CN113789021A - Reinforced flame-retardant mute peptized drainage pipeline - Google Patents
Reinforced flame-retardant mute peptized drainage pipeline Download PDFInfo
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- CN113789021A CN113789021A CN202111105442.9A CN202111105442A CN113789021A CN 113789021 A CN113789021 A CN 113789021A CN 202111105442 A CN202111105442 A CN 202111105442A CN 113789021 A CN113789021 A CN 113789021A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- 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
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/02—Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/04—Protection of pipes or objects of similar shape against external or internal damage or wear against fire or other external sources of extreme heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/21—Rigid pipes made of sound-absorbing materials or with sound-absorbing structure
-
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
- C08L2201/02—Flame or fire retardant/resistant
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention relates to the technical field of drainage facilities, and discloses an enhanced flame-retardant mute peptized drainage pipeline, which comprises an inner layer, a middle layer and an outer layer, wherein the inner layer, the middle layer and the outer layer are respectively made of inner layer particles, middle layer particles and outer layer particles, and the preparation method comprises the following steps: the three-layer melt is formed by cooling, drawing and cutting after composite forming in a machine head model. The invention has excellent sound insulation and noise reduction effects, can obviously improve the noise of a pipeline, has higher thermal deformation temperature and better flame retardance, is not easy to deform at high temperature, and has the characteristics of high bending strength, high ring stiffness and small longitudinal retraction rate.
Description
Technical Field
The invention relates to the technical field of drainage facilities, in particular to an enhanced flame-retardant mute peptized drainage pipeline.
Background
Compared with the traditional pipe, the plastic pipe has the remarkable advantages of light weight, corrosion resistance, small water flow resistance, energy conservation, simple and rapid installation, low manufacturing cost and the like, is widely used in various drainage facilities, has poor effect of the common plastic sound insulation pipe, has large noise of water flow in the pipe when being used as a drainage pipeline, can seriously damage the indoor quiet environment when being used for indoor drainage, influences the normal life of indoor residents, and has the characteristic of poor high temperature resistance in the same period.
The Chinese patent discloses a flame-retardant high-temperature-resistant reinforced polypropylene mute drain pipe and application thereof (No. CN 108192221B), and the drain pipe obtained by the technology of the patent has low cost, flame retardance, high temperature resistance, chemical corrosion resistance, impact resistance and long service life; the mute effect is good, and green, but it is when working in complicated abominable environment, and it is not good to lead to its mute effect, flame retardant efficiency not good.
Disclosure of Invention
The invention aims to provide a reinforced flame-retardant mute peptized drainage pipeline to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the reinforced flame-retardant mute peptized drainage pipeline comprises an inner layer, a middle layer and an outer layer, wherein the inner layer, the middle layer and the outer layer are respectively made of inner layer particles, middle layer particles and outer layer particles, and the preparation method comprises the following steps: extruding and melting the inner layer particles, the middle layer particles and the outer layer particles into a melt through three screw extruders, enabling the melt of the inner layer particles, the middle layer particles and the outer layer particles to flow into a shunt channel with set width and thickness from a feeding end of a machine head with three channels respectively, and performing composite molding on the three layers of melt in a machine head model, cooling, drawing and cutting to obtain the melt;
the interlayer particles comprise the following components in parts by weight: 60-65 parts of polyvinyl chloride paste resin, 10-15 parts of liquid plasticizer, 3-5 parts of tackifier, 0.5-1 part of defoaming agent, 0.5-1 part of thixotropic agent, 10-15 parts of filler, 1-2 parts of stabilizer and 1-2 parts of viscosity regulator.
As a still further scheme of the invention: the preparation method of the interlayer particles comprises the following steps: adding 60-65 parts of polyvinyl chloride paste resin into 10-15 parts of liquid plasticizer, heating to 160-170 ℃, stirring in the reheating process, sequentially adding 3-5 parts of tackifier, 0.5-1 part of defoaming agent, 0.5-1 part of thixotropic agent, 10-15 parts of filler, 1-2 parts of stabilizer and 1-2 parts of viscosity regulator to completely dissolve the polyvinyl chloride paste resin into the liquid plasticizer, and then cooling and cutting to obtain the interlayer particles.
