CN106676946A - Multifunctional carbon nanotube composite packaging paper - Google Patents
Multifunctional carbon nanotube composite packaging paper Download PDFInfo
- Publication number
- CN106676946A CN106676946A CN201710014998.4A CN201710014998A CN106676946A CN 106676946 A CN106676946 A CN 106676946A CN 201710014998 A CN201710014998 A CN 201710014998A CN 106676946 A CN106676946 A CN 106676946A
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- China
- Prior art keywords
- paper
- carbon nanotube
- composite packaging
- nanotube composite
- packaging paper
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/11—Halides
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/08—Dispersing agents for fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
- D21H25/06—Physical treatment, e.g. heating, irradiating of impregnated or coated paper
Abstract
The invention discloses multifunctional carbon nanotube composite packaging paper which is prepared by pulping and defibering sugarcane paper pulp as a raw material so as to obtain a paper pulp dispersion liquid; putting carbon nanotubes into a mixture of nitric acid and sulfuric acid for soaking modification, washing till being neutral by using deionized water, adding a cation dispersing agent, performing ball-milling dispersion so as to obtain a carbon nanotube dispersing liquid of which the zeta potential is positive; and mixing the two dispersing liquids to form wet paper pieces, and further by soaking with glue, squeezing and drying, thereby obtaining a product. The multifunctional carbon nanotube composite packaging paper has properties such as electric conduction, high temperature resistance and bacterium prevention, and nano packaging can be achieved in a real sense. The product can be adopted to replace common packaging tin foil paper, and is particularly applicable to requirements of electrifying heating, bacterium prevention and the like of food packaging. The carbon nanotubes can be uniformly and firmly adhered to paper pulp fiber and are not peeled off in case of friction or back blowing, and meanwhile the bonding strength of the paper can be remarkably improved. The multifunctional carbon nanotube composite packaging paper is simple and convenient in process, low in cost and good in application prospect.
Description
Technical field
The invention belongs to field of packaging material, is specifically related to a kind of with specific functions such as conductive, heating, sterilizations
CNT composite packaging paper.
Background technology
The packaging of conventional products needs common carton just can meet, and cost is relatively low, but to prevent harmful micro-
Biological invasion, prevent chemical reaction and be accomplished by packaging material to possess other functions in addition to packaging, more particularly
The article for having specific use also need to paper packaging material have can heat, the several functions such as conduction, antistatic.CNT is due to this
Body specific surface area is larger, high temperature resistant, the heat conductivility with brilliance, high electrology characteristic, excellent mechanical property, and
It is a kind of good inorganic antibacterial material, therefore has very extensive purposes.Combined using CNT and plain paper fiber
Many excellent properties of paper CNT can be given, packaging material are acted not only as, special purposes can also be realized.
In prior art, have using the compound carbon nanomaterial of filter method, but rejection is low, and carbon nanomaterial is commonly being planted
It is mainly absorption in heaps between the space of fibres.Also mainly adopt between the carbon nanomaterial of conventional load and Plant fiber
Fixing, cross-linking agent particle easily embeds carbon nanomaterial cross-linking agent, and the conduction of paper, radiating all receive very big impact.
Also have been reported that in addition using the compound common plant fiber of Graphene as packing timber, but the technology often allows the breathability of paper
Can be deteriorated, and easily come off, dry linting, so limiting its use range.
The content of the invention
Present invention aims to the deficiencies in the prior art, there is provided a kind of multifunctional carbon nanotube composite packaging paper,
Nano-packaging paper wood conduction, high temperature resistant, the performance of sterilization are given, and prevents the nanoparticle in wrapping paper from coming off.
The purpose of the present invention is achieved by the following technical programs.
Unless otherwise stated, percent of the present invention is mass percent.
A kind of multifunctional carbon nanotube composite packaging paper, preparation method is comprised the following steps：
(1) to air-dry bagasse as raw material, using oxygen alkali pulping, through being beaten, discongesting paper pulp dispersion liquid is made；
(2) by nitric acid and sulphuric acid in mass ratio 1:3 mixing, CNT is placed in immersion 5h in mixed acid and is modified, then spends
Ion water washing is air-dried standby to neutral；
(3) standby CNT in mass ratio 2 is taken:3 add cation dispersing agent, carry out ball milling dispersion, make carbon and receive
Mitron dispersion liquid, carbon nano tube dispersion liquid zeta current potentials are for just；
(4) the paper pulp dispersion liquid and carbon nano tube dispersion liquid are taken by 1:1 volume ratio mixing, and stirring allows two kinds of slurries
Electric charge is effectively middle to be closed；
(5) wet web is configured on former, is dehydrated by vacuum draw during shaping；
(6) wet web after shaping through impregnation, squeezing and is dried again, that is, obtain required CNT composite packaging
Paper.
Described cation dispersing agent is preferably cetyl trimethylammonium bromide.
The vacuum of the vacuum draw dehydration is adjusted, makes the wet web mass dryness fraction after shaping be 20 ± 1%.
Described impregnation adopts polyurethane impregnation, and carries out supercalendering process.
