CN111154179A - Polypropylene-based hydrophilic cooling tower filler and preparation method thereof - Google Patents
Polypropylene-based hydrophilic cooling tower filler and preparation method thereof Download PDFInfo
- Publication number
- CN111154179A CN111154179A CN201910974046.6A CN201910974046A CN111154179A CN 111154179 A CN111154179 A CN 111154179A CN 201910974046 A CN201910974046 A CN 201910974046A CN 111154179 A CN111154179 A CN 111154179A
- Authority
- CN
- China
- Prior art keywords
- polypropylene
- parts
- cooling tower
- filler
- hydrophilic
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention relates to the technical field of cooling tower fillers, and discloses a polypropylene-based hydrophilic cooling tower filler and a preparation method thereof. The invention comprises the following components in parts by weight: 100 parts of polypropylene mixture, 10 parts of ethylene-propylene copolymer, 10 parts of polypropylene grafted maleic anhydride, 0.05-2 parts of initiator, 5-10 parts of hydrophilic modifier, 0.1-2 parts of antioxidant, 5-15 parts of carbon material and 10-30 parts of filler. The invention has high cooling and heat dissipation efficiency, good high temperature resistance and low water contact angle.
Description
Technical Field
The invention relates to the technical field of cooling tower filling materials, in particular to a polypropylene-based hydrophilic cooling tower filling material and a preparation method thereof.
Background
The filler is the most important part in the cooling tower, the heat dissipation capacity needs to be increased, the retention time of cooling water is prolonged, the heat exchange area is increased, and the heat exchange capacity is increased.
Due to the characteristics of PVC, the PVC has poor performances in the aspects of heat aging resistance, high temperature resistance and the like, and the contact angle with water is more than 95 degrees; when the PVC-based cooling tower filler is used as a cooling tower filler material, the highest water temperature capable of reducing temperature and dissipating heat is not easy to exceed 65 ℃, which seriously limits the application environment of the PVC-based cooling tower filler.
The polypropylene is second only to polyethylene, has excellent mechanical property, good heat resistance, excellent insulating property and low cost, and is a powerful competitor of the raw material of the cooling tower filler. However, the polypropylene molecular chain does not have polar groups, the hydrophilicity is poor, and the heat conduction number (0.25) of pure polypropylene is low, so that the polypropylene must be subjected to hydrophilic and enhanced related modification before use, but the existing modified polypropylene filler has poor heat dissipation and cooling efficiency, and particularly has low heat dissipation efficiency at high heat dissipation water temperature, and great use limitation.
Disclosure of Invention
The invention provides a polypropylene-based hydrophilic cooling tower filler with high cooling and heat dissipation efficiency, good high temperature resistance and low water contact angle and a preparation method thereof.
The technical problem to be solved is that: the high-temperature resistance of the existing filler is poor, the heat dissipation efficiency at a high water temperature is low, the material strength is poor, and the service life is short.
In order to solve the technical problems, the invention adopts the following technical scheme:
the polypropylene-based hydrophilic cooling tower filler comprises the following components in parts by weight: 100 parts of polypropylene mixture, 10 parts of ethylene-propylene copolymer, 10 parts of polypropylene grafted maleic anhydride, 0.05-2 parts of initiator, 5-10 parts of hydrophilic modifier, 0.1-2 parts of antioxidant, 5-15 parts of carbon material and 10-30 parts of filler.
The polypropylene-based hydrophilic cooling tower filler is characterized in that the polypropylene mixture is a mixture of homo-polypropylene and co-polypropylene, and the mass ratio of the homo-polypropylene to the co-polypropylene is 1: 1.
the polypropylene-based hydrophilic cooling tower filler is characterized in that the initiator is dicumyl peroxide or dibenzoyl peroxide.
The polypropylene-based hydrophilic cooling tower filler is characterized in that the hydrophilic modifier is methyl allyl polyoxyethylene ether or allyl polyoxyethylene ether.
The polypropylene-based hydrophilic cooling tower filler is characterized in that the surface of the carbon material is treated by a silane coupling agent, and the carbon material is one or more of carbon fiber, a multi-walled carbon nanotube or a single-walled carbon nanotube.
The polypropylene-based hydrophilic cooling tower filler is polypropylene-based calcium carbonate master batch or polypropylene-based talcum powder master batch.
The preparation method of the polypropylene-based hydrophilic cooling tower filler comprises the following steps:
step one, preparing materials: preparing materials according to the following parts by weight:
100 parts of polypropylene mixture, 10 parts of ethylene-propylene copolymer, 10 parts of polypropylene grafted maleic anhydride, 0.05-2 parts of initiator, 5-10 parts of hydrophilic modifier, 0.1-2 parts of antioxidant, 5-15 parts of carbon material and 10-30 parts of filler;
adding a hydrophilic modifier and an initiator into absolute ethyl alcohol to prepare a solution or turbid liquid with the concentration not less than 0.1 g/ml;
adding the polypropylene mixture, the ethylene-propylene copolymer, the polypropylene grafted maleic anhydride, the antioxidant, the carbon material and the filler into an open rubber mixing mill for open mixing;
step four, after the mixed material in the step three is completely plasticized, spraying the solution or turbid liquid prepared in the step two to the surface of the plasticized mixed material for grafting reaction, continuously carrying out open milling, and packaging in a triangular bag until the solution or turbid liquid is completely sprayed;
step five, continuously milling until the grafting reaction is complete, and blanking to obtain a filler material;
and step six, extruding the filler material in the step five into sheets, and then performing compression molding to obtain the finished product of the cooling tower filler.
The preparation method of the polypropylene-based hydrophilic cooling tower filler further comprises the step two of spraying the solution or the turbid solution at the speed of 5-10ml/min for no more than 10 min.
The preparation method of the polypropylene-based hydrophilic cooling tower filler further comprises the step four, wherein the reaction temperature of the grafting reaction is 175-210 ℃.
The preparation method of the polypropylene-based hydrophilic cooling tower filler further comprises the step three to the step five, wherein the open milling time is accumulated for 30-50 min.
Compared with the prior art, the polypropylene-based hydrophilic cooling tower filler and the preparation method thereof have the following beneficial effects:
the invention adopts the open mill to carry out the melt graft polymerization reaction, has simple operation and low requirements on the grafting reaction conditions, grafts the hydrophilic agent onto the PP molecular chain, only uses a little volatile ethanol, does not use other large amount of chemical solvents for synthesis, is green and environment-friendly, can not migrate after the modified hydrophilic agent is grafted with the PP molecules, can effectively improve the hydrophilicity of the polypropylene, prolongs the service life and the effect of the hydrophilicity, and ensures that the polypropylene keeps the long-term hydrophilicity.
When the preparation method is used for open milling, the plasticized materials are uniformly heated and mixed under the actions of high temperature, high shear and triangular bag beating; the hydrophilic modifier is sprayed while open milling, so that the hydrophilic modifier is better contacted with the polypropylene, the mixing is more uniform, and the grafting reaction is more complete.
The invention uses HPEG or HPEG as a hydrophilic modifier, the hydrophilic modifier has carbon-carbon double bond, which is easy to initiate self-polymerization, so that the graft chain is lengthened, hydrophilic groups are added, the hydrophilicity of polypropylene is improved, and the heat dissipation efficiency of the cooling tower filler is improved. The method adopts HPEG or TPEG containing carbon-carbon double bonds, and under the action of an initiator, the double bonds are opened to enable the HPEG or TPEG to be connected to a polypropylene macromolecular chain, so that hydrophilic modification of polypropylene is realized.
On one hand, the addition of the carbon material improves the rigidity of polypropylene after the carbon material is blended with the polypropylene by utilizing the rigidity of the carbon material; on the other hand, the carbon material has high thermal conductivity, and after being blended with polypropylene, a thermal conductive network is formed when the content of the carbon material reaches a certain value, so that the thermal conductivity of the polypropylene can be greatly improved. Therefore, the introduction of the polypropylene hydrophilic modification and the carbon material can greatly improve the cooling and heat dissipation efficiency of the cooling tower filler, simultaneously improve the highest heat dissipation water temperature to 85 ℃, and greatly expand the use environment.
Detailed Description
The polypropylene-based hydrophilic cooling tower filler is prepared by the following method, and specifically comprises the following steps:
step one, preparing materials: preparing materials according to the parts by weight shown in Table 1:
preferably, the polypropylene (PP) mixture is a mixture of homo-polypropylene and co-polypropylene, and the mass ratio of the homo-polypropylene to the co-polypropylene is 1: 1; in the embodiment, two types of T1701 and Z30S are specifically selected for proportional mixing;
the initiator is dicumyl peroxide (DCP) or dibenzoyl peroxide (BPO);
the hydrophilic modifier is methyl allyl polyoxyethylene ether (TPEG) or allyl polyoxyethylene ether (HPEG) with the molecular weight of 1500-2500;
the antioxidant is a mixture of a main antioxidant 1010 and an auxiliary antioxidant 168, and the mass ratio of the main antioxidant to the auxiliary antioxidant is 3: 1;
the carbon material is subjected to surface treatment by a silane coupling agent, and the carbon material is one or more of carbon fiber, a multi-wall carbon nanotube or a single-wall carbon nanotube;
the filler is polypropylene-based calcium carbonate master batch or polypropylene-based talcum powder master batch, wherein the mass ratio of calcium carbonate or talcum powder is 50-60%;
adding a hydrophilic modifier and an initiator into absolute ethyl alcohol to prepare a solution with the concentration of not less than 0.1g/ml or a supersaturated turbid solution, wherein spraying is not influenced;
adding a polypropylene mixture (PP), an ethylene propylene copolymer (EAA), polypropylene grafted maleic anhydride (PP-g-MAH), an antioxidant, a carbon material and a filler into an open rubber mixing mill for open mixing; the temperature of the open mill is set to be 180-200 ℃;
step four, after the mixed material in the step three is completely plasticized, spraying the solution or turbid liquid prepared in the step two to the surface of the plasticized mixed material through a spray can or a spray head at the speed of 5-10ml/min for grafting reaction, controlling the reaction temperature of the grafting reaction at 175-210 ℃, simultaneously continuing to carry out open milling, and performing triangular bag opening until the solution or turbid liquid is completely sprayed, wherein the time for finishing the spraying of the solution or turbid liquid is controlled within 10 min;
wherein, the grafting reaction equation of the HPEG and the polypropylene is as follows:
the grafting reaction equation of TPEG and polypropylene is as follows:
step five, continuing to open for 5-12min until the grafting reaction is complete, and blanking to obtain a filler material; wherein, the preferable time is controlled within 10-12min, and the grafting reaction is finished in a higher degree; the total time from plasticizing of the mixed material in the step four to finishing of the open mixing in the step five is controlled to be 30-50 min;
and step six, extruding the filler material in the step five into sheets, and then performing compression molding to obtain the finished product of the cooling tower filler.
TABLE 1 parts by weight of the components in the preparation examples
The filler prepared by the preparation method is placed in an environment with 80 ℃ and 85% RH for 48h, performance evaluation indexes such as water contact angle, thermal conductivity and tensile strength of the filler are measured according to the method specified in GBT30693-2014, and specific test results are shown in Table 2.
TABLE 2 evaluation results of properties of the products obtained in the respective production examples
| Preparation example 1 | Preparation example 2 | Preparation example 3 | Preparation example 4 | Preparation example 5 | |
| Water contact Angle (°) | 61 | 64 | 61 | 54 | 52 |
| Thermal conductivity (W/(m. K) | 0.57 | 0.55 | 0.41 | 0.36 | 0.35 |
| Tensile Strength (MPa) | 47 | 48 | 57 | 52 | 38 |
As shown in Table 2, the filler prepared by the method has a low water contact angle which is generally not more than 60 degrees, the thermal conductivity can reach 0.35-0.57W/(m.K), the tensile strength is as high as 57MPa, the cooling and heat dissipation efficiency is greatly improved, and the service life is effectively prolonged.
Comparative examples
The preparation example 3 was used as a control, and a control 1 was set, except that the modified hydrophilic agent and the carbon material were added, and the other components were used in the same manner as in the preparation example 3, and were prepared in the same manner. The finished filler product obtained in control 1 was also subjected to the performance evaluation test in the manner described above, and the test results are shown in table 3.
Similarly, the preparation example 3 is used as a control group, a control group 2 is provided, and the exactly same raw material components and proportions are used, the difference of the control group 2 is only that the modified hydrophilic agent and the initiator are directly blended and milled with the rest raw materials, and the finished filler prepared by the control group 2 is also subjected to the performance evaluation test according to the method, and the test results are shown in table 3.
Table 3 results of performance test of the products obtained in comparative examples
As can be seen from table 3, the filler product prepared by the control group 1 without adding the modified hydrophilic agent and the carbon material according to the same method as the preparation example has a much higher water contact angle and a significantly lower thermal conductivity than the filler product prepared by the preparation example; the hydrophilicity of the product added with the modified hydrophilic agent and the carbon material is greatly improved; the addition of the carbon material can effectively supplement the reduction of the mechanical property of the product caused by the addition of the modified hydrophilic agent, reinforce the mechanical property of the product, ensure that the product has the strength similar to that of the original polypropylene material, and simultaneously improve the heat-conducting property of the product to a certain extent.
Compared with the filler product prepared in the preparation example 3, the filler product prepared in the control group 2 by blending the modified hydrophilic agent and the initiator with other raw materials has a water contact angle higher by 24 degrees, and the thermal conductivity and the tensile strength are slightly lower than those of the filler product prepared in the preparation example, which shows that the modified hydrophilic agent and the initiator are sprayed on the surface of the blended material to carry out grafting reaction, the reaction rate is obviously improved, and the hydrophilicity, the thermal conductivity and the material strength are improved in the aspect of direct reaction on the product performance.
The modified hydrophilic agent selects HPEG or TPEG with carbon-carbon double bonds, the two materials are easy to initiate self-polymerization, a grafted chain is lengthened, hydrophilic groups are added, the double bonds are opened under the action of an initiator and are connected to a polypropylene macromolecular chain, so that the hydrophilic modification of polypropylene is realized, the hydrophilicity of polypropylene is improved, the water contact angle of the filler is reduced, and the heat dissipation efficiency of the cooling tower filler is improved. However, the excessive content of the HPEG and the TPEG cannot form chemical bonds with PP molecular chains, only physical mixing is formed between the excessive HPEG and TPEG parts and PP, the excessive parts can be separated from PP after long-term water treatment, the water contact angle can be increased, and the hydrophilicity of the filler can be directly influenced. But at this time, the water contact angle of the filler as a whole is still lower than 70 degrees, and is still higher than that of the general PP material due to a relatively low level.
The addition form of the modified hydrophilic agent and the initiator not only can uniformly mix the modified hydrophilic agent and the initiator in advance, but also can uniformly spray the modified hydrophilic agent and the initiator on the surface of a plasticized mixed material, so that the mixing uniformity of the hydrophilic agent and polypropylene can be greatly improved, and the grafting reaction can be better promoted.
According to the invention, the silane modified carbon material is added, on one hand, the rigidity of the polypropylene can be effectively improved after the carbon material is blended with the polypropylene by utilizing the self rigidity of the carbon material, and in the process, because the carbon material and the polypropylene have poor blending property and poor dispersibility, the hydroxyl on the surface of the carbon material and the silane coupling agent undergo dehydration condensation reaction after the carbon material is silane modified, so that the coupling agent is grafted on the surface of the carbon material; meanwhile, because the coupling agent has an amphiphilic structure, after the coupling agent is grafted on the surface of the carbon material, the oleophylic end in a molecular chain is exposed, and the compatibility of the coupling agent and polypropylene is better, so that the compatibility of the carbon material and polypropylene can be effectively improved.
The carbon material has excellent conductivity, and when the carbon material is blended with polypropylene, a percolation network is formed in PP after the content of the carbon material reaches a percolation value, so that a conductive path is formed, and the conductivity of the polypropylene is improved.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (10)
1. The polypropylene-based hydrophilic cooling tower filler is characterized in that: the paint comprises the following components in parts by weight: 100 parts of polypropylene mixture, 10 parts of ethylene-propylene copolymer, 10 parts of polypropylene grafted maleic anhydride, 0.05-2 parts of initiator, 5-10 parts of hydrophilic modifier, 0.1-2 parts of antioxidant, 5-15 parts of carbon material and 10-30 parts of filler.
2. The polypropylene-based hydrophilic cooling tower packing material of claim 1, wherein: the polypropylene mixture is a mixture of homopolymerized polypropylene and copolymerized polypropylene, and the mass ratio of the homopolymerized polypropylene to the copolymerized polypropylene is 1: 1.
3. the polypropylene-based hydrophilic cooling tower packing material of claim 1, wherein: the initiator is dicumyl peroxide or dibenzoyl peroxide.
4. The polypropylene-based hydrophilic cooling tower packing material of claim 1, wherein: the hydrophilic modifier is methyl allyl polyoxyethylene ether or allyl polyoxyethylene ether.
5. The polypropylene-based hydrophilic cooling tower packing material of claim 1, wherein: the carbon material is subjected to surface treatment by a silane coupling agent, and the carbon material is one or more of carbon fiber, a multi-wall carbon nanotube or a single-wall carbon nanotube.
6. The polypropylene-based hydrophilic cooling tower packing material of claim 1, wherein: the filler is polypropylene-based calcium carbonate master batch or polypropylene-based talcum powder master batch.
7. The process for preparing a polypropylene-based hydrophilic cooling tower packing material according to any one of claims 1 to 6, wherein: the method comprises the following steps:
step one, preparing materials: preparing materials according to the following parts by weight:
100 parts of polypropylene mixture, 10 parts of ethylene-propylene copolymer, 10 parts of polypropylene grafted maleic anhydride, 0.05-2 parts of initiator, 5-10 parts of hydrophilic modifier, 0.1-2 parts of antioxidant, 5-15 parts of carbon material and 10-30 parts of filler;
adding a hydrophilic modifier and an initiator into absolute ethyl alcohol to prepare a solution or turbid liquid with the concentration not less than 0.1 g/ml;
adding the polypropylene mixture, the ethylene-propylene copolymer, the polypropylene grafted maleic anhydride, the antioxidant, the carbon material and the filler into an open rubber mixing mill for open mixing;
step four, after the mixed material in the step three is completely plasticized, spraying the solution or turbid liquid prepared in the step two to the surface of the plasticized mixed material for grafting reaction, continuously carrying out open milling, and packaging in a triangular bag until the solution or turbid liquid is completely sprayed;
step five, continuously milling until the grafting reaction is complete, and blanking to obtain a filler material;
and step six, extruding the filler material in the step five into sheets, and then performing compression molding to obtain the finished product of the cooling tower filler.
8. The method for preparing a polypropylene-based hydrophilic cooling tower filler according to claim 7, wherein: and spraying the solution or the turbid solution in the step two at the speed of 5-10ml/min for no more than 10 min.
9. The method for preparing a polypropylene-based hydrophilic cooling tower filler according to claim 7, wherein: the reaction temperature of the grafting reaction in the fourth step is 175-210 ℃.
10. The method for preparing a polypropylene-based hydrophilic cooling tower filler according to claim 7, wherein: the cumulative open time of the third step to the fifth step is 30-50 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910974046.6A CN111154179A (en) | 2019-10-14 | 2019-10-14 | Polypropylene-based hydrophilic cooling tower filler and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910974046.6A CN111154179A (en) | 2019-10-14 | 2019-10-14 | Polypropylene-based hydrophilic cooling tower filler and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111154179A true CN111154179A (en) | 2020-05-15 |
Family
ID=70555765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910974046.6A Withdrawn CN111154179A (en) | 2019-10-14 | 2019-10-14 | Polypropylene-based hydrophilic cooling tower filler and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111154179A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113201181A (en) * | 2021-05-19 | 2021-08-03 | 哈尔滨理工大学 | Preparation method of field enhanced nonlinear conductive polyethylene composite insulating material |
| CN113897018A (en) * | 2021-08-27 | 2022-01-07 | 湖北晟徕复合材料有限公司 | Hydrophilic and antibacterial modified polypropylene material and preparation method thereof |
| WO2023001201A1 (en) * | 2021-07-22 | 2023-01-26 | 广东金发科技有限公司 | Polypropylene composite material having high surface hydrophilicity, and preparation method therefor and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101157777A (en) * | 2007-11-21 | 2008-04-09 | 上海应用技术学院 | Modified polypropylene resin having good hydrophilicity and preparation method thereof |
| US20110186281A1 (en) * | 2007-12-21 | 2011-08-04 | Joseph Peter Guggenbichler | Cooling tower having reduced microbial contamination |
| DE102014218109A1 (en) * | 2013-12-17 | 2015-06-18 | Hyundai Motor Company | CARBON FIBER-REINFORCED POLYPROPYLENE RESIN COMPOSITION WITH EXCELLENT FORMING PROPERTIES |
| CN107118441A (en) * | 2017-06-18 | 2017-09-01 | 苏州诗络迅电力物资有限公司 | A kind of hydrophilic polypropylene compound |
| CN108047587A (en) * | 2017-10-23 | 2018-05-18 | 江苏丰泰节能环保科技有限公司 | Filler used for cooling tower |
| GB201916552D0 (en) * | 2019-11-14 | 2020-01-01 | Horizon Int Ltd | A modified polypropylene-based cooling tower filler and its production process |
-
2019
- 2019-10-14 CN CN201910974046.6A patent/CN111154179A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101157777A (en) * | 2007-11-21 | 2008-04-09 | 上海应用技术学院 | Modified polypropylene resin having good hydrophilicity and preparation method thereof |
| US20110186281A1 (en) * | 2007-12-21 | 2011-08-04 | Joseph Peter Guggenbichler | Cooling tower having reduced microbial contamination |
| DE102014218109A1 (en) * | 2013-12-17 | 2015-06-18 | Hyundai Motor Company | CARBON FIBER-REINFORCED POLYPROPYLENE RESIN COMPOSITION WITH EXCELLENT FORMING PROPERTIES |
| CN107118441A (en) * | 2017-06-18 | 2017-09-01 | 苏州诗络迅电力物资有限公司 | A kind of hydrophilic polypropylene compound |
| CN108047587A (en) * | 2017-10-23 | 2018-05-18 | 江苏丰泰节能环保科技有限公司 | Filler used for cooling tower |
| GB201916552D0 (en) * | 2019-11-14 | 2020-01-01 | Horizon Int Ltd | A modified polypropylene-based cooling tower filler and its production process |
Non-Patent Citations (2)
| Title |
|---|
| 姚瑜等: "聚丙烯亲水性改性", 《化工进展》 * |
| 曹晓粉等: "聚丙烯亲水改性最新进展", 《塑料工业》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113201181A (en) * | 2021-05-19 | 2021-08-03 | 哈尔滨理工大学 | Preparation method of field enhanced nonlinear conductive polyethylene composite insulating material |
| WO2023001201A1 (en) * | 2021-07-22 | 2023-01-26 | 广东金发科技有限公司 | Polypropylene composite material having high surface hydrophilicity, and preparation method therefor and application thereof |
| CN113897018A (en) * | 2021-08-27 | 2022-01-07 | 湖北晟徕复合材料有限公司 | Hydrophilic and antibacterial modified polypropylene material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111154179A (en) | Polypropylene-based hydrophilic cooling tower filler and preparation method thereof | |
| GB2588922A (en) | A modified polypropylene-based cooling tower filler and its production process | |
| CN110452549B (en) | Thermoplastic elastomer-silicone resin composite material and preparation method thereof | |
| CN106700287B (en) | A kind of foamed thermoplastic elastomers and preparation method thereof | |
| CN107474374B (en) | A kind of lignin/polyolefin thermoplastic elastomer composite material and preparation method | |
| CN101709125B (en) | Polystyrene/polyolefin nano composite material based on interface compatibilization and preparation method thereof | |
| CN109535432A (en) | A kind of hollow glass micropearl surface modifying method and a kind of low-density high durable PP composite material and preparation method thereof | |
| CN111793268A (en) | EVA/POE supercritical foaming composite shoe material and preparation method thereof | |
| CN100500757C (en) | Preparation method of partly cross-linked dystectic strength polypropylene | |
| CN104277182A (en) | Preparation method of crosslinked low density polyethylene (LDPE) | |
| CN111533997A (en) | Low-VOC (volatile organic compound) antistatic polypropylene material as well as preparation method and application thereof | |
| NL2028036B1 (en) | Anti-uv anti-fog polyethylene trellis film and its preparation method | |
| CN107987273A (en) | A kind of polyamide and its preparation method and application | |
| CN112852056B (en) | Polypropylene master batch for foaming and preparation method and application thereof | |
| CN114292466A (en) | Modified polypropylene insulating material for medium and low voltage power cable and preparation method thereof | |
| CN111607187A (en) | Modified ABS material and preparation method thereof | |
| CN115785577A (en) | Rubber composition, preparation method thereof and sealing strip | |
| JPS6324018B2 (en) | ||
| CN112625326A (en) | Preparation method of micro-crosslinked antistatic graphene-based polyethylene composite material | |
| CN105622817B (en) | The method that body in-situ polymerization prepares EVA/ graphene composite materials | |
| CN109627580B (en) | Light-colored permanent antistatic modified polypropylene material and preparation method thereof | |
| CN115418048B (en) | Anti-shrinkage polypropylene furniture board composite material and preparation method thereof | |
| CN110951155A (en) | Special polypropylene material for high-voltage cable and preparation method thereof | |
| KR102641662B1 (en) | Self-healing elastomeric materials composition having low hardness | |
| CN110734589A (en) | Method for preparing emulsion polymerized styrene butadiene rubber from modified graphene |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200515 |