As a still further scheme of the invention: the liquid plasticizer in the middle layer particles can be dioctyl phthalate, the tackifier can be one or more of polyamide, polyurethane or epoxy ester of internal olefine acid, the defoaming agent can be one or more of organic silicon, polyether or mineral oil, the thixotropic agent can be one or more of polyamide wax, silicon dioxide or organic bentonite, the filler can be calcium carbonate, the stabilizer can be zinc stearate, and the viscosity regulator can be ammoniated colloidal argil.
As a still further scheme of the invention: the inner layer particles comprise the following components in parts by weight: 65-75 parts of co-polypropylene, 20-25 parts of barium sulfate, 1-1.5 parts of aluminate, 0.5-1 part of calcium stearate, 0.5-1 part of white oil and 1.5-2 parts of POE elastomer.
As a still further scheme of the invention: the inner wall of the inner layer particle is of a spiral structure, and the preparation method of the inner layer particle comprises the following steps: mixing and dispersing 65-75 parts of co-polypropylene, 20-25 parts of barium sulfate, 1-1.5 parts of aluminate, 0.5-1 part of calcium stearate, 0.5-1 part of white oil and 1.5-2 parts of POE elastomer uniformly, melting all the components by a screw extruder, cooling and extruding into granules to obtain the inner layer particles.
As a still further scheme of the invention: the outer layer particles comprise the following components in parts by weight: 60-70 parts of polypropylene, 10-12 parts of long glass fiber, 10-12 parts of milled carbon fiber, 1-1.5 parts of PP compatilizer and 1-1.5 parts of antioxidant.
As a still further scheme of the invention: the PP compatilizer in the outer layer particles can be selected from maleic anhydride grafted polypropylene, and the antioxidant can be selected from phosphite ester or pentaerythritol ester.
As a still further scheme of the invention: the preparation method of the outer-layer particles comprises the following steps: mixing and dispersing 60-70 parts of polypropylene, 10-12 parts of long glass fiber, 10-12 parts of milled carbon fiber, 1-1.5 parts of PP compatilizer and 1-1.5 parts of antioxidant together, melting the polypropylene by a screw extruder to wrap the long glass fiber and the milled carbon fiber, cooling and extruding into granules to obtain the outer-layer particles.
Compared with the prior art, the invention has the beneficial effects that:
the sound-insulation noise-reduction material comprises an inner layer, a middle layer and an outer layer, wherein the inner layer, the middle layer and the outer layer are respectively made of inner layer particles, middle layer particles and outer layer particles, the middle layer particles are made of polyvinyl chloride paste resin, a liquid plasticizer, a tackifier, a defoaming agent, a thixotropic agent, a filler, a stabilizer and a viscosity regulator, the inner layer particles are made of polypropylene copolymer, barium sulfate, aluminate, calcium stearate, white oil and a POE elastomer, and the outer layer particles are made of polypropylene, long glass fiber, ground carbon fiber, a PP compatilizer and an antioxidant.
Detailed Description
In the embodiment of the invention, the reinforced flame-retardant mute peptized drainage pipeline comprises an inner layer, a middle layer and an outer layer, wherein the inner layer, the middle layer and the outer layer are respectively made of inner layer particles, middle layer particles and outer layer particles, and the preparation method comprises the following steps: extruding and melting the inner layer particles, the middle layer particles and the outer layer particles into a melt through three screw extruders, enabling the melt of the inner layer particles, the middle layer particles and the outer layer particles to flow into a shunt channel with set width and thickness from a feeding end of a machine head with three channels respectively, and performing composite molding on the three layers of melt in a machine head model, cooling, drawing and cutting to obtain the melt;
the interlayer particles comprise the following components in parts by weight: 60-65 parts of polyvinyl chloride paste resin, 10-15 parts of liquid plasticizer, 3-5 parts of tackifier, 0.5-1 part of defoaming agent, 0.5-1 part of thixotropic agent, 10-15 parts of filler, 1-2 parts of stabilizer and 1-2 parts of viscosity regulator.
