CN107556529B - A kind of method of modifying of nanometer calcium carbonate and its application on food fresh keeping membrane - Google Patents
A kind of method of modifying of nanometer calcium carbonate and its application on food fresh keeping membrane Download PDFInfo
- Publication number
- CN107556529B CN107556529B CN201710915889.XA CN201710915889A CN107556529B CN 107556529 B CN107556529 B CN 107556529B CN 201710915889 A CN201710915889 A CN 201710915889A CN 107556529 B CN107556529 B CN 107556529B
- Authority
- CN
- China
- Prior art keywords
- calcium carbonate
- parts
- slurry
- modifying
- nanometer calcium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a kind of method of modifying of nanometer calcium carbonate, belong to calcium carbonate manufacturing technology field, and the method for modifying is the following steps are included: taking slurry, heat slurry and being modified；Modifying agent is added into nanometer calcium carbonate slurry in modifying process；Modifying agent is made by following raw material: alanine, octadecylamine, octylame, carboxymethyl chitosan, lemon-grass, nano-titanium dioxide, rosin resin, octyl phenol polyoxyethylene ether and double dimethylaminoethyl ethers；The modified nano calcium carbonate of method of modifying preparation can be applied on food fresh keeping membrane, obtain antimicrobial preservative film；Antimicrobial preservative film is made by following raw material: polyvinyl resin, modified nano calcium carbonate, epoxidized soybean oil, antioxidant, medical stone, calcium-zinc composite stabilizing agent, nano silica, dioctyl phthalate and polypropylene glycol adipate；The present invention solves the problems, such as that agglomeration easily occurs in preservative film for Conventional nano calcium carbonate and traditional preservative film antibacterial effect is unconspicuous.
Description
Technical field
The invention belongs to calcium carbonate manufacturing technology fields, and in particular to a kind of method of modifying of nanometer calcium carbonate and its eat
Application on product preservative film.
Background technique
Preservative film is a kind of plastic packing product, is widely used in food packaging；In life, people are frequently by fresh-keeping
Film carrys out fresh-keeping foodstuff, such as: when food is put into refrigerator, it will usually cover one layer of preservative film on food.Preservative film should have
The oxygen permeability and moisture permeability of appropriateness adjust by the oxygen content and moisture content around fresh-keeping product, obstruct the dust in air, from
And extend the freshness date of food.But existing most of preservative films increase oxygen permeability and moisture permeability is established and sacrificing preservative film
Toughness.
Ultra-fine grade substance of the nanometer calcium carbonate as filling plastic, has special-effect in terms of changing product properties；It is existing
Research shows that nanometer calcium carbonate is added in food fresh keeping membrane, it can make food fresh keeping membrane that there is barrier, antibacterial and fresh-keeping etc. special
Property, and the toughness of preservative film will not be reduced；But the characteristics such as nano particle has diameter grain small, and surface-active is big, biological respinse
Activity is more much bigger than ordinary matter, and therefore, agglomeration easily occurs in preservative film for nanometer calcium carbonate filler, leads to preservative film
Toughness improves unobvious.In addition, existing preservative film is manufactured almost exclusively by the purpose that food and air exclusion are realized to antibacterial, but
It is that the effect is unsatisfactory for this method.
Summary of the invention
Goal of the invention of the invention is to provide a kind of method of modifying of nanometer calcium carbonate, to solve Conventional nano calcium carbonate
Agglomeration and the unconspicuous problem of traditional preservative film antibacterial effect easily occur in food fresh keeping membrane.
In order to achieve the above objectives, the technical scheme adopted by the invention is that:
A kind of method of modifying of nanometer calcium carbonate, comprising the following steps:
(1) it takes slurry: nanometer calcium carbonate slurry is delivered in the activating tank equipped with agitating device；
(2) heat slurry: the nanometer calcium carbonate slurry in the activating tank is heated to 60-70 DEG C, and is kept the temperature；
(3) modified: modifying agent being added in the nanometer calcium carbonate slurry through step (2) heating and is carried out at surface
Reason, and persistently stirred by the agitating device；The modifying agent is made by the raw material of following parts by weight: 20-30 parts of alanine,
8-12 parts of octadecylamine, 4-8 parts of octylame, 4-10 parts of carboxymethyl chitosan, 3-7 parts of lemon-grass, 2-4 parts of nano-titanium dioxide, rosin
1-2 parts of 2-6 parts of resin, 1-2 parts of octyl phenol polyoxyethylene ether and double dimethylaminoethyl ethers；It is 1-2 hours to be surface-treated, it obtains
Obtain modified slurry；
(4) finished product: after the modified slurry obtained in step (3) is carried out filters pressing, drying and crushed
Obtain modified nano calcium carbonate.
