CN112831135A - High-impact-resistance PVC pipe material and preparation method and application thereof - Google Patents
High-impact-resistance PVC pipe material and preparation method and application thereof Download PDFInfo
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- CN112831135A CN112831135A CN202011638195.4A CN202011638195A CN112831135A CN 112831135 A CN112831135 A CN 112831135A CN 202011638195 A CN202011638195 A CN 202011638195A CN 112831135 A CN112831135 A CN 112831135A
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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
Abstract
The invention belongs to the technical field of PVC (polyvinyl chloride) pipe production, and particularly relates to a high-impact-resistance PVC pipe material and a preparation method and application thereof. The material is mainly prepared by mixing talcum powder, calcium carbonate, a mono-alkoxy titanate coupling agent, N-phenylmaleimide, dicumyl peroxide and other auxiliary materials, the added N-phenylmaleimide can avoid the hydrolysis of the titanate coupling agent, the dicumyl peroxide can enhance the connection between the N-phenylmaleimide and PVC resin, the stability of the PVC resin is improved, and the components act together to achieve the effect of remarkably improving the mechanical properties of the material, such as impact resistance, tensile strength and the like.
Description
Technical Field
The invention belongs to the technical field of PVC pipe production. And more particularly, to a high impact PVC pipe material, a method of making the same, and applications thereof.
Background
Since the 21 st century, the weather changes a lot and the rainfall is abnormal. In the temporary rainy season, in a siphon rainwater drainage system of a high-rise building, due to the change of rainfall, a PVC drainage pipeline undergoes the pressure flow change of complete gravity flow, two flows and complete full flow, the impact force of water flow in the pipeline is multiplied due to the sudden change of the rainfall, and meanwhile, the phenomenon of water hammer is caused, so that the PVC pipeline is damaged. The requirement on the impact resistance of the PVC drainage pipe is very high, and the impact strength of the PVC drainage pipe filled with the common calcium carbonate cannot meet the requirement.
At present, high-performance PVC drainage high-impact pipes in the market are generally filled with surface-treated nanoscale fillers, so that the compatibility of inorganic particles and polymers is improved, and the mechanical properties of the pipes are enhanced. Such as calcium carbonate, talcum powder and the like, but calcium carbonate particles are irregular blocks, have hydrophilic and oleophobic surfaces and high surface energy, are easy to agglomerate among the particles, and easily leave a large number of gaps among the particles when the calcium carbonate particles are directly or greatly filled into an organic matrix material, so that the calcium carbonate particles are difficult to uniformly disperse, and the impact property of a product is reduced; the nano talcum powder has the defects of reducing tensile strength, increasing brittleness and reducing melt flow index of the mixture, and is expensive in manufacturing cost and not suitable for being added in large quantities. In order to solve the problems, the Chinese patent application CN107778730A discloses a method for preparing a PVC pipe with a stainless steel effect, wherein a monoalkoxy titanate coupling agent is added in the pipe and is blended and modified with other raw materials, so that the monoalkoxy titanate coupling agent is uniformly dispersed in PVC resin. However, in practical application, it is found that the monoalkoxy titanate coupling agent is very easy to hydrolyze, and is usually dissolved in organic solvents such as petroleum ether and benzene alcohol for dilution treatment, and it is also required to ensure that no water exists in the material, so that on one hand, a large amount of manpower and material resources are wasted, and on the other hand, organic solvents such as petroleum ether and benzene alcohol are still remained in the product, which causes environmental pollution, and cannot be used in a large scale.
Disclosure of Invention
The invention aims to solve the technical problems that the existing monoalkoxy titanate coupling agent is easy to hydrolyze, water is not needed in the material, an organic solvent is needed for dissolving, and a large amount of manpower and material resources are consumed, and provides a PVC pipe material which avoids hydrolysis of the monoalkoxy titanate coupling agent, utilizes the monoalkoxy titanate coupling agent to modify a filler, and improves mechanical properties such as impact resistance, tensile strength and the like.
The invention aims to provide a high-impact PVC pipe material.
It is another object of the present invention to provide a method for preparing the high impact PVC pipe material.
The invention also aims to provide application of the high-impact PVC pipe material in preparation of water supply and drainage pipes.
It is another object of the present invention to provide a high impact PVC pipe.
The above purpose of the invention is realized by the following technical scheme:
a high impact PVC pipe material comprises the following components in parts by weight:
100 parts of PVC resin, 10-20 parts of calcium carbonate, 1-10 parts of talcum powder, 1-8 parts of calcium-zinc stabilizer, 2-4 parts of lubricant, 0-5 parts of titanium dioxide, 1-5 parts of monoalkoxy titanate coupling agent, 1-5 parts of N-phenyl maleimide and 1-2 parts of dicumyl peroxide.
