CN112175328A - Glass fiber reinforced hard polyvinyl chloride plastic cable guide pipe and manufacturing method thereof - Google Patents
Glass fiber reinforced hard polyvinyl chloride plastic cable guide pipe and manufacturing method thereof Download PDFInfo
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- CN112175328A CN112175328A CN202011222412.1A CN202011222412A CN112175328A CN 112175328 A CN112175328 A CN 112175328A CN 202011222412 A CN202011222412 A CN 202011222412A CN 112175328 A CN112175328 A CN 112175328A
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- 239000003365 glass fiber Substances 0.000 title claims abstract description 31
- 229920000915 polyvinyl chloride Polymers 0.000 title claims abstract description 25
- 239000004800 polyvinyl chloride Substances 0.000 title claims abstract description 25
- 229920003023 plastic Polymers 0.000 title claims abstract description 22
- 239000004033 plastic Substances 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 16
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 8
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 6
- AGXUVMPSUKZYDT-UHFFFAOYSA-L barium(2+);octadecanoate Chemical compound [Ba+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O AGXUVMPSUKZYDT-UHFFFAOYSA-L 0.000 claims abstract description 6
- 239000007822 coupling agent Substances 0.000 claims abstract description 6
- UQLDLKMNUJERMK-UHFFFAOYSA-L di(octadecanoyloxy)lead Chemical compound [Pb+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O UQLDLKMNUJERMK-UHFFFAOYSA-L 0.000 claims abstract description 6
- OCWMFVJKFWXKNZ-UHFFFAOYSA-L lead(2+);oxygen(2-);sulfate Chemical compound [O-2].[O-2].[O-2].[Pb+2].[Pb+2].[Pb+2].[Pb+2].[O-]S([O-])(=O)=O OCWMFVJKFWXKNZ-UHFFFAOYSA-L 0.000 claims abstract description 6
- UMKARVFXJJITLN-UHFFFAOYSA-N lead;phosphorous acid Chemical compound [Pb].OP(O)O UMKARVFXJJITLN-UHFFFAOYSA-N 0.000 claims abstract description 6
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 6
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000012188 paraffin wax Substances 0.000 claims abstract description 6
- 239000011347 resin Substances 0.000 claims abstract description 6
- 229920005989 resin Polymers 0.000 claims abstract description 6
- 239000008117 stearic acid Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 239000002245 particle Substances 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 11
- 239000007788 liquid Substances 0.000 description 7
- 230000006872 improvement Effects 0.000 description 4
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- 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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/06—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
- C08J5/08—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials glass fibres
-
- 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
- C08J2327/00—Characterised by the use 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; Derivatives of such polymers
- C08J2327/02—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2327/06—Homopolymers or copolymers of vinyl chloride
-
- 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
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
- C08J2491/06—Waxes
-
- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (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)
Abstract
The invention discloses a glass fiber reinforced hard polyvinyl chloride plastic cable conduit and a manufacturing method thereof, wherein the glass fiber reinforced hard polyvinyl chloride plastic cable conduit comprises the following steps: 100 parts of SG-5 type PVC resin, 5-30 parts of glass fiber, 5-10 parts of nano calcium carbonate powder, 1-1.0 part of coupling agent KH-5500.1, 2-5 parts of tribasic lead sulfate, 1-3 parts of dibasic lead phosphite, 0.1-1.0 part of barium stearate, 0.1-0.5 part of lead stearate, 0.1-0.3 part of stearic acid and 0.1-0.5 part of paraffin. Compared with the rigid polyvinyl chloride plastic cable conduit, the glass fiber reinforced rigid polyvinyl chloride plastic cable conduit has higher strength, rigidity, modulus, fatigue resistance, chemical corrosion resistance and heat resistance.
Description
The technical field is as follows:
the invention belongs to the field of macromolecules, and particularly relates to a glass fiber reinforced hard polyvinyl chloride plastic cable guide pipe and a manufacturing method thereof.
Background art:
existing cable ducts are typically made of vinyl chloride plastic. However, vinyl chloride plastics are low in strength such as tensile strength and bending strength, and the tensile strength thereof is usually not more than 35MPa, and the bending strength thereof is usually not more than 60MPa, so that they are easily broken, and vinyl chloride plastics alone are also easily corroded, and corrosion resistance and fatigue resistance thereof are also low.
