of collagenous fibers and plant fibers to the composite material field, and the cross-over study of the paper-making industry, the leather industry and the acoustic material fields, and has important theoretical significance and particle application value.
Description
Technical field
The invention belongs to the crossing domain of papermaking, leather and acoustical material, be specifically related to a kind of technology of utilizing collagenous fibres and string to prepare composite sound absorbing paper.
Background technology
The annual leather solid waste that produces of China reaches more than 140 ten thousand tons, contains more than 50 ten thousand tons of chromium solid waste.These solids main components are collagenous fibres, if these solid waste reasonably can not be handled, the meeting serious environment pollution also can cause a large amount of wastes of collagenous fibres protein on the other hand on the one hand.Collagenous fibres have micro-elasticity and very high tensile strength, and also have character such as high-wearing feature, thermal insulation, sound absorption properties and the pliability etc. of many uniquenesses, and can be used as a kind of functional material adds in the page, the paper that exploitation has specific function.
Along with the development of modern industry and communications and transportation cause and the enhancing of environmental consciousness, people are also more and more higher to the requirement of acoustic environment, and the noise pollution problem has become global problem.Absorbing sound and lowering noise develops gradually becomes the important topic that solution is badly in need of in a relevant high-tech, environment and human coordinated development, and the structure of absorbing sound and lowering noise new material, acoustic characteristic and application thereof are important topics that relates to multidisciplinary intersection.Simultaneously, society is the gesture of rapid growth to the demand of sound-absorbing material, also the performance of sound-absorbing material has been proposed higher more requirement simultaneously.Sound-absorbing material must be realized from single sound absorption function of past to multi-functional transformations such as high acoustic absorption, ornamental, economy and the feature of environmental protection.Using more sound-absorbing material at present has: inorfil, synthetic fiber, foamed plastics and metal fibre class material.This class material has himself advantage as sound-absorbing material, but that many materials also exist is harmful, is difficult for degraded, is difficult for shortcomings such as machine-shaping.
Summary of the invention
The object of the present invention is to provide a kind of preparation technology simple, and when guaranteeing paper physical property, can give the preparation technology that paper has the composite sound absorbing paper of good sound absorption anti-acoustic capability again.
For achieving the above object, the technical solution used in the present invention is:
1) at first, the leather waste that produces in the leather industry is passed through washing, de-oiling, goes raw meat to handle, be cut into behind the fritter of 4mm * 4mm with water by 8-15: 100 mass ratio mixes, utilize the method for the papermaking 3000-6000 that in the PFI fiberizer, pulls an oar to change then, washing is sieved, and obtains the collagenous fibres slurry;
2) then the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 2-4 hour in water, 30-40 ° of SR then pulls an oar in beater;
3) with mass percent be the collagen fiber pulp of 20-50% again, the bleaching needle-point leaf pulp of 40-70%, the vermiculite power that 10-20% crosses 100 mesh sieves mixes, and the stream filter aid cationic polyacrylamide (CPAM) that helps of adding mixed slurry mass percent 0.02% makes mixed slurry;
4) at last mixed slurry is discongested at the standing paste sample and discongest 1000 in the device and change, adjusting concentration is 0.35-0.75g/L, copy sheet in sheet forming apparatus, the l Water Paper page or leaf squeezes 30-120s under hydraulic press 4Mpa, and 90-105 ℃ obtained composite sound absorbing paper in following vacuumize 2-4 minute.
The present invention makes full use of the sound absorption qualities of the uniqueness of collagenous fibres, the paper of preparation has good sound absorption qualities, average sound-absorption coefficient is more than 0.5, simultaneously in order to improve the stability of paper sound absorption qualities, the present invention is a filler with the vermiculite power with excellent sound absorption qualities, add in the paper pulp, this stability that has not only increased the paper sound absorption qualities gives paper certain fire-retardant resistance to water simultaneously.
The specific embodiment
Embodiment 1: at first, with the leather waste that produces in the leather industry through washing, de-oiling, go raw meat to handle, mix with the mass ratio of water after being cut into the fritter of 4mm * 4mm by 8: 100, utilize 4000 commentaries on classics of in the PFI fiberizer, pulling an oar of the method for papermaking then, washing is sieved, and obtains the collagenous fibres slurry; Then the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 4 hours in water, 30 ° of SR then pull an oar in beater; Be 20% collagen fiber pulp again with mass percent, 70% bleaching needle-point leaf pulp, 10% vermiculite power of crossing 100 mesh sieves mixes, and the stream filter aid cationic polyacrylamide (CPAM) that helps that adds mixed slurry mass percent 0.02% makes mixed slurry; At last mixed slurry is discongested at the standing paste sample and discongest 1000 in the device and change, adjusting concentration is 0.35g/L, copies sheet in sheet forming apparatus, and the l Water Paper page or leaf squeezes 30s, 92 ℃ and obtained composite sound absorbing paper in following vacuumize 2-4 minute under hydraulic press 4Mpa.