Preferably, in step (1), the preparation method of the nanometer calcium carbonate slurry the following steps are included:
A1. Ca (OH) is prepared2Suspension: CaO is put into digester, and adds water digestion, acquisition mass concentration is 10-16%
And the Ca (OH) that temperature is 20-25 DEG C2Suspension；
A2. it is carbonized: the Ca (OH) that step A1 is obtained2Suspension is added in carbonization reactor；Then, Xiang Suoshu
Dispersing agent is added in carbonization reactor；Then, the CO that volumetric concentration is 60-80% is inputted in Xiang Suoshu carbonization reactor2Gas
Carburizing reagent is carried out, and is stirred by the agitating device；Finally, stopping carbonization when carbonation rate reaches 8-10%, obtain
Obtain nanometer calcium carbonate slurry.
Preferably, in step (3), the mixing speed of the agitating device is 800-1000rpm.
Preferably, in step (3), the mass ratio of the modifying agent and nanometer calcium carbonate are as follows: 1:20-30.
Preferably, in step (4), the drying includes level-one drying and secondary drying；The dry temperature of the level-one is
100-120 DEG C, and the water content of filters pressing product is made to be down to 15-20%；The temperature of the secondary drying is 70-80 DEG C, and is made
The water content for obtaining filters pressing product is down to 0.4% or less.
Preferably, in step (4), the crushing is crushed by eddy mill.
Modified nano calcium carbonate obtained by a kind of method of modifying of nanometer calcium carbonate as described above.
A kind of application of modified nano calcium carbonate as described above, the modified nano calcium carbonate can be applied to food fresh keeping
On film, antimicrobial preservative film is obtained；The antimicrobial preservative film is made by the raw material of following parts by weight: 80-100 parts of polyvinyl resin,
8-16 parts of modified nano calcium carbonate, 2-6 parts of epoxidized soybean oil, 0.1-0.5 parts of antioxidant, 4-8 parts of medical stone, Ca Zn composite are stablized
2-6 parts of agent, 3-5 parts of nano silica, 1-2 parts of dioctyl phthalate and 1-2 parts of polypropylene glycol adipate.
Due to the adoption of the above technical scheme, the invention has the following advantages:
1. having many active groups in modifying agent of the invention, the compatibility of active group and nanometer calcium carbonate is preferable,
It is easy to produce very strong binding force；Modifying agent through the invention is modified Nano particles of calcium carbonate surface, can obtain
The finely dispersed modified nano calcium carbonate of particle, avoids the agglomeration occurred in nanometer calcium carbonate use process.It will be modified
Nanon calcium carbonatefilled can effectively improve the toughness of food fresh keeping membrane to food fresh keeping membrane.Modifying agent phase of the invention
To traditional modifying agent, modified effect is more preferable, becomes apparent to the promotion effect of fresh-keeping film toughness；Wherein, modification of the invention
In agent, alanine can be grafted to the surface of nanometer calcium carbonate in the form being chemically bonded, so that the crystalline substance of modified nano calcium carbonate
Lattice expansion, intergranular away from become larger, favorable dispersibility；Octadecylamine and octylame can make nanometer calcium carbonate surface from hydrophilic and oleophobic to parent
The hydrophobic transformation of oil, dispersibility greatly improve；Rosin resin has the function of forming coating, is able to ascend the stabilization of nanometer calcium carbonate
Property.
2. containing antipathogenic composition in modifying agent of the invention, so that the modified nano calcium carbonate of modified acquisition is with antibacterial
The effect of；Wherein, carboxymethyl chitosan, lemon-grass, octyl phenol polyoxyethylene ether and nano-titanium dioxide all have very strong
Antibacterial action, these raw materials are gathered in the surface of nanometer calcium carbonate using nanometer calcium carbonate as carrier, can not only to be modified
Nanometer calcium carbonate has good dispersibility, but also has good antibiotic property；When modified nano calcium carbonate is answered as filler
When using on food fresh keeping membrane, the fungistatic effect of preservative film can be effectively improved.It is eaten in addition, modified nano calcium carbonate is added
Product preservative film, so that food fresh keeping membrane is degradable, small pollution of the environment is environmentally protective.
