CN115612224B - Polyvinyl chloride composite material and preparation method thereof - Google Patents
Polyvinyl chloride composite material and preparation method thereof Download PDFInfo
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- CN115612224B CN115612224B CN202110785158.4A CN202110785158A CN115612224B CN 115612224 B CN115612224 B CN 115612224B CN 202110785158 A CN202110785158 A CN 202110785158A CN 115612224 B CN115612224 B CN 115612224B
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- 239000004800 polyvinyl chloride Substances 0.000 title claims abstract description 88
- 229920000915 polyvinyl chloride Polymers 0.000 title claims abstract description 87
- 239000002131 composite material Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title abstract description 5
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 38
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 38
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 239000006229 carbon black Substances 0.000 claims abstract description 22
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 18
- AKNMPWVTPUHKCG-UHFFFAOYSA-N 2-cyclohexyl-6-[(3-cyclohexyl-2-hydroxy-5-methylphenyl)methyl]-4-methylphenol Chemical group OC=1C(C2CCCCC2)=CC(C)=CC=1CC(C=1O)=CC(C)=CC=1C1CCCCC1 AKNMPWVTPUHKCG-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000001125 extrusion Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 14
- 230000032683 aging Effects 0.000 description 10
- 238000012360 testing method Methods 0.000 description 8
- 230000003068 static effect Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 230000005611 electricity Effects 0.000 description 6
- 230000014759 maintenance of location Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000010292 electrical insulation Methods 0.000 description 3
- 238000010556 emulsion polymerization method Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004287 Dehydroacetic acid Substances 0.000 description 1
- 229920003317 Fusabond® Polymers 0.000 description 1
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
Classifications
-
- 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
- C08L2201/00—Properties
- C08L2201/04—Antistatic
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
Abstract
The invention discloses a polyvinyl chloride composite material and a preparation method thereof, wherein the polyvinyl chloride composite material is prepared from 100-200 parts of polyvinyl chloride, 50-100 parts of high-density polyethylene, 10-30 parts of maleic anhydride grafted high-density polyethylene, 5-15 parts of a first weather-proof agent and 0.5-1 part of a second weather-proof agent according to parts by weight, wherein the first weather-proof agent is carbon black, and the second weather-proof agent is an antioxidant ZKF. The polyvinyl chloride composite material has excellent weather resistance, can still maintain excellent mechanical properties under high-temperature conditions for a long time, and has excellent antistatic properties and excellent comprehensive properties.
Description
Technical Field
The invention belongs to the technical field of polymer material compounding, and particularly relates to a polyvinyl chloride composite material and a preparation method thereof.
Background
Polyvinyl chloride (PVC) is one of the earliest resins industrialized worldwide, the second largest resin species in the world now being the next to PE, accounting for 29% of all resins used. PVC has good physical and chemical properties and excellent chemical stability, flame retardancy and electrical insulation properties, and thus is widely used in the fields of industry, construction, agriculture, daily life, packaging, electricity, utilities, etc.
However, polyvinyl chloride has strong electrical insulation and high volume resistivity. Because of the excellent electrical insulation, PVC articles accumulate static charge during manufacture and use, causing hazards and accidents. Therefore, it is necessary to eliminate static electricity of PVC and reduce resistivity. The current method for eliminating PVC static electricity is mainly realized by adding antistatic agents, which has become a mainstream mode.
In addition, the weatherability of polyvinyl chloride is one of its properties that need to be improved. Weather resistance refers to a series of aging phenomena of fading, color change, cracking, chalking, strength reduction and the like of materials caused by the influence of external conditions such as sunlight irradiation, temperature change, wind, rain and the like, and is common to the aging phenomena of the materials caused by the influence of light or temperature,
disclosure of Invention
In view of the foregoing, it is desirable to provide a polyvinyl chloride composite material and a method for producing the same, which has excellent weather resistance, can maintain excellent mechanical properties even under high temperature conditions for a long period of time, and has excellent antistatic properties and processability, and excellent overall properties.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention provides a polyvinyl chloride composite material which is prepared from 100-200 parts of polyvinyl chloride, 50-100 parts of high-density polyethylene, 10-30 parts of maleic anhydride grafted high-density polyethylene, 5-15 parts of a first weather-resistant agent and 0.5-1 part of a second weather-resistant agent according to parts by weight, wherein the first weather-resistant agent is carbon black, and the second weather-resistant agent is an antioxidant ZKF.