Embodiment 2: at first, the leather waste that produces in the leather industry is passed through washing, de-oiling, goes raw meat to handle, mix with the mass ratio of water after being cut into the fritter of 4mm * 4mm by 12: 100, utilizing the method for papermaking to pull an oar in the PFI fiberizer then 5000 changes, washing is sieved, and obtains the collagenous fibres slurry; Then the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 3 hours in water, 32 ° of SR then pull an oar in beater; Be 50% collagen fiber pulp again with mass percent, 40% bleaching needle-point leaf pulp, 10% vermiculite power of crossing 100 mesh sieves mixes, and the stream filter aid cationic polyacrylamide (CPAM) that helps that adds mixed slurry mass percent 0.02% makes mixed slurry; At last mixed slurry is discongested at the standing paste sample and discongest 1000 in the device and change, adjusting concentration is 0.5g/L, copies sheet in sheet forming apparatus, and the l Water Paper page or leaf squeezes 80s, 98 ℃ and obtained composite sound absorbing paper in following vacuumize 2-4 minute under hydraulic press 4Mpa.
Embodiment 3: at first, the leather waste that produces in the leather industry is passed through washing, de-oiling, goes raw meat to handle, mix with the mass ratio of water after being cut into the fritter of 4mm * 4mm by 10: 100, utilizing the method for papermaking to pull an oar in the PFI fiberizer then 3000 changes, washing is sieved, and obtains the collagenous fibres slurry; Then the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 2 hours in water, 36 ° of SR then pull an oar in beater; Be 30% collagen fiber pulp again with mass percent, 50% bleaching needle-point leaf pulp, 20% vermiculite power of crossing 100 mesh sieves mixes, and the stream filter aid cationic polyacrylamide (CPAM) that helps that adds mixed slurry mass percent 0.02% makes mixed slurry; At last mixed slurry is discongested at the standing paste sample and discongest 1000 in the device and change, adjusting concentration is 0.75g/L, copies sheet in sheet forming apparatus, and the l Water Paper page or leaf squeezes 50s, 95 ℃ and obtained composite sound absorbing paper in following vacuumize 2-4 minute under hydraulic press 4Mpa.
Embodiment 4: at first, the leather waste that produces in the leather industry is passed through washing, de-oiling, goes raw meat to handle, mix with the mass ratio of water after being cut into the fritter of 4mm * 4mm by 15: 100, utilizing the method for papermaking to pull an oar in the PFI fiberizer then 6000 changes, washing is sieved, and obtains the collagenous fibres slurry; Then the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 2 hours in water, 38 ° of SR then pull an oar in beater; Be 40% collagen fiber pulp again with mass percent, 45% bleaching needle-point leaf pulp, 15% vermiculite power of crossing 100 mesh sieves mixes, and the stream filter aid cationic polyacrylamide (CPAM) that helps that adds mixed slurry mass percent 0.02% makes mixed slurry; At last mixed slurry is discongested at the standing paste sample and discongest 1000 in the device and change, adjusting concentration is 0.4g/L, copies sheet in sheet forming apparatus, and the l Water Paper page or leaf squeezes 120s, 100 ℃ and obtained composite sound absorbing paper in following vacuumize 2-4 minute under hydraulic press 4Mpa.
Embodiment 5: at first, the leather waste that produces in the leather industry is passed through washing, de-oiling, goes raw meat to handle, mix with the mass ratio of water after being cut into the fritter of 4mm * 4mm by 11: 100, utilizing the method for papermaking to pull an oar in the PFI fiberizer then 4500 changes, washing is sieved, and obtains the collagenous fibres slurry; Then the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 4 hours in water, 40 ° of SR then pull an oar in beater; Be 25% collagen fiber pulp again with mass percent, 60% bleaching needle-point leaf pulp, 15% vermiculite power of crossing 100 mesh sieves mixes, and the stream filter aid cationic polyacrylamide (CPAM) that helps that adds mixed slurry mass percent 0.02% makes mixed slurry; At last mixed slurry is discongested at the standing paste sample and discongest 1000 in the device and change, adjusting concentration is 0.6g/L, copies sheet in sheet forming apparatus, and the l Water Paper page or leaf squeezes 100s, 90 ℃ and obtained composite sound absorbing paper in following vacuumize 2-4 minute under hydraulic press 4Mpa.
