CN114230936A - Polyurethane and PVC composite casing pipe and preparation method thereof - Google Patents
Polyurethane and PVC composite casing pipe and preparation method thereof Download PDFInfo
- Publication number
- CN114230936A CN114230936A CN202010941789.6A CN202010941789A CN114230936A CN 114230936 A CN114230936 A CN 114230936A CN 202010941789 A CN202010941789 A CN 202010941789A CN 114230936 A CN114230936 A CN 114230936A
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- polyurethane
- pvc
- stearate
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- pvc composite
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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
-
- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- 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)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of composite sleeves and discloses a polyurethane and PVC composite sleeve, which is prepared from the following materials in parts by weight: 100 parts of polyurethane elastomer: 1-10 parts of dioctyl phthalate: 8-12 parts of stearate: 1-2 parts of paraffin: 1-2 parts of a heat stabilizer: 2.5-3 parts of plasticizer: 2-3 parts. According to the polyurethane and PVC composite sleeve and the preparation method thereof, a polyurethane elastomer is added into ingredients of the PVC sleeve, PVC is subjected to blending modification by utilizing designability of polyurethane elastomer molecules and characteristics of high elasticity, high wear resistance, low temperature resistance and good solvent resistance of the elastomer, so that the performance of a PVC product is remarkably improved, and the performance of the PVC product is improved by combining with a synthetic reaction of a PU elastomer and by virtue of dioctyl phthalate, a plasticizer and a heat stabilizer.
Description
Technical Field
The invention relates to the technical field of composite sleeves, in particular to a polyurethane and PVC composite sleeve and a preparation method thereof.
Background
PVC adopts non-crystalline materials as raw materials, has ultrahigh performance on oxidation resistance, strong acid resistance and reduction resistance, has high strength and excellent stability, is not flammable, can resist corrosion damage and other phenomena caused by climate change, is a very good material, is visible everywhere in life due to high safety, has a special function of thermal contraction, can be contracted when heated to more than 98 ℃, and is convenient to use.
The polyurethane has a thermoplastic linear structure, has better stability, chemical resistance, rebound resilience and mechanical property than a PVC foaming material, has smaller compression deformability and good heat insulation, sound insulation, shock resistance and gas resistance, and is used as a packaging, sound insulation and filtering material.
Due to the structural defects of PVC, the product has poor thermal stability, low impact resistance, poor wear resistance, poor solvent resistance and low temperature resistance and is difficult to process, so that the application of the product as a hard product is greatly limited.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a polyurethane and PVC composite sleeve and a preparation method thereof.
The invention provides the following technical scheme: a polyurethane and PVC composite sleeve is prepared from the following materials in parts by weight:
preferably, the stearate is one or more of sodium stearate, magnesium stearate, calcium stearate, lead stearate and aluminum stearate.
Preferably, the plasticizer is one or more of phthalate plasticizers and phosphate plasticizers.
Preferably, the heat stabilizer is one or more of tribasic lead sulfate and dibasic lead sulfate.
The preparation method of the polyurethane and PVC composite sleeve comprises the following steps:
s1, uniformly mixing PVC, dioctyl phthalate, stearate, paraffin, a heat stabilizer and a plasticizer in a high-speed stirrer according to the formula proportion, and preplasticizing for 10-15min in a drying oven at 100 ℃;
s2, putting the polyurethane elastomer into a vacuum drier, and vacuum-drying at 50 ℃ for 5h to remove surface moisture;
s3, uniformly mixing the pre-plasticized PVC and the polyurethane elastomer, adding the mixture into a double-screw extruder, controlling the proper temperature and the proper screw rotating speed to enable the materials to react in the extrusion process, cutting the extruded material into granules, and plasticizing and molding the extruded material in a pipe sleeve molding machine.
Compared with the prior art, the invention has the following beneficial effects:
according to the polyurethane and PVC composite sleeve and the preparation method, a polyurethane elastomer is added into ingredients of the PVC sleeve, PVC is subjected to blending modification by utilizing the designability of polyurethane elastomer molecules and the characteristics of high elasticity, high wear resistance, low temperature resistance and good solvent resistance of the elastomer, the performance of a PVC product is remarkably improved, the synthetic reaction of a PU elastomer is combined, and the performance of the PVC product is improved through dioctyl phthalate, a plasticizer and a heat stabilizer;
when in processing, the PVC and the polyurethane elastomer are pre-plasticized, the injection molding efficiency and quality of the thermoplastic plastic are improved, and the mixture is introduced into an extruder to be made into particles, so that the sleeve is conveniently extruded and molded.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure are clearly and completely described. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.
