CN114773735B - Polyolefin composition with enhanced negative ion release amount and preparation method and application thereof - Google Patents
Polyolefin composition with enhanced negative ion release amount and preparation method and application thereof Download PDFInfo
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Abstract
The application discloses a polyolefin composition with enhanced anion release amount, which comprises the following raw materials in parts by weight: 60-90 parts of polyolefin mixture; 5-30 parts of filler; 1-5 parts of negative ion release agent; 1-10 parts of a conductive agent; 1-3 parts of auxiliary agents; 0.1-0.3 part of lubricant; 0.2-0.5 part of antioxidant; 0.2-0.5 part of weather-proof agent; wherein the auxiliary aid is diethanolamine with long-chain alkyl. The polyolefin composition with the reinforced anion release amount can stably and efficiently release anions, has long release life, can remarkably improve the anion content of living working environment, and greatly improves the air quality of living working environment; the application adopts the conductive agent to form a three-dimensional conductive microcircuit in the finished product, which is beneficial to the transfer of charges inside and outside the product and charges between molecules in the product, is beneficial to the formation of anions and enhances the release capacity of the anions.
Description
Technical Field
The patent application relates to the technical field of high polymer material modification, in particular to a polyolefin composition with reinforced anion release amount, and a preparation method and application thereof.
Background
Along with the improvement of the living conditions of people and the progress of national town, the people have a greater and greater degree of population, and more people pay attention to the living and working environments of the people and pay more attention to the physical state of the people. The current big data show that people feel chest distress, sleepiness and hypodynamia more and more easily in work and life, such as driving a car with an air conditioner for a long time, working in an office for a long time and the like. Conversely, people feel full and refreshing when in environments around a waterfall, around a forest or after thunderstorms. Related research data have revealed that this phenomenon is closely related to the existence of negative ions in the environment, and the time of the concentration of the negative ions in the environment influences the life and work feeling and physical state of people.
The negative ions are negatively charged gas ions in the air, and when molecules or atoms in the air lose or acquire electrons, charged particles are formed, and the positively charged gas ions and the negatively charged gas ions are called negative ions; negative ions not only can promote the synthesis and storage of vitamins in human bodies and strengthen and activate the physiological activities of human bodies, but also have very important influence on the life activities of human bodies and other organisms, so that the negative ions are also called as 'air vitamins'. It is considered to have very important influence on the life activities of human bodies and other organisms like vitamins in foods, and some of the negative ions in air are considered to be related to longevity, and is called as "longevity element". People need about 130 hundred million anions each day, and environments such as bedrooms, offices, entertainment venues and the like can only provide about 1-20 hundred million anions, so that more and more people are concerned about improving the anion content of living environments.
Patent CN106750906a discloses a polypropylene composite material with anion releasing function and a preparation method thereof, and the product has limited application range, and meanwhile, the effects of charge transfer inside and outside a workpiece and static electricity on the surface of the workpiece in the application process of the material are not solved, the actual release amount of anions is very low, and the anion content in the environment cannot be improved. Patent CN111363246a discloses a polypropylene material for releasing anions, a preparation method and application thereof, wherein yellow and white negative ion powder is adopted for compounding to enhance the release of anions, the increase range is limited, and the problem of low release efficiency of anions is not fundamentally solved.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, in order to solve the problem of low negative ion release efficiency, an object of the present application is to provide a polyolefin composition with enhanced negative ion release amount and a method for preparing the same, which on one hand creates basic conditions required for releasing negative ions from negative ion powder and on the other hand improves charge transfer and electrostatic influence of finished products, and by the above measures provides a polyolefin composition with enhanced negative ion release amount, so that the polyolefin composition has wide application prospects in automotive interiors, home appliance decorative panels and plastic parts in public facilities or private spaces.
In order to achieve the above purpose, the present application provides the following technical solutions:
a polyolefin composition with enhanced anion release amount comprises the following raw materials in parts by weight:
wherein the auxiliary aid is diethanolamine with long-chain alkyl.
Further, the carbon chain length of the long-chain alkyl in the diethanolamine of the long-chain alkyl is 20-30 repeating units.