In the invention, N-phenylmaleimide and dicumyl peroxide are introduced as auxiliary agents to assist the mono-alkoxy titanate coupling agent to carry out surface treatment on calcium carbonate and talcum powder. Wherein, the N-phenylmaleimide reacts actively at high temperature and can be combined with free water in calcium carbonate and talcum powder for ring opening, so that the hydrolysis reaction of a mono-alkoxy titanate coupling agent is avoided; after ring opening, the modified polyvinyl chloride resin can be connected with functional groups in the mono-alkoxy titanate coupling agent and combined with free chloride ions on the PVC resin, so that the compatibility of the filler is improved. The dicumyl peroxide plays a role in crosslinking, is beneficial to building a connecting link of the N-phenylmaleimide and the PVC resin, and ensures the stability of the PVC material. The mono-alkoxy titanate coupling agent can effectively perform surface treatment on calcium carbonate and talcum powder, is beneficial to uniform dispersion of the calcium carbonate, the talcum powder and PVC resin, and can remarkably enhance the impact resistance of the PVC pipe.
Preferably, the high impact PVC pipe material comprises the following components in parts by weight:
100 parts of PVC resin, 15-20 parts of calcium carbonate, 5-10 parts of talcum powder, 5-8 parts of calcium-zinc stabilizer, 2-3 parts of lubricant, 2-5 parts of titanium dioxide, 1-3 parts of monoalkoxy titanate coupling agent, 1-3 parts of N-phenyl maleimide and 1-2 parts of dicumyl peroxide.
More preferably, the high impact PVC pipe material comprises the following components and parts by weight thereof:
100 parts of PVC resin, 20 parts of calcium carbonate, 10 parts of talcum powder, 8 parts of calcium-zinc stabilizer, 2 parts of lubricant, 5 parts of titanium dioxide, 1 part of monoalkoxy titanate coupling agent, 1 part of N-phenyl maleimide and 1 part of dicumyl peroxide.
Preferably, the monoalkoxytitanate coupling agent is a fatty acid monoalkoxytitanate coupling agent.
Further, the lubricant is selected from one or two of polyethylene wax and liquid paraffin.
Still further, the calcium carbonate is ground calcium carbonate.
Further, the titanium dioxide is rutile type titanium dioxide or anatase type titanium dioxide.
In addition, the invention also provides a preparation method of the high impact PVC pipe material, which comprises the following steps:
adding a mono-alkoxy titanate coupling agent into liquid paraffin to prepare a solution, adding talcum powder, calcium carbonate, N-phenyl maleimide and dicumyl peroxide into the solution, uniformly stirring, drying, adding other components, carrying out high-speed hot mixing until the temperature is 130-150 ℃, cooling, discharging, extruding and granulating to obtain the nano-composite material.
Further, the cooling temperature is 40-45 ℃.
In addition, the invention also provides application of the high impact PVC pipe material in preparation of water supply and drainage pipes.
In addition, the invention also provides a high impact PVC pipe which is prepared from the high impact PVC pipe material.
The invention has the following beneficial effects:
the high-impact-resistance PVC pipe material is mainly prepared by mixing talcum powder, calcium carbonate, a monoalkoxy titanate coupling agent, N-phenylmaleimide, dicumyl peroxide and other auxiliary materials, the added N-phenylmaleimide can avoid hydrolysis of the monoalkoxy titanate coupling agent, the dicumyl peroxide can enhance the connection of the N-phenylmaleimide and PVC resin, the stability of the PVC resin is improved, and the components act together to achieve the effect of remarkably improving mechanical properties such as impact resistance, tensile strength and the like of the material.
Detailed Description
The present invention is further illustrated by the following specific examples, which are not intended to limit the invention in any way. Reagents, methods and apparatus used in the present invention are conventional in the art unless otherwise indicated.
Unless otherwise indicated, reagents and materials used in the following examples are commercially available.
Example 1A high impact PVC pipe
The high impact PVC pipe is prepared from the following materials in parts by weight:
100 parts of PVC resin, 20 parts of heavy calcium carbonate, 10 parts of nano talcum powder, 1 part of liquid paraffin, 1 part of PE wax, 5 parts of titanium dioxide, 8 parts of calcium-zinc stabilizer, 1 part of fatty acid monoalkoxy titanate coupling agent, 1 part of N-phenyl maleimide and 1 part of dicumyl peroxide.