3. the modified nano calcium carbonate that the present invention obtains is applied on food fresh keeping membrane as packing material, can also improve
The oxygen permeability and moisture permeability of food fresh keeping membrane, improve the fresh-keeping effect of preservative film.
Specific embodiment
Technical solution of the present invention is further described in detail With reference to embodiment.
Embodiment 1
A kind of method of modifying of nanometer calcium carbonate, comprising the following steps:
(1) it takes slurry: nanometer calcium carbonate slurry is delivered in the activating tank equipped with agitating device；Wherein, the nano-sized carbon
The preparation method of sour calcium slurry the following steps are included:
A1. Ca (OH) is prepared2Suspension: being put into digester for CaO, and adds water digestion, obtain mass concentration be 10% with
And the Ca (OH) that temperature is 20 DEG C2Suspension.
A2. it is carbonized: the Ca (OH) that step A1 is obtained2Suspension is added in carbonization reactor；Then, Xiang Suoshu
Dispersing agent is added in carbonization reactor；Then, the CO that volumetric concentration is 60% is inputted in Xiang Suoshu carbonization reactor2Gas carries out
Carburizing reagent, and be stirred by the agitating device；Finally, stopping carbonization when carbonation rate reaches 8%, nano-sized carbon is obtained
Sour calcium slurry.
(2) heat slurry: the nanometer calcium carbonate slurry in the activating tank is heated to 60 DEG C, and is kept the temperature.
(3) modified: modifying agent being added in the nanometer calcium carbonate slurry through step (2) heating and is carried out at surface
Reason, and persistently stirred by the agitating device, the mixing speed of the agitating device is 800rpm.The modifying agent is by following
The raw material of parts by weight is made: 20 parts of alanine, 8 parts of octadecylamine, 4 parts of octylame, 4 parts of carboxymethyl chitosan, lemon-grass 3 part, nanometer
1 part of 2 parts of titanium dioxide, 2 parts of rosin resin, 1 part of octyl phenol polyoxyethylene ether and double dimethylaminoethyl ethers.The modifying agent
With the mass ratio of nanometer calcium carbonate are as follows: 1:30.Wait be surface-treated 1 hour, modified slurry is obtained.
(4) finished product: after the modified slurry obtained in step (3) is carried out filters pressing, drying and crushed
Obtain modified nano calcium carbonate.The drying includes level-one drying and secondary drying；The dry temperature of the level-one is 100 DEG C,
And the water content of filters pressing product is made to be down to 15%.The temperature of the secondary drying is 70 DEG C, and makes the aqueous of filters pressing product
Amount is down to 0.4% or less.The crushing is crushed by eddy mill.
Modified nano calcium carbonate obtained by a kind of method of modifying of nanometer calcium carbonate as described above.
A kind of application of modified nano calcium carbonate as described above, the modified nano calcium carbonate can be applied to food fresh keeping
On film, antimicrobial preservative film is obtained.The antimicrobial preservative film is made by the raw material of following parts by weight: 80 parts of polyvinyl resin is modified
8 parts of nanometer calcium carbonate, 2 parts of epoxidized soybean oil, 0.1 part of antioxidant, 4 parts of medical stone, 2 parts of calcium-zinc composite stabilizing agent, nano-silica
3 parts of SiClx, 1 part of dioctyl phthalate and 1 part of polypropylene glycol adipate.It is strong to the stretching of the antimicrobial preservative film
Degree, elongation at break, oxygen transit dose, steam penetrating capacity and opposite bacteriostasis rate measure, measurement data such as 1 institute of table
Show.
Embodiment 2
A kind of method of modifying of nanometer calcium carbonate, comprising the following steps:
(1) it takes slurry: nanometer calcium carbonate slurry is delivered in the activating tank equipped with agitating device；Wherein, the nano-sized carbon
The preparation method of sour calcium slurry the following steps are included:
A1. Ca (OH) is prepared2Suspension: being put into digester for CaO, and adds water digestion, obtain mass concentration be 16% with
And the Ca (OH) that temperature is 25 DEG C2Suspension.