Preferably, the preparation method of the interlayer particles comprises the following steps: adding 60-65 parts of polyvinyl chloride paste resin into 10-15 parts of liquid plasticizer, heating to 160-170 ℃, stirring in the reheating process, sequentially adding 3-5 parts of tackifier, 0.5-1 part of defoaming agent, 0.5-1 part of thixotropic agent, 10-15 parts of filler, 1-2 parts of stabilizer and 1-2 parts of viscosity regulator to completely dissolve the polyvinyl chloride paste resin into the liquid plasticizer, and then cooling and cutting to obtain the interlayer particles.
Preferably, the liquid plasticizer in the middle layer particles can be dioctyl phthalate, the tackifier can be one or more of polyamide, polyurethane or epoxy ester of internal olefine acid, the defoaming agent can be one or more of organic silicon, polyether or mineral oil, the thixotropic agent can be one or more of polyamide wax, silicon dioxide or organic bentonite, the filler can be calcium carbonate, the stabilizer can be zinc stearate, and the viscosity regulator can be ammoniated puddle.
Preferably, the inner layer particles comprise the following components in parts by weight: 65-75 parts of co-polypropylene, 20-25 parts of barium sulfate, 1-1.5 parts of aluminate, 0.5-1 part of calcium stearate, 0.5-1 part of white oil and 1.5-2 parts of POE elastomer.
Preferably, the inner wall of the inner layer particle is in a spiral structure, and the preparation method of the inner layer particle is as follows: mixing and dispersing 65-75 parts of co-polypropylene, 20-25 parts of barium sulfate, 1-1.5 parts of aluminate, 0.5-1 part of calcium stearate, 0.5-1 part of white oil and 1.5-2 parts of POE elastomer uniformly, melting all the components by a screw extruder, cooling and extruding into granules to obtain the inner layer particles.
Preferably, the outer layer particles comprise the following components in parts by weight: 60-70 parts of polypropylene, 10-12 parts of long glass fiber, 10-12 parts of milled carbon fiber, 1-1.5 parts of PP compatilizer and 1-1.5 parts of antioxidant.
Preferably, the PP compatilizer in the outer layer particles can be selected from maleic anhydride grafted polypropylene, and the antioxidant can be selected from phosphite ester or pentaerythritol ester.
Preferably, the preparation method of the outer layer particles is as follows: mixing and dispersing 60-70 parts of polypropylene, 10-12 parts of long glass fiber, 10-12 parts of ground carbon fiber, 1-1.5 parts of PP compatilizer and 1-1.5 parts of antioxidant together, melting the polypropylene by a screw extruder, wrapping the long glass fiber and the ground carbon fiber, cooling and extruding into granules to obtain outer-layer particles, increasing the internal friction force by the long glass fiber and the ground carbon fiber, and making the relative movement between molecules difficult, thereby improving the thermal deformation capacity.
