CN112210175A - Low-temperature impact resistant PVC product and preparation method and application thereof - Google Patents
Low-temperature impact resistant PVC product and preparation method and application thereof Download PDFInfo
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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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- 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
- F16L9/12—Rigid pipes of plastics with or without reinforcement
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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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- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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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
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
Abstract
The invention discloses a low-temperature impact resistant PVC product and a preparation method and application thereof, wherein a toughening modifier, a compatilizer and a reinforcing filler are subjected to graft modification, so that the compatibility among components is improved, the synergistic effect of the components is fully exerted, the low-temperature impact resistant PVC product is prepared together with a heat stabilizer, an antioxidant, a plasticizer and the like in a certain ratio, the low-temperature impact resistance of the PVC product is improved by utilizing the interaction between the components and PVC, and the low-temperature impact resistant PVC product also has better tensile strength, bending strength and normal-temperature impact resistance, and can be widely applied to the field of drainage and/or water supply.
Description
Technical Field
The invention relates to the technical field of PVC products, in particular to a low-temperature impact resistant PVC product and a preparation method and application thereof.
Background
Polyvinyl chloride (PVC) products have the advantages of strong corrosion resistance, good flame retardant property, high mechanical strength, good temperature adaptability, good water tightness and the like, and are widely used in the fields of drainage/water supply and the like. However, the biggest defect of the PVC product is that the performance of the PVC product is poor in a low-temperature environment, the impact resistance of the product is seriously reduced along with the reduction of the temperature (reduced to-15 ℃), the product is easy to crack, and the use requirement in winter is difficult to meet. Therefore, improving the low temperature impact properties of PVC articles is one of the important studies in this field.
Chinese patent CN106008757A (application publication No. 2016.10.12) discloses a polyvinyl chloride low-temperature toughening modifier and a polyvinyl chloride mixture containing the toughening modifier, wherein chlorinated polyethylene is grafted and modified by (meth) acrylates to prepare the low-temperature toughening modifier, and then the low-temperature toughening modifier, polyvinyl chloride resin and other additives are used together to prepare a PVC product, so as to improve the low-temperature impact property of the PVC product, but the compatibility of the low-temperature toughening modifier and the polyvinyl chloride resin is not good, and the low-temperature impact property of the PVC product is still not ideal.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defect and the defect of non-ideal low-temperature impact performance of the existing PVC product, and provides a low-temperature impact resistant PVC product with better low-temperature impact resistance.
The invention also aims to provide a preparation method of the low-temperature impact resistant PVC product.
Another purpose of the invention is to provide an application of the low-temperature impact resistant PVC product.
The above purpose of the invention is realized by the following technical scheme:
a low-temperature impact resistant PVC product comprises the following components in parts by mass:
100 parts of PVC resin;
5-10 parts of a toughening modifier;
0.5-5 parts of a heat stabilizer;
0.3-1.5 parts of antioxidant;
5-15 parts of a plasticizer;
6-12 parts of a compatilizer;
0.5-3 parts of a lubricant;
5-20 parts of a reinforcing filler;
3-6 parts of a processing aid;
the toughening modifier is a polyolefin elastomer grafted with phthalate; the compatilizer is polyvinyl chloride grafted with phthalate ester; the reinforcing filler is an aluminate modified reinforcing filler.
According to the invention, the phthalate grafted polyolefin elastomer (POE) is used as a toughening modifier, so that on one hand, the compatibility of the POE grafted phthalate and PVC is obviously improved, thereby ensuring the toughening effect of the POE on PVC; on the other hand, the modified toughening modifier can also be used as a compatibilizer, so that the compatibility of PVC and a plasticizer is improved, the function of the plasticizer in a system is effectively exerted, and the low-temperature impact resistance of a PVC product is improved; the invention further adopts the polyvinyl chloride grafted with phthalate as a compatilizer, and utilizes the compatibility of the polyvinyl chloride grafted with phthalate and the side chain of the toughening modifier to further improve the compatibility of POE and PVC and ensure that the low-temperature impact resistance of a PVC system is obviously improved; in addition, the invention also modifies the reinforcing filler to obtain the aluminate modified reinforcing filler, thereby improving the compatibility of the reinforcing filler and PVC, improving the dispersibility of the reinforcing filler in PVC and obviously improving the toughening effect of the reinforcing filler on PVC.