Embodiment 6: at first, with the leather waste that produces in the leather industry through washing, de-oiling, go raw meat to handle, mix with the mass ratio of water after being cut into the fritter of 4mm * 4mm by 9: 100, utilize 3500 commentaries on classics of in the PFI fiberizer, pulling an oar of the method for papermaking then, washing is sieved, and obtains the collagenous fibres slurry; Then the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 3 hours in water, 35 ° of SR then pull an oar in beater; Be 25% collagen fiber pulp again with mass percent, 55% bleaching needle-point leaf pulp, 20% vermiculite power of crossing 100 mesh sieves mixes, and the stream filter aid cationic polyacrylamide (CPAM) that helps that adds mixed slurry mass percent 0.02% makes mixed slurry; At last mixed slurry is discongested at the standing paste sample and discongest 1000 in the device and change, adjusting concentration is 0.7g/L, copies sheet in sheet forming apparatus, and the l Water Paper page or leaf squeezes 60s, 105 ℃ and obtained composite sound absorbing paper in following vacuumize 2-4 minute under hydraulic press 4Mpa.
The present invention is reasonably and effectively used this valuable resource of process hides skin tailing, be the application of the deep development utilization of process hides skin tailing and collagenous fibres, string in field of compound material, and provide a kind of new method to the crossing research in paper industry and leather industry and acoustical material field, have important significance for theories and actual application value.The sound absorbing paper of the present invention's preparation can be by post processing, and processing obtains various forms of products, to meet the different needs, for example develops high-grade sound-absorbing wallpaper etc.Simultaneously, because collagenous fibres are to make from leather waste, can reduce production costs largely, collagenous fibres and string are joined and are copied the dust that the gained paper can not produce harmful to human.Can be widely used in the indoor finishing of music hall, stadiums, office building, cinema, conference centre and daily life, to reduce noise; The Production and Packaging sound absorbing paper is used for packing to the material of sound sensitive etc.
Claims (7)
1, a kind of preparation technology of composite sound absorbing paper is characterized in that:
1) at first, the leather waste that produces in the leather industry is passed through washing, de-oiling, goes raw meat to handle, be cut into behind the fritter of 4mm * 4mm with water by 8-15: 100 mass ratio mixes, utilize the method for the papermaking 3000-6000 that in the PFI fiberizer, pulls an oar to change then, washing is sieved, and obtains the collagenous fibres slurry;
2) then the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 2-4 hour in water, 30-40 ° of SR then pulls an oar in beater;
3) with mass percent be the collagen fiber pulp of 20-50% again, the bleaching needle-point leaf pulp of 40-70%, the vermiculite power that 10-20% crosses 100 mesh sieves mixes, and the stream filter aid cationic polyacrylamide (CPAM) that helps of adding mixed slurry mass percent 0.02% makes mixed slurry;
4) at last mixed slurry is discongested at the standing paste sample and discongest 1000 in the device and change, adjusting concentration is 0.35-0.75g/L, copy sheet in sheet forming apparatus, the l Water Paper page or leaf squeezes 30-120s under hydraulic press 4Mpa, and 90-105 ℃ obtained composite sound absorbing paper in following vacuumize 2-4 minute.
2, the preparation technology of composite sound absorbing paper according to claim 1, it is characterized in that: at first, the leather waste that produces in the leather industry is passed through washing, de-oiling, goes raw meat to handle, mix with the mass ratio of water after being cut into the fritter of 4mm * 4mm by 8: 100, utilizing the method for papermaking to pull an oar in the PFI fiberizer then 4000 changes, washing is sieved, and obtains the collagenous fibres slurry; Then the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 4 hours in water, 30 ° of SR then pull an oar in beater; Be 20% collagen fiber pulp again with mass percent, 70% bleaching needle-point leaf pulp, 10% vermiculite power of crossing 100 mesh sieves mixes, and the stream filter aid cationic polyacrylamide (CPAM) that helps that adds mixed slurry mass percent 0.02% makes mixed slurry; At last mixed slurry is discongested at the standing paste sample and discongest 1000 in the device and change, adjusting concentration is 0.35g/L, copies sheet in sheet forming apparatus, and the l Water Paper page or leaf squeezes 30s, 92 ℃ and obtained composite sound absorbing paper in following vacuumize 2-4 minute under hydraulic press 4Mpa.