To better illustrate the technical effect of the present invention, it is illustrated by the following tests:
the drainage pipeline prepared by the method is selected as an embodiment;
a drainage pipeline prepared from a high-temperature mute drainage pipeline (publication number: CNCN102219955B, day: 2013-02-13) disclosed by a Chinese patent is selected as a first comparative example;
selecting a flame-retardant high-temperature-resistant reinforced polypropylene mute drain pipe disclosed by Chinese patent and a drain pipe prepared by applying the flame-retardant high-temperature-resistant reinforced polypropylene mute drain pipe (publication number: CN108192221B, day: 2020-08-07) as a second comparative example;
the same specification was selected for the drain pipes of examples, comparative examples one and two, wherein the nominal outer diameter was 20mm and the wall thickness was 2.3mm, and the bending strength (unit: MPa), the heat distortion temperature (unit ℃), and the ring stiffness (unit: KN/m) were respectively performed2) Flat test, longitudinal shrinkage (unit: 100%) and noise test (unit: dB (A), the water flow rate tested was 4L/s), and the results are reported in Table 1 below
Table 1: table of performance analysis of examples, comparative examples first and second
The analysis of table 1 can result in:
1. when the drainage pipelines of the examples, the comparative example I and the comparative example II are subjected to a flat test, the breakage does not occur, but the bending strength and the heat distortion temperature of the drainage pipeline in the examples are both obviously higher than those of the drainage pipeline in the comparative example I and the comparative example II, so that the drainage pipeline prepared by the invention has excellent flame retardant property and bending property;
2. the ring stiffness of the drainage pipeline in the embodiment is far higher than that of the drainage pipeline in the comparative example I and the comparative example II, so that the drainage pipeline prepared by the method has stronger bearing capacity and is difficult to deform under the action of external force;
3. the longitudinal retraction rate of the drainage pipeline in the embodiment is smaller than that of the drainage pipeline in the comparative example I and the comparative example II, so that the drainage pipeline prepared by the method has higher stability under the influence of heat;
4. the noise value of the drainage pipeline in the embodiment is smaller than that of the drainage pipeline in the comparative example I and the comparative example II, so that the drainage pipeline prepared by the method has a strong sound insulation effect.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (8)
1. The reinforced flame-retardant mute peptized drainage pipeline comprises an inner layer, a middle layer and an outer layer, wherein the inner layer, the middle layer and the outer layer are respectively made of inner layer particles, middle layer particles and outer layer particles, and the preparation method is characterized by comprising the following steps of: extruding and melting the inner layer particles, the middle layer particles and the outer layer particles into a melt through three screw extruders, enabling the melt of the inner layer particles, the middle layer particles and the outer layer particles to flow into a shunt channel with set width and thickness from a feeding end of a machine head with three channels respectively, and performing composite molding on the three layers of melt in a machine head model, cooling, drawing and cutting to obtain the melt;
the interlayer particles comprise the following components in parts by weight: 60-65 parts of polyvinyl chloride paste resin, 10-15 parts of liquid plasticizer, 3-5 parts of tackifier, 0.5-1 part of defoaming agent, 0.5-1 part of thixotropic agent, 10-15 parts of filler, 1-2 parts of stabilizer and 1-2 parts of viscosity regulator.
2. The enhanced fire retardant mute peptized drainage pipe of claim 1, wherein the preparation method of the interlayer particles comprises the following steps: adding 60-65 parts of polyvinyl chloride paste resin into 10-15 parts of liquid plasticizer, heating to 160-170 ℃, stirring in the reheating process, sequentially adding 3-5 parts of tackifier, 0.5-1 part of defoaming agent, 0.5-1 part of thixotropic agent, 10-15 parts of filler, 1-2 parts of stabilizer and 1-2 parts of viscosity regulator to completely dissolve the polyvinyl chloride paste resin into the liquid plasticizer, and then cooling and cutting to obtain the interlayer particles.
3. The drainage pipe according to claim 1, wherein the liquid plasticizer in the intermediate layer particles is dioctyl phthalate, the tackifier is one or more selected from polyamide, polyurethane or epoxy ester of internal olefine acid, the defoamer is one or more selected from organosilicon, polyether or mineral oil, the thixotropic agent is one or more selected from polyamide wax, silica or organic bentonite, the filler is calcium carbonate, the stabilizer is zinc stearate, and the viscosity regulator is ammoniated colloidal pottery clay.
4. The enhanced flame-retardant mute peptized drainage pipe according to claim 1, wherein the inner layer particles comprise the following components in parts by weight: 65-75 parts of co-polypropylene, 20-25 parts of barium sulfate, 1-1.5 parts of aluminate, 0.5-1 part of calcium stearate, 0.5-1 part of white oil and 1.5-2 parts of POE elastomer.
