CN115340709B - Antioxidant stabilizer composition, polypropylene special material and preparation method of polypropylene special material - Google Patents
Antioxidant stabilizer composition, polypropylene special material and preparation method of polypropylene special material Download PDFInfo
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- 239000003963 antioxidant agent Substances 0.000 title claims abstract description 89
- 230000003078 antioxidant effect Effects 0.000 title claims abstract description 82
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 69
- -1 polypropylene Polymers 0.000 title claims abstract description 69
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 69
- 239000000463 material Substances 0.000 title claims abstract description 49
- 239000000203 mixture Substances 0.000 title claims abstract description 41
- 239000003381 stabilizer Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims description 7
- 150000001875 compounds Chemical class 0.000 claims abstract description 39
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 150000007970 thio esters Chemical class 0.000 claims abstract description 16
- 239000002253 acid Substances 0.000 claims abstract description 15
- 239000006096 absorbing agent Substances 0.000 claims abstract description 13
- 239000000155 melt Substances 0.000 claims description 9
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 4
- 235000013539 calcium stearate Nutrition 0.000 claims description 4
- 239000008116 calcium stearate Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 14
- 230000003647 oxidation Effects 0.000 abstract description 13
- 230000005012 migration Effects 0.000 abstract description 3
- 238000013508 migration Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 10
- 230000032683 aging Effects 0.000 description 8
- 238000001125 extrusion Methods 0.000 description 6
- 229940043430 calcium compound Drugs 0.000 description 3
- 150000001674 calcium compounds Chemical class 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000005469 granulation Methods 0.000 description 3
- 230000003179 granulation Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000003809 water extraction Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000012668 chain scission Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 150000002432 hydroperoxides Chemical class 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- 150000003752 zinc compounds Chemical class 0.000 description 2
- JOLVYUIAMRUBRK-UHFFFAOYSA-N 11',12',14',15'-Tetradehydro(Z,Z-)-3-(8-Pentadecenyl)phenol Natural products OC1=CC=CC(CCCCCCCC=CCC=CCC=C)=C1 JOLVYUIAMRUBRK-UHFFFAOYSA-N 0.000 description 1
- YLKVIMNNMLKUGJ-UHFFFAOYSA-N 3-Delta8-pentadecenylphenol Natural products CCCCCCC=CCCCCCCCC1=CC=CC(O)=C1 YLKVIMNNMLKUGJ-UHFFFAOYSA-N 0.000 description 1
- JOLVYUIAMRUBRK-UTOQUPLUSA-N Cardanol Chemical compound OC1=CC=CC(CCCCCCC\C=C/C\C=C/CC=C)=C1 JOLVYUIAMRUBRK-UTOQUPLUSA-N 0.000 description 1
- FAYVLNWNMNHXGA-UHFFFAOYSA-N Cardanoldiene Natural products CCCC=CCC=CCCCCCCCC1=CC=CC(O)=C1 FAYVLNWNMNHXGA-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- PTFIPECGHSYQNR-UHFFFAOYSA-N cardanol Natural products CCCCCCCCCCCCCCCC1=CC=CC(O)=C1 PTFIPECGHSYQNR-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- FAIAAWCVCHQXDN-UHFFFAOYSA-N phosphorus trichloride Chemical compound ClP(Cl)Cl FAIAAWCVCHQXDN-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
- C08K5/34924—Triazines containing cyanurate groups; Tautomers thereof
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/37—Thiols
- C08K5/372—Sulfides, e.g. R-(S)x-R'
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
- C08K5/526—Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/527—Cyclic esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The application provides an antioxidant stabilizer composition, comprising: hindered phenol antioxidants, phosphite antioxidants, thioester antioxidants, and acid absorbers; the hindered phenol antioxidant is selected from one or more of a compound with a structure of formula (AO-1), a compound with a structure of formula (AO-2) and a compound with a structure of formula (AO-3); the phosphite antioxidant is selected from one or two of a compound with a structure of a formula (PS-1) and a compound with a structure of a formula (PS-2); the thioester antioxidant is selected from compounds with a structure shown in a formula (TS-1); the antioxidant is combined to make the obtained composition have high oxidation resistance, low volatilization and no migration, and the oxidation resistance and the quality of the composition can be obviously improved by adding the composition into a special material for polypropylene pipes, so that the service life of the polypropylene pipes is prolonged.
