CN110746721A - Calcined zeolite powder, preparation method thereof and application thereof in plastics - Google Patents
Calcined zeolite powder, preparation method thereof and application thereof in plastics Download PDFInfo
- Publication number
- CN110746721A CN110746721A CN201911201517.6A CN201911201517A CN110746721A CN 110746721 A CN110746721 A CN 110746721A CN 201911201517 A CN201911201517 A CN 201911201517A CN 110746721 A CN110746721 A CN 110746721A
- Authority
- CN
- China
- Prior art keywords
- calcined zeolite
- zeolite powder
- calcined
- powder
- functional
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a preparation method of calcined zeolite powder, the calcined zeolite powder prepared by the preparation method, application of the calcined zeolite powder in producing plastic products, functional calcined zeolite filling master batch containing the calcined zeolite powder and a preparation method of the functional calcined zeolite filling master batch. According to the invention, the calcined zeolite is applied to the plastic product, so that the calcined zeolite has a good adsorption effect, can adsorb harmful gas or smell, can increase the strength of the plastic product, can reduce the weight of the plastic product compared with the case of adding other inorganic powder under the same condition, saves the cost, and has a good industrial application value.
Description
Technical Field
The invention relates to calcined zeolite powder, a preparation method thereof and application thereof in plastics, in particular to a preparation method of calcined zeolite powder, the calcined zeolite powder prepared by the preparation method, application of the calcined zeolite powder in producing plastic products, functional calcined zeolite filling master batches containing the calcined zeolite powder and a preparation method of the functional calcined zeolite filling master batches, belonging to the field of zeolite materials.
Background
The natural zeolite is inorganic mineral rock formed after the cooling and deposition of rock slurry and volcanic ash sprayed by ancient volcanic ash in the earth crust for several years. The chemical composition of the zeolite is an aluminosilicate. There are many kinds of natural zeolites, such as clinoptilolite, mordenite, chabazite, laumontite, analcime, etc., which have substantially the same chemical composition, except that the ratio of aluminum to silicon in the aluminosilicate is different.
The natural zeolite has a unique internal structure and is a porous reticular body, the volume of holes accounts for more than 50 percent of the total volume, the specific surface area is extremely large and is about 400-1000 m2The water content is 20-30 times of that of common active carbon, the natural water content is about 13-15% of the self weight, and the water-soluble organic carbon has strong adsorption effect and ion exchange capacity.
Based on the above characteristics of zeolite, it is widely used in the fields of air purification, sewage treatment, dry dewatering, soil improvement, animal feed, slow-release fertilizer, medicine, and the like.
The zeolite also has a catalyst function and is applied to the fields of petroleum cracking, automobile exhaust purification, radioactive ray absorption and the like.
The zeolite resources in China are rich and almost all the provinces exist, but the development and utilization of the zeolite resources are laggard behind those of other countries, and the realization of the zeolite resources is a matter after the reformation and the opening of the zeolite resources. At present, the application is more successful in the field of sewage treatment, such as sewage purification of Yunnan Yunan. In addition, the agricultural application is more successful, such as feed additives, compound long-acting fertilizers and the like. The countries where the use of zeolite has been successful abroad include russia, usa, japan, and the like.
The calcined zeolite is mainly used for removing natural water in the zeolite, and the water content of the zeolite is about 13-15% of the weight of the zeolite. Water is the most harmful substance in the plastic processing process, the temperature is generally 160-240 ℃ in the plastic processing process, the water is converted into steam, bubbles are generated in products, and the appearance and the strength and the quality of the products are influenced. Therefore, in order to apply the zeolite material to plastics, it is necessary to remove water.
In addition, the natural zeolite can remove impurities adsorbed on the surface of the internal reticular structure in the calcining process, increase the specific surface area and improve the adsorption force.