Further, the preparation of the diethanolamine with long-chain alkyl group comprises the following steps:
s01, ammonolysis: performing condensation reaction on ammonia water and ethylene oxide at 40-50 ℃ and 2.0-3.0MPa to obtain a mixture formed by mixing ethanolamine, diethanolamine and triethanolamine;
s02, rectifying and purifying: deamination and dehydration are carried out on the mixture, and then rectification is carried out to obtain diethanolamine with purity not less than 99%;
s03, long-chain reaction: mixing long-chain halogenated alkane, a solvent and the diethanolamine in the step S02, heating and refluxing for 0.5-1 hour, cooling, adding sodium hydroxide solution and isopropanol, continuously heating and refluxing for 0.5-1 hour, cooling the reaction liquid, standing for 12-24 hours, filtering, and distilling the filtrate under reduced pressure to obtain the diethanolamine with long-chain alkyl.
Further, the mass concentration of the ammonia water in the step S01 is 15-40%;
in the step S02, the mixture is deaminated and dehydrated, namely, the mixture is firstly added into a flash tower to remove most of ammonia; adding the tower bottom material into a distillation tower to remove residual ammonia and most of water, and enabling the final tower bottom material to enter a vacuum dehydration tower to remove residual water, wherein the reflux ratio in the rectification process is 2-3:1, a step of;
in the step S03, long-chain halogenated alkane is bromoalkane or chloroalkane, and the solvent is one or a mixture of N, N-dimethylformamide, tetrahydrofuran and acetonitrile, wherein the molar ratio of the long-chain halogenated alkane to diethanolamine is 1.2-1.5:1, the temperature of heating reflux is 50-100 ℃.
Further, the polyolefin mixture is one or a mixture of homo-polypropylene, co-polypropylene, LLDPE, HDPE, LDPE, ethylene-propylene copolymer, ethylene-butene copolymer, ethylene-octene copolymer and other alpha-olefin polymerization or copolymerization products alone.
Further, the filler is one or a mixture of montmorillonite, talcum powder, mica, calcium carbonate and sepiolite with high diameter-thickness ratio, wherein the diameter-thickness ratio of the filler is at least 8:1.
Further, the negative ion releasing agent is a mixture of tourmaline powder and rare earth element mineral powder, and the weight percentage of the tourmaline powder and the rare earth element mineral powder is (0.65-1.55): 1, a step of; wherein, the mesh number of tourmaline powder is at least 1500 meshes;
the conductive agent is one or a mixture of carbon nano tubes and graphene.
Further, the antioxidant is one or a compound mixture of hindered phenols, thioesters and phosphite antioxidants;
the lubricant is one or a mixture of erucamide, stearate and stearic acid amide;
the weather-proof agent is a hindered amine stabilizer.
A method for preparing a polyolefin composition having enhanced anion release comprising the steps of:
s1, firstly, adding a polyolefin mixture, an anion releasing agent, a conductive agent, an auxiliary aid and various processing aids into a high-speed mixer according to the parts by weight, and mixing for 3-4min at 500-800rpm to obtain a premix;
s2, feeding premix from a main feeding port of a double-screw extruder, feeding filler from a side feeding port for melt extrusion, plasticizing, extruding and granulating to obtain a polyolefin composition material with reinforced negative ion release amount;
wherein the length-diameter ratio of the screw of the double screw extruder is 40-48:1, and the conditions of melt extrusion of the double screw extruder are as follows: the temperature of the first area is 190-210 ℃, the temperature of the second area is 210-220 ℃, the temperature of the third area is 215-225 ℃, the temperature of the fourth area is 215-225 ℃, the temperature of the fifth area is 215-225 ℃, the temperature of the sixth area is 215-225 ℃, the temperature of the seventh area is 220-230 ℃, the temperature of the eighth area is 220-230 ℃, the temperature of the ninth area is 220-230 ℃, the temperature of the tenth area is 210-220 ℃, the temperature of the eleventh area is 210-220 ℃, the main feeding speed is 300-400kg/h, and the screw rotating speed is 700-900rpm.
