CN112940297A - Nylon heat insulation strip master batch drying method - Google Patents
Nylon heat insulation strip master batch drying method Download PDFInfo
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- CN112940297A CN112940297A CN202110317064.4A CN202110317064A CN112940297A CN 112940297 A CN112940297 A CN 112940297A CN 202110317064 A CN202110317064 A CN 202110317064A CN 112940297 A CN112940297 A CN 112940297A
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- master batch
- heat insulation
- nylon heat
- liquid
- insulation strip
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- 239000004677 Nylon Substances 0.000 title claims abstract description 79
- 229920001778 nylon Polymers 0.000 title claims abstract description 79
- 239000004594 Masterbatch (MB) Substances 0.000 title claims abstract description 72
- 238000009413 insulation Methods 0.000 title claims abstract description 64
- 238000001035 drying Methods 0.000 title claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 56
- 238000003756 stirring Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000000605 extraction Methods 0.000 claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 238000007873 sieving Methods 0.000 claims abstract description 8
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000292 calcium oxide Substances 0.000 claims abstract description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 239000004264 Petrolatum Substances 0.000 claims description 3
- 239000003963 antioxidant agent Substances 0.000 claims description 3
- 230000003078 antioxidant effect Effects 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 239000004088 foaming agent Substances 0.000 claims description 3
- 229940066842 petrolatum Drugs 0.000 claims description 3
- 235000019271 petrolatum Nutrition 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 3
- 239000008158 vegetable oil Substances 0.000 claims description 3
- 229910001868 water Inorganic materials 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000861 blow drying Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010128 melt processing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- 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
- C08J3/12—Powdering or granulating
- C08J3/128—Polymer particles coated by inorganic and non-macromolecular organic 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
- 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
- C08J3/223—Packed additives
-
- 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
- C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
-
- 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
- C08K2201/011—Nanostructured additives
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a method for drying master batches of nylon heat insulation strips, and belongs to the field of processing of master batches of nylon heat insulation strips. The method comprises the following steps: putting the nylon heat insulation strip master batch into a closed container with a built-in stirring mechanism and an external negative pressure component, preparing liquid A, stirring the liquid A for 5-10min, pouring the liquid A into the closed container, and stirring the liquid A and the nylon heat insulation strip master batch by using the stirring mechanism; step two: the negative pressure component performs negative pressure air extraction on the closed container, and then gas is introduced to restore the air pressure of the closed container to an initial state; step three: repeating the negative pressure air extraction and the gas introduction in the second step for a plurality of times, and introducing the nano calcium oxide powder and the gas into the closed container when the last negative pressure air extraction is finished; step four: sieving to remove attachments on the surface of the nylon heat insulation strip master batch, and horizontally twisting the master batch by the two horizontal plates. The drying method of the master batch of the nylon heat insulation strip can fully dry the master batch.
Description
Technical Field
The invention relates to a method for drying master batches of nylon heat insulation strips, and belongs to the field of processing of master batches of nylon heat insulation strips.
Background
The nylon heat insulation strip master batch (the master batch is the nylon heat insulation strip master batch) has certain hydroscopicity, and the external moisture can be absorbed in the process of placing, and the glossiness of the surface of a product can be influenced by the moisture in the melt processing, and water can degrade partial components in the nylon heat insulation strip master batch, so that the stability and the viscosity of the interior of the nylon heat insulation strip master batch are reduced to some extent, and the physical performance of the nylon heat insulation strip master batch is influenced. The conventional nylon heat insulation strip master batch is usually dried by wind power or heated and evaporated to remove water in the nylon heat insulation strip master batch, however, the method can cause the situation that the nylon heat insulation strip master batch cannot be completely dewatered more or less, or the property of partial master batch is changed in the dewatering process.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method for drying the master batches of the nylon heat insulation strips solves the problems of incomplete dehydration or change of physical and chemical properties of the master batches of the nylon heat insulation strips in the conventional drying process of the master batches of the nylon heat insulation strips.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a method for drying master batches of nylon heat insulation strips comprises the following steps: putting the master batch of the nylon heat-insulating strip into a closed container with a built-in stirring mechanism and an external negative pressure component to prepare liquid A,
the liquid A comprises the following components in parts by weight:
5-10 parts of deionized water, 3-5 parts of petrolatum, 1-2 parts of antioxidant, 3-5 parts of foaming agent, 20-30 parts of modified vegetable oil and 20-30 parts of ethyl acetate;
stirring the liquid A for 5-10min, pouring into a closed container, stirring the liquid A and the nylon heat insulation strip master batch by using a stirring mechanism, and stirring for 20-40 min;
step two: after stirring is finished, the negative pressure component performs negative pressure air extraction on the closed container, and then gas is introduced to restore the air pressure of the closed container to an initial state;
step three: repeating the negative pressure air extraction and the gas introduction in the second step for a plurality of times, introducing the nano calcium oxide powder and the gas into the closed container together when the last negative pressure air extraction is finished, operating the stirring mechanism, and stopping stirring for 5-10 min;
step four: the method comprises the following steps of moving the nylon heat insulation strip master batch out of a closed container, sieving to remove attachments on the surface of the nylon heat insulation strip master batch, placing the nylon heat insulation strip master batch between an upper horizontal plate body and a lower horizontal plate body, fixedly connecting a brush to the upper end face and the lower end face of the upper horizontal plate body, enabling the upper horizontal plate body to horizontally reciprocate when the two horizontal plate bodies are close to each other, and horizontally twisting the master batch by the two horizontal plate bodies.