Disclosure of Invention
The invention aims to provide a preparation method of calcined zeolite powder, the calcined zeolite powder prepared by the preparation method, application of the calcined zeolite powder in producing plastic products, functional calcined zeolite filling master batches containing the calcined zeolite powder and a preparation method of the functional calcined zeolite filling master batches. According to the invention, the calcined zeolite is applied to the plastic product, so that the calcined zeolite has a good adsorption effect, can adsorb harmful gas or smell, can increase the strength of the plastic product, can reduce the weight of the plastic product compared with the case of adding other inorganic powder under the same condition, saves the cost, and has a good industrial application value.
In order to achieve the purpose, the invention adopts the following technical means:
the invention provides a preparation method of calcined zeolite powder, which comprises the following steps:
(1) crushing boiling ore into irregular crushed stone blocks, and placing the irregular crushed stone blocks in a net-shaped container made of iron, wherein the bottom of the container is an iron plate to prevent small stone blocks generated in the calcining process from leaking into a kiln;
(2) hanging the container filled with the stones in a cableway type rotary tunnel kiln, and calcining for 15-20 min at 200-400 ℃;
(3) and taking out the calcined stone, cooling, bagging, sealing, conveying to a ball mill or a roller mill, crushing, and immediately packaging to obtain the finished product.
Preferably, the particle size of the irregular fragments in the step (1) is 10-15 cm.
Preferably, the volume of the reticular container in the step (1) is 0.1-0.15 m3The thickness of the iron plate is 0.3-0.4 cm.
Preferably, the calcination in step (2) is calcination at 300 ℃ using natural gas. If the calcination temperature is lower than 200 ℃, water and impurities in the internal microporous structure of the zeolite cannot be effectively removed; if the calcination temperature is higher than 400 ℃, the internal microporous structure of the zeolite is deformed and even collapsed.
Preferably, the cooling in the step (3) is to cool the mixture to 40-50 ℃, and the crushing is to crush the mixture into 800-1250-mesh powder.
The invention also provides the calcined zeolite powder prepared by the preparation method.
The invention also provides the application of the calcined zeolite powder in the production of plastic products.
Preferably, the application is to add 4-5% w/w of the calcined zeolite powder in a PVC soft product. When PVC resin is used for producing soft products (such as artificial leather or wallpaper and the like), more than 10 additives such as a plasticizer, an antioxidant, a heat stabilizer, a light stabilizer and the like need to be added in a formula, wherein the dosage of the plasticizer is the maximum and is about 20-25% w/w of the resin, the plasticizer is a phthalate ester compound, and all aromatic (benzene series) ester compounds have large odor and are harmful to human bodies. Under the condition that the original formula is not changed, 4-5% w/w of the calcined zeolite powder can be added to remove odor, otherwise, the odor is remained in the product for more than half a year or longer.
The invention also provides a functional calcined zeolite filling master batch containing the calcined zeolite powder, which consists of the following components in percentage by weight: 70-85% of the calcined zeolite powder, 1-5% of stearic acid, 1-5% of solid paraffin, 1-5% of polyethylene wax (PE wax), 10-15% of Low Density Polyethylene (LDPE) or Linear Low Density Polyethylene (LLDPE) with a melt index of 6-12.
Preferably, the functional calcined zeolite filling master batch consists of the following components in percentage by weight: 80% of the calcined zeolite powder of the invention, 2% of stearic acid, 2% of paraffin wax, 3% of polyethylene wax (PE wax), 13% of Low Density Polyethylene (LDPE) or Linear Low Density Polyethylene (LLDPE) having a melt index of 6-12.
The invention also provides a preparation method of the functional calcined zeolite filling master batch, which comprises the following steps:
plasticating the components in an internal mixer for 15-20 min, automatically transferring the materials into a hopper of a single-screw extruder after the materials are in a dough shape, extruding and granulating at 140-160 ℃, and sealing and packaging while hot to obtain the finished product.
Compared with the prior art, the invention has the beneficial effects that:
1. the calcined zeolite powder has low density, and compared with other inorganic powder added in the same proportion, the prepared plastic product has light weight, saves raw materials and reduces cost.
2. The calcined zeolite powder has a porous structure and a large specific surface area, and the excellent adsorption capacity of the calcined zeolite powder can remove harmful odor or harmful gas in a plastic product, and can also enable a resin material to enter the microporous structure of the plastic product, so that the strength of the plastic product is improved by combining the resin material and the microporous structure.