Preferably, the composition is prepared from the following components in parts by mass:
7-8 parts of a toughening modifier;
2-3 parts of a heat stabilizer;
1-1.5 parts of an antioxidant;
10-12 parts of a plasticizer;
9-10 parts of a compatilizer;
0.5-1.5 parts of a lubricant;
15 parts of reinforcing filler;
4-5 parts of a processing aid.
Preferably, the phthalate-grafted polyolefin elastomer is a diallyl phthalate-grafted polyolefin elastomer (POE-g-DAP).
More preferably, the preparation method of the POE-g-DAP comprises the following steps:
uniformly mixing 100 parts of polyolefin elastomer (POE), 5-10 parts of diallyl phthalate (DAP), 1-3 Parts of Polypropylene (PP), 0.1-0.5 part of dicumyl peroxide (DCP) and 0.2 part of antioxidant, and extruding and granulating to obtain POE-g-DAP.
Preferably, the POE is one or more of Dow EngagagetM 8100, 8150 and 8450.
Preferably, the compatibilizer is diallyl phthalate grafted polyvinyl chloride (PVC-g-DAP).
Preferably, the preparation method of the PVC-g-DAP comprises the following steps:
100 parts of Polyolefin (PVC), 6-12 parts of diallyl phthalate (DAP), 3 parts of calcium-zinc stabilizer, 7 parts of MgO and 0.2-0.4 part of peroxide dicumyl peroxide (DCP) are uniformly mixed, and the mixture is extruded and granulated to obtain PVC-g-DAP.
Preferably, the reinforcing filler is aluminate modified superfine light calcium carbonate.
More preferably, the amount of the aluminate ester in the aluminate modified superfine light calcium carbonate is 1 to 1.5 percent of the calcium carbonate.
Preferably, the aluminate is aluminate DL 411.
Preferably, the plasticizer is one or more of dioctyl sebacate, diisononyl adipate and dioctyl adipate.
Preferably, the thermal stabilizer is a calcium zinc stabilizer.
Preferably, the processing aid is an alpha-methylstyrene oligomer.
Preferably, the lubricant is one or more of polyethylene wax, calcium stearate and oxidized polyethylene wax.
Preferably, 3-8 parts of color masterbatch is further included.
Preferably, the color masterbatch further comprises 5-6 parts of color masterbatch.
Preferably, the color masterbatch is color masterbatch containing one or more of titanium dioxide, carbon black and colorant.
Preferably, the antioxidant is antioxidant 1010 and/or antioxidant 264.
The preparation method for protecting the low-temperature impact resistant PVC product comprises the following steps:
mixing PVC resin, a heat stabilizer, an antioxidant, a plasticizer, a processing aid, a toughening modifier, a compatilizer, a lubricant and a reinforcing filler at 100-120 ℃ for 5-10 min, cooling, and performing extrusion molding to obtain the low-temperature impact resistant PVC product.
The invention also protects the application of the low-temperature impact resistant PVC product in the field of drainage and/or water supply.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the grafted and modified toughening modifier, the compatilizer and the reinforcing filler are used for preparing the low-temperature impact resistant PVC product according to a specific ratio, the compatibility among the components is improved, the synergistic effect is fully exerted, the low-temperature impact resistance of the PVC product is improved by utilizing the interaction between the components and PVC, and the PVC product also has better tensile strength, bending strength and normal-temperature impact resistance.
Drawings
FIG. 1 is a scanning electron micrograph of the low temperature impact resistant PVC article obtained in example 1.
FIG. 2 is a scanning electron micrograph of the low temperature impact resistant PVC article obtained in example 2.
Detailed Description
The present invention will be further described with reference to specific embodiments, but the present invention is not limited to the examples in any way. The starting reagents employed in the examples of the present invention are, unless otherwise specified, those that are conventionally purchased.
Example 1
A low-temperature impact resistant PVC product comprises the following components in parts by mass:
100 parts of PVC resin;
0.5 part of calcium-zinc heat stabilizer;
10100.3 parts of an antioxidant;
15 parts of dioctyl sebacate DOS;
3 parts of alpha-methyl styrene oligomer;
5 parts of toughening modifier POE-g-DAP;
6 parts of compatilizer PVC-g-DAP;
3 parts of lubricant polyethylene wax;
3 parts of titanium dioxide-containing color master batch;
20 parts of aluminate DL411 modified superfine light calcium carbonate; DL411 accounts for 1% of calcium carbonate.