Compared with the prior art, the application has the beneficial effects that:
1. the polyolefin composition with the reinforced anion release amount can stably and efficiently release anions, has long release life, can remarkably improve the anion content of living working environment, and greatly improves the air quality of living working environment;
2. the application adopts the filler with high diameter-thickness ratio, and provides an advantage for releasing anions for the anion releasing agent by utilizing the high hygroscopicity of the filler in the finished product, thereby enhancing the anion releasing capability of the anion releasing agent;
3. according to the application, the carbon nano tube or the graphene is used as a conductive agent, so that a three-dimensional conductive microcircuit is formed in the finished product, the charge transfer between the inside and outside of the product and the charge transfer between molecules in the product are facilitated, the formation of anions is facilitated, and the anion release capacity is enhanced;
4. the self-made auxiliary agent is adopted, so that the electrostatic effect of the surface of the product in the use process can be avoided, electrostatic interference is prevented, and the negative ion release capacity is enhanced;
5. according to the application, due to the enhancement of the release capacity of the negative ion release agent, the addition amount of the corresponding release agent can be reduced, the relative safety is improved, and meanwhile, the number of the negative ion release agent is larger, the addition amount is less, and the influence on other mechanical properties of the polyolefin composition is small;
6. the high-aspect ratio filler used in the application is added in a side feeding mode to improve the protection of the sheet layer, and meanwhile, the sheet layer is peeled off at a high rotating speed, so that the obtained polyolefin composition has excellent performance and can meet the requirements of different application environments on the material performance.
Detailed Description
Other advantages and effects of the present application will be readily apparent to those skilled in the art from the present disclosure, by describing embodiments of the present application with specific examples. This application is also intended to cover any adaptations or uses of various embodiments and can be practiced in different but specific details of the subject matter within the scope of the description and from various points of view. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
The auxiliary agent used in each of the following examples is diethanolamine having a long-chain alkyl group, wherein the carbon chain length of the long-chain alkyl group in the diethanolamine of the long-chain alkyl group is 20 to 30 repeating units.
Specifically, the preparation of diethanolamine having long-chain alkyl groups comprises the steps of:
s01, ammonolysis: carrying out condensation reaction on ammonia water and ethylene oxide at 50 ℃ and 3.0MPa to obtain a mixture formed by mixing ethanolamine, diethanolamine and triethanolamine, wherein the mass concentration of the ammonia water is 40%;
s02, rectifying and purifying: deamination and dehydration are carried out on the mixture, and then rectification is carried out to obtain diethanolamine with purity not less than 99%; the mixture is deaminated and dehydrated, namely the mixture is firstly added into a flash tower to remove most of ammonia; then adding the tower bottom material into a distillation tower to remove residual ammonia and most of water, and enabling the final tower bottom material to enter a vacuum dehydration tower to remove residual water, wherein the reflux ratio in the rectification process is 3:1, a step of;
s03, long-chain reaction: mixing long-chain halogenated alkane, a solvent and diethanolamine in the step S02, heating and refluxing for 1 hour, cooling, adding sodium hydroxide solution and isopropanol, continuously heating and refluxing for 1 hour, cooling a reaction liquid, standing for 24 hours, filtering, and distilling filtrate under reduced pressure to obtain the diethanolamine with long-chain alkyl, wherein the long-chain halogenated alkane is bromoalkane or chloroalkane, the solvent is one or a mixture of N, N-dimethylformamide, tetrahydrofuran and acetonitrile, and the molar ratio of the long-chain halogenated alkane to the diethanolamine is 1.5:1, the temperature of the heating reflux is 100 ℃.
Example 1
20 parts of copolymerized PP (M60 RHC), 12 parts of copolymerized PP (K7227H), 25 parts of copolymerized PP (1215C), 4 parts of ethylene-octene copolymer, 4 parts of ethylene-propylene copolymer, 7 parts of HDPE, 5 parts of negative ion releasing agent (tourmaline powder and rare earth element mineral powder are mixed according to the weight percentage of 1.2:1), 3 parts of carbon nano tube, 1 part of auxiliary additive, 0.3 part of antioxidant 1076, 0.2 part of antioxidant 168, 0.25 part of weather-proof agent 3808 and 0.2 part of calcium stearate are put into a high-speed mixer to be mixed for 4 minutes at 500rpm, so as to obtain premix;
the premix is put into a main feeding port of a double-screw extruder, 20 parts of talcum powder (the diameter-thickness ratio is 9:1) is put into the side feeding port for melt extrusion, and then the polyolefin composition material with the reinforced negative ion release amount is prepared through plasticizing, extruding and granulating.