The invention content is as follows:
the invention aims to provide a glass fiber reinforced hard polyvinyl chloride plastic cable conduit and a manufacturing method thereof.
In order to solve the problems, the technical scheme of the invention is as follows:
a glass fiber reinforced rigid polyvinyl chloride plastic cable duct comprising:
100 parts by weight of SG-5 type PVC resin
5-30 parts of glass fiber
5-10 parts of nano calcium carbonate powder
KH-5500.1-1.0 weight portion of coupling agent
2-5 parts of tribasic lead sulfate
1-3 parts of dibasic lead phosphite
0.1 to 1.0 weight portion of barium stearate
0.1 to 0.5 weight portion of lead stearate
0.1 to 0.3 part by weight of stearic acid
0.1-0.5 part of paraffin wax.
In a further improvement, the glass fiber has a diameter of 10 μm and a length of 0.1-1.0 mm.
In a further improvement, the diameter of the nano calcium carbonate powder is 6.5 mu m.
A manufacturing method of a glass fiber reinforced rigid polyvinyl chloride plastic cable conduit comprises the following steps:
step one, mixing 5-30 parts by weight of glass fiber with 0.1-1.0 part by weight of coupling agent KH-550, and carrying out surface treatment to obtain treated glass fiber;
mixing the treated glass fiber with 100 parts by weight of SG-5 type PVC resin, 5-10 parts by weight of nano calcium carbonate powder, 2-5 parts by weight of tribasic lead sulfate, 1-3 parts by weight of dibasic lead phosphite, 0.1-1.0 part by weight of barium stearate, 0.1-0.5 part by weight of lead stearate, 0.1-0.3 part by weight of stearic acid and 0.1-0.5 part by weight of paraffin to obtain a mixture;
and step three, uniformly stirring and mixing the mixture in a high-speed mixer, and extruding the mixture in a double-screw extruder to obtain the composite material, wherein the temperature of a cylinder of the extruder is controlled to be 150-190 ℃, and the temperature of a die is controlled to be 160-220 ℃.
In a further improvement, the mixture is stirred and mixed in a high-speed mixer for 10-20 min.
The double-screw extruder comprises a hollow shell, wherein a driving screw and a driven screw are arranged in the hollow shell, and gears are arranged on the driving screw and the driven screw and are in transmission connection through the gears; the driving screw is connected with a coupling through a bearing in a shaft mode, the coupling is connected with a rotating device, and the rotating device is a motor; the driving screw is fixed with a ratchet wheel, the end face of the coupler is fixed with a plurality of rotating shafts, the rotating shafts are connected with a gear rod matched with the ratchet wheel through torsion springs in a shaft mode, and the gear rod is arc-shaped.
The invention has the advantages that:
compared with the rigid polyvinyl chloride plastic cable conduit, the glass fiber reinforced rigid polyvinyl chloride plastic cable conduit has higher strength, rigidity, modulus, fatigue resistance, chemical corrosion resistance and heat resistance.
Drawings
FIG. 1 is a schematic view of a twin-screw extruder;
FIG. 2 is a schematic view of a connection joint of a driving screw and a coupling;
FIG. 3 is a schematic view of a perforated annular plate.
The specific implementation mode is as follows:
a manufacturing method of a glass fiber reinforced rigid polyvinyl chloride plastic cable conduit comprises the following steps:
step one, mixing 5-30 parts by weight of glass fiber with 0.1-1.0 part by weight of coupling agent KH-550, and carrying out surface treatment to obtain treated glass fiber;
mixing the treated glass fiber with 100 parts by weight of SG-5 type PVC resin, 5-10 parts by weight of nano calcium carbonate powder, 2-5 parts by weight of tribasic lead sulfate, 1-3 parts by weight of dibasic lead phosphite, 0.1-1.0 part by weight of barium stearate, 0.1-0.5 part by weight of lead stearate, 0.1-0.3 part by weight of stearic acid and 0.1-0.5 part by weight of paraffin to obtain a mixture;
and step three, stirring and mixing the mixture in a high-speed mixer for 10-20min, and extruding the mixture in a double-screw extruder, wherein the temperature of a cylinder of the extruder is controlled to be 180 ℃, and the temperature of a die is controlled to be 170 ℃.
The relevant properties of the prepared product are as follows: the tensile strength is 50-60MPa, and the bending strength is 90-100 MPa.