The preparation method of the low-temperature impact resistant PVC product comprises the following steps:
s1, uniformly mixing 100 parts of polyolefin POE, 5 parts of diallyl phthalate DAP, 1 part of polypropylene PP, 0.1 part of peroxide DCP and 0.2 part of antioxidant 1010, and extruding and granulating by using a double-screw extruder to obtain POE-g-DAP, wherein the POE is Tao Engagne 8100;
s2, uniformly mixing 100 parts of polyolefin PVC, 6 parts of diallyl phthalate DAP, 3 parts of calcium-zinc stabilizer, 7 parts of MgO and 0.2 part of peroxide dicumyl DCP, and extruding and granulating by using a double-screw extruder to obtain PVC-g-DAP;
s3, mixing 100 parts of PVC resin, 0.5 part of calcium-zinc heat stabilizer, 10100.3 parts of antioxidant, 15 parts of plasticizer dioctyl sebacate DOS, 3 parts of processing aid alpha-methyl styrene oligomer, 5 parts of toughening modifier, 6 parts of compatilizer, 3 parts of lubricant polyethylene wax, 3 parts of titanium dioxide-containing color master batch and 20 parts of modified reinforcing filler at 100 ℃ for 10min, cooling, and adding the mixture into a double-screw extruder for extrusion molding to obtain the low-temperature impact resistant PVC product.
Example 2
A low-temperature impact resistant PVC product comprises the following components in parts by mass:
100 parts of PVC resin, 2 parts of calcium-zinc heat stabilizer, 2640.5 parts of antioxidant, 10 parts of plasticizer dioctyl adipate DOA, 5 parts of processing aid alpha-methyl styrene oligomer, 5 parts of toughening modifier POE-g-DAP7 parts, 9 parts of compatilizer PVC-g-DAP, 1.5 parts of lubricant calcium stearate, 5 parts of carbon black color master batch, 15 parts of aluminate DL411 modified superfine light calcium carbonate, wherein the using amount of DL411 is 1.5 percent of calcium carbonate.
The preparation method of the low-temperature impact resistant PVC product comprises the following steps:
s1, uniformly mixing 100 parts of polyolefin POE, 7 parts of diallyl phthalate DAP, 2 parts of polypropylene PP, 0.3 part of peroxide DCP and 0.2 part of antioxidant 1010, and extruding and granulating by using a double-screw extruder to obtain POE-g-DAP, wherein the POE is Tao Engagne 8150;
s2, uniformly mixing 100 parts of polyolefin PVC, 9 parts of diallyl phthalate DAP, 3 parts of calcium-zinc stabilizer, 7 parts of MgO and 0.3 part of peroxide dicumyl DCP, and extruding and granulating by using a double-screw extruder to obtain PVC-g-DAP;
s3, mixing 100 parts of PVC resin, 2 parts of calcium-zinc heat stabilizer, 10100.5 parts of antioxidant, 10 parts of plasticizer dioctyl adipate DOA, 5 parts of processing aid alpha-methyl styrene oligomer, 7 parts of toughening modifier, 9 parts of compatilizer, 1.5 parts of lubricant calcium stearate, 5 parts of carbon black color master batch and 15 parts of modified reinforcing filler at 110 ℃ for 8min, cooling, adding into a double-screw extruder, and carrying out extrusion molding to obtain the low-temperature impact resistant PVC product.
Example 3
A low-temperature impact resistant PVC product comprises the following components in parts by mass:
100 parts of PVC resin, 4 parts of dibutyltin dilaurate, 10101 parts of antioxidant, 5 parts of diisononyl adipate DINA serving as plasticizer, 6 parts of processing aid alpha-methyl styrene oligomer, 6 parts of toughening modifier POE-g-DAP10 parts, 12 parts of compatilizer PVC-g-DAP, 1.5 parts of lubricant calcium stearate, 1.5 parts of lubricant oxidized polyethylene wax, 3 parts of titanium dioxide color master batch, 5 parts of aluminate DL411 modified superfine light calcium carbonate, and the using amount of DL411 is 1.5% of calcium carbonate.