According to the invention, carbon black is added into a polyvinyl chloride formula system as a first weather resistant agent, and on one hand, the carbon black is matched with an antioxidant ZKF as a second weather resistant agent to improve the weather resistance of a polyvinyl chloride composite material; on the other hand, the carbon black can reduce the resistivity of the polyvinyl chloride composition, eliminate the static electricity of the polyvinyl chloride composition and improve the antistatic capability of the polyvinyl chloride composition. In addition, a proper amount of high-density polyvinyl chloride is added into the polyvinyl chloride formula system, so that on one hand, the viscosity of the polyvinyl chloride during melting is regulated, the processing performance is improved, the problems of broken strips, die head blockage, vacuum port material discharge and the like in the processing process are avoided, and on the other hand, the second weather-proof agent can be more uniformly dispersed in the polyvinyl chloride, so that the mechanical property, the antistatic capability and the weather resistance of the polyvinyl chloride composite material are further improved.
Further, the polyvinyl chloride in the invention is not particularly limited, any conventional polyvinyl chloride in the art can be adopted, and the synthesis method of the polyvinyl chloride mainly comprises a suspension emulsion polymerization method, an emulsion polymerization method and a bulk polymerization method, and the suspension emulsion polymerization method is adopted relatively often, and the obtained polyvinyl chloride has good performance and less impurities, so in one or more embodiments of the invention, the polyvinyl chloride is produced by adopting the suspension emulsion method, and the polymerization degree of the polyvinyl chloride is 650-1000.
Further, the addition of the high-density polyethylene according to the present invention is mainly used for adjusting the viscosity of polyvinyl chloride when it is melted, and at the same time, improving the dispersibility of carbon black in polyvinyl chloride, and the selection thereof is not particularly limited, and in one or more embodiments of the present invention, the high-density polyethylene has a melt mass flow rate of 30 to 80g/10min at 230 ℃ under 2.16kg conditions.
Further, the interface binding force among polyvinyl chloride, high-density polyethylene and carbon black can be increased by adding maleic anhydride grafted high-density polyethylene into the system, and the interface binding force can be selected conventionally in the field, and in one or more embodiments of the invention, the grafting rate of the maleic anhydride grafted high-density polyethylene is 5-15%.
Further, in one or more embodiments of the present invention, carbon black is used as the first weather-resistant agent, which is matched with the second weather-resistant agent to improve weather resistance of the polyvinyl chloride on one hand, and is used for eliminating static electricity of the polyvinyl chloride to improve antistatic ability of the polyvinyl chloride on the other hand, the particle size of the first weather-resistant agent is 10-20 μm, and the specific surface area is 300-500 μm 2 Preferably, the first weathering agent in this range can further improve the properties of the polyvinyl chloride composition.
The invention also provides a preparation method of the polyvinyl chloride composite material, which comprises the following steps:
the polyvinyl chloride, the high-density polyethylene, the maleic anhydride grafted high-density polyethylene, the first weather-resistant agent and the second weather-resistant agent are weighed according to the proportion and fully mixed to obtain uniform premix, and it is understood that the mixing mode, the rotating speed, the time and the like are not particularly limited as long as the raw materials can be uniformly mixed;
and adding the premix into a double-screw extruder, and granulating through melt extrusion to obtain the polyvinyl chloride composite material.
Further, the working temperature of the twin-screw extruder is not particularly limited, and can be adjusted according to different selected raw materials, and in one or more embodiments of the present invention, the working temperatures of each zone of the twin-screw extruder are as follows: 160-180deg.C in the first zone, 180-190 deg.C in the second zone, 190-200deg.C in the third zone, 200-210 deg.C in the fourth zone, and 220-230deg.C in the sixth zone of 210-220 deg.C in the fifth zone.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, carbon black is added into a polyvinyl chloride formula system as a first weather-resistant agent, and is compounded with a second weather-resistant agent antioxidant ZKF, so that the heat weather resistance of the polyvinyl chloride is remarkably improved, and after 2000 hours of heat ageing, the mechanical property retention rate is high; in addition, the carbon black has conductivity, so that the resistivity of the polyvinyl chloride composition can be reduced, the static electricity of the polyvinyl chloride composition can be eliminated, and the static hazard of the polyvinyl chloride composition can be eliminated.