As a preferable example, the volume ratio of the liquid A when the preparation is completed, the volume when the liquid A is poured into the closed container after stirring and the volume when the closed container is evacuated by negative pressure is 1: 1.05-1.1: 1.4 to 1.6.
Preferably, the ratio of the mass of the liquid A to the mass of the nylon heat insulating strip master batch put into the closed container is 3 to 5: 13.
As a preferable example, the mass ratio of the nylon heat insulating strip master batch before drying to the nylon heat insulating strip master batch after drying is more than 1.01:1, such as less than 1: 1.01, the sieving and the horizontal rubbing in the fourth step are repeated.
As a preferred example, the pressure of the negative pressure component is adjusted to be not more than 30% of the original pressure in the inner cavity of the closed container.
As a preferred example, when the two horizontal plate bodies are horizontally twisted, the distance between the two horizontal plate bodies is larger than the particle size of the single nylon heat insulation strip master batch and smaller than the particle size of the two nylon heat insulation strip master batches.
The invention has the beneficial effects that: in the drying method of the nylon heat insulation strip, the liquid A is mixed into the surface of the master batch of the nylon heat insulation strip, the surface of the master batch of the nylon heat insulation strip is provided with the protective film, meanwhile, the liquid A is mixed with bubbles in the liquid A after being stirred before use, after the closed container is subjected to air extraction operation by the negative pressure component, the volume of the bubbles in the liquid A is increased, the surface hollow area which is not covered on the surface of the master batch of the nylon heat insulation strip or the area containing water in the hollow area is subjected to diffusion of the liquid A, the protective film is formed on the surface of the master batch of the nylon heat insulation strip, the nano calcium oxide can react with the water on the surface of the nylon heat insulation strip to release heat, the protective film formed on the surface of the master batch of the nylon heat insulation strip by the liquid A, the master batch of the nylon heat insulation strip is subjected to buffer protection when being heated, and, and after the master batches fall off, substances on the surfaces of the nylon heat insulation strip master batches fall off after sieving and shaking and horizontal twisting of the horizontal plate body, so that the drying of the nylon heat insulation strip master batches is realized.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purpose and the efficacy of the invention easily understood, the invention is further described with reference to the following embodiments.
A method for drying master batches of nylon heat insulation strips comprises the following steps: putting the master batch of the nylon heat-insulating strip into a closed container with a built-in stirring mechanism and an external negative pressure component to prepare liquid A,
the liquid A (the liquid A is oily liquid) comprises the following components in parts by weight:
5 parts of deionized water, 3 parts of petrolatum, 1 part of antioxidant, 3 parts of foaming agent, 20 parts of modified vegetable oil and 20 parts of ethyl acetate;
stirring the liquid A for 5min (namely the liquid A contains a certain amount of bubbles inside), pouring the liquid A into a closed container, stirring the liquid A and the nylon heat insulation strip master batch by using a stirring mechanism, and stirring for 20 min;
step two: after stirring is finished, the negative pressure component performs negative pressure air extraction on the closed container, and then gas is introduced to restore the air pressure of the closed container to an initial state;
step three: repeating the negative pressure air extraction and the gas introduction in the second step three times, introducing the nano calcium oxide powder (excessive) and the gas into the closed container together when the last negative pressure air extraction is finished, operating the stirring mechanism, and stopping stirring for 5 min;
step four: the method comprises the following steps of moving the nylon heat insulation strip master batch out of a closed container, sieving to remove attachments on the surface of the nylon heat insulation strip master batch (the attachments are a mixture of liquid A, water, calcium oxide, calcium hydroxide and the like), placing the nylon heat insulation strip master batch between an upper horizontal plate body and a lower horizontal plate body, fixedly connecting a brush to the bottom end face of the upper horizontal plate body, moving the upper horizontal plate body to and fro in the horizontal direction when the two horizontal plate bodies are close to each other, and horizontally twisting the master batch by the two horizontal plate bodies (further removing the attachments on the surface of the nylon heat insulation strip master batch).