A2. it is carbonized: the Ca (OH) that step A1 is obtained2Suspension is added in carbonization reactor；Then, Xiang Suoshu
Dispersing agent is added in carbonization reactor；Then, the CO that volumetric concentration is 80% is inputted in Xiang Suoshu carbonization reactor2Gas carries out
Carburizing reagent, and be stirred by the agitating device；Finally, stopping carbonization when carbonation rate reaches 10%, nanometer is obtained
Calcium carbonate slurry.
(2) heat slurry: the nanometer calcium carbonate slurry in the activating tank is heated to 70 DEG C, and is kept the temperature.
(3) modified: modifying agent being added in the nanometer calcium carbonate slurry through step (2) heating and is carried out at surface
Reason, and persistently stirred by the agitating device, the mixing speed of the agitating device is 1000rpm.The modifying agent by with
The raw materials of lower parts by weight is made: 30 parts of alanine, 12 parts of octadecylamine, 8 parts of octylame, 10 parts of carboxymethyl chitosan, 7 parts of lemon-grass,
2 parts of 4 parts of nano-titanium dioxide, 6 parts of rosin resin, 2 parts of octyl phenol polyoxyethylene ether and double dimethylaminoethyl ethers.It is described to change
The mass ratio of property agent and nanometer calcium carbonate are as follows: 1:20.Wait be surface-treated 2 hours, modified slurry is obtained.
(4) finished product: after the modified slurry obtained in step (3) is carried out filters pressing, drying and crushed
Obtain modified nano calcium carbonate.The drying includes level-one drying and secondary drying；The dry temperature of the level-one is 120 DEG C,
And the water content of filters pressing product is made to be down to 20%.The temperature of the secondary drying is 80 DEG C, and makes the aqueous of filters pressing product
Amount is down to 0.4% or less.The crushing is crushed by eddy mill.
Modified nano calcium carbonate obtained by a kind of method of modifying of nanometer calcium carbonate as described above.
A kind of application of modified nano calcium carbonate as described above, the modified nano calcium carbonate can be applied to food fresh keeping
On film, antimicrobial preservative film is obtained.The antimicrobial preservative film is made by the raw material of following parts by weight: 100 parts of polyvinyl resin is modified
16 parts of nanometer calcium carbonate, 6 parts of epoxidized soybean oil, 0.5 part of antioxidant, 8 parts of medical stone, 6 parts of calcium-zinc composite stabilizing agent, nano-silica
5 parts of SiClx, 2 parts of dioctyl phthalate and 2 parts of polypropylene glycol adipate.It is strong to the stretching of the antimicrobial preservative film
Degree, elongation at break, oxygen transit dose, steam penetrating capacity and opposite bacteriostasis rate measure, measurement data such as 1 institute of table
Show.
Embodiment 3
A kind of method of modifying of nanometer calcium carbonate, comprising the following steps:
(1) it takes slurry: nanometer calcium carbonate slurry is delivered in the activating tank equipped with agitating device；Wherein, the nano-sized carbon
The preparation method of sour calcium slurry the following steps are included:
A1. Ca (OH) is prepared2Suspension: being put into digester for CaO, and adds water digestion, obtain mass concentration be 13% with
And the Ca (OH) that temperature is 23 DEG C2Suspension.
A2. it is carbonized: the Ca (OH) that step A1 is obtained2Suspension is added in carbonization reactor；Then, Xiang Suoshu
Dispersing agent is added in carbonization reactor；Then, the CO that volumetric concentration is 70% is inputted in Xiang Suoshu carbonization reactor2Gas carries out
Carburizing reagent, and be stirred by the agitating device；Finally, stopping carbonization when carbonation rate reaches 9%, nano-sized carbon is obtained
Sour calcium slurry.
(2) heat slurry: the nanometer calcium carbonate slurry in the activating tank is heated to 65 DEG C, and is kept the temperature.