The high-density polyethylene is also added into the polyvinyl chloride formula system, so that the viscosity of the polyvinyl chloride in melting is regulated, and the processability of the polyvinyl chloride composite material is improved; meanwhile, the dispersibility of the carbon black in the polyvinyl chloride is improved, so that the carbon black is more uniformly dispersed in the polyvinyl chloride, and the mechanical property, antistatic capability and weather resistance of the polyvinyl chloride composite material are further improved.
The polyvinyl chloride composite material has excellent mechanical property, high-temperature weather resistance and antistatic capability, and has excellent comprehensive performance.
Detailed Description
In order that the invention may be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments that are illustrated below. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Specific information of the raw materials or auxiliaries used in the following examples are as follows:
PVC is Qilu petrochemical S700, and the polymerization degree is 650-750;
the maleic anhydride grafted high density polyethylene is dupont Fusabond E265, usa;
the mass flow rate of the high-density polyethylene melt is 40g/10min at 230 ℃ and 2.16kg, and the producer is China petrochemical;
the carbon black is new material high blackness carbon black 111 of Wangtai in Anyang city, the average grain diameter is 15 microns, and the specific surface area is 360m 2 /g；
Antioxidant ZKF manufacturer, hubei guang australia biotechnology.
It is to be understood that the above materials are only examples for making the technical solution of the present invention more clear, and do not represent that the present invention can only use the above materials, and the specific scope of the present invention is defined by the claims. In addition, "parts" and "parts" as used herein refer to parts by weight unless otherwise specified.
Example 1
100 parts of polyvinyl chloride, 50 parts of high-density polyethylene, 10 parts of maleic anhydride grafted high-density polyethylene, 5 parts of carbon black and 0.5 part of antioxidant ZKF are weighed and added into a high-speed mixer, and the mixture is uniformly mixed to obtain a premix.
Adding the premix into a double-screw extruder, and granulating through melt extrusion to obtain a polyvinyl chloride composite material; wherein, the working temperature of each region of the double-screw extruder is 160 ℃ in the first region, 180 ℃ in the second region, 190 ℃ in the third region, 200 ℃ in the fourth region, 210 ℃ in the fifth region and 220 ℃ in the sixth region in sequence.
Example 2
150 parts of polyvinyl chloride, 80 parts of high-density polyethylene, 20 parts of maleic anhydride grafted high-density polyethylene, 10 parts of carbon black and 0.8 part of antioxidant ZKF are weighed and added into a high-speed mixer, and the mixture is uniformly mixed to obtain a premix.
Adding the premix into a double-screw extruder, and granulating through melt extrusion to obtain a polyvinyl chloride composite material; wherein, the working temperature of each region of the double-screw extruder is 170 ℃ in a first region, 185 ℃ in a second region, 195 ℃ in a third region, 205 ℃ in a fourth region, 215 ℃ in a fifth region and 225 ℃ in a sixth region in sequence.
Example 3
200 parts of polyvinyl chloride, 100 parts of high-density polyethylene, 30 parts of maleic anhydride grafted high-density polyethylene, 15 parts of carbon black and 1 part of antioxidant ZKF are weighed and added into a high-speed mixer, and the mixture is uniformly mixed to obtain a premix.
Adding the premix into a double-screw extruder, and granulating through melt extrusion to obtain a polyvinyl chloride composite material; wherein, the working temperature of each region of the double-screw extruder is 180 ℃ in the first region, 190 ℃ in the second region, 200 ℃ in the third region, 210 ℃ in the fourth region, 220 ℃ in the fifth region and 230 ℃ in the sixth region in sequence.