Detailed Description
The invention will be further described with reference to specific embodiments, and the advantages and features of the invention will become apparent as the description proceeds. These examples are illustrative only and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications may be made without departing from the spirit and scope of the invention.
Example 1
Preparing a calcined zeolite powder by:
(1) firstly crushing boiling ore into irregular broken stone blocks with the grain diameter of 10-15 cm, and loading the irregular broken stone blocks with the capacity of 0.1m made of iron3The bottom of the container is an iron plate with the thickness of 0.3cm, so that small stone blocks generated in the calcining process are prevented from leaking into the kiln;
(2) hanging the container filled with stones in a cableway type rotary tunnel kiln, and calcining for 20min at 300 ℃ by using natural gas;
(3) and (3) taking out the calcined stone, cooling to 40-50 ℃, bagging and sealing, conveying to a ball mill or a roller mill, crushing into 1250-mesh powder, and immediately subpackaging in 25kg double-layer sealed plastic bags to obtain the finished product.
Example 2
Preparing a calcined zeolite powder by:
(1) firstly crushing boiling ore into irregular broken stone blocks with the grain diameter of 10-15 cm, and loading the irregular broken stone blocks with the capacity of 0.15m made of iron3The bottom of the container is an iron plate with the thickness of 0.3cm, so that small stone blocks generated in the calcining process are prevented from leaking into the kiln;
(2) hanging the container filled with stones in a cableway type rotary tunnel kiln, and calcining for 15min at 200 ℃ by using natural gas;
(3) and (3) taking out the calcined stone, cooling to 40-50 ℃, bagging and sealing, conveying to a ball mill or a roller mill, crushing into 800-mesh powder, and immediately subpackaging in 25kg double-layer sealed plastic bags to obtain the finished product.
Example 3
Preparing a calcined zeolite powder by:
(1) firstly crushing boiling ore into irregular broken stone blocks with the grain diameter of 10-15 cm, and loading the irregular broken stone blocks with the capacity of 0.1m made of iron3The bottom of the container is an iron plate with the thickness of 0.4cm, so that small stone blocks generated in the calcining process are prevented from leaking into the kiln;
(2) hanging the container filled with the stones in a cableway type rotary tunnel kiln, and calcining for 15min at 350 ℃ by using natural gas;
(3) and (3) taking out the calcined stone, cooling to 40-50 ℃, bagging and sealing, conveying to a ball mill or a roller mill, crushing into 900-mesh powder, and immediately subpackaging in 25kg double-layer sealed plastic bags to obtain the finished product.
Example 4
Preparing a calcined zeolite powder by:
(1) firstly crushing boiling ore into irregular broken stone blocks with the grain diameter of 10-15 cm, and loading the irregular broken stone blocks with the capacity of 0.15m made of iron3The bottom of the container is an iron plate with the thickness of 0.4cm, so that small stone blocks generated in the calcining process are prevented from leaking into the kiln;
(2) hanging the container filled with stones in a cableway type rotary tunnel kiln, and calcining for 20min at 400 ℃ by using natural gas;
(3) and (3) taking out the calcined stone, cooling to 40-50 ℃, bagging and sealing, conveying to a ball mill or a roller mill, crushing into 1000-mesh powder, and immediately subpackaging in 25kg double-layer sealed plastic bags to obtain the finished product.
Example 5
The calcined zeolite powder prepared in the embodiment 1 of the invention is added in 4% w/w in the formula of PVC soft products (such as artificial leather or wallpaper and the like), and the finished product is prepared according to the preparation method in the prior art.