(3) modified: modifying agent being added in the nanometer calcium carbonate slurry through step (2) heating and is carried out at surface
Reason, and persistently stirred by the agitating device, the mixing speed of the agitating device is 900rpm.The modifying agent is by following
The raw material of parts by weight is made: 25 parts of alanine, 10 parts of octadecylamine, 6 parts of octylame, 7 parts of carboxymethyl chitosan, lemon-grass 5 part, nanometer
1.5 parts of 3 parts of titanium dioxide, 4 parts of rosin resin, 1.5 parts of octyl phenol polyoxyethylene ether and double dimethylaminoethyl ethers.It is described to change
The mass ratio of property agent and nanometer calcium carbonate are as follows: 1:25.Wait be surface-treated 1.5 hours, modified slurry is obtained.
(4) finished product: after the modified slurry obtained in step (3) is carried out filters pressing, drying and crushed
Obtain modified nano calcium carbonate.The drying includes level-one drying and secondary drying；The dry temperature of the level-one is 110 DEG C,
And the water content of filters pressing product is made to be down to 18%.The temperature of the secondary drying is 75 DEG C, and makes the aqueous of filters pressing product
Amount is down to 0.4% or less.The crushing is crushed by eddy mill.
Modified nano calcium carbonate obtained by a kind of method of modifying of nanometer calcium carbonate as described above.
A kind of application of modified nano calcium carbonate as described above, the modified nano calcium carbonate can be applied to food fresh keeping
On film, antimicrobial preservative film is obtained.The antimicrobial preservative film is made by the raw material of following parts by weight: 90 parts of polyvinyl resin is modified
12 parts of nanometer calcium carbonate, 4 parts of epoxidized soybean oil, 0.3 part of antioxidant, 6 parts of medical stone, 4 parts of calcium-zinc composite stabilizing agent, nano-silica
4 parts of SiClx, 1.5 parts of dioctyl phthalate and 1.5 parts of polypropylene glycol adipate.Stretching to the antimicrobial preservative film
Intensity, elongation at break, oxygen transit dose, steam penetrating capacity and opposite bacteriostasis rate measure, measurement data such as 1 institute of table
Show.
In this regard, comparative example of the invention has also been devised in applicant, it is specific as follows:
Comparative example 1
Food fresh keeping membrane is not filled with modified nano calcium carbonate, measure its tensile strength, elongation at break, oxygen transit dose,
Steam penetrating capacity and opposite bacteriostasis rate, measurement data are as shown in table 1.
Comparative example 2
When executing step (3) into, the modifying agent is changed to conventional modifying agent Sodium stearate, other processing are and embodiment
3 is identical；By by the modified nanon calcium carbonatefilled to food fresh keeping membrane of Sodium stearate, and to the tensile strength of preservative film,
Elongation at break, oxygen transit dose, steam penetrating capacity and opposite bacteriostasis rate measure, and measurement data is as shown in table 1.
Table 1
As shown in Table 1, the antimicrobial preservative film that embodiment 1,2,3 obtains, tensile strength and elongation at break are equal
Much higher than the preservative film that comparative example 1,2 obtains, it is bright to illustrate that the relatively traditional preservative film of the toughness of the antimicrobial preservative film has obtained
Aobvious raising；The antimicrobial preservative film that embodiment 1,2,3 obtains, oxygen transit dose, steam penetrating capacity are much higher than pair
The preservative film that ratio 1,2 obtains, the permeability for illustrating the antimicrobial preservative film more preferably, are conducive to food fresh keeping；Embodiment 1,2,3
The antimicrobial preservative film obtained, opposite bacteriostasis rate are much higher than the preservative film that comparative example 1,2 obtains, illustrate the anti-bacterial refreshing
The fungistatic effect of film becomes apparent from.Therefore, the present invention can effectively solve Conventional nano calcium carbonate and easily reunite in preservative film
Therefore phenomenon simultaneously causes toughness to improve unconspicuous problem and the unconspicuous problem of traditional preservative film antibacterial effect.Of the invention
Manufacture craft is simple, and equipment investment is low, has good commercial introduction value.
Above description is the detailed description for the present invention preferably possible embodiments, but embodiment is not limited to this hair
Bright patent claim, it is all the present invention suggested by technical spirit under completed same changes or modifications change, should all belong to
In the covered the scope of the patents of the present invention.
