CN113105700A - PVC-M pipe with excellent wear resistance - Google Patents
PVC-M pipe with excellent wear resistance Download PDFInfo
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- CN113105700A CN113105700A CN202110227319.8A CN202110227319A CN113105700A CN 113105700 A CN113105700 A CN 113105700A CN 202110227319 A CN202110227319 A CN 202110227319A CN 113105700 A CN113105700 A CN 113105700A
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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
- 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
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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
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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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
- 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)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a PVC-M pipe with excellent wear resistance, which comprises 100 parts of PVC resin, 2.5-3 parts of heat stabilizer, 10-12 parts of impact modifier, 2-5 parts of lubricant, 8-12 parts of wear-resistant modifier and 2-3 parts of superfine active calcium carbonate; the wear-resistant modifier is silicon gas-phase dioxide or high-hardness silicate mineral with a flaky jade structure or a mixture of the silicon gas-phase dioxide and the silicate mineral, and can well enhance the interface compatibility with PVC molecules, so that the wear resistance of the PVC-M pipe is greatly improved.
Description
Technical Field
The invention relates to the field of production and processing of PVC pipes, in particular to a PVC-M pipe with excellent wear resistance.
Background
The PVC-M pipe is a novel green lead-free drinking water high-impact-resistant pipe with excellent toughness and impact resistance. The product integrates the excellent performances of two pipes, namely a PVC-U pipe and a PE pipe, and has the advantages of good toughness, high safety and convenience and quickness in installation. The PVC-M pipe is a general name of impact-resistant modified hard polyvinyl chloride pipe for water supply, and various modified polyvinyl chloride pipe systems with good impact resistance and cracking resistance and high strength are developed by adding high-quality MBS toughening resin to improve toughness.
PVC has poor wear resistance, and when liquid containing waste residues is conveyed, the wall thickness of the PVC pipe is thinned to be damaged due to the fact that the PVC pipe is in contact friction with the waste residues for a long time. The wear resistance of the PVC pipe is generally improved by adding inorganic filler which is hard in texture, difficult to damage in structure and subjected to coupling treatment into PVC, such as calcium carbonate with a whisker structure, but the whisker material is brittle and easy to break under the action of mechanical force such as shearing in processing, so that the wear resistance of the PVC pipe is limited to be improved. There is therefore a need for further improved wear resistance of PVC tubing to achieve longer service life.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a PVC-M pipe with excellent wear resistance.
In order to achieve the purpose, the invention adopts the following technical scheme:
a PVC-M pipe with excellent wear resistance is prepared by adding a wear-resistant modifier into a PVC-M raw material, wherein the PVC-M pipe comprises the following raw materials in parts by weight: 100 parts of PVC resin, 2.5-3 parts of heat stabilizer, 10-12 parts of impact modifier, 2-5 parts of lubricant, 8-12 parts of wear-resistant modifier and 2-3 parts of superfine active calcium carbonate; the wear-resistant modifier is silicon gas-phase dioxide or high-hardness silicate mineral with a flaky jade structure, or a mixture of the silicon gas-phase dioxide and the high-hardness silicate mineral with the flaky jade structure.
Preferably, the heat stabilizer is an organic tin stabilizer; the impact modifier is MBS; the lubricant comprises an inner lubricant and an outer lubricant, wherein the inner lubricant adopts ZB-60 as the inner lubricant, and the outer lubricant adopts polyethylene wax or microcrystalline wax.
Preferably, when the wear-resistant modifier is a mixture of silicon gas-phase dioxide and high-hardness silicate mineral with a flaky jade structure, the silicon gas-phase dioxide accounts for 3 parts, and the high-hardness silicate mineral with a flaky jade structure accounts for 7 parts.
Preferably, when the wear-resistant modifier is a mixture of silicon gas-phase dioxide and high-hardness silicate mineral with a flaky jade structure, the silicon gas-phase dioxide is 4 parts, and the high-hardness silicate mineral with a flaky jade structure is 6 parts.
Preferably, when the wear-resistant modifier is a mixture of silicon gas-phase dioxide and high-hardness silicate mineral with a flaky jade structure, the silicon gas-phase dioxide accounts for 5 parts, and the high-hardness silicate mineral with a flaky jade structure accounts for 5 parts.