Example 6
Preparing a functional calcined zeolite filler masterbatch by:
(1) preparing the following components in percentage by weight:
80% of the calcined zeolite powder prepared in inventive example 1, 2% of stearic acid, 2% of paraffin wax, 3% of polyethylene wax (PE wax), 13% of Low Density Polyethylene (LDPE) or Linear Low Density Polyethylene (LLDPE) having a melt index of 8;
(2) the preparation method comprises the steps of plasticating the components in a 110-liter internal mixer with the total feeding amount of 180-200 kg per pot for 15-20 min, melting resin by using heat generated by plastication, enabling the temperature to be 150-160 ℃ generally, automatically transferring the materials into a hopper of a single-screw extruder after the materials are in a dough shape, extruding and granulating at the temperature of 140-160 ℃, and sealing and packaging the materials into 25kg double-layer plastic bags when the materials are hot to obtain the finished product.
Experimental example 1 fresh-keeping function test of plastic film blown from functional calcined zeolite-filled masterbatch of the present invention
In order to promote the products to appear on the market, fruit growers or vegetable growers often spray a ripening agent, ethephon, on fruits or vegetables. The ethephon is decomposed in the air to generate ethylene, so that the fruits or the vegetables can be ripened in advance, and the ethylene has the function of ripening and can accelerate the deterioration and the decay of the ripened fruits or vegetables. The calcined zeolite powder can adsorb ethylene, prevent or relieve rot of fruits or vegetables, and play a role in preservation.
Separately 20% w/w of the polyethylene resin prepared in example 6 of the present inventionThe obtained functional calcined zeolite filling master batch and CaCO3Filled masterbatch, said CaCO3The filled masterbatch was prepared by a similar method to that of inventive example 6, except that the calcined zeolite powder used in example 6 was replaced with CaCO of the same particle size3And (3) pulverizing. Under the same processing conditions, plastic films with the same thickness were blown, named functional film and ordinary film, respectively, and the following experiment was performed under the conditions of 25 ℃, air humidity and ventilation conditions, which were completely the same.
1. Experiment on preservation of bananas
The bags made of two plastic films were filled with 2kg of the same ripe banana, respectively, and stored hermetically, with the following results:
general film: after 5 days the banana peel became black and after 8 days it started to rot.
Functional film: after 10 days the banana peels started to spot, the peels turned black for 16 days and started to rot for 20 days.
2. Experiment on fresh-keeping tomato
Bags made of two plastic films were filled with 2kg of the same ripe tomatoes, respectively, and stored in a sealed state, resulting in the following results:
general film: tomatoes begin to rot in 16 days.
Functional film: there was essentially no change for 25 days.
Experimental example 2 weight reduction (weight reduction) enhancement (strength increase) function test of the calcined zeolite powder of the present invention in plastic articles
1. The density of the calcined zeolite powder prepared in the embodiment 1 of the invention is 2.0-2.1 g/cm3And other inorganic powders such as CaCO3The density of the powder, the talcum powder and the like (which are fillers commonly added in the plastic production) is 2.7-2.9 g/cm3Therefore, under the condition of adding the same proportion, the density of the plastic product added with the calcined zeolite powder is smaller, the weight of the plastic product can be reduced, and the cost can be reduced.
2. The surface of the calcined zeolite powder prepared in the embodiment 1 of the invention is in an irregular micropore structure, resin can enter micropores on the surface of zeolite due to shearing and extrusion of a screw machine in a molten state, the bonding force of the resin and the zeolite is increased, and the strength of a plastic product prepared by adding the calcined zeolite powder is higher than that of a plastic product prepared by adding common inorganic powder under the conditions of the same mesh number and the same addition proportion.
20% w/w of the filler masterbatch of the calcined zeolite and CaCO prepared in example 6 of the present invention were added to a High Density Polyethylene (HDPE) resin of the same type3Filled masterbatch, said CaCO3The filled masterbatch was prepared by a similar method to that of inventive example 6, except that the calcined zeolite powder used in example 6 was replaced with CaCO of the same particle size3And (3) pulverizing. Under identical conditions, standard bars were injection molded and tested for relevant properties, with the results shown in table 1 below:
TABLE 1
Claims (10)
1. A preparation method of calcined zeolite powder is characterized by comprising the following steps:
(1) crushing boiling ore into irregular crushed stone blocks, and placing the irregular crushed stone blocks in a net-shaped container made of iron, wherein the bottom of the container is an iron plate to prevent small stone blocks generated in the calcining process from leaking into a kiln;
(2) hanging the container filled with the stones in a cableway type rotary tunnel kiln, and calcining for 15-20 min at 200-400 ℃;
(3) and taking out the calcined stone, cooling, bagging, sealing, conveying to a ball mill or a roller mill, crushing, and immediately packaging to obtain the finished product.