5. The enhanced flame retardant mute peptized drainage pipe of claim 4, wherein the inner wall of the inner layer particles is in a spiral structure, and the preparation method of the inner layer particles is as follows: mixing and dispersing 65-75 parts of co-polypropylene, 20-25 parts of barium sulfate, 1-1.5 parts of aluminate, 0.5-1 part of calcium stearate, 0.5-1 part of white oil and 1.5-2 parts of POE elastomer uniformly, melting all the components by a screw extruder, cooling and extruding into granules to obtain the inner layer particles.
6. The enhanced flame-retardant mute peptized drainage pipe according to claim 1, wherein the outer layer particles comprise the following components in parts by weight: 60-70 parts of polypropylene, 10-12 parts of long glass fiber, 10-12 parts of milled carbon fiber, 1-1.5 parts of PP compatilizer and 1-1.5 parts of antioxidant.
7. The enhanced fire retardant mute peptized drainage pipe of claim 6, wherein the PP compatilizer in the outer layer particles is selected from maleic anhydride grafted polypropylene, and the antioxidant is selected from phosphite ester or pentaerythritol ester.
8. The enhanced flame retardant mute peptized drainage pipe of claim 6, wherein the preparation method of the outer layer particles is as follows: mixing and dispersing 60-70 parts of polypropylene, 10-12 parts of long glass fiber, 10-12 parts of milled carbon fiber, 1-1.5 parts of PP compatilizer and 1-1.5 parts of antioxidant together, melting the polypropylene by a screw extruder to wrap the long glass fiber and the milled carbon fiber, cooling and extruding into granules to obtain the outer-layer particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111105442.9A CN113789021A (en) | 2021-09-22 | 2021-09-22 | Reinforced flame-retardant mute peptized drainage pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111105442.9A CN113789021A (en) | 2021-09-22 | 2021-09-22 | Reinforced flame-retardant mute peptized drainage pipeline |
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| Publication Number | Publication Date |
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| CN113789021A true CN113789021A (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111105442.9A Withdrawn CN113789021A (en) | 2021-09-22 | 2021-09-22 | Reinforced flame-retardant mute peptized drainage pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114658927A (en) * | 2022-03-31 | 2022-06-24 | 湖北大洋塑胶有限公司 | Polypropylene drainage riser |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1982365A (en) * | 2005-12-12 | 2007-06-20 | 上海理日化工新材料有限公司 | High-thixotropic poly(vinyl chloride) plastic sol |
| CN103883812A (en) * | 2014-03-12 | 2014-06-25 | 青岛恒瑞塑料科技有限责任公司 | Inside spin type high-temperature-resisting ultra-quiet drainage pipe and manufacturing method thereof |
| CN104725717A (en) * | 2014-11-27 | 2015-06-24 | 上海邦中高分子材料有限公司 | Internal-pressure-resistant polypropylene pipe and preparation method thereof |
-
2021
- 2021-09-22 CN CN202111105442.9A patent/CN113789021A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1982365A (en) * | 2005-12-12 | 2007-06-20 | 上海理日化工新材料有限公司 | High-thixotropic poly(vinyl chloride) plastic sol |
| CN103883812A (en) * | 2014-03-12 | 2014-06-25 | 青岛恒瑞塑料科技有限责任公司 | Inside spin type high-temperature-resisting ultra-quiet drainage pipe and manufacturing method thereof |
| CN104725717A (en) * | 2014-11-27 | 2015-06-24 | 上海邦中高分子材料有限公司 | Internal-pressure-resistant polypropylene pipe and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 吴世敏 等: "《简明精细化工大辞典》", 30 June 1999, 辽宁科学技术出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114658927A (en) * | 2022-03-31 | 2022-06-24 | 湖北大洋塑胶有限公司 | Polypropylene drainage riser |
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Application publication date: 20211214 |