Compared with the prior art, the wear-resistant modifier is added into the raw material of the PVC-M in a proper proportion, the selected wear-resistant modifier is silicon gas-phase dioxide or high-hardness silicate mineral substance with a flaky jade structure, or a mixture of the silicon gas-phase dioxide and the high-hardness silicate mineral substance with the flaky jade structure, the cost is low, but the interface compatibility with PVC molecules can be well enhanced, so that the wear resistance of the PVC-M pipe is greatly improved.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
The invention provides a PVC-M pipe with excellent wear resistance, wherein a wear-resistant modifier is added into a PVC-M raw material, and the raw material ratio of the PVC-M pipe is as follows: 100 parts of PVC resin, 2.5-3 parts of heat stabilizer, 10-12 parts of impact modifier, 2-5 parts of lubricant, 8-12 parts of wear-resistant modifier and 2-3 parts of superfine active calcium carbonate; the wear-resistant modifier is silicon gas-phase dioxide or high-hardness silicate mineral with a flaky jade structure, or a mixture of the silicon gas-phase dioxide and the high-hardness silicate mineral with the flaky jade structure.
Preferably, the heat stabilizer is an organic tin stabilizer; the impact modifier is MBS; the lubricant comprises an inner lubricant and an outer lubricant, wherein the inner lubricant adopts ZB-60 as the inner lubricant, and the outer lubricant adopts polyethylene wax or microcrystalline wax.
A sample material is taken from the PVC-M pipe, the material is pressed into a sheet with the thickness of 3 mm, the sample is weighed to be 0.001g, the material is fixed on a wear-resistant tester, the material is weighed again after scraping and grinding for a set number of times, the weight difference of the sample before and after scraping and grinding can be used for representing the wear resistance of the sample, and the smaller the wear loss is, the better the wear resistance of the material is.
Example 1, the wear resistance modifier was selected from the group consisting of silicon vapor phase dioxide, and the results of the wear resistance test are shown in table 1.
TABLE 1 abrasion resistance test results of the use of fumed silica of silicon as an abrasion resistance modifier
As can be seen from Table 1, the abrasion loss gradually decreased as the amount of fumed silica of silicon increased, but the tensile strength increased first and then decreased, and the combined result of the abrasion resistance and mechanical properties of the PVC-M pipe was the best when fumed silica of silicon was added to 9, 10 and 11 parts.
In example 2, all the wear-resistant modifiers are high-hardness silicate minerals with flaky jade structures, and the wear-resistant test results are shown in table 2.
TABLE 2 abrasion resistance test results of high hardness silicate mineral with flaky jade structure as abrasion resistance modifier
As can be seen from Table 2, as the amount of the high hardness silicate mineral having a flaky jade structure increases, the wear amount gradually decreases, but the tensile strength increases first and then decreases, and in combination, the combined result of the wear resistance and the mechanical properties of the PVC-M pipe is the best when the fumed silica of silicon is added to 11 parts and 12 parts.
Example 3 the wear-resistant modifier was selected from a mixture of silicon vapour phase dioxide and a high hardness silicate mineral with a flaky jade structure, the silicon vapour phase dioxide being 3 parts and the high hardness silicate mineral with a flaky jade structure being 7 parts. The abrasion loss after the abrasion resistance test is 1.228g, and the tensile strength after the mechanical property test is 46.2 MPa.
Example 4, when the wear-resistant modifier is a mixture of silicon gas-phase dioxide and a high-hardness silicate mineral having a flaky jade structure, the amount of the silicon gas-phase dioxide is 4 parts, and the amount of the high-hardness silicate mineral having a flaky jade structure is 6 parts. The abrasion loss after the abrasion resistance test is 1.230g, and the tensile strength after the mechanical property test is 46.2 MPa.
Example 5, when the wear-resistant modifier is a mixture of silicon gas-phase dioxide and a high-hardness silicate mineral having a flaky jade structure, the amount of the silicon gas-phase dioxide is 5 parts, and the amount of the high-hardness silicate mineral having a flaky jade structure is 5 parts. The abrasion loss after the abrasion resistance test is 1.233g, and the tensile strength after the mechanical property test is 46.0 MPa.