Wherein the length-diameter ratio of the screw of the double screw extruder is 48:1, and the conditions of melt extrusion of the double screw extruder are as follows: the temperature of the first area is 190 ℃, the temperature of the second area is 210 ℃, the temperature of the third area is 215 ℃, the temperature of the fourth area is 215 ℃, the temperature of the fifth area is 215 ℃, the temperature of the sixth area is 215 ℃, the temperature of the seventh area is 220 ℃, the temperature of the eighth area is 220 ℃, the temperature of the ninth area is 220 ℃, the temperature of the tenth area is 210 ℃, the temperature of the eleventh area is 210 ℃, and the main feeding speed is 300kg/h and the screw rotating speed is 700rpm.
Example 2
The preparation method is the same as in example 1, and the raw materials are as follows: 20 parts of copolymerized PP (M60 RHC), 7 parts of copolymerized PP (K7227H), 25 parts of copolymerized PP (1215C), 4 parts of ethylene-octene copolymer, 4 parts of ethylene-propylene copolymer, 7 parts of HDPE, 30 parts of talcum powder (the diameter-thickness ratio is 9:1), 5 parts of negative ion releasing agent (tourmaline powder and rare earth mineral powder are mixed according to the weight percentage of 1.5:1), 8 parts of carbon nano tube, 2 parts of auxiliary agent, 0.3 part of antioxidant 1076, 0.2 part of antioxidant 168, 0.25 part of weather-proof agent 3808 and 0.2 part of calcium stearate.
Example 3
The preparation method is the same as in example 1, and the raw materials are as follows: 20 parts of copolymerized PP (M60 RHC), 12 parts of copolymerized PP (K7227H), 25 parts of copolymerized PP (1215C), 4 parts of ethylene-octene copolymer, 4 parts of ethylene-propylene copolymer, 7 parts of HDPE, 20 parts of talcum powder (the diameter-thickness ratio is 9:1), 5 parts of negative ion releasing agent (tourmaline powder and rare earth mineral powder are mixed according to the weight percentage of 0.8:1), 3 parts of carbon nano tube, 3 parts of auxiliary agent, 0.3 part of antioxidant 1076, 0.2 part of antioxidant 168, 0.25 part of weather-proof agent 3808 and 0.2 part of calcium stearate.
Comparative example 1
The preparation method is the same as in example 1, and the raw materials are as follows: 20 parts of copolymerized PP (M60 RHC), 12 parts of copolymerized PP (K7227H), 25 parts of copolymerized PP (1215C), 4 parts of ethylene-octene copolymer, 4 parts of ethylene-propylene copolymer, 7 parts of HDPE, 20 parts of talcum powder (the diameter-thickness ratio is 2:1), 5 parts of negative ion releasing agent (tourmaline powder and rare earth mineral powder are mixed according to the weight percentage of 1.2:1), 3 parts of carbon nano tube, 1 part of auxiliary agent, 0.3 part of antioxidant 1076, 0.2 part of antioxidant 168, 0.25 part of weather-proof agent 3808 and 0.2 part of calcium stearate.
Comparative example 2
The preparation method is the same as in example 1, and the raw materials are as follows: 20 parts of copolymerized PP (M60 RHC), 12 parts of copolymerized PP (K7227H), 25 parts of copolymerized PP (1215C), 4 parts of ethylene-octene copolymer, 4 parts of ethylene-propylene copolymer, 7 parts of HDPE, 20 parts of talcum powder (the diameter-thickness ratio is 9:1), 5 parts of negative ion releasing agent (tourmaline powder and rare earth element mineral powder are mixed according to the weight percentage of 1.2:1), 1 part of auxiliary agent, 0.3 part of antioxidant 1076, 0.2 part of antioxidant 168, 0.25 part of weather-proof agent 3808 and 0.2 part of calcium stearate.
Comparative example 3
The preparation method is the same as in example 1, and the raw materials are as follows: 20 parts of copolymerized PP (M60 RHC), 12 parts of copolymerized PP (K7227H), 25 parts of copolymerized PP (1215C), 4 parts of ethylene-octene copolymer, 4 parts of ethylene-propylene copolymer, 7 parts of HDPE, 20 parts of talcum powder (the diameter-thickness ratio is 9:1), 5 parts of anion releasing agent (tourmaline powder and rare earth mineral powder are mixed according to the weight percentage of 1.2:1), 3 parts of carbon nano tube, 0.3 part of antioxidant 1076, 0.2 part of antioxidant 168, 0.25 part of weather-proof agent 3808 and 0.2 part of calcium stearate.