The volume of the liquid A after preparation, the volume of the liquid A after stirring and when the liquid A is poured into the closed container and the volume ratio of the liquid A when the closed container is subjected to negative pressure pumping are 1: 1.05: 1.4, liquid A mixes a small amount of gas after the stirring, therefore liquid A occupies the space increase, and in the negative pressure air extraction process, liquid A can make the space of self further increase because the bubble volume of inside increases.
The ratio of the mass of the liquid A to the mass of the nylon heat insulation strip master batch put into the closed container is 3:13 (the mass of the liquid A determines that the volume of the liquid A when the liquid A is not stirred is about one third of the volume of the master batch, and a certain gap exists in the stacking of the master batch, namely the volume of the liquid A when the liquid A is not stirred is less than or equal to one fourth of the space volume of the master batch used for stacking in the container).
The mass ratio of the master batch of the nylon heat insulation strip before drying to the master batch after drying is more than 1.01:1, such as less than 1: 1.01 (namely, the adhesive on the surface of the nylon heat insulation strip master batch still has more residues, which is not beneficial to the storage and further use of the nylon heat insulation strip master batch), the sieving and the horizontal twisting in the fourth step are repeated, and trace amount of adhesive on the surface of the nylon heat insulation strip master batch is formed.
The range of negative pressure subassembly pressure adjustment is no longer than the original pressured 30% of airtight container inner chamber, and the power when negative pressure subassembly bleeds is not suitable too big, and liquid A breaks easily at the protective film of nylon heat insulating strip master batch surface formation otherwise, and if when there is the hole inside the nylon heat insulating strip master batch, the too big nylon heat insulating strip master batch self that leads to of negative pressure bleed power breaks to in the drying process afterwards, wear and tear the nylon heat insulating strip master batch and lead to nylon heat insulating strip master batch quality reduction after the drying.
When two horizontal plates are horizontally rubbed, the distance between the two horizontal plates (the distance is the distance between the final two horizontal plates) is larger than the particle size of a single nylon heat-insulating strip master batch and smaller than the particle sizes of the two nylon heat-insulating strip master batches, when the two horizontal plates are rubbed with the nylon heat-insulating strip master batches, a certain distance (more than twice of the particle size of the master batches) exists between the two horizontal plates in an initial state, the nylon heat-insulating strip master batches are poured into the middle part of the horizontal plate below after being screened, the horizontal plate above starts to move downwards, namely, the distance between the two horizontal plates gradually decreases, in the process of decreasing, the horizontal plate above starts to reciprocate in the horizontal direction, the master batches stacked on the horizontal plate below start to be extruded and are in a flat state, and a brush is fixedly connected to the bottom end face on the horizontal plate above, removing the particles and the protective film attached to the surface of the master batch.
The working principle is as follows: the liquid A is used for buffering and protecting the master batches, so that the master batches are prevented from being worn obviously in the stirring process when being stirred in a closed container, when the closed container is pumped and is in a negative pressure state, the liquid A expands and diffuses on the surfaces of the master batches, the water staying in the hollow areas on the surfaces of the master batches can be contacted with the liquid A, the liquid can dilute the water staying on the surfaces of the master batches, the water releases heat in the contact process with the nano calcium oxide and generates calcium hydroxide, the liquid A staying on the surfaces of the master batches buffers the master batches in heat change, the influence on the master batches is reduced, the liquid A is rubbed by a hairbrush by simple physical filtration, attachments and the like on the surfaces of the master batches are removed, and compared with the conventional wind power blow drying and thermal power drying, the master batches have obvious integral dehydration effect, and cannot generate property change of partial master batches, thereby influencing the quality of finished products in the later processing of the nylon heat insulation strip.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The method for drying the master batches of the nylon heat insulation strips comprises the following steps of:
the method comprises the following steps: putting the master batch of the nylon heat-insulating strip into a closed container with a built-in stirring mechanism and an external negative pressure component to prepare liquid A,
the liquid A comprises the following components in parts by weight:
5-10 parts of deionized water, 3-5 parts of petrolatum, 1-2 parts of antioxidant, 3-5 parts of foaming agent, 20-30 parts of modified vegetable oil and 20-30 parts of ethyl acetate;
stirring the liquid A for 5-10min, pouring into a closed container, stirring the liquid A and the nylon heat insulation strip master batch by using a stirring mechanism, and stirring for 20-40 min;
step two: after stirring is finished, the negative pressure component performs negative pressure air extraction on the closed container, and then gas is introduced to restore the air pressure of the closed container to an initial state;
step three: repeating the negative pressure air extraction and the gas introduction in the second step for a plurality of times, introducing the nano calcium oxide powder and the gas into the closed container together when the last negative pressure air extraction is finished, operating the stirring mechanism, and stopping stirring for 5-10 min;
step four: the method comprises the following steps of moving the nylon heat insulation strip master batch out of a closed container, sieving to remove attachments on the surface of the nylon heat insulation strip master batch, placing the nylon heat insulation strip master batch between an upper horizontal plate body and a lower horizontal plate body, fixedly connecting a brush to the upper end face and the lower end face of the upper horizontal plate body, enabling the upper horizontal plate body to horizontally reciprocate when the two horizontal plate bodies are close to each other, and horizontally twisting the master batch by the two horizontal plate bodies.