Described is dried its process conditions for 90 DEG C of temperature, time 15min；Final web dryness is 95 ± 1%.
Relative to prior art, the present invention has advantages below：
(1) present invention realizes the nano-meter characteristic of paper using CNT, gives paper conduction, high temperature resistant, antibacterial etc.
Performance, realizes nano-packaging truly.The product can replace conventional packaging masking foil, be particularly suitable for food
The demands such as electrified regulation, the antibacterial of packaging.
(2) using containing the more begasse pulp of hemicellulose, for CNT recombination process provides more side chains with
Functional group.
(3) CNT Jing nitric acid and nitration mixture made by sulphuric acid soak modified introducing hydrophilic group, substantially improve carbon
The hydrophilic of nanotube.
(4) using cetyl trimethylammonium bromide dispersing Nano carbon tubes solution, can be with anion, nonionic, both sexes table
Face material has good coordinating；The electronegativity of carbon nano tube dispersion liquid can also be changed simultaneously, make solution integrally positively charged,
So as to effectively increase retention of the CNT in paper pulp, CNT is set uniformly firmly to be attached on paper pulp fiber,
Determine through friction, blowback, CNT will not fall off, while dramatically increasing the bond strength of paper.
Description of the drawings
Fig. 1 is the preparation technology schematic diagram of CNT composite packaging paper of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples the present invention is described in further detail, but drawings and Examples are not right
The restriction of technical solution of the present invention, it is all based on present invention teach that the change made, should all belong to protection scope of the present invention.
Embodiment 1
CNT composite packaging paper is prepared, preparation technology flow process is shown in Fig. 1.
Begasse pulp is prepared by the pulping process of table 1, the pulp of yield 49.8% is adopted by screening, weighed certain
Over dry slurry, get to 45 ° of SR in the 10% dense lower beating of slurry, beating degree through PFI, discongest 3000 turns by fluffer, add water
It is configured to 2% slurry dispersion liquid；Identical method prepares two parts, and determines its Zeta potential respectively, and correlated results is shown in Table 2.Take
5ml nitric acid and 15ml sulphuric acid mix, and CNT is placed in into immersion 5h in mixed acid and is modified, and make the upper carboxylic of carbon nano tube surface grafting
Base and hydroxy functional group, then be washed with deionized neutral and air-dry.(quality is to add cetyl trimethylammonium bromide
1.5 times of CNTs) as dispersant, ball milling dispersion is carried out, ball milling concentration 1/600 makes carbon nano tube dispersion liquid, gives carbon
Nanotube dispersion liquid zeta current potentials determine respectively its zeta current potential for just, and test result is shown in Table 2, be respectively+56.8mv and+
70.2mv.By quantitative 110g/m2Pattern weigh and prepare paper pulp dispersion liquid, paper pulp dispersion liquid and carbon nano tube dispersion liquid are pressed into 1:
1 volume mixture, and close during stirring allows two kinds of slurry electric charges effectively, wet web is then configured on former, pass through during shaping
Vacuum draw is dehydrated, and adjusts vacuum, makes the wet web mass dryness fraction after shaping be 20 ± 1%.Wet web is soaked using 2% polyurethane
Glue, and carry out supercalendering process, squeezes, and at 90 DEG C of temperature 15min is dried, and it is 95 ± 1% control final web dryness, is obtained
Obtain required CNT composite packaging paper.
Paper determines respectively its correlated performance, wherein weighing CNT in paper pulp by the change of fluorescent whiteness
Retention, is specifically shown in Table 3；As can also be seen from Table 3, add after CNT and impart the certain electric conductivity of paper, paper
Resistivity, while adding the compound paper antimicrobial efficiency of CNT reaches more than 99%, meets in 4200m Ω cm or so
The related request of anti-microbial type product packaging paper.
The slurrying experiment condition of table 1.
Note：Cooking liquor compares 1:6,120 DEG C of maximum temperature, intensification timing is from the beginning of 80 DEG C；
The zeta potential change of the slurry of table 2.
Note：Two kinds of slurries are mixed by same volume；
The extrusion coating paper performance measurement of table 3.
Note：Antibiotic rate adopts non-woven fabrics for blank sample, is used uniformly across absorption process measure, antibacterial mainly for escherichia coli and
Staphylococcus aureuses.
Embodiment 2
Repeat embodiment 1, there is following difference：Take respectively two parts of paper pulp sample prepare slurry (prepare slurry charge measurement see
Table 4), a direct forming, applying glue (2% polyurethane) are used as blank sample；Portion adopts electric charge for the CNT point of+50.2mv
Dispersion liquid mixes, and stirs postforming copy paper, and two groups of samples are all dried using 90 DEG C of conditions, and determine related performance indicators, specifically
Index is shown in Table 5；Final result shows：Compound sheet resistivity is 3800m Ω cm, antibiotic rate is 99.9%, and plain paper
Electric conductivity and antibiotic rate all do not have substantially, and other performance indications reach the requirement of function packaging paper, the outside evenness of paper compared with
Good, sample is determined through blowback particle detachment counting method, and as a result surface paper surface CNT particle is related without obscission
Performance indications meet the requirement of packaging.