Claims (3)
1. a kind of method of modifying of nanometer calcium carbonate, which comprises the following steps:
(1) it takes slurry: nanometer calcium carbonate slurry is delivered in the activating tank equipped with agitating device；
(2) heat slurry: the nanometer calcium carbonate slurry in the activating tank is heated to 60-70 DEG C, and is kept the temperature；
(3) modified: modifying agent is added in the nanometer calcium carbonate slurry through step (2) heating and is surface-treated, and
It is persistently stirred by the agitating device；The modifying agent is made by the raw material of following parts by weight: 20-30 parts of alanine, 18
8-12 parts of amine, 4-8 parts of octylame, 4-10 parts of carboxymethyl chitosan, 3-7 parts of lemon-grass, 2-4 parts of nano-titanium dioxide, rosin resin
1-2 parts of 2-6 parts, 1-2 parts of octyl phenol polyoxyethylene ether and double dimethylaminoethyl ethers；It is 1-2 hours to be surface-treated, changed
Property slurry；
(4) it finished product: after the modified slurry obtained in step (3) is carried out filters pressing, drying and crushed, can be obtained
Modified nano calcium carbonate；
In step (1), the preparation method of the nanometer calcium carbonate slurry the following steps are included:
A1. Ca (OH) is prepared2Suspension: being put into digester for CaO, and adds water digestion, obtain mass concentration be 10-16% and
The Ca (OH) that temperature is 20-25 DEG C2Suspension；
A2. it is carbonized: the Ca (OH) that step A1 is obtained2Suspension is added in carbonization reactor；Then, to the carbonization
Dispersing agent is added in reactor；Then, the CO that volumetric concentration is 60-80% is inputted in Xiang Suoshu carbonization reactor2Gas carries out
Carburizing reagent, and be stirred by the agitating device；Finally, stopping carbonization when carbonation rate reaches 8-10%, received
Rice calcium carbonate slurry；
In step (3), the mixing speed of the agitating device is 800-1000rpm；
In step (3), the mass ratio of the modifying agent and nanometer calcium carbonate are as follows: 1:20-30；
In step (4), the drying includes level-one drying and secondary drying；The dry temperature of the level-one is 100-120 DEG C, and
So that the water content of filters pressing product is down to 15-20%；The temperature of the secondary drying is 70-80 DEG C, and makes filters pressing product
Water content is down to 0.4% or less；
In step (4), the crushing is crushed by eddy mill.
2. modified nano calcium carbonate obtained by a kind of method of modifying as the described in any item nanometer calcium carbonates of claim 1.
3. a kind of application of modified nano calcium carbonate as claimed in claim 2, it is characterised in that: the modified nano calcium carbonate
It can be applied on food fresh keeping membrane, obtain antimicrobial preservative film；The antimicrobial preservative film is made by the raw material of following parts by weight: poly- second
80-100 parts of olefine resin, 8-16 parts of modified nano calcium carbonate, 2-6 parts of epoxidized soybean oil, 0.1-0.5 parts of antioxidant, medical stone 4-8
Part, 2-6 parts of calcium-zinc composite stabilizing agent, 3-5 parts of nano silica, 1-2 parts of dioctyl phthalate and polyadipate third
1-2 parts of diol ester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710915889.XA CN107556529B (en) | 2017-09-30 | 2017-09-30 | A kind of method of modifying of nanometer calcium carbonate and its application on food fresh keeping membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710915889.XA CN107556529B (en) | 2017-09-30 | 2017-09-30 | A kind of method of modifying of nanometer calcium carbonate and its application on food fresh keeping membrane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107556529A CN107556529A (en) | 2018-01-09 |
| CN107556529B true CN107556529B (en) | 2019-05-21 |
Family
ID=60985026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710915889.XA Active CN107556529B (en) | 2017-09-30 | 2017-09-30 | A kind of method of modifying of nanometer calcium carbonate and its application on food fresh keeping membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107556529B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109280244A (en) * | 2018-09-14 | 2019-01-29 | 安徽同利塑胶彩印有限公司 | A kind of domestic freezer meat storage freshness protection package |
| US10358356B1 (en) | 2019-01-04 | 2019-07-23 | King Saud University | Synthesis of zinc oxide nanoparticles using Cymbopogon proximus extract |