2. The nylon heat insulation strip master batch drying method according to claim 1, characterized in that: the volume of the liquid A after preparation, the volume of the liquid A after stirring and when the liquid A is poured into the closed container and the volume ratio of the liquid A to the liquid A when the closed container is subjected to negative pressure air extraction are respectively 1: 1.05-1.1: 1.4 to 1.6.
3. The nylon heat insulation strip master batch drying method according to claim 1, characterized in that: the mass ratio of the liquid A to the mass of the nylon heat insulation strip master batch put into the closed container is 3-5: 13.
4. The nylon heat insulation strip master batch drying method according to claim 1, characterized in that: the mass ratio of the master batch of the nylon heat insulation strip before drying to the master batch after drying is more than 1.01:1, such as less than 1: 1.01, the sieving and the horizontal rubbing in the fourth step are repeated.
5. The nylon heat insulation strip master batch drying method according to claim 1, characterized in that: the pressure adjusting amplitude of the negative pressure component is not more than 30% of the original pressure of the inner cavity of the closed container.
6. The nylon heat insulation strip master batch drying method according to claim 1, characterized in that: when the two horizontal plates are horizontally twisted, the distance between the two horizontal plates is larger than the particle size of the master batch of the single nylon heat insulation strip and smaller than the particle sizes of the master batches of the two nylon heat insulation strips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110317064.4A CN112940297A (en) | 2021-03-25 | 2021-03-25 | Nylon heat insulation strip master batch drying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110317064.4A CN112940297A (en) | 2021-03-25 | 2021-03-25 | Nylon heat insulation strip master batch drying method |
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| Publication Number | Publication Date |
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| CN112940297A true CN112940297A (en) | 2021-06-11 |
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| CN202110317064.4A Pending CN112940297A (en) | 2021-03-25 | 2021-03-25 | Nylon heat insulation strip master batch drying method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617889A (en) * | 2011-03-07 | 2012-08-01 | 周良文 | Dry plastic material with moistureproof outer layer |
| EP2727950A1 (en) * | 2012-11-02 | 2014-05-07 | Rhein Chemie Rheinau GmbH | Method for drying of plastics on the basis of polyester resins |
| CN107867031A (en) * | 2017-12-06 | 2018-04-03 | 徐州通用高新磁电有限公司 | A kind of plastic material of moisture resistance wet environment |
| CN209869146U (en) * | 2019-04-18 | 2019-12-31 | 深圳市华万彩实业有限公司 | Plastic master batch drying device |
| CN110804304A (en) * | 2019-12-02 | 2020-02-18 | 南京勇聚新材料科技有限公司 | Low-water-absorption nylon master batch and preparation method thereof |
| CN111283896A (en) * | 2020-02-25 | 2020-06-16 | 浙江巨创新材料科技有限公司 | Prilling granulator is used in production of modified nanometer master batch |
| CN111944225A (en) * | 2020-09-03 | 2020-11-17 | 孙乐强 | Polyethylene flame-retardant plastic master batch |
-
2021
- 2021-03-25 CN CN202110317064.4A patent/CN112940297A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617889A (en) * | 2011-03-07 | 2012-08-01 | 周良文 | Dry plastic material with moistureproof outer layer |
| EP2727950A1 (en) * | 2012-11-02 | 2014-05-07 | Rhein Chemie Rheinau GmbH | Method for drying of plastics on the basis of polyester resins |
| CN107867031A (en) * | 2017-12-06 | 2018-04-03 | 徐州通用高新磁电有限公司 | A kind of plastic material of moisture resistance wet environment |
| CN209869146U (en) * | 2019-04-18 | 2019-12-31 | 深圳市华万彩实业有限公司 | Plastic master batch drying device |
| CN110804304A (en) * | 2019-12-02 | 2020-02-18 | 南京勇聚新材料科技有限公司 | Low-water-absorption nylon master batch and preparation method thereof |
| CN111283896A (en) * | 2020-02-25 | 2020-06-16 | 浙江巨创新材料科技有限公司 | Prilling granulator is used in production of modified nanometer master batch |
| CN111944225A (en) * | 2020-09-03 | 2020-11-17 | 孙乐强 | Polyethylene flame-retardant plastic master batch |
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Application publication date: 20210611 |
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