The preparation method of the low-temperature impact resistant PVC product comprises the following steps:
s1, uniformly mixing 100 parts of polyolefin POE, 10 parts of diallyl phthalate DAP, 3 parts of polypropylene PP, 0.5 part of peroxide DCP and 0.2 part of antioxidant 1010, and extruding and granulating by using a double-screw extruder to obtain POE-g-DAP, wherein the POE is Dow Engagne 8450;
s2, uniformly mixing 100 parts of polyolefin PVC, 12 parts of diallyl phthalate DAP, 3 parts of calcium-zinc stabilizer, 7 parts of MgO and 0.4 part of peroxide dicumyl DCP, and extruding and granulating by using a double-screw extruder to obtain PVC-g-DAP;
s3, mixing 100 parts of PVC resin, 4 parts of calcium-zinc heat stabilizer, 10101 parts of antioxidant, 5 parts of plasticizer diisononyl adipate DINA, 6 parts of processing aid alpha-methyl styrene oligomer, 10 parts of toughening modifier, 12 parts of compatilizer, 1.5 parts of lubricant calcium stearate, 1.5 parts of lubricant oxidized polyethylene wax, 3 parts of titanium dioxide color master batch and 5 parts of modified reinforcing filler at 120 ℃ for 5min, cooling, adding into a double-screw extruder, and carrying out extrusion molding to obtain the low-temperature impact resistant PVC product.
Example 4
A low-temperature impact resistant PVC product comprises the following components in parts by mass:
100 parts of PVC resin, 3 parts of calcium-zinc heat stabilizer, 10101.5 parts of antioxidant, 12 parts of plasticizer diisononyl adipate DINA, 4 parts of processing aid alpha-methyl styrene oligomer, 8 parts of toughening modifier POE-g-DAP, 10 parts of compatilizer PVC-g-DAP, 0.2 part of polyethylene wax lubricant, 0.3 part of oxidized polyethylene wax lubricant, 6 parts of titanium dioxide color master batch, 15 parts of aluminate DL411 modified superfine light calcium carbonate, and the using amount of DL411 is 1.5% of calcium carbonate.
The preparation method of the low-temperature impact resistant PVC product comprises the following steps:
s1, uniformly mixing 100 parts of polyolefin POE, 8 parts of diallyl phthalate DAP, 2 parts of polypropylene PP, 0.2 part of peroxide dicumyl DCP and 0.2 part of antioxidant 1010, and extruding and granulating by using a double-screw extruder to obtain POE-g-DAP, wherein the POE is Dow EngageTM 8450；
S2, uniformly mixing 100 parts of polyolefin PVC, 10 parts of diallyl phthalate DAP, 3 parts of calcium-zinc stabilizer, 7 parts of MgO and 0.35 part of peroxide dicumyl DCP, and extruding and granulating by using a double-screw extruder to obtain PVC-g-DAP;
s3, mixing 100 parts of PVC resin, 3 parts of calcium-zinc heat stabilizer, 10101.5 parts of antioxidant, 12 parts of plasticizer diisononyl adipate DINA, 5 parts of processing aid alpha-methyl styrene oligomer, 8 parts of toughening modifier, 10 parts of compatilizer, 0.2 part of polyethylene wax lubricant, 0.3 part of oxidized polyethylene wax lubricant, 6 parts of titanium dioxide color master batch and 15 parts of modified reinforcing filler at 110 ℃ for 8min, cooling, adding into a double-screw extruder, and carrying out extrusion molding to obtain the low-temperature impact resistant PVC product.
Comparative example 1
The components and preparation method of this comparative example are the same as example 1, except that the POE-g-DAP is replaced with a mixture of unmodified 100 parts POE, 5 parts DAP, 1 part PP, 0.2 part antioxidant 1010, and the mixture is directly mixed with other components to prepare a PVC product.
Comparative example 2
The composition and preparation method of this comparative example are the same as example 1 except that PVC-g-DAP is replaced with a mixture of unmodified 100 parts PVC, 6 parts DAP, 7 parts MgO, 0.2 parts calcium zinc stabilizer, and directly mixed with the other components to prepare a PVC article.
Comparative example 3
The composition and preparation method of this comparative example were the same as those of example 1 except that the ultrafine precipitated calcium carbonate modified with aluminate DL411 was replaced with the ultrafine precipitated calcium carbonate to prepare a PVC product.
Comparative example 4
In the comparative example, 100 parts of PVC resin, 3 parts of calcium-zinc heat stabilizer, 5 parts of processing aid alpha-methyl styrene oligomer, 0.5 part of polyethylene wax lubricant, 3 parts of chlorinated polyethylene CPE, 6 parts of titanium dioxide color master batch and 5 parts of superfine light calcium carbonate are mixed for 8min at 110 ℃, cooled and added into a double-screw extruder for extrusion molding to prepare the PVC product. Chlorinated polyethylene is used as a low-temperature toughening modifier.
Performance testing
Preparing the mixture into a standard sample by using an injection molding machine, and testing the tensile strength, the bending strength and the impact strength; the pipes extruded by the extruder were subjected to hydraulic testing.