Example 4
200 parts of polyvinyl chloride, 50 parts of high-density polyethylene, 20 parts of maleic anhydride grafted high-density polyethylene, 10 parts of carbon black and 1 part of antioxidant ZKF are weighed and added into a high-speed mixer, and the mixture is uniformly mixed to obtain a premix.
Adding the premix into a double-screw extruder, and granulating through melt extrusion to obtain a polyvinyl chloride composite material; wherein, the working temperature of each region of the double-screw extruder is 180 ℃ in the first region, 190 ℃ in the second region, 200 ℃ in the third region, 210 ℃ in the fourth region, 220 ℃ in the fifth region and 230 ℃ in the sixth region in sequence.
Comparative example 1
200 parts of polyvinyl chloride, 50 parts of high-density polyethylene, 20 parts of maleic anhydride grafted high-density polyethylene and 11 parts of carbon black are weighed and added into a high-speed mixer, and the premix is obtained after uniform mixing.
Adding the premix into a double-screw extruder, and granulating through melt extrusion to obtain a polyvinyl chloride composite material; wherein, the working temperature of each region of the double-screw extruder is 180 ℃ in the first region, 190 ℃ in the second region, 200 ℃ in the third region, 210 ℃ in the fourth region, 220 ℃ in the fifth region and 230 ℃ in the sixth region in sequence.
Comparative example 2
200 parts of polyvinyl chloride, 50 parts of high-density polyethylene, 20 parts of maleic anhydride grafted high-density polyethylene and 11 parts of antioxidant ZKF are weighed and added into a high-speed mixer, and the premix is obtained after uniform mixing.
Adding the premix into a double-screw extruder, and granulating through melt extrusion to obtain a polyvinyl chloride composite material; wherein, the working temperature of each region of the double-screw extruder is 180 ℃ in the first region, 190 ℃ in the second region, 200 ℃ in the third region, 210 ℃ in the fourth region, 220 ℃ in the fifth region and 230 ℃ in the sixth region in sequence.
Comparative example 3
200 parts of polyvinyl chloride, 50 parts of high-density polyethylene, 20 parts of maleic anhydride grafted high-density polyethylene, 10 parts of carbon black and 1 part of antioxidant 1010 are weighed and added into a high-speed mixer, and the mixture is uniformly mixed to obtain a premix.
Adding the premix into a double-screw extruder, and granulating through melt extrusion to obtain a polyvinyl chloride composite material; wherein, the working temperature of each region of the double-screw extruder is 180 ℃ in the first region, 190 ℃ in the second region, 200 ℃ in the third region, 210 ℃ in the fourth region, 220 ℃ in the fifth region and 230 ℃ in the sixth region in sequence.
Comparative example 4
200 parts of polyvinyl chloride, 50 parts of high-density polyethylene, 20 parts of maleic anhydride grafted high-density polyethylene, 10 parts of carbon black and 1 part of antioxidant 300 are weighed and added into a high-speed mixer, and the mixture is uniformly mixed to obtain a premix.
Adding the premix into a double-screw extruder, and granulating through melt extrusion to obtain a polyvinyl chloride composite material; wherein, the working temperature of each region of the double-screw extruder is 180 ℃ in the first region, 190 ℃ in the second region, 200 ℃ in the third region, 210 ℃ in the fourth region, 220 ℃ in the fifth region and 230 ℃ in the sixth region in sequence.
Comparative example 5
200 parts of polyvinyl chloride, 50 parts of high-density polyethylene, 20 parts of maleic anhydride grafted high-density polyethylene, 5.5 parts of antioxidant 1010 and 5.5 parts of antioxidant 168 are weighed and added into a high-speed mixer, and the mixture is uniformly mixed to obtain a premix.
Adding the premix into a double-screw extruder, and granulating through melt extrusion to obtain a polyvinyl chloride composite material; wherein, the working temperature of each region of the double-screw extruder is 180 ℃ in the first region, 190 ℃ in the second region, 200 ℃ in the third region, 210 ℃ in the fourth region, 220 ℃ in the fifth region and 230 ℃ in the sixth region in sequence.