The slurry charge measurement of table 4.
Note：Two kinds of slurries press 1:1 volume is mixed；
The extrusion coating paper performance measurement of table 5.
Note：In table plain paper due to resistivity it is too big, it is impossible to determine its electric conductivity；Antibiotic rate is determined using absorption process.
Claims (5)
1. a kind of multifunctional carbon nanotube composite packaging paper, it is characterised in that：Preparation method is comprised the following steps：
(1) to air-dry bagasse as raw material, using oxygen alkali pulping, through being beaten, discongesting paper pulp dispersion liquid is made；
(2) by nitric acid and sulphuric acid in mass ratio 1:3 mixing, CNT is placed in immersion 5h in mixed acid and is modified, then uses deionization
Water washing is air-dried standby to neutral；
(3) standby CNT in mass ratio 2 is taken:3 add cation dispersing agent, carry out ball milling dispersion, make CNT
Dispersion liquid, carbon nano tube dispersion liquid zeta current potentials are for just；
(4) the paper pulp dispersion liquid and carbon nano tube dispersion liquid are taken by 1:1 volume ratio mixing, and stirring allows two kinds of slurry electric charges
Close in effectively；
(5) wet web is configured on former, is dehydrated by vacuum draw during shaping；
(6) wet web after shaping through impregnation, squeezing and is dried again, that is, obtain required CNT composite packaging paper.
2. multifunctional carbon nanotube composite packaging paper according to claim 1, it is characterised in that：Described cation dispersion
Agent is cetyl trimethylammonium bromide.
3. multifunctional carbon nanotube composite packaging paper according to claim 1, it is characterised in that：Adjust the vacuum draw
The vacuum of dehydration, makes the wet web mass dryness fraction after shaping be 20 ± 1%.
4. multifunctional carbon nanotube composite packaging paper according to claim 1, it is characterised in that：Described impregnation is using poly-
Urethane impregnation, and carry out supercalendering process.
5. multifunctional carbon nanotube composite packaging paper according to claim 1, it is characterised in that：Described is dried its technique
Condition be 90 DEG C of temperature, time 15min；Final web dryness is 95 ± 1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710014998.4A CN106676946A (en) | 2017-01-09 | 2017-01-09 | Multifunctional carbon nanotube composite packaging paper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710014998.4A CN106676946A (en) | 2017-01-09 | 2017-01-09 | Multifunctional carbon nanotube composite packaging paper |
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| Publication Number | Publication Date |
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| CN106676946A true CN106676946A (en) | 2017-05-17 |
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| CN201710014998.4A Pending CN106676946A (en) | 2017-01-09 | 2017-01-09 | Multifunctional carbon nanotube composite packaging paper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108570883A (en) * | 2017-03-13 | 2018-09-25 | 昆明纳太科技有限公司 | Carbon nanotube composite filter paper and preparation method thereof |
Citations (5)
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|---|---|---|---|---|
| CN101827975A (en) * | 2007-10-23 | 2010-09-08 | 特种制纸株式会社 | Sheet-like article and method for producing the same |
| CN102489259A (en) * | 2011-11-10 | 2012-06-13 | 河南大学 | Graphene oxide/cellulose compound material as well as preparation method and application of same |
| CN103225173A (en) * | 2013-05-17 | 2013-07-31 | 天津工业大学 | Cellulose/carbon nano tube composite nanofiber membrane preparation method |
| US20150368108A1 (en) * | 2013-01-24 | 2015-12-24 | Zeon Corporation | Carbon nanotube dispersion liquid, method of manufacturing same, carbon nanotube composition, and method of manufacturing same |
| CN105297524A (en) * | 2014-05-26 | 2016-02-03 | 昆明纳太科技有限公司 | Cross-scale fiber paper and wet-process papermaking method therefor |
-
2017
- 2017-01-09 CN CN201710014998.4A patent/CN106676946A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101827975A (en) * | 2007-10-23 | 2010-09-08 | 特种制纸株式会社 | Sheet-like article and method for producing the same |
| CN102489259A (en) * | 2011-11-10 | 2012-06-13 | 河南大学 | Graphene oxide/cellulose compound material as well as preparation method and application of same |
| US20150368108A1 (en) * | 2013-01-24 | 2015-12-24 | Zeon Corporation | Carbon nanotube dispersion liquid, method of manufacturing same, carbon nanotube composition, and method of manufacturing same |
| CN103225173A (en) * | 2013-05-17 | 2013-07-31 | 天津工业大学 | Cellulose/carbon nano tube composite nanofiber membrane preparation method |
| CN105297524A (en) * | 2014-05-26 | 2016-02-03 | 昆明纳太科技有限公司 | Cross-scale fiber paper and wet-process papermaking method therefor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108570883A (en) * | 2017-03-13 | 2018-09-25 | 昆明纳太科技有限公司 | Carbon nanotube composite filter paper and preparation method thereof |
| CN108570883B (en) * | 2017-03-13 | 2022-07-19 | 昆明纳太科技有限公司 | Carbon nano tube composite filter paper and preparation method thereof |
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