| CN110563015B (en) * | 2019-09-27 | 2022-03-29 | 河北立信化工有限公司 | Preparation method of light calcium carbonate for food |
| CN112514685A (en) * | 2020-12-04 | 2021-03-19 | 安徽强茗塑业科技有限公司 | Reinforced grass planting grid and preparation method thereof |
| CN114028604B (en) * | 2021-11-08 | 2022-06-21 | 山东省科学院生物研究所 | Multi-component wound repair hemostasis dressing based on polymerized amino acid and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103897434A (en) * | 2014-04-19 | 2014-07-02 | 芮城新泰纳米材料有限公司 | Method for preparing special nano calcium carbonate for plastic master batch |
| CN104087024A (en) * | 2014-06-06 | 2014-10-08 | 凤台县精华助剂有限公司 | Modified calcium carbonate with antibacterial and antioxidation effects and preparing method thereof |
| CN105694316A (en) * | 2016-04-14 | 2016-06-22 | 叶青 | Chlorinated polyvinyl chloride water supply pipe |
-
2017
- 2017-09-30 CN CN201710915889.XA patent/CN107556529B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103897434A (en) * | 2014-04-19 | 2014-07-02 | 芮城新泰纳米材料有限公司 | Method for preparing special nano calcium carbonate for plastic master batch |
| CN104087024A (en) * | 2014-06-06 | 2014-10-08 | 凤台县精华助剂有限公司 | Modified calcium carbonate with antibacterial and antioxidation effects and preparing method thereof |
| CN105694316A (en) * | 2016-04-14 | 2016-06-22 | 叶青 | Chlorinated polyvinyl chloride water supply pipe |
Non-Patent Citations (1)
| Title |
|---|
| "谷氨酸接枝纳米碳酸钙的合成";刘晓红 等;《南昌大学学报( 工科版)》;20160630;第38卷(第2期);第118-121页 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107556529A (en) | 2018-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107556529B (en) | A kind of method of modifying of nanometer calcium carbonate and its application on food fresh keeping membrane | |
| El-Samahy et al. | Synthesis of hybrid paper sheets with enhanced air barrier and antimicrobial properties for food packaging | |
| CN103652891B (en) | Lactobacillus casei embedding microcapsule and preparation method thereof | |
| CN104194064B (en) | Corn starch composite membrane as well as preparation method and applications thereof | |
| CN104775587B (en) | A kind of green non-pollution is except the PVC wallpaper of formaldehyde | |
| CN108752884A (en) | A kind of high antibiotic property PLA/PBAT materials and the preparation method and application thereof | |
| CN107955238B (en) | Ultrathin butyronitrile latex glove and preparation method thereof | |
| CN107029669B (en) | Application of carbon dioxide absorbent for storage and transportation of fruits and vegetables in storage of fruits and vegetables | |
| CN101817939A (en) | Venting, self-cleaning and degradable environmental-friendly preservative film and preparation method thereof | |
| CN110318252A (en) | A kind of composite material and preparation method and application of spiral nanometer carbon fiber area load zinc oxide particles | |
| CN115651376B (en) | Compostable antibacterial material for recyclable packaging products and preparation method thereof | |
| CN109942940A (en) | A kind of food-grade environmental protection can natural degradation polybag | |
| CN107964147A (en) | A kind of preparation method of ventilated membrane | |
| CN110511544A (en) | A kind of biodegradable breathable composite film and preparation method thereof | |
| CN106714850B (en) | Deodorant and deodorizing products | |
| CN109577100A (en) | It is a kind of can photooxidation droping polyethylene leaching membrane paper and the preparation method and application thereof | |
| CN107266876A (en) | A kind of functional living being degradative plastic film and preparation method and application | |
| KR20210137320A (en) | Freshness- maintaining packaging film with antimicrobial properties, and manufacturing method thereof | |
| CN101497713B (en) | Micropore preservative film | |
| Feng et al. | Antibacterial, antioxidant and fruit packaging ability of biochar-based silver nanoparticles-polyvinyl alcohol-chitosan composite film | |
| CN104974490A (en) | Preservative film, preparation and application | |
| CN103058243B (en) | Nanometer calcium oxide and application thereof | |
| CN115368602A (en) | Preparation method of carbon nitride based green light catalytic preservative film | |
| CN109233491A (en) | A kind of diatom ooze | |
| CN115179379A (en) | Preparation method of food-grade antibacterial and mildewproof wood |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |