CN111675837A - Phosphogypsum composite HDPE corrugated pipe and manufacturing process thereof - Google Patents
Phosphogypsum composite HDPE corrugated pipe and manufacturing process thereof Download PDFInfo
- Publication number
- CN111675837A CN111675837A CN202010448116.7A CN202010448116A CN111675837A CN 111675837 A CN111675837 A CN 111675837A CN 202010448116 A CN202010448116 A CN 202010448116A CN 111675837 A CN111675837 A CN 111675837A
- Authority
- CN
- China
- Prior art keywords
- phosphogypsum
- corrugated pipe
- hdpe
- antioxidant
- hdpe corrugated
- 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.)
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- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 title claims abstract description 69
- 229920001903 high density polyethylene Polymers 0.000 title claims abstract description 38
- 239000004700 high-density polyethylene Substances 0.000 title claims abstract description 38
- 239000002131 composite material Substances 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000004698 Polyethylene Substances 0.000 claims abstract description 23
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 23
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 23
- -1 polyethylene Polymers 0.000 claims abstract description 23
- 229920000573 polyethylene Polymers 0.000 claims abstract description 23
- 229920003023 plastic Polymers 0.000 claims abstract description 22
- 239000004033 plastic Substances 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 239000007822 coupling agent Substances 0.000 claims abstract description 14
- 239000000945 filler Substances 0.000 claims abstract description 14
- 239000000654 additive Substances 0.000 claims abstract description 11
- 230000000996 additive effect Effects 0.000 claims abstract description 11
- 239000012188 paraffin wax Substances 0.000 claims abstract description 11
- 239000001993 wax Substances 0.000 claims abstract description 11
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 8
- 230000004913 activation Effects 0.000 claims abstract description 8
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 8
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000008117 stearic acid Substances 0.000 claims abstract description 8
- 238000001354 calcination Methods 0.000 claims abstract description 7
- 239000004595 color masterbatch Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 10
- 239000011574 phosphorus Substances 0.000 claims description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 5
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 239000011246 composite particle Substances 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 150000004756 silanes Chemical group 0.000 claims description 2
- 150000004645 aluminates Chemical class 0.000 claims 1
- 238000003912 environmental pollution Methods 0.000 abstract description 5
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 20
- 229910000019 calcium carbonate Inorganic materials 0.000 description 10
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 10
- 239000002245 particle Substances 0.000 description 4
- 239000002910 solid waste Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical group [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- 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
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
-
- 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
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a phosphogypsum composite HDPE corrugated pipe which comprises the following components in parts by weight: 10-50% of phosphogypsum filler, 50-90% of HDPE polyethylene plastic raw material, 1-5% of polyethylene wax, 0.5-1.5% of coupling agent, 0.5-1.5% of stearic acid, 0.5-5% of paraffin, 0.2-1% of antioxidant, 0.1-1% of ultraviolet resistant additive and 0.2-2% of color master batch. The manufacturing process of the phosphogypsum composite HDPE corrugated pipe comprises the steps of calcining phosphogypsum powder to 300-600 ℃, adding a coupling agent, putting the calcined phosphogypsum powder into a high-speed mixer for activation treatment, adding HDPE polyethylene plastic raw materials, paraffin, polyethylene wax, an antioxidant, an ultraviolet resistant additive and a color master agent into a product obtained after the activation treatment, mixing the mixture in a low-speed mixer, and then putting the mixture into a conical double-screw extruder for extrusion to obtain the phosphogypsum composite HDPE corrugated pipe. The invention improves the utilization value of the phosphogypsum, changes waste into valuable, reduces the environmental pollution, and ensures that the manufactured HDPE corrugated pipe has good quality and strong oxidation resistance.
Description
Technical Field
The invention relates to the technical field of modified plastics, in particular to a phosphogypsum composite HDPE corrugated pipe and a manufacturing process thereof.
Background
The existing drainage HDPE double-wall corrugated pipe uses HDPE polyethylene plastic raw material added with inorganic substance calcium carbonate or talcum powder to increase ring rigidity. Because calcium carbonate particles are spherical, the rigidity of the ring filled with calcium carbonate powder cannot easily meet the requirement. The talcum powder particles are flaky, the ring rigidity requirement can be met by filling the talcum powder, and the product is easy to embrittle. And the calcium carbonate and the talcum powder which are used as plastic filling modified powder occupy mineral resources, and the mining process also causes environmental pollution.
China is a large country of phosphogypsum resources, and the phosphogypsum becomes the second large industrial solid waste after fly ash in China. Because the production amount of the phosphogypsum is large and relatively centralized, and simultaneously, the phosphogypsum contains certain impurities and is difficult to be innoxiously treated, the global phosphogypsum comprehensive utilization rate is only about 20 percent at present. In 2018, the production of phosphogypsum in China is 7800 million tons, which is increased by 4 percent on a same scale, and hundreds of millions of tons of stacked phosphogypsum need to be digested at the present stage, so that the resource utilization of the phosphogypsum is urgent.
More than 80% of the phosphogypsum production emission of China is concentrated in Hubei, Yunnan, Guizhou, Anhui and Sichuan provinces, and the method has the typical regional characteristics, the spatial distribution of phosphorite causes uneven distribution of phosphogypsum production space, the additional value of downstream products is low, and the utilization difficulty is high. Secondly, annual discharge and annual stockpiling of phosphogypsum have restricted the sustainable development of the phosphorus chemical industry. At present, most of phosphorus fertilizer production enterprises in China can only heap up the solid waste phosphogypsum, so that not only is a large amount of land occupied, but also a large amount of capital is invested to carry out anti-seepage treatment on the piled-up phosphorus gypsum, and economic burden is brought to the development of the enterprises.
The phosphogypsum contains a large amount of phosphorus, fluorine, various salts and heavy metals, and the ecological environment such as atmosphere, soil, underground water and the like in a piled land and a nearby area is seriously harmed by improper treatment. Therefore, the promotion of resource utilization of the phosphogypsum has important significance in terms of society, environment and economy.
Disclosure of Invention
The invention aims to solve the technical problem of providing a phosphogypsum composite HDPE corrugated pipe and a manufacturing process thereof, wherein the phosphogypsum composite HDPE corrugated pipe has the advantages of improving the utilization value of phosphogypsum, reducing environmental pollution, and having good quality and strong oxidation resistance.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the ardealite composite HDPE corrugated pipe comprises the following components in parts by weight:
10-50% of phosphogypsum filler, 50-90% of HDPE polyethylene plastic raw material, 1-5% of polyethylene wax, 0.5-1.5% of coupling agent, 0.5-5% of paraffin, 0.2-1% of antioxidant, 0.1-1% of anti-ultraviolet additive and 0.2-2% of color master batch.
Further, the paint comprises the following components in parts by weight:
15-40% of phosphogypsum filler, 60-80% of HDPE polyethylene plastic raw material, 2-4% of polyethylene wax, 0.7-1.2% of phosphorus coupling agent, 0.5-1.5% of stearic acid, 1.5-4.5% of paraffin, 0.4-1% of antioxidant, 0.2-1% of ultraviolet resistant additive and 0.5-1.6% of color master batch.
Further, the phosphogypsum filler is phosphogypsum powder or phosphogypsum composite particles.
Furthermore, the mesh number of the phosphogypsum powder is 200-2000 meshes.
Further, the coupling agent is silanes or titanates.
Further, the antioxidant is one of a phosphorus antioxidant, a phenol antioxidant and a sulfur antioxidant.
The manufacturing process of the ardealite composite HDPE corrugated pipe comprises the following steps:
firstly, calcining phosphogypsum powder to 300-600 ℃, adding a coupling agent, putting into a high-speed mixer for mixing, and heating to 85-110 ℃ for activation treatment;
and step two, adding the product obtained after the activation treatment in the step one into the HDPE polyethylene plastic raw material, paraffin, polyethylene wax, stearic acid, antioxidant, ultraviolet-resistant additive and color master agent, mixing in a low-speed mixer, then putting into a conical double-screw extruder, and extruding to obtain the phosphogypsum composite HDPE corrugated pipe.
Further, in the first step, the temperature for calcining the phosphogypsum raw material is 400 ℃.
Furthermore, in the first step, the mesh number of the phosphogypsum powder ground by the grinding machine is 200-2000 meshes.
Compared with the prior art, the invention has the beneficial effects that:
the ardealite filled plastic modified particles are applied to plastic filling, replace the original fillers such as calcium carbonate, talcum powder and the like, and can meet the properties of the original fillers such as calcium carbonate, talcum powder and the like in physical use performance.
The invention changes the phosphogypsum into valuable and replaces calcium carbonate and talcum powder in plastic products to be applied to plastic processing, thereby reducing the environmental pollution and greatly improving the utilization value of the phosphogypsum.
The corrugated pipe manufactured by the method has good quality and strong oxidation resistance.
Detailed Description
The following further describes the embodiments of the present invention. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example one
The ardealite composite HDPE corrugated pipe comprises the following components in parts by weight:
10-50% of phosphogypsum filler, 50-90% of HDPE polyethylene plastic raw material, 1-5% of polyethylene wax, 0.5-1.5% of coupling agent, 0.5-1.5% of stearic acid, 0.5-5% of paraffin, 0.2-1% of antioxidant, 0.1-1% of ultraviolet resistant additive and 0.2-2% of color master batch.
The further mixture ratio is as follows:
15-40% of phosphogypsum filler, 60-80% of HDPE polyethylene plastic raw material, 2-4% of polyethylene wax, 0.7-1.2% of phosphorus coupling agent, 1.5-4.5% of paraffin, 0.5-1.5% of stearic acid, 0.4-1% of antioxidant, 0.2-1% of ultraviolet resistant additive and 0.5-1.6% of color master batch.
The phosphogypsum filler is phosphogypsum powder or phosphogypsum composite particles.
The mesh number of the phosphogypsum powder is 200-2000 meshes.
The coupling agent is silane or titanate.
The antioxidant is one of phosphorus antioxidant, phenol antioxidant and sulfur antioxidant.
Example two
The manufacturing process of the ardealite composite HDPE corrugated pipe comprises the following steps:
firstly, calcining phosphogypsum powder to 300-600 ℃, adding a coupling agent, putting into a high-speed mixer for mixing, and heating to 85-110 ℃ for activation treatment;
and step two, adding the product obtained after the activation treatment in the step one into the HDPE polyethylene plastic raw material, paraffin, polyethylene wax, stearic acid, antioxidant, ultraviolet-resistant additive and color master agent, mixing in a low-speed mixer, then putting into a conical double-screw extruder, and extruding to obtain the phosphogypsum composite HDPE corrugated pipe.
In the first step, the temperature for calcining the phosphogypsum raw material is 400 ℃.
In the first step, the mesh number of the phosphogypsum powder ground by the grinding machine is 200-2000 meshes.
The ardealite filled plastic modified particles are applied to plastic filling, replace the original fillers such as calcium carbonate, talcum powder and the like, and can meet the properties of the original fillers such as calcium carbonate, talcum powder and the like in physical use performance.
The invention changes the phosphogypsum into valuable and replaces calcium carbonate and talcum powder in plastic products to be applied to plastic processing, thereby reducing the environmental pollution and greatly improving the utilization value of the phosphogypsum.
The corrugated pipe manufactured by the method has good quality and strong oxidation resistance.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (9)
1. The ardealite composite HDPE corrugated pipe is characterized by comprising the following components in parts by weight:
10-50% of phosphogypsum filler, 50-90% of HDPE polyethylene plastic raw material, 1-5% of polyethylene wax, 0.5-1.5% of coupling agent, 0.5-1.5% of stearic acid, 0.5-5% of paraffin, 0.2-1% of antioxidant, 0.1-1% of ultraviolet resistant additive and 0.2-2% of color master batch.