1. Test method
(1) Tensile strength:
tensile testing was performed on dumbbell-type 50X 10X 4mm standard bars according to GB/T1040.2-2006. The instrument adopts a microcomputer control electronic universal tester (CMT4252, New Sansi materials detection Co., Ltd. Shenzhen), and the sample strip is stretched at the speed of 50mm/min under the room temperature condition.
(2) Bending strength:
standard specimens of dimensions 80X 10X 4mm were subjected to a bending test at room temperature at a rate of 10mm/min using a SANS CMT4254 tensile tester in accordance with GB/T9431-2000.
(3) Impact strength:
according to GB/T1843-2008, a standard sample with the size of 80X 10X 4mm is subjected to impact test at room temperature and low temperature (-25 ℃) by utilizing a ZBC1400-2 type cantilever pendulum bob impact tester of Shenzhen Masi.
(4) Hydraulic testing of the pipe:
the hydraulic test was carried out according to the standard "CJ/T272-2008" impact-resistant modified polyvinyl chloride pipes and fittings for water supply ".
2. Test results
TABLE 1 results of performance testing of PVC articles prepared in examples and comparative examples
As can be seen from Table 1, the PVC products prepared according to the embodiments 1-4 of the present invention have good tensile strength, compressive strength, normal temperature and low temperature impact strength, good low temperature (-25 ℃) impact resistance, and good hydraulic resistance. On the contrary, the comparative example 1 directly adds the diallyl phthalate additive in the technical scheme into the PVC mixed system, and because no good graft is formed with the POE serving as the toughening agent, the compatibility of the POE in the system is reduced, so that the mechanical property is reduced, and particularly the tensile strength is obviously reduced.
FIGS. 1 and 2 are SEM images of cross sections of standard samples of examples 1 and 2, respectively, from which it can be seen that no significant phase separation occurs in the polymer cross section, indicating that the toughening modifier added has good compatibility with the matrix PVC; and calcium carbonate particles are uniformly dispersed on the cross section of the polymer, so that the good performance of the PVC product is ensured.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The low-temperature impact resistant PVC product is characterized by comprising the following components in parts by mass:
100 parts of PVC resin;
5-10 parts of a toughening modifier;
0.5-5 parts of a heat stabilizer;
0.3-1.5 parts of antioxidant;
5-15 parts of a plasticizer;
6-12 parts of a compatilizer;
0.5-3 parts of a lubricant;
5-20 parts of a reinforcing filler;
3-6 parts of a processing aid;
the toughening modifier is a polyolefin elastomer grafted with phthalate; the compatilizer is polyvinyl chloride grafted with phthalate ester; the reinforcing filler is an aluminate modified reinforcing filler.
2. The low temperature impact resistant PVC product of claim 1, which is prepared from the following components in parts by mass:
100 parts of PVC resin;
7-8 parts of a toughening modifier;
2-3 parts of a heat stabilizer;
1-1.5 parts of an antioxidant;
10-12 parts of a plasticizer;
9-10 parts of a compatilizer;
0.5-1.5 parts of a lubricant;
15 parts of reinforcing filler;
4-5 parts of a processing aid.
3. The low temperature impact resistant PVC article of claim 1 or 2, wherein the toughening modifier is a diallyl phthalate grafted polyolefin elastomer.
4. The low temperature impact resistant PVC article of claim 1, wherein the compatibilizer is poly (vinyl chloride) grafted with diallyl phthalate.
5. The low temperature impact resistant PVC article of claim 1, wherein the reinforcing filler is an aluminate modified ultrafine light calcium carbonate.
6. The low temperature impact resistant PVC article of claim 1 wherein the plasticizer is one or more of dioctyl sebacate, diisononyl adipate, dioctyl adipate.
7. The low temperature impact resistant PVC article of claim 1 wherein the thermal stabilizer is a calcium zinc stabilizer and/or dibutyltin dilaurate.
8. The low temperature impact resistant PVC article of claim 1, wherein the processing aid is an alpha-methylstyrene oligomer and/or an ACR resin.
9. The method for preparing the low temperature impact resistant PVC product of any one of claims 1 to 8, characterized by comprising the following steps:
mixing PVC resin, a heat stabilizer, an antioxidant, a plasticizer, a processing aid, a toughening modifier, a compatilizer, a lubricant and a reinforcing filler at 100-120 ℃ for 5-10 min, cooling, and performing extrusion molding to obtain the low-temperature impact resistant PVC product.
10. Use of a low temperature impact resistant PVC article according to any of claims 1 to 8 in the field of drainage and/or water supply.
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