Description
Technical Field
The application relates to the technical field of polymer material additives, in particular to an antioxidant stabilizer composition, a polypropylene special material and a preparation method of the polypropylene special material.
Background
In the process of processing and daily use, the high polymer material is easily influenced by oxygen, light, heat or metal ion impurities in the air, and free radical reaction occurs, so that the problems of discoloration, cracking and loss of glossiness of the polymer are caused, on one hand, the appearance becomes unattractive, and the mechanical property is seriously reduced.
The thermal oxidation aging is the change of polypropylene at all times, is a main cause of oxidative degradation of polypropylene, seriously affects the appearance and processing stability of polypropylene, and needs to add a stabilizer to improve the processing stability and product performance of polypropylene. During the production and storage of polypropylene, the polypropylene is aged under the action of heat and oxygen in air, and during the production of polypropylene, the residual catalyst, equipment corrosion and other factors used in the polymerization process cause the polypropylene to contain harmful metal ions such as titanium, magnesium, chlorine and the like, which have catalytic action on the oxidation reaction of polypropylene, so that the oxidation aging speed of polypropylene is increased.
The national standard GB/T18742.1-2017 (polypropylene pipe line System part 2 pipe for Cold and Hot Water) carries out standardization convention on the quality technical index of a polypropylene pipe, wherein the index with the closest relationship with a stabilizer is a melt index, and the melt index of a pipe material is not more than 0.5g/10min; secondly, the oxidation induction time is required to be not less than 20 minutes, in addition, the yellow index is an important characterization index of the color characteristics of plastics without pigment and carbon black, the detection of the index is standardized by the national standard GB/T2409 'test method for Plastic yellow index', and the smaller the yellow index is, the lighter the yellowing is, and the better the color stability is.
Aging of polypropylene is macroscopically represented by oxidation chain scission, after aging of polypropylene pipe materials, yellow index is increased due to yellowing of color, melt index is increased and stability is poor due to oxidation chain scission, and instability of melt index seriously affects processing of polypropylene and mechanical properties and long-term use stability of products. In order to prevent the aging of the polypropylene tube material during the post-treatment processing and during storage, a suitable stabilizer must be added after the polymerization has ended to provide stability protection early.
Disclosure of Invention
The application solves the technical problem of providing an antioxidant stabilizer composition, which has high antioxidant effect and water extraction resistance and can obviously improve the antioxidant property of a special polypropylene material.
In view of this, the present application provides an antioxidant stabilizer composition comprising: hindered phenol antioxidants, phosphite antioxidants, thioester antioxidants, and acid absorbers;
the hindered phenol antioxidant is selected from one or more of a compound with a structure of formula (AO-1), a compound with a structure of formula (AO-2) and a compound with a structure of formula (AO-3);
the phosphite antioxidant is selected from one or two of a compound with a structure of a formula (PS-1) and a compound with a structure of a formula (PS-2);
the thioester antioxidant is selected from compounds with a structure shown in a formula (TS-1);
preferably, the acid acceptor is selected from one or both of an organocalcium compound and an organozinc compound.
Preferably, the organic calcium compound is selected from calcium stearate.
Preferably, the organozinc compound is selected from zinc stearate.
Preferably, the mass ratio of the hindered phenol antioxidant, the phosphite antioxidant, the thioester antioxidant and the acid absorber is 1: (0.2-1): (0.1-0.5): (0.1-0.5).
Preferably, the mass ratio of the hindered phenol antioxidant, the phosphite antioxidant, the thioester antioxidant and the acid absorber is 1: (0.3-0.8): (0.2-0.4): (0.2-0.4).
The application also provides a special polypropylene material, which comprises polypropylene and the antioxidant stabilizer composition.
Preferably, the mass ratio of the polypropylene to the antioxidant stabilizer composition is 100: (0.5-1.0).
The application also provides a preparation method of the special polypropylene material, which comprises the following steps:
mixing polypropylene and an antioxidant stabilizer composition to obtain a mixture;
extruding and granulating the mixture in a double-screw extruder to obtain the special polypropylene material.