2. The phosphogypsum composite HDPE corrugated pipe according to claim 1, characterized in that: comprises the following components by weight:
15-40% of phosphogypsum filler, 60-80% of HDPE polyethylene plastic raw material, 2-4% of polyethylene wax, 0.7-1.2% of phosphorus coupling agent, 1.5-4.5% of paraffin, 0.4-1% of antioxidant, 0.2-1% of anti-ultraviolet additive and 0.5-1.6% of color master batch.
3. The phosphogypsum composite HDPE corrugated pipe according to claim 1 or 2, characterized in that: the phosphogypsum filler is phosphogypsum powder or phosphogypsum composite particles.
4. The phosphogypsum composite HDPE corrugated pipe according to claim 3, characterized in that: the mesh number of the phosphogypsum powder is 200-2000 meshes.
5. The phosphogypsum composite HDPE corrugated pipe according to claim 1, characterized in that: the coupling agent is silanes, titanate or aluminate.
6. The phosphogypsum composite HDPE corrugated pipe according to claim 1, characterized in that: the antioxidant is one of a phosphorus antioxidant, a phenol antioxidant and a sulfur antioxidant.
7. A process for manufacturing phosphogypsum composite HDPE corrugated pipes according to claim 1, characterized by comprising the following steps:
firstly, calcining phosphogypsum powder to 300-600 ℃, adding a coupling agent, putting into a high-speed mixer for mixing, and heating to 85-110 ℃ for activation treatment;
and step two, adding the product obtained after the activation treatment in the step one into the HDPE polyethylene plastic raw material, paraffin, polyethylene wax, stearic acid, antioxidant, ultraviolet-resistant additive and color master agent, mixing in a low-speed mixer, then putting into a conical double-screw extruder, and extruding to obtain the phosphogypsum composite HDPE corrugated pipe.
8. The manufacturing process of the phosphogypsum composite HDPE corrugated pipe according to claim 7, is characterized in that: in the first step, the calcining temperature of the phosphogypsum raw material is 400 ℃.
9. The manufacturing process of the phosphogypsum composite HDPE corrugated pipe according to claim 7, is characterized in that: in the first step, the mesh number of the phosphogypsum powder ground by the grinding machine is 200-2000 meshes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010448116.7A CN111675837A (en) | 2020-05-25 | 2020-05-25 | Phosphogypsum composite HDPE corrugated pipe and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010448116.7A CN111675837A (en) | 2020-05-25 | 2020-05-25 | Phosphogypsum composite HDPE corrugated pipe and manufacturing process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111675837A true CN111675837A (en) | 2020-09-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010448116.7A Pending CN111675837A (en) | 2020-05-25 | 2020-05-25 | Phosphogypsum composite HDPE corrugated pipe and manufacturing process thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN111675837A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106117746A (en) * | 2016-07-27 | 2016-11-16 | 联塑科技发展(贵阳)有限公司 | A kind of high density polyethylene (HDPE) plasticizing mother particle and preparation method thereof and its application in hdpe pipe |
| CN111100358A (en) * | 2019-12-12 | 2020-05-05 | 贵州杏萃堂中医健康管理服务有限公司 | HDPE double-layer steel strip hot-melt sewage pipe material containing phosphogypsum and preparation method thereof |
-
2020
- 2020-05-25 CN CN202010448116.7A patent/CN111675837A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106117746A (en) * | 2016-07-27 | 2016-11-16 | 联塑科技发展(贵阳)有限公司 | A kind of high density polyethylene (HDPE) plasticizing mother particle and preparation method thereof and its application in hdpe pipe |
| CN111100358A (en) * | 2019-12-12 | 2020-05-05 | 贵州杏萃堂中医健康管理服务有限公司 | HDPE double-layer steel strip hot-melt sewage pipe material containing phosphogypsum and preparation method thereof |
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Application publication date: 20200918 |