2. The method according to claim 1, wherein the irregular fragments in step (1) have a particle size of 10 to 15 cm.
3. The method according to claim 1, wherein the mesh container in the step (1) has a capacity of 0.1 to 0.15m3The thickness of the iron plate is 0.3-0.4 cm.
4. The method according to claim 1, wherein the calcination in the step (2) is calcination at 300 ℃ using natural gas.
5. The method according to claim 1, wherein the cooling in the step (3) is carried out to a temperature of 40 to 50 ℃, and the pulverization is carried out to a powder of 800 to 1250 mesh.
6. A calcined zeolite powder produced by the production method according to any one of claims 1 to 5.
7. Use of the calcined zeolite powder of claim 6 in the production of plastic articles.
8. The use according to claim 7, wherein the use is to add 4-5% w/w of the calcined zeolite powder of the present invention to a PVC soft product to remove the harmful odor of the auxiliary agent in the PVC soft product.
9. The functional calcined zeolite filler masterbatch comprising the calcined zeolite powder of claim 6, characterized by consisting of the following components in weight percent: 70-85% of the calcined zeolite powder, 1-5% of stearic acid, 1-5% of solid paraffin, 1-5% of polyethylene wax and 10-15% of low-density polyethylene or linear low-density polyethylene with a melt index of 6-12; preferably, the functional calcined zeolite filling master batch consists of the following components in percentage by weight: 80% of the calcined zeolite powder, 2% of stearic acid, 2% of solid paraffin, 3% of polyethylene wax and 13% of low-density polyethylene or linear low-density polyethylene with the melt index of 6-12.
10. The method of preparing the functional calcined zeolite filler masterbatch of claim 9, comprising the steps of:
plasticating the composition of claim 9 in an internal mixer for 15-20 min, automatically transferring the material into a hopper of a single-screw extruder after the material is in a dough shape, extruding and granulating at 140-160 ℃, and sealing and packaging while hot to obtain a finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911201517.6A CN110746721A (en) | 2019-11-29 | 2019-11-29 | Calcined zeolite powder, preparation method thereof and application thereof in plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911201517.6A CN110746721A (en) | 2019-11-29 | 2019-11-29 | Calcined zeolite powder, preparation method thereof and application thereof in plastics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110746721A true CN110746721A (en) | 2020-02-04 |
Family
ID=69285170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911201517.6A Pending CN110746721A (en) | 2019-11-29 | 2019-11-29 | Calcined zeolite powder, preparation method thereof and application thereof in plastics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110746721A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005111120A1 (en) * | 2004-05-14 | 2005-11-24 | Ineos Silicas Limited | Masterbatch compositions |
| CN1844221A (en) * | 2006-04-11 | 2006-10-11 | 山西新阳新材料有限公司 | Functional white color masterbatch and its preparation process and use |
| CN204346087U (en) * | 2014-12-19 | 2015-05-20 | 宜宾恒旭窑炉科技开发有限公司 | The motionless brick of kiln moves spin-tunnel kiln |
| CN105202924A (en) * | 2015-10-29 | 2015-12-30 | 三门峡市盛源材料工程有限公司 | Heat-insulating lining of rotary tunnel kiln |
| CN105401458A (en) * | 2015-10-27 | 2016-03-16 | 芜湖市鸿坤汽车零部件有限公司 | Deodorized PVC synthetic leather and production method thereof |
| CN206556412U (en) * | 2017-02-07 | 2017-10-13 | 广元市朝天区朝天镇第二小学 | A kind of spin-tunnel kiln |
| CN108676256A (en) * | 2018-06-11 | 2018-10-19 | 全椒祥瑞塑胶有限公司 | A kind of polypropylene material of low formaldehyde emission concentration |
-
2019