Preferably, the temperature of the first area of the double-screw extruder is 210-230 ℃, the temperature of the second area is 220-240 ℃, the temperature of the third area is 230-250 ℃, the temperature of the fourth area is 230-250 ℃, the temperature of the fifth area is 220-240 ℃, the temperature of the machine head is 210-230 ℃, and the temperature of the melt is 220-240 ℃; the melt pressure is 0.1-0.2 MPa, the host current is 5.0-6.0A, the host rotating speed is 15-25 r/min, and the main feeding is 15-20 r/min.
The application provides an antioxidant stabilizer composition, which selects specific hindered phenol antioxidant, phosphite antioxidant, thioester antioxidant and acid absorber; the antioxidant acts together, so that the obtained composition has the advantages of low oxidation resistance, low energy consumption, low volatilization and no migration, and the oxidation resistance and the quality of the special polypropylene material can be obviously improved when the composition is added into a polypropylene pipe product. The experimental results show that: compared with the polypropylene pipe material added with the traditional antioxidant, the polypropylene pipe material added with the antioxidant stabilizer composition has obviously improved processing stability and extraction resistance, and obviously improved comprehensive thermal oxidation aging resistance.
Detailed Description
For a further understanding of the present application, preferred embodiments of the application are described below in conjunction with the examples, but it should be understood that these descriptions are merely intended to illustrate further features and advantages of the application, and are not limiting of the claims of the application.
Aiming at the problems that the addition amount and the performance of the antioxidant stabilizer do not reach the standards in the prior art, the application provides the antioxidant stabilizer, which has high antioxidant effect and water extraction resistance by selecting a specific antioxidant stabilizer, and can obviously improve the antioxidant performance of the special polypropylene material under the condition of small addition amount. Specifically, the embodiment of the application discloses an antioxidant stabilizer composition, which comprises the following components: hindered phenol antioxidants, phosphite antioxidants, thioester antioxidants, and acid absorbers;
the hindered phenol antioxidant is selected from one or more of a compound with a structure of formula (AO-1), a compound with a structure of formula (AO-2) and a compound with a structure of formula (AO-3);
the phosphite antioxidant is selected from one or two of a compound with a structure of a formula (PS-1) and a compound with a structure of a formula (PS-2);
the thioester antioxidant is selected from compounds with a structure shown in a formula (TS-1);
in the antioxidant stabilizer composition provided by the application, the phosphite antioxidant is a bio-based, nonylphenol-free and safe and healthy antioxidant synthesized by using bio-based raw material cardanol to replace chemically synthesized alkylphenol to react with phosphorus trichloride, and comprises a structural compound shown in a formula (PS-1) and/or a structural compound shown in a formula (PS-2).
In the present application, the hindered phenol antioxidant is selected from one or more of a structural compound of formula (AO-1), a structural compound of formula (AO-2), and a structural compound of formula (AO-3):
the sources of the structural compound of formula (AO-1), the structural compound of formula (AO-2) and the structural compound of formula (AO-3) are not particularly limited, and they can be obtained by commercially available products or by synthesis by reference to conventional methods.
In the present application, the acid acceptor is selected from one or both of an organic calcium compound and an organic zinc compound, more specifically, the organic calcium compound is selected from calcium stearate (CaSt), and the organic zinc compound is selected from zinc stearate (ZnSt).
In the application, the mass ratio of the hindered phenol antioxidant to the phosphite antioxidant to the thioester antioxidant to the acid absorber is 1: (0.2-1): (0.1-0.5): (0.1 to 0.5); more specifically, the mass ratio of the hindered phenol antioxidant, the phosphite antioxidant, the thioester antioxidant and the acid absorber is 1: (0.3-0.8): (0.2-0.4): (0.2-0.4).
In the antioxidant stabilizer composition provided by the application, the hindered phenol antioxidant is a core foundation of the stabilizer composition, mainly plays a role in eliminating free radicals, the phosphite antioxidant is an auxiliary component and helps to eliminate the problems of excessive content of hydroperoxides, easy precipitation, hydrolysis and the like, the thioester antioxidant also plays a role in eliminating the hydroperoxides, the excessive content of the thioester antioxidant can cause bad smell and precipitation risk, the acid absorber mainly plays a role in neutralizing acidic substances in materials and passivating catalyst residues, and the excessive content of the acid absorber can cause excessive ash of products, so that the processing stability, color and long-acting stability of the products are affected.