The preparation method comprises the following steps:
adding fatty acid monoalkoxy titanate coupling agent into liquid paraffin to prepare solution, adding talcum powder, calcium carbonate, N-phenyl maleimide and dicumyl peroxide, stirring in a stirrer for 50min to fully and uniformly coat the filler with the treating agent, and heating and drying; adding other components, performing high-speed hot mixing treatment by using a hot mixer until the temperature is 145 ℃, then transferring to a low-speed mixer (cold mixer) for cooling, performing cold mixing until the temperature is 45 ℃, discharging, granulating in an extruder, and finally performing extrusion molding to obtain the product.
Example 2A high impact PVC pipe
The high impact PVC pipe is prepared from the following materials in parts by weight:
100 parts of PVC resin, 20 parts of heavy calcium carbonate, 10 parts of nano talcum powder, 1 part of liquid paraffin, 1 part of PE wax, 5 parts of titanium dioxide, 8 parts of calcium-zinc stabilizer, 2 parts of fatty acid monoalkoxy titanate coupling agent, 1 part of N-phenyl maleimide and 1 part of dicumyl peroxide.
The preparation method comprises the following steps:
adding fatty acid monoalkoxy titanate coupling agent into liquid paraffin to prepare solution, adding talcum powder, calcium carbonate, N-phenyl maleimide and dicumyl peroxide, stirring in a stirrer for 40min to fully and uniformly coat the filler with the treating agent, and heating and drying; adding other components, performing high-speed hot mixing treatment by using a hot mixer until the temperature is 130 ℃, then transferring to a low-speed mixer (cold mixer) for cooling, performing cold mixing until the temperature is 40 ℃, discharging, granulating in an extruder, and finally performing extrusion molding to obtain the product.
Example 3A high impact PVC pipe
The high impact PVC pipe is prepared from the following materials in parts by weight:
100 parts of PVC resin, 20 parts of heavy calcium carbonate, 10 parts of nano talcum powder, 1 part of liquid paraffin, 1 part of PE wax, 5 parts of titanium dioxide, 8 parts of calcium-zinc stabilizer, 2 parts of fatty acid monoalkoxy titanate coupling agent, 2 parts of N-phenyl maleimide and 1 part of dicumyl peroxide.
The preparation method comprises the following steps:
adding fatty acid monoalkoxy titanate coupling agent into liquid paraffin to prepare solution, adding talcum powder, calcium carbonate, N-phenyl maleimide and dicumyl peroxide, stirring in a stirrer for 60min to fully and uniformly coat the filler with the treating agent, and heating and drying; adding other components, performing high-speed hot mixing treatment by using a hot mixer until the temperature is 150 ℃, then transferring to a low-speed mixer (cold mixer) for cooling, performing cold mixing until the temperature is 45 ℃, discharging, granulating in an extruder, and finally performing extrusion molding to obtain the product.
Example 4A high impact PVC pipe
The high impact PVC pipe is prepared from the following materials in parts by weight:
100 parts of PVC resin, 20 parts of heavy calcium carbonate, 5 parts of nano talcum powder, 1 part of liquid paraffin, 1 part of PE wax, 5 parts of titanium dioxide, 8 parts of calcium-zinc stabilizer, 5 parts of fatty acid monoalkoxy titanate coupling agent, 5 parts of N-phenyl maleimide and 1 part of dicumyl peroxide.
The preparation method comprises the following steps:
adding fatty acid monoalkoxy titanate coupling agent into liquid paraffin to prepare solution, adding talcum powder, calcium carbonate, N-phenyl maleimide and dicumyl peroxide, stirring in a stirrer for 55min to fully and uniformly coat the filler with the treating agent, and heating and drying; adding other components, performing high-speed hot mixing treatment by using a hot mixer until the temperature is 140 ℃, then transferring to a low-speed mixer (cold mixer) for cooling, performing cold mixing until the temperature is 43 ℃, discharging, granulating in an extruder, and finally performing extrusion molding to obtain the product.
Comparative example 1 a PVC pipe
Comparative example 1 is different from example 1 in that comparative example 1 does not add N-phenylmaleimide and dicumyl peroxide, and the other parameters and operations are the same as those of example 1.
Comparative example 2 PVC pipe
Comparative example 2 differs from example 1 in that comparative example 2 does not add N-phenylmaleimide, and the parameters and operation are otherwise as in reference example 1.
Comparative example 3 a PVC pipe
Comparative example 3 differs from example 1 in that comparative example 3 does not add dicumyl peroxide and the remaining parameters and operation refer to example 1.
Test examples PVC pipe Property measurement
The tensile strength, elongation at break, impact strength and longitudinal shrinkage of the PVC pipes prepared in the examples and the comparative examples are measured by referring to the national standard GB/T8804 determination of tensile property of thermoplastic pipes, GB/T1843 determination of Izod impact strength of plastics and GB/T6671 determination of shrinkage of thermoplastic pipes, and the results are shown in Table 1.
TABLE 1PVC pipes Performance test results
| Group of | Tensile Strength (MPa) | Elongation at Break (%) | Impact Strength (KJ/m)2) | Longitudinal shrinkage (%) |
| Example 1 | 42.8 | 142 | 21.2 | 3.5 |
| Example 2 | 42.0 | 133 | 22.8 | 3.1 |
| Example 3 | 41.3 | 113 | 21.8 | 3.2 |
| Example 4 | 41.2 | 103 | 20.2 | 3.2 |
| Comparative example 1 | 39.8 | 96 | 16.8 | 4.3 |
| Comparative example 2 | 41.2 | 119 | 20.3 | 3.9 |
| Comparative example 3 | 41.5 | 99 | 18.2 | 4.0 |
As can be seen from Table 1, the PVC pipes prepared in the embodiments 1-4 of the invention have good tensile strength, elongation at break, impact strength, longitudinal retraction rate and excellent mechanical properties; in comparative examples 1 to 3, the tensile strength, the elongation at break and the impact strength were reduced to different degrees after the components were changed.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. The high impact PVC pipe material is characterized by comprising the following components in parts by weight:
100 parts of PVC resin, 10-20 parts of calcium carbonate, 1-10 parts of talcum powder, 1-8 parts of calcium-zinc stabilizer, 2-4 parts of lubricant, 0-5 parts of titanium dioxide, 1-5 parts of monoalkoxy titanate coupling agent, 1-5 parts of N-phenyl maleimide and 1-2 parts of dicumyl peroxide.
2. The high impact PVC pipe material of claim 1, wherein the high impact PVC pipe material comprises the following components and parts by weight thereof:
100 parts of PVC resin, 15-20 parts of calcium carbonate, 5-10 parts of talcum powder, 5-8 parts of calcium-zinc stabilizer, 2-3 parts of lubricant, 2-5 parts of titanium dioxide, 1-3 parts of monoalkoxy titanate coupling agent, 1-3 parts of N-phenyl maleimide and 1-2 parts of dicumyl peroxide.
3. The high impact PVC pipe material according to claim 2, wherein the high impact PVC pipe material comprises the following components and parts by weight thereof:
100 parts of PVC resin, 20 parts of calcium carbonate, 10 parts of talcum powder, 8 parts of calcium-zinc stabilizer, 2 parts of lubricant, 5 parts of titanium dioxide, 1 part of monoalkoxy titanate coupling agent, 1 part of N-phenyl maleimide and 1 part of dicumyl peroxide.
4. The high impact PVC pipe material according to any one of claims 1 to 3, wherein the monoalkoxytitanate coupling agent is a fatty acid monoalkoxytitanate coupling agent.
5. The high impact PVC pipe material according to any one of claims 1 to 3, wherein the lubricant is selected from one or two of polyethylene wax and liquid paraffin.
6. The high impact PVC pipe material according to any one of claims 1 to 3, wherein the calcium carbonate is ground calcium carbonate.
7. A method for preparing a high impact PVC pipe material according to any of claims 1 to 6, characterized by comprising the following steps:
adding a mono-alkoxy titanate coupling agent into liquid paraffin to prepare a solution, adding talcum powder, calcium carbonate, N-phenyl maleimide and dicumyl peroxide into the solution, uniformly stirring, drying, adding other components, carrying out high-speed hot mixing until the temperature is 130-150 ℃, cooling, discharging, extruding and granulating to obtain the nano-composite material.
8. The method according to claim 7, wherein the cooling temperature is 40 to 45 ℃.
9. Use of the high impact PVC pipe material according to any one of claims 1 to 6 in the preparation of water supply and drainage pipes.
10. A high impact PVC pipe characterized by being made of the high impact PVC pipe material according to any one of claims 1 to 6.
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Cited By (2)
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| CN114957878A (en) * | 2022-03-26 | 2022-08-30 | 河南瑞腾塑胶集团有限公司 | High-impact-resistance PVC (polyvinyl chloride) pipe and preparation method thereof |
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