Comparative example 4
The preparation method is the same as in example 1, and the raw materials are as follows: 20 parts of copolymerized PP (M60 RHC), 12 parts of copolymerized PP (K7227H), 25 parts of copolymerized PP (1215C), 4 parts of ethylene-octene copolymer, 4 parts of ethylene-propylene copolymer, 7 parts of HDPE, 20 parts of talcum powder (diameter-thickness ratio is 9:1), 5 parts of negative ion releasing agent (polypropylene composite material with a negative ion releasing function prepared by patent CN 106750906A), 3 parts of carbon nano tube, 1 part of auxiliary agent, 0.3 part of antioxidant 1076, 0.2 part of antioxidant 168, 0.25 part of weather-proof agent 3808 and 0.2 part of calcium stearate.
Comparative example 5
The materials were the same as in example 1 except that all talc powder and other materials were synchronously fed into a high-speed mixer to obtain a premix, which was fed from the main feeding port of a twin-screw extruder to be melt-extruded, and then plasticized, extruded, and pelletized.
The products of the comparative example and the example are injection molded into test bars and templates with corresponding specifications according to GB requirements, and specific test requirements and test data are shown in the following table 1:
TABLE 1 test results for examples 1-3 and comparative examples 1-5
Remarks: the negative ion release amount is tested according to the national standard GB/T28628-2012, and the negative ion content in the closed space is fixed in a dynamic balance state in the test process, so that the data given by the detection data is in a certain range; the other mechanical properties are tested according to the corresponding GB standard, and the corresponding data are average values of multiple test results.
By comparing the data of the examples with the data of the comparative examples, it is evident that:
comparative examples 1-3 and comparative example 1 found that examples 1-3 added a ratio of caliper to thickness of 9:1 as filler, and can obviously improve the negative ion release capacity compared with the talcum powder with common diameter-thickness ratio.
Comparative examples 1 to 3 and comparative example 2 have found that the addition of the carbon nanotube conductive agent in examples 1 to 3 can significantly improve the anion releasing ability.
Comparative examples 1 to 3 and comparative example 3 have found that the addition of auxiliary assistants in examples 1 to 3 significantly improves the anion releasing ability.
Comparing examples 1-3 with comparative example 4, it is found that the negative ion releasing agent consisting of tourmaline powder and rare earth mineral powder is added in examples 1-3, which can significantly improve the negative ion releasing capability, and the concentration of the negative ions released by the scheme of the application in unit space is higher than that of the conventional scheme under the condition of equivalent amount of negative ion releasing agent.
Comparative examples 1-3 and comparative example 5 found that talc powder (ratio of 9:1) in comparative example 5 was premixed with other raw materials and then fed from the main feeding port in synchronization, and talc powder (ratio of 9:1) in examples 1-3 was fed from the side feeding port, and the mechanical properties thereof were remarkably improved and the anion releasing ability thereof was remarkably improved.
The application creates the basic condition needed by anion powder to release anions on one hand, improves the charge transfer and the electrostatic influence of the finished product on the other hand, and provides the polyolefin composition with the reinforced anion release amount through the measures, so that the polyolefin composition has wide application prospect in automotive interiors, household appliance decorative plates and plastic parts in public facilities or private spaces.
The above-described embodiments are merely illustrative of the principles of the present application and their effectiveness, and are not intended to limit the present application. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications and variations which a person having ordinary skill in the art would accomplish without departing from the spirit and technical spirit disclosed in the present patent application shall be covered by the claims of the present patent application.
Claims (8)
1. The polyolefin composition with the enhanced anion release amount is characterized by comprising the following raw materials in parts by weight:
60-90 parts of polyolefin mixture;
5-30 parts of filler;
1-5 parts of negative ion release agent;
1-10 parts of a conductive agent;
1-3 parts of auxiliary agents;
0.1-0.3 part of lubricant;
0.2-0.5 part of antioxidant;
0.2-0.5 part of weather-proof agent;
wherein the auxiliary agent is diethanolamine with long-chain alkyl;
the filler is one or a mixture of montmorillonite, talcum powder, mica, calcium carbonate and sepiolite with a high diameter-thickness ratio, wherein the diameter-thickness ratio of the filler is at least 8:1;
the negative ion releasing agent is a mixture of tourmaline powder and rare earth element mineral powder, and the weight ratio of the tourmaline powder to the rare earth element mineral powder is (0.65-1.55): 1, a step of; wherein, the mesh number of tourmaline powder is at least 1500 meshes;
the conductive agent is one or a mixture of carbon nano tubes and graphene.