To maintain the following description of the embodiments of the present disclosure clear and concise, detailed descriptions of known functions and known components are omitted so as to not unnecessarily obscure the concepts of the present disclosure.
A polyurethane and PVC composite sleeve is prepared from the following materials in parts by weight:
the stearate is one or more of sodium stearate, magnesium stearate, calcium stearate, lead stearate and aluminum stearate; the plasticizer is one or more of phthalate plasticizers and phosphate plasticizers; the heat stabilizer is one or more of tribasic lead sulfate and dibasic lead sulfate.
The preparation method of the polyurethane and PVC composite sleeve comprises the following steps:
s1, uniformly mixing PVC, dioctyl phthalate, stearate, paraffin, a heat stabilizer and a plasticizer in a high-speed stirrer according to the formula proportion, and preplasticizing for 10-15min in a drying oven at 100 ℃;
s2, putting the polyurethane elastomer into a vacuum drier, and vacuum-drying at 50 ℃ for 5h to remove surface moisture;
s3, uniformly mixing the pre-plasticized PVC and the polyurethane elastomer, adding the mixture into a double-screw extruder, controlling the proper temperature and the proper screw rotating speed to enable the materials to react in the extrusion process, cutting the extruded material into granules, and plasticizing and molding the extruded material in a pipe sleeve molding machine.
Example 1
A polyurethane and PVC composite sleeve is prepared from the following materials in parts by weight:
the stearate is one or more of sodium stearate, magnesium stearate, calcium stearate, lead stearate and aluminum stearate; the plasticizer is one or more of phthalate plasticizers and phosphate plasticizers; the heat stabilizer is one or more of tribasic lead sulfate and dibasic lead sulfate.
The preparation method of the polyurethane and PVC composite sleeve comprises the following steps:
s1, uniformly mixing PVC, dioctyl phthalate, stearate, paraffin, a heat stabilizer and a plasticizer in a high-speed stirrer according to the formula proportion, and preplasticizing for 10-15min in a drying oven at 100 ℃;
s2, putting the polyurethane elastomer into a vacuum drier, and vacuum-drying at 50 ℃ for 5h to remove surface moisture;
s3, uniformly mixing the pre-plasticized PVC and the polyurethane elastomer, adding the mixture into a double-screw extruder, controlling the proper temperature and the proper screw rotating speed to enable the materials to react in the extrusion process, cutting the extruded material into granules, and plasticizing and molding the extruded material in a pipe sleeve molding machine.
Example 2
A polyurethane and PVC composite sleeve is prepared from the following materials in parts by weight:
the stearate is one or more of sodium stearate, magnesium stearate, calcium stearate, lead stearate and aluminum stearate; the plasticizer is one or more of phthalate plasticizers and phosphate plasticizers; the heat stabilizer is one or more of tribasic lead sulfate and dibasic lead sulfate.
The preparation method of the polyurethane and PVC composite sleeve comprises the following steps:
s1, uniformly mixing PVC, dioctyl phthalate, stearate, paraffin, a heat stabilizer and a plasticizer in a high-speed stirrer according to the formula proportion, and preplasticizing for 10-15min in a drying oven at 100 ℃;
s2, putting the polyurethane elastomer into a vacuum drier, and vacuum-drying at 50 ℃ for 5h to remove surface moisture;
s3, uniformly mixing the pre-plasticized PVC and the polyurethane elastomer, adding the mixture into a double-screw extruder, controlling the proper temperature and the proper screw rotating speed to enable the materials to react in the extrusion process, cutting the extruded material into granules, and plasticizing and molding the extruded material in a pipe sleeve molding machine.
Example 3
A polyurethane and PVC composite sleeve is prepared from the following materials in parts by weight:
the stearate is one or more of sodium stearate, magnesium stearate, calcium stearate, lead stearate and aluminum stearate; the plasticizer is one or more of phthalate plasticizers and phosphate plasticizers; the heat stabilizer is one or more of tribasic lead sulfate and dibasic lead sulfate.
The preparation method of the polyurethane and PVC composite sleeve comprises the following steps:
s1, uniformly mixing PVC, dioctyl phthalate, stearate, paraffin, a heat stabilizer and a plasticizer in a high-speed stirrer according to the formula proportion, and preplasticizing for 10-15min in a drying oven at 100 ℃;
s2, putting the polyurethane elastomer into a vacuum drier, and vacuum-drying at 50 ℃ for 5h to remove surface moisture;
s3, uniformly mixing the pre-plasticized PVC and the polyurethane elastomer, adding the mixture into a double-screw extruder, controlling the proper temperature and the proper screw rotating speed to enable the materials to react in the extrusion process, cutting the extruded material into granules, and plasticizing and molding the extruded material in a pipe sleeve molding machine.