- 2019-11-29 CN CN201911201517.6A patent/CN110746721A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005111120A1 (en) * | 2004-05-14 | 2005-11-24 | Ineos Silicas Limited | Masterbatch compositions |
| CN1844221A (en) * | 2006-04-11 | 2006-10-11 | 山西新阳新材料有限公司 | Functional white color masterbatch and its preparation process and use |
| CN204346087U (en) * | 2014-12-19 | 2015-05-20 | 宜宾恒旭窑炉科技开发有限公司 | The motionless brick of kiln moves spin-tunnel kiln |
| CN105401458A (en) * | 2015-10-27 | 2016-03-16 | 芜湖市鸿坤汽车零部件有限公司 | Deodorized PVC synthetic leather and production method thereof |
| CN105202924A (en) * | 2015-10-29 | 2015-12-30 | 三门峡市盛源材料工程有限公司 | Heat-insulating lining of rotary tunnel kiln |
| CN206556412U (en) * | 2017-02-07 | 2017-10-13 | 广元市朝天区朝天镇第二小学 | A kind of spin-tunnel kiln |
| CN108676256A (en) * | 2018-06-11 | 2018-10-19 | 全椒祥瑞塑胶有限公司 | A kind of polypropylene material of low formaldehyde emission concentration |
Non-Patent Citations (1)
| Title |
|---|
| 孙传尧: "《选矿工程师手册（第4册） 下卷：选矿工业实践》", 31 March 2015 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102093588B (en) | Composite foaming agent and preparation method and application thereof | |
| EP2682421B1 (en) | Method for producing reinforced hybrid composite polyethylene plastics | |
| CN101805474A (en) | Fruit and vegetable shelf small package bag film and manufacture method | |
| CN107723842B (en) | A kind of woven bag flat filament and preparation method thereof | |
| CN113185820B (en) | Degradable packaging material, packaging film bag and preparation method | |
| CN104530529B (en) | Preparation method of plastic-wood composite material | |
| CN103819833A (en) | Preparation method of antimicrobial packing bag for grains | |
| JP2003145534A (en) | Method for manufacturing biodegradable resin | |
| CN104003488A (en) | Compound antibacterial activated carbon rod and preparation method thereof | |
| CN111941974A (en) | High-permeability mildew-proof antibacterial preservative film capable of removing ethylene and carbon dioxide | |
| CN108503932A (en) | A kind of fresh-keeping particle and preparation method thereof for manufacturing film or plastic uptake sheet material | |
| CN102000541B (en) | Spongy bentonite-based composite adsorbing material and preparation method thereof | |
| CN103819783A (en) | Preparation method of freshness-keeping package material capable of strongly replacing gas | |
| CN110746721A (en) | Calcined zeolite powder, preparation method thereof and application thereof in plastics | |
| EP1587858B1 (en) | Polyethylene composition for the production of peroxide crosslinked polyethylene | |
| CN109679307A (en) | A kind of biodegradable pearl cotton and preparation method thereof | |
| KR101494381B1 (en) | Method for preparing functional food packaging including iron-coated zeolite | |
| CN107200915A (en) | A kind of high ventilating preservative film of pear | |
| CN101473847A (en) | Composite anti-bacteria agent as well as preparation method and use thereof | |
| CN106633975A (en) | A degradable flowerpot having a high wood fiber content and a manufacturing method thereof | |
| CN103331834A (en) | Manufacturing method of plastic regenerative particles | |
| CN106634007A (en) | Plastic package for fish and shrimp live transportation and preparation method of plastic package | |
| KR101740656B1 (en) | Preparation method of thermoplastic resin composition and thermoplastic resin composition prepared thereby | |
| CN104693826A (en) | Degradable filling material and preparation method of degradable filling material | |
| CN109265939A (en) | One kind wire rod of 3D printing containing peanut shell powder and preparation method thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200204 |
|
| RJ01 | Rejection of invention patent application after publication |