Test case
The polyvinyl chloride composites prepared in examples and comparative examples were injection molded using ASTM standards, and the spline sizes (length x width x thickness) were:
tensile bars (dumbbell) 170mm x 13mm x 3.2mm, tensile strength using ASTM D638 standard test, tensile speed 5mm/min;
notched impact bars, 127mm x 13mm x 3.2mm, v-notch, notch depth 1/5, notched impact strength using ASTM D6110 standard test;
surface resistivity was measured according to ASTM D257;
the specific test parameters of the weather resistance test are as follows: the temperature fluctuation degree and uniformity degree are + -1 ℃ and the material aging temperature is 130 ℃ by using a blast type constant temperature drying oven.
The test results are shown in Table 1.
TABLE 1 polyvinyl chloride composite Performance test results
According to the test results in Table 1, the retention of mechanical properties of the polyvinyl chloride composite after 2000 hours of heat aging was calculated, and the results are shown in Table 2.
TABLE 2 retention of mechanical Properties of polyvinyl chloride composite after 2000h Heat aging
Note that: in table 2,% tensile strength retention =tensile strength after heat aging/tensile strength before heat aging x 100%;
notched impact retention% = notched impact strength after heat aging/notched impact strength before heat aging x 100%.
As can be seen from the test results in tables 1 and 2, the polyvinyl chloride composite material of the present invention has excellent antistatic ability and excellent weather resistance, and after 2000 hours of heat aging, both tensile strength and notched impact strength retention are maintained at high levels, with significant progress.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (6)
1. The polyvinyl chloride composite material is characterized by being prepared from 100-200 parts of polyvinyl chloride, 50-100 parts of high-density polyethylene, 10-30 parts of maleic anhydride grafted high-density polyethylene, 5-15 parts of a first weather-resistant agent and 0.5-1 part of a second weather-resistant agent according to parts by weight, wherein the first weather-resistant agent is carbon black, the second weather-resistant agent is an antioxidant ZKF, the particle size of the first weather-resistant agent is 10-20 mu m, and the specific surface area is 300-500m 2 /g。
2. The polyvinyl chloride composite material according to claim 1, wherein the polyvinyl chloride produced by the suspension method has a degree of polymerization of 650-1000.
3. The polyvinyl chloride composite of claim 1, wherein the high density polyethylene has a melt mass flow rate of 30-80g/10min at 230 ℃ and 2.16 kg.
4. The polyvinyl chloride composite material of claim 1, wherein the maleic anhydride grafted high density polyethylene has a grafting ratio of 5-15%.
5. A method of preparing a polyvinyl chloride composite material according to any one of claims 1 to 4, comprising the steps of:
weighing polyvinyl chloride, high-density polyethylene, maleic anhydride grafted high-density polyethylene, a first weather-resistant agent and a second weather-resistant agent according to the proportion, and fully mixing to obtain uniform premix;
and adding the premix into a double-screw extruder, and granulating through melt extrusion to obtain the polyvinyl chloride composite material.
6. The method of claim 5, wherein the working temperatures of the zones of the twin screw extruder are in sequence: 160-180deg.C in the first zone, 180-190 deg.C in the second zone, 190-200deg.C in the third zone, 200-210 deg.C in the fourth zone, and 220-230deg.C in the sixth zone of 210-220 deg.C in the fifth zone.
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| CN112143125A (en) * | 2019-06-28 | 2020-12-29 | 合肥杰事杰新材料股份有限公司 | Polyvinyl chloride material and preparation method thereof |
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| US6630238B2 (en) * | 1995-02-16 | 2003-10-07 | 3M Innovative Properties Company | Blended pressure-sensitive adhesives |
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| CN1205733A (en) * | 1995-12-22 | 1999-01-20 | 美国3M公司 | Blended pressure-sensitive adhesives |
| CN110066473A (en) * | 2018-01-23 | 2019-07-30 | 合肥杰事杰新材料股份有限公司 | A kind of pvc material and preparation method thereof |
| CN112143125A (en) * | 2019-06-28 | 2020-12-29 | 合肥杰事杰新材料股份有限公司 | Polyvinyl chloride material and preparation method thereof |
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