As shown in fig. 1 to 3, in order to ensure the temperature stability in the twin-screw extruder and prevent the reverse rotation caused by the reverse connection of the motor wire, which causes the material reverse rotation, most of the existing twin-screw extruders are modified as follows:
the double-screw extruder comprises a hollow shell 1, wherein a driving screw 2 and a driven screw 3 are arranged in the hollow shell 1, and gears 4 are arranged on the driving screw 2 and the driven screw 3 and are in transmission connection through the gears 4; the driving screw 2 is coupled with a coupling 6 through a bearing 5, the coupling 6 is connected with a rotating device 7, and the rotating device 7 is a motor; the driving screw 2 is fixed with a ratchet wheel 8, the end face of the coupling 6 is fixed with a plurality of rotating shafts 9, the rotating shafts 9 are connected with a stop lever 10 matched with the ratchet wheel 8 through torsion springs in a shaft mode, and the stop lever 10 is arc-shaped.
An annular inner shell 11 is fixed in the hollow shell 1, and the hollow shell 1 is divided into an inner cavity 12 and an outer cavity 13 by the annular inner shell 11; one end of the inner cavity 12 is communicated with a liquid inlet pipe 14, and the other end of the inner cavity 12 is communicated with the outer cavity 13 through a communicating pipe 15; the adjacent ends of the outer cavity 13 and the liquid inlet pipe 14 are communicated with a liquid outlet pipe 16; the liquid outlet pipe 16 is communicated with the top of the heating oil storage tank 17, and the liquid inlet pipe 14 is communicated with the bottom of the heating oil storage tank 17; a circulating pump 18 is arranged on the liquid inlet pipe 14, and a heater 19 is arranged at the bottom of the heating oil storage tank 17. An annular perforated plate 20 is mounted within the inner chamber 12. An air inlet pipe 21 and an air outlet pipe 22 are installed at the top of the heating oil storage tank 17, a one-way valve 23 is installed on the air inlet pipe 21, and a pressure valve 24 is installed on the air outlet pipe 22. For adjusting the pressure balance in the heating oil storage tank 17.
When the heating oil heating device is used, the heating oil is heated, then is pumped out through the liquid inlet pipe 14, is conveyed to the inner cavity 12 to heat materials, then flows to the outer cavity 13 through the communicating pipe 15, and then returns to the heating oil storage tank 17 to be heated again, and because the heating oil after the temperature reduction of the backflow is filled in the outer cavity 13, the heating oil in the inner cavity plays a heat preservation effect, so that the influence of the external temperature is effectively reduced. When the motor rotates forwards, the stop rod 10 on the coupler drives the ratchet wheel to drive the driving screw rod 2 to rotate, and when the motor rotates backwards, the stop rod 10 slides along the surface of the ratchet wheel upper ratchet teeth to be in transmission connection with the motor so that the driving screw rod 2 is separated from the motor, and the motor is effectively prevented from rotating backwards.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A glass fiber reinforced rigid polyvinyl chloride plastic cable duct, comprising:
100 parts by weight of SG-5 type PVC resin
5-30 parts of glass fiber
5-10 parts of nano calcium carbonate powder
KH-5500.1-1.0 weight portion of coupling agent
2-5 parts of tribasic lead sulfate
1-3 parts of dibasic lead phosphite
0.1 to 1.0 weight portion of barium stearate
0.1 to 0.5 weight portion of lead stearate
0.1 to 0.3 part by weight of stearic acid
0.1-0.5 part of paraffin wax.
2. The glass-fiber reinforced rigid polyvinyl chloride plastic cable duct according to claim 1, wherein the glass fibers have a diameter of 10 μm and a length of 0.1 to 1.0 mm.
3. The glass fiber reinforced rigid polyvinyl chloride plastic cable duct of claim 1, wherein the nano calcium carbonate powder has a particle size of 6.5 μm.