The application also provides a polypropylene special material, in particular a polypropylene pipe special material, which comprises polypropylene and the antioxidant stabilizer composition.
In the application, the mass ratio of the polypropylene to the antioxidant stabilizer composition is 100: (0.5 to 1.0); more specifically, the mass ratio of the polypropylene to the antioxidant stabilizer composition is 100: (0.6-0.8). In the special polypropylene material provided by the application, the long-acting stability is influenced due to the fact that the addition amount of the antioxidant stabilizer composition is too small, the service life of a product is reduced, the service life requirement of the pipe material in municipal construction and industrial fields is difficult to meet, the precipitation risk is high due to the fact that the addition amount is too large, and the mechanical property of the special material is influenced.
The application also provides a preparation method of the special polypropylene material, which comprises the following steps:
mixing polypropylene and an antioxidant stabilizer composition to obtain a mixture;
and (3) extruding and granulating the mixture for three times in a double-screw extruder to obtain the special polypropylene material.
In the preparation process of the polypropylene special material, the temperature of a first area of the twin-screw extruder is 210-230 ℃, the temperature of a second area of the twin-screw extruder is 220-240 ℃, the temperature of a third area of the twin-screw extruder is 230-250 ℃, the temperature of a fourth area of the twin-screw extruder is 230-250 ℃, the temperature of a fifth area of the twin-screw extruder is 220-240 ℃, the temperature of a machine head is 210-230 ℃, and the temperature of a melt is 220-240 ℃; the melt pressure is 0.1-0.2 MPa, the host current is 5.0-6.0A, the host rotating speed is 15-25 r/min, and the main feeding is 15-20 r/min.
In the application, the special polypropylene material is specifically a special polypropylene pipe material.
The application provides an antioxidant stabilizer composition suitable for improving the antioxidant property of polypropylene pipe materials, aiming at the production and processing characteristics of the polypropylene pipe materials. The antioxidant stabilizer composition provided by the application has the characteristics of good antioxidant effect, water extraction resistance, no migration and the like, and can obviously improve the antioxidant property and quality of the polypropylene pipe material when being added into the polypropylene pipe material. The experimental results show that: compared with the polypropylene pipe material added with the traditional antioxidant, the polypropylene pipe material added with the antioxidant stabilizer composition has obviously improved processing stability and extraction resistance, and obviously improved comprehensive thermal oxidation aging resistance.
The antioxidant stabilizer composition provided by the application is added into the special polypropylene material, so that the special polypropylene material has higher antioxidant performance and quality. The experimental results show that: compared with the polypropylene pipe material added with the traditional antioxidant, the polypropylene pipe material provided by the application has the advantages that the processing stability and the oxidation induction period time are obviously prolonged, and the comprehensive thermal-oxidative aging resistance is obviously improved.
For a further understanding of the present application, the antioxidant stabilizer composition and its application provided in the present application are described in detail with reference to the following examples, to which the scope of the present application is not limited.
Examples
1) Uniformly mixing an antioxidant stabilizer with 500 g of polypropylene pipe material base material (PPR, brand PA14D, initial melt index of 0.2 and initial yellow index of-0.3) according to a prescribed amount of Table 2 (the mass percentage in the table is based on 100g of the polypropylene pipe material base material);
2) Carrying out three times of extrusion granulation in a double-screw extruder, wherein the first time and the third time of extrusion granulation leave about 50 g of samples, and the second time of extrusion granulation leave about 100g of samples; the first about 100 grams of the first extrusion, the second extrusion, and the first about 50 grams of the third extrusion after each formulation switch were used as transitions to preserve the particle retention property effectiveness.
3) The melt index, the yellowness index of the second extruded pellet, and the OIT were measured separately for each sample.