According to the invention, the wear-resistant modifier is added into the raw material of PVC-M in a proper proportion, the selected wear-resistant modifier is silicon gas-phase dioxide or high-hardness silicate mineral substance with a flaky jade structure, or a mixture of the silicon gas-phase dioxide and the high-hardness silicate mineral substance with the flaky jade structure, the cost is low, but the interface compatibility with PVC molecules can be well enhanced, so that the wear resistance of the PVC-M pipe is greatly improved.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.
Claims (5)
1. The PVC-M pipe with excellent wear resistance is characterized in that a wear-resistant modifier is added into a PVC-M raw material, and the raw material ratio of the PVC-M pipe is as follows: 100 parts of PVC resin, 2.5-3 parts of heat stabilizer, 10-12 parts of impact modifier, 2-5 parts of lubricant, 8-12 parts of wear-resistant modifier and 2-3 parts of superfine active calcium carbonate; the wear-resistant modifier is silicon gas-phase dioxide or high-hardness silicate mineral with a flaky jade structure, or a mixture of the silicon gas-phase dioxide and the high-hardness silicate mineral with the flaky jade structure.
2. The PVC-M pipe having excellent wear resistance according to claim 1, wherein: the heat stabilizer is selected from an organic tin stabilizer; the impact modifier is MBS; the lubricant comprises an inner lubricant and an outer lubricant, wherein the inner lubricant adopts ZB-60 as the inner lubricant, and the outer lubricant adopts polyethylene wax or microcrystalline wax.
3. The PVC-M pipe having excellent wear resistance according to claim 1, wherein: when the wear-resistant modifier is a mixture of silicon gas-phase dioxide and high-hardness silicate mineral with a flaky jade structure, the silicon gas-phase dioxide accounts for 3 parts, and the high-hardness silicate mineral with a flaky jade structure accounts for 7 parts.
4. The PVC-M pipe having excellent wear resistance according to claim 1, wherein: when the wear-resistant modifier is a mixture of silicon gas-phase dioxide and high-hardness silicate mineral with a flaky jade structure, 4 parts of silicon gas-phase dioxide and 6 parts of high-hardness silicate mineral with a flaky jade structure are selected.
5. The PVC-M pipe having excellent wear resistance according to claim 1, wherein: when the wear-resistant modifier is a mixture of silicon gas-phase dioxide and high-hardness silicate mineral with a flaky jade structure, 5 parts of silicon gas-phase dioxide and 5 parts of high-hardness silicate mineral with a flaky jade structure are selected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110227319.8A CN113105700A (en) | 2021-03-01 | 2021-03-01 | PVC-M pipe with excellent wear resistance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110227319.8A CN113105700A (en) | 2021-03-01 | 2021-03-01 | PVC-M pipe with excellent wear resistance |
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| CN113105700A true CN113105700A (en) | 2021-07-13 |
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| CN202110227319.8A Pending CN113105700A (en) | 2021-03-01 | 2021-03-01 | PVC-M pipe with excellent wear resistance |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101921441A (en) * | 2009-06-16 | 2010-12-22 | 中国石油化工股份有限公司 | Soft polyvinyl chloride plastic composite with abrasion resistance |
| CN102964714A (en) * | 2011-08-31 | 2013-03-13 | 中国石油化工股份有限公司 | Scraping and wear-resistant impact-resistant polyvinyl chloride tube material and preparation method |
| CN106751225A (en) * | 2017-01-12 | 2017-05-31 | 芜湖航天特种电缆厂股份有限公司 | Wear-resistant cable sheath material and preparation method thereof |
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2021
- 2021-03-01 CN CN202110227319.8A patent/CN113105700A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101921441A (en) * | 2009-06-16 | 2010-12-22 | 中国石油化工股份有限公司 | Soft polyvinyl chloride plastic composite with abrasion resistance |
| CN102964714A (en) * | 2011-08-31 | 2013-03-13 | 中国石油化工股份有限公司 | Scraping and wear-resistant impact-resistant polyvinyl chloride tube material and preparation method |
| CN106751225A (en) * | 2017-01-12 | 2017-05-31 | 芜湖航天特种电缆厂股份有限公司 | Wear-resistant cable sheath material and preparation method thereof |
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Application publication date: 20210713 |