4. The manufacturing method of the glass fiber reinforced rigid polyvinyl chloride plastic cable conduit is characterized by comprising the following steps:
step one, mixing 5-30 parts by weight of glass fiber with 0.1-1.0 part by weight of coupling agent KH-550, and carrying out surface treatment to obtain treated glass fiber;
mixing the treated glass fiber with 100 parts by weight of SG-5 type PVC resin, 5-10 parts by weight of nano calcium carbonate powder, 2-5 parts by weight of tribasic lead sulfate, 1-3 parts by weight of dibasic lead phosphite, 0.1-1.0 part by weight of barium stearate, 0.1-0.5 part by weight of lead stearate, 0.1-0.3 part by weight of stearic acid and 0.1-0.5 part by weight of paraffin to obtain a mixture;
and step three, uniformly stirring and mixing the mixture in a high-speed mixer, and extruding the mixture in a double-screw extruder to obtain the composite material, wherein the temperature of a cylinder of the extruder is controlled to be 150-190 ℃, and the temperature of a die is controlled to be 160-220 ℃.
5. The method for manufacturing a glass fiber reinforced rigid polyvinyl chloride plastic cable duct according to claim 4, wherein the mixture is stirred and mixed in a high speed mixer for 10-20 min.
6. The manufacturing method of the glass fiber reinforced rigid polyvinyl chloride plastic cable duct according to claim 4, wherein the twin-screw extruder comprises a hollow shell (1), the hollow shell (1) is internally provided with a driving screw (2) and a driven screw (3), and the driving screw (2) and the driven screw (3) are respectively provided with a gear (4) and are in transmission connection through the gear (4); the driving screw (2) is coupled with a coupling (6) through a bearing (5), the coupling (6) is connected with a rotating device (7), and the rotating device (7) is a motor; the driving screw rod (2) is fixed with a ratchet wheel (8), the end face of the coupling (6) is fixed with a plurality of rotating shafts (9), the rotating shafts (9) are connected with a gear rod (10) matched with the ratchet wheel (8) through torsion springs in a shaft mode, and the gear rod (10) is arc-shaped.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011222412.1A CN112175328A (en) | 2020-11-05 | 2020-11-05 | Glass fiber reinforced hard polyvinyl chloride plastic cable guide pipe and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011222412.1A CN112175328A (en) | 2020-11-05 | 2020-11-05 | Glass fiber reinforced hard polyvinyl chloride plastic cable guide pipe and manufacturing method thereof |
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| CN112175328A true CN112175328A (en) | 2021-01-05 |
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| CN202011222412.1A Pending CN112175328A (en) | 2020-11-05 | 2020-11-05 | Glass fiber reinforced hard polyvinyl chloride plastic cable guide pipe and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115466470A (en) * | 2022-10-12 | 2022-12-13 | 武汉飞恩微电子有限公司 | Anti-freezing foaming tube for urea pressure sensor and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101348594A (en) * | 2008-08-28 | 2009-01-21 | 广东联塑科技实业有限公司 | Glass fiber reinforced unplasticised polyvinyl chloride material and preparation thereof |
| CN105860332A (en) * | 2016-04-21 | 2016-08-17 | 安徽华宇管道制造有限公司 | Manufacturing method of water supply rigid polyvinyl chloride tube |
| CN106564172A (en) * | 2016-08-09 | 2017-04-19 | 青岛三益塑料机械有限公司 | Conical double-screw PVC skinning foaming plate extruder |
| WO2018086159A1 (en) * | 2016-11-09 | 2018-05-17 | 陈建华 | High strength nano plastic and preparation method therefor |
-
2020
- 2020-11-05 CN CN202011222412.1A patent/CN112175328A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101348594A (en) * | 2008-08-28 | 2009-01-21 | 广东联塑科技实业有限公司 | Glass fiber reinforced unplasticised polyvinyl chloride material and preparation thereof |
| CN105860332A (en) * | 2016-04-21 | 2016-08-17 | 安徽华宇管道制造有限公司 | Manufacturing method of water supply rigid polyvinyl chloride tube |
| CN106564172A (en) * | 2016-08-09 | 2017-04-19 | 青岛三益塑料机械有限公司 | Conical double-screw PVC skinning foaming plate extruder |
| WO2018086159A1 (en) * | 2016-11-09 | 2018-05-17 | 陈建华 | High strength nano plastic and preparation method therefor |
Non-Patent Citations (1)
| Title |
|---|
| 王亚明等, 中国轻工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115466470A (en) * | 2022-10-12 | 2022-12-13 | 武汉飞恩微电子有限公司 | Anti-freezing foaming tube for urea pressure sensor and preparation method thereof |
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Application publication date: 20210105 |