The composite sleeves formed in examples 1, 2 and 3 were tested with the existing PVC sleeves, and the test results were as follows:
| performance of | Example 1 | Example 2 | Example 3 | PVC sleeve |
| Hardness (SHOreA) | 73 | 76 | 70 | 60 |
| Tensile Strength (MPa) | 56 | 53 | 59 | 43 |
| Impact Strength (J/m) | 298 | 280 | 310 | 250 |
| Flexural Strength (MPa) | 96 | 91 | 100 | 86 |
Therefore, the performance of the polyurethane and PVC composite sleeve is superior to that of the PVC sleeve.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.
Claims (5)
1. The polyurethane and PVC composite bushing is characterized by being prepared from the following materials in parts by weight:
2. the polyurethane and PVC composite bushing of claim 1, wherein the stearate is one or more of sodium stearate, magnesium stearate, calcium stearate, lead stearate, and aluminum stearate.
3. The polyurethane and PVC composite bushing of claim 1, wherein: the plasticizer is one of phthalate and phosphate plasticizers.
4. The polyurethane and PVC composite bushing of claim 1, wherein: the heat stabilizer is one or more of tribasic lead sulfate and dibasic lead sulfate.
5. The preparation method of the polyurethane and PVC composite sleeve according to claim 1, characterized by comprising the following steps:
s1, uniformly mixing PVC, dioctyl phthalate, stearate, paraffin, a heat stabilizer and a plasticizer in a high-speed stirrer according to the formula proportion, and preplasticizing for 10-15min in a drying oven at 100 ℃;
s2, putting the polyurethane elastomer into a vacuum drier, and vacuum-drying at 50 ℃ for 5h to remove surface moisture;
s3, uniformly mixing the pre-plasticized PVC and the polyurethane elastomer, adding the mixture into a double-screw extruder, controlling the proper temperature and the proper screw rotating speed to enable the materials to react in the extrusion process, cutting the extruded material into granules, and plasticizing and molding the extruded material in a pipe sleeve molding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010941789.6A CN114230936A (en) | 2020-09-09 | 2020-09-09 | Polyurethane and PVC composite casing pipe and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010941789.6A CN114230936A (en) | 2020-09-09 | 2020-09-09 | Polyurethane and PVC composite casing pipe and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114230936A true CN114230936A (en) | 2022-03-25 |
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| CN202010941789.6A Pending CN114230936A (en) | 2020-09-09 | 2020-09-09 | Polyurethane and PVC composite casing pipe and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06200106A (en) * | 1993-01-06 | 1994-07-19 | Tosoh Corp | Production of polyvinyl chloride-polyurethane elastomer |
| EP0921160A1 (en) * | 1997-12-08 | 1999-06-09 | Basf Aktiengesellschaft | Transparent mixtures containing thermoplastic polyisocyanate polyaddition products, polyvinyl chloride and stabilizers |
| CN104371211A (en) * | 2014-10-11 | 2015-02-25 | 上海新上化高分子材料有限公司 | Polyvinyl chloride / polyurethane elastomer medical material and preparation method thereof |
| CN107513243A (en) * | 2017-09-12 | 2017-12-26 | 无锡市永兴金属软管有限公司 | A kind of buried high voltage power cable sheath tubing and preparation method thereof |
| CN108164862A (en) * | 2016-12-07 | 2018-06-15 | 上海凯波特种电缆料厂有限公司 | A kind of electric automobile charging pile cable dumb light PVC sheath material and preparation method thereof |
-
2020
- 2020-09-09 CN CN202010941789.6A patent/CN114230936A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06200106A (en) * | 1993-01-06 | 1994-07-19 | Tosoh Corp | Production of polyvinyl chloride-polyurethane elastomer |
| EP0921160A1 (en) * | 1997-12-08 | 1999-06-09 | Basf Aktiengesellschaft | Transparent mixtures containing thermoplastic polyisocyanate polyaddition products, polyvinyl chloride and stabilizers |
| CN104371211A (en) * | 2014-10-11 | 2015-02-25 | 上海新上化高分子材料有限公司 | Polyvinyl chloride / polyurethane elastomer medical material and preparation method thereof |
| CN108164862A (en) * | 2016-12-07 | 2018-06-15 | 上海凯波特种电缆料厂有限公司 | A kind of electric automobile charging pile cable dumb light PVC sheath material and preparation method thereof |
| CN107513243A (en) * | 2017-09-12 | 2017-12-26 | 无锡市永兴金属软管有限公司 | A kind of buried high voltage power cable sheath tubing and preparation method thereof |
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