3, the preparation technology of composite sound absorbing paper according to claim 1, it is characterized in that: at first, the leather waste that produces in the leather industry is passed through washing, de-oiling, goes raw meat to handle, mix with the mass ratio of water after being cut into the fritter of 4mm * 4mm by 12: 100, utilizing the method for papermaking to pull an oar in the PFI fiberizer then 5000 changes, washing is sieved, and obtains the collagenous fibres slurry; Then the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 3 hours in water, 32 ° of SR then pull an oar in beater; Be 50% collagen fiber pulp again with mass percent, 40% bleaching needle-point leaf pulp, 10% vermiculite power of crossing 100 mesh sieves mixes, and the stream filter aid cationic polyacrylamide (CPAM) that helps that adds mixed slurry mass percent 0.02% makes mixed slurry; At last mixed slurry is discongested at the standing paste sample and discongest 1000 in the device and change, adjusting concentration is 0.5g/L, copies sheet in sheet forming apparatus, and the l Water Paper page or leaf squeezes 80s, 98 ℃ and obtained composite sound absorbing paper in following vacuumize 2-4 minute under hydraulic press 4Mpa.
4, the preparation technology of composite sound absorbing paper according to claim 1, it is characterized in that: at first, the leather waste that produces in the leather industry is passed through washing, de-oiling, goes raw meat to handle, mix with the mass ratio of water after being cut into the fritter of 4mm * 4mm by 10: 100, utilizing the method for papermaking to pull an oar in the PFI fiberizer then 3000 changes, washing is sieved, and obtains the collagenous fibres slurry; Then the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 2 hours in water, 36 ° of SR then pull an oar in beater; Be 30% collagen fiber pulp again with mass percent, 50% bleaching needle-point leaf pulp, 20% vermiculite power of crossing 100 mesh sieves mixes, and the stream filter aid cationic polyacrylamide (CPAM) that helps that adds mixed slurry mass percent 0.02% makes mixed slurry; At last mixed slurry is discongested at the standing paste sample and discongest 1000 in the device and change, adjusting concentration is 0.75g/L, copies sheet in sheet forming apparatus, and the l Water Paper page or leaf squeezes 50s, 95 ℃ and obtained composite sound absorbing paper in following vacuumize 2-4 minute under hydraulic press 4Mpa.
5, the preparation technology of composite sound absorbing paper according to claim 1, it is characterized in that: at first, the leather waste that produces in the leather industry is passed through washing, de-oiling, goes raw meat to handle, mix with the mass ratio of water after being cut into the fritter of 4mm * 4mm by 15: 100, utilizing the method for papermaking to pull an oar in the PFI fiberizer then 6000 changes, washing is sieved, and obtains the collagenous fibres slurry; Then the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 2 hours in water, 38 ° of SR then pull an oar in beater; Be 40% collagen fiber pulp again with mass percent, 45% bleaching needle-point leaf pulp, 15% vermiculite power of crossing 100 mesh sieves mixes, and the stream filter aid cationic polyacrylamide (CPAM) that helps that adds mixed slurry mass percent 0.02% makes mixed slurry; At last mixed slurry is discongested at the standing paste sample and discongest 1000 in the device and change, adjusting concentration is 0.4g/L, copies sheet in sheet forming apparatus, and the l Water Paper page or leaf squeezes 120s, 100 ℃ and obtained composite sound absorbing paper in following vacuumize 2-4 minute under hydraulic press 4Mpa.
6, the preparation technology of composite sound absorbing paper according to claim 1, it is characterized in that: at first, the leather waste that produces in the leather industry is passed through washing, de-oiling, goes raw meat to handle, mix with the mass ratio of water after being cut into the fritter of 4mm * 4mm by 11: 100, utilizing the method for papermaking to pull an oar in the PFI fiberizer then 4500 changes, washing is sieved, and obtains the collagenous fibres slurry; Then the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 4 hours in water, 40 ° of SR then pull an oar in beater; Be 25% collagen fiber pulp again with mass percent, 60% bleaching needle-point leaf pulp, 15% vermiculite power of crossing 100 mesh sieves mixes, and the stream filter aid cationic polyacrylamide (CPAM) that helps that adds mixed slurry mass percent 0.02% makes mixed slurry; At last mixed slurry is discongested at the standing paste sample and discongest 1000 in the device and change, adjusting concentration is 0.6g/L, copies sheet in sheet forming apparatus, and the l Water Paper page or leaf squeezes 100s, 90 ℃ and obtained composite sound absorbing paper in following vacuumize 2-4 minute under hydraulic press 4Mpa.