2. The polyolefin composition with enhanced anion release of claim 1, wherein the carbon chain length of the long chain alkyl group in the diethanolamine of the long chain alkyl group is 20-30 repeating units.
3. The polyolefin composition with enhanced anion release according to claim 2, wherein the preparation of the diethanolamine with long-chain alkyl group comprises the steps of:
s01, ammonolysis: performing condensation reaction on ammonia water and ethylene oxide at 40-50 ℃ and 2.0-3.0MPa to obtain a mixture formed by mixing ethanolamine, diethanolamine and triethanolamine;
s02, rectifying and purifying: deamination and dehydration are carried out on the mixture, and then rectification is carried out to obtain diethanolamine with purity not less than 99%;
s03, long-chain reaction: mixing long-chain halogenated alkane, a solvent and the diethanolamine in the step S02, heating and refluxing for 0.5-1 hour, cooling, adding sodium hydroxide solution and isopropanol, continuously heating and refluxing for 0.5-1 hour, cooling the reaction liquid, standing for 12-24 hours, filtering, and distilling the filtrate under reduced pressure to obtain the diethanolamine with long-chain alkyl.
4. A polyolefin composition with enhanced anion release according to claim 3, wherein the ammonia mass concentration in step S01 is 15-40%;
in the step S02, the mixture is deaminated and dehydrated, namely, the mixture is firstly added into a flash tower to remove most of ammonia; adding the tower bottom material into a distillation tower to remove residual ammonia and most of water, and enabling the final tower bottom material to enter a vacuum dehydration tower to remove residual water, wherein the reflux ratio in the rectification process is 2-3:1, a step of;
in the step S03, long-chain halogenated alkane is bromoalkane or chloroalkane, and the solvent is one or a mixture of N, N-dimethylformamide, tetrahydrofuran and acetonitrile, wherein the molar ratio of the long-chain halogenated alkane to diethanolamine is 1.2-1.5:1, the temperature of heating reflux is 50-100 ℃.
5. The polyolefin composition of claim 1, wherein the polyolefin mixture is one or more of homo-polypropylene, co-polypropylene, LLDPE, HDPE, LDPE, ethylene-butene copolymer, ethylene-octene copolymer and other alpha-olefins polymerized or copolymerized alone.
6. The polyolefin composition with enhanced anion release of claim 1, wherein the antioxidant is one or a compounded mixture of hindered phenols, thioesters, phosphite antioxidants;
the lubricant is one or a mixture of erucamide, stearate and stearic acid amide;
the weather-proof agent is a hindered amine stabilizer.
7. A process for the preparation of a polyolefin composition having enhanced anion release according to any of claims 1 to 6, comprising the steps of:
s1, firstly, adding a polyolefin mixture, an anion releasing agent, a conductive agent, an auxiliary aid and various processing aids into a high-speed mixer according to the parts by weight, and mixing for 3-4min at 500-800rpm to obtain a premix;
s2, feeding premix from a main feeding port of a double-screw extruder, feeding filler from a side feeding port for melt extrusion, plasticizing, extruding and granulating to obtain a polyolefin composition material with reinforced negative ion release amount;
wherein the length-diameter ratio of the screw of the double screw extruder is 40-48:1, and the conditions of melt extrusion of the double screw extruder are as follows: the temperature of the first area is 190-210 ℃, the temperature of the second area is 210-220 ℃, the temperature of the third area is 215-225 ℃, the temperature of the fourth area is 215-225 ℃, the temperature of the fifth area is 215-225 ℃, the temperature of the sixth area is 215-225 ℃, the temperature of the seventh area is 220-230 ℃, the temperature of the eighth area is 220-230 ℃, the temperature of the ninth area is 220-230 ℃, the temperature of the tenth area is 210-220 ℃, the temperature of the eleventh area is 210-220 ℃, the main feeding speed is 300-400kg/h, and the screw rotating speed is 700-900rpm.
8. Use of the polyolefin composition with enhanced anion release according to any of claims 1-6 in automotive interiors, household trim panels and plastic parts in public or private spaces.
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