The information of the twin-screw extruder and the detecting instrument is as follows:
twin screw extruder: the SHJ-20 co-rotating twin screw extruder produced about 5 kg 1 hour and the main operating parameters of the extruder are shown in Table 1:
table 1 major operating parameters of twin screw extruder
Yellow index detection: SC-80C full-automatic color difference meter;
melt index detection: GT-7100MI melt finger apparatus, available from apparatus Inc. of Maillard Jin Jian.
The test results are shown in Table 2:
TABLE 2 statistical tables of melt index, yellow index, oxidation induction period test results
Note that: other numbered antioxidants are well known to those skilled in the art.
The above description of the embodiments is only for aiding in the understanding of the method of the present application and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the application can be made without departing from the principles of the application and these modifications and adaptations are intended to be within the scope of the application as defined in the following claims.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A polypropylene tubing material comprising polypropylene and an antioxidant stabilizer composition, said antioxidant stabilizer composition comprising: hindered phenol antioxidants, phosphite antioxidants, thioester antioxidants, and acid absorbers;
the hindered phenol antioxidant is selected from at least one of a compound with a structure of formula (AO-2) and a compound with a structure of formula (AO-3) and a compound with a structure of formula (AO-1);
the phosphite antioxidant is selected from one or two of a compound with a structure of a formula (PS-1) and a compound with a structure of a formula (PS-2);
the thioester antioxidant is selected from compounds with a structure shown in a formula (TS-1);
the mass ratio of the polypropylene to the antioxidant stabilizer composition is 100: (0.5 to 1.0);
the mass ratio of the hindered phenol antioxidant to the phosphite antioxidant to the thioester antioxidant to the acid absorber is 1: (0.3-0.8): (0.2-0.4): (0.2 to 0.4);
2. the polypropylene tube material according to claim 1, wherein the acid absorber is selected from one or both of an organocalcium compound and an organozinc compound.
3. The polypropylene tube material according to claim 2, wherein the organocalcium compound is selected from the group consisting of calcium stearate.
4. The polypropylene tube material according to claim 2, wherein the organozinc compound is selected from zinc stearate.
5. The method for preparing a polypropylene pipe material according to claim 1, comprising the steps of:
mixing polypropylene and an antioxidant stabilizer composition to obtain a mixture;
and extruding and granulating the mixture in a double-screw extruder to obtain the polypropylene pipe material.
6. The preparation method according to claim 5, wherein the temperature of the first zone of the twin-screw extruder is 210-230 ℃, the temperature of the second zone is 220-240 ℃, the temperature of the third zone is 230-250 ℃, the temperature of the fourth zone is 230-250 ℃, the temperature of the fifth zone is 220-240 ℃, the temperature of the machine head is 210-230 ℃, and the temperature of the melt is 220-240 ℃; the melt pressure is 0.1-0.2 MPa, the host current is 5.0-6.0A, the host rotating speed is 15-25 r/min, and the main feeding is 15-20 r/min.
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| CN106471049A (en) * | 2014-05-01 | 2017-03-01 | 塞特工业公司 | Resist the stable compositionss of ultraviolet light and thermal degradation for stabilization material |
| CN110423397A (en) * | 2019-08-29 | 2019-11-08 | 山东三丰新材料有限公司 | A kind of antioxidative stabilizer composition and its application in polyethylene coating materials |
| WO2022115578A1 (en) * | 2020-11-27 | 2022-06-02 | Cytec Industries Inc. | Compositions and methods for protecting organic polymeric materials from the deleterious effects exposure to uv-c light |
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| CN106471049A (en) * | 2014-05-01 | 2017-03-01 | 塞特工业公司 | Resist the stable compositionss of ultraviolet light and thermal degradation for stabilization material |
| CN110423397A (en) * | 2019-08-29 | 2019-11-08 | 山东三丰新材料有限公司 | A kind of antioxidative stabilizer composition and its application in polyethylene coating materials |
| WO2022115578A1 (en) * | 2020-11-27 | 2022-06-02 | Cytec Industries Inc. | Compositions and methods for protecting organic polymeric materials from the deleterious effects exposure to uv-c light |
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| 不同种类塑料添加剂对聚丙烯加工稳定性的影响;付建英;赵伟;张珍一;;塑料助剂(第06期);全文 * |
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