7, the preparation technology of composite sound absorbing paper according to claim 1, it is characterized in that: at first, the leather waste that produces in the leather industry is passed through washing, de-oiling, goes raw meat to handle, mix with the mass ratio of water after being cut into the fritter of 4mm * 4mm by 9: 100, utilizing the method for papermaking to pull an oar in the PFI fiberizer then 3500 changes, washing is sieved, and obtains the collagenous fibres slurry; Then the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 3 hours in water, 35 ° of SR then pull an oar in beater; Be 25% collagen fiber pulp again with mass percent, 55% bleaching needle-point leaf pulp, 20% vermiculite power of crossing 100 mesh sieves mixes, and the stream filter aid cationic polyacrylamide (CPAM) that helps that adds mixed slurry mass percent 0.02% makes mixed slurry; At last mixed slurry is discongested at the standing paste sample and discongest 1000 in the device and change, adjusting concentration is 0.7g/L, copies sheet in sheet forming apparatus, and the l Water Paper page or leaf squeezes 60s, 105 ℃ and obtained composite sound absorbing paper in following vacuumize 2-4 minute under hydraulic press 4Mpa.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922128A (en) * | 2010-08-03 | 2010-12-22 | 陕西科技大学 | Method for preparing gravure paper |
| CN102277788A (en) * | 2011-07-01 | 2011-12-14 | 佛山市顺德区惠美庄材料实业有限公司 | Sound absorbing paper material and manufacturing method thereof |
| CN103408282A (en) * | 2013-07-08 | 2013-11-27 | 安徽江威精密制造有限公司 | Production method of high-voltage mica paper |
| CN103408255A (en) * | 2013-07-08 | 2013-11-27 | 安徽江威精密制造有限公司 | Making method of mica paper for capacitor |
| CN104861413A (en) * | 2015-06-09 | 2015-08-26 | 李平兰 | Method for preparing decorative interior acoustic insulating material |
| CN105200842A (en) * | 2015-09-01 | 2015-12-30 | 安庆市新宜纸业有限公司 | Production technology for coated paper |
| CN112593447A (en) * | 2020-12-08 | 2021-04-02 | 陕西科技大学 | Method for producing matte paper by utilizing solid waste |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1231640C (en) * | 2004-05-17 | 2005-12-14 | 陕西科技大学 | Method for increasing paper strength using collagenous fiber |
| CN100336971C (en) * | 2005-07-18 | 2007-09-12 | 广东省造纸研究所 | Paper maked from pulp of animal and plant fiber and its preparation technology |
| CN101050602A (en) * | 2007-02-03 | 2007-10-10 | 张立文 | Paper made from collagen fiber and its processing method |
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2008
- 2008-04-08 CN CN2008100179035A patent/CN101285285B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922128A (en) * | 2010-08-03 | 2010-12-22 | 陕西科技大学 | Method for preparing gravure paper |
| CN102277788A (en) * | 2011-07-01 | 2011-12-14 | 佛山市顺德区惠美庄材料实业有限公司 | Sound absorbing paper material and manufacturing method thereof |
| CN102277788B (en) * | 2011-07-01 | 2013-10-30 | 佛山市顺德区惠美庄材料实业有限公司 | Sound absorbing paper material and manufacturing method thereof |
| CN103408282A (en) * | 2013-07-08 | 2013-11-27 | 安徽江威精密制造有限公司 | Production method of high-voltage mica paper |
| CN103408255A (en) * | 2013-07-08 | 2013-11-27 | 安徽江威精密制造有限公司 | Making method of mica paper for capacitor |
| CN104861413A (en) * | 2015-06-09 | 2015-08-26 | 李平兰 | Method for preparing decorative interior acoustic insulating material |
| CN105200842A (en) * | 2015-09-01 | 2015-12-30 | 安庆市新宜纸业有限公司 | Production technology for coated paper |
| CN112593447A (en) * | 2020-12-08 | 2021-04-02 | 陕西科技大学 | Method for producing matte paper by utilizing solid waste |
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| CN101285285B (en) | 2010-12-15 |
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