CN116789991A - Pearlescent master batch material, and preparation method and application thereof - Google Patents
Pearlescent master batch material, and preparation method and application thereof Download PDFInfo
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- CN116789991A CN116789991A CN202210264950.XA CN202210264950A CN116789991A CN 116789991 A CN116789991 A CN 116789991A CN 202210264950 A CN202210264950 A CN 202210264950A CN 116789991 A CN116789991 A CN 116789991A
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- 239000000463 material Substances 0.000 title claims abstract description 44
- 239000004594 Masterbatch (MB) Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 62
- 239000004743 Polypropylene Substances 0.000 claims abstract description 31
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 31
- -1 polypropylene Polymers 0.000 claims abstract description 22
- 239000004094 surface-active agent Substances 0.000 claims abstract description 22
- 238000002844 melting Methods 0.000 claims abstract description 21
- 229920001155 polypropylene Polymers 0.000 claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229920005629 polypropylene homopolymer Polymers 0.000 claims abstract description 7
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 5
- 229930195729 fatty acid Natural products 0.000 claims abstract description 5
- 239000000194 fatty acid Substances 0.000 claims abstract description 5
- 150000003014 phosphoric acid esters Chemical class 0.000 claims abstract description 3
- 230000008018 melting Effects 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 12
- 239000003963 antioxidant agent Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000006057 Non-nutritive feed additive Substances 0.000 claims description 6
- 230000003078 antioxidant effect Effects 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 6
- 239000005022 packaging material Substances 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 3
- 230000003712 anti-aging effect Effects 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 125000005313 fatty acid group Chemical group 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 230000000052 comparative effect Effects 0.000 description 13
- 238000005187 foaming Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 11
- 239000011347 resin Substances 0.000 description 9
- 229920005989 resin Polymers 0.000 description 9
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 8
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- UKMSUNONTOPOIO-UHFFFAOYSA-N docosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCC(O)=O UKMSUNONTOPOIO-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 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 3
- 235000021355 Stearic acid Nutrition 0.000 description 3
- 239000012792 core layer Substances 0.000 description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000008117 stearic acid Substances 0.000 description 3
- XYXJKPCGSGVSBO-UHFFFAOYSA-N 1,3,5-tris[(4-tert-butyl-3-hydroxy-2,6-dimethylphenyl)methyl]-1,3,5-triazinane-2,4,6-trione Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C)=C1CN1C(=O)N(CC=2C(=C(O)C(=CC=2C)C(C)(C)C)C)C(=O)N(CC=2C(=C(O)C(=CC=2C)C(C)(C)C)C)C1=O XYXJKPCGSGVSBO-UHFFFAOYSA-N 0.000 description 2
- 235000021357 Behenic acid Nutrition 0.000 description 2
- 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
- 230000003213 activating effect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229940116226 behenic acid Drugs 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000012767 functional filler Substances 0.000 description 2
- 239000011796 hollow space material Substances 0.000 description 2
- VKOBVWXKNCXXDE-UHFFFAOYSA-N icosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCC(O)=O VKOBVWXKNCXXDE-UHFFFAOYSA-N 0.000 description 2
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- WBIQQQGBSDOWNP-UHFFFAOYSA-N 2-dodecylbenzenesulfonic acid Chemical compound CCCCCCCCCCCCC1=CC=CC=C1S(O)(=O)=O WBIQQQGBSDOWNP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229940060296 dodecylbenzenesulfonic acid Drugs 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- UHGIMQLJWRAPLT-UHFFFAOYSA-N octadecyl dihydrogen phosphate Chemical compound CCCCCCCCCCCCCCCCCCOP(O)(O)=O UHGIMQLJWRAPLT-UHFFFAOYSA-N 0.000 description 1
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 1
- 229920001983 poloxamer Polymers 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 102220040412 rs587778307 Human genes 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention discloses a pearlescent master batch material, a preparation method and application thereof, wherein the pearlescent master batch material comprises the following components in parts by weight: 18-38 parts of homo-polypropylene; 1-5 parts of low-melting polypropylene; 60-75 parts of calcium carbonate; 1-5 parts of a surfactant; the surfactant is one or more of long carbon chain fatty acid, long carbon chain esters or phosphate esters. The pearlescent master batch material provided by the invention is used in a film, not only has good pearlescent effect, but also does not influence the density or tensile and other mechanical properties of the film.
Description
Technical Field
The invention relates to the technical field of packaging materials, in particular to a pearlescent master batch material, a preparation method and application thereof.
Background
The white BOPP pearlescent film has the excellent characteristics of softness, good pearl luster, low density, excellent flatness and the like, and is widely applied to products such as food packaging, gift packaging, facial masks and the like. The BOPP film is prepared by blending and extruding the pearlescent master batch and the polypropylene main material and then biaxially stretching the mixture by tape casting, wherein the pearlescent effect is mainly that the functional filler and the polypropylene form countless tiny holes in the core layer of the film in the stretching process, and when light enters the holes, the pearlescent effect is formed due to reflection and interference of the light. The addition of the functional filler also improves the covering performance of the film and greatly reduces the production cost of the film.
With the continuous improvement of the domestic BOPP productivity, the problem of surplus productivity is more and more prominent, and the competition of BOPP films is also heated to be white, so that a plurality of manufacturers are searching for a system with higher cost performance so as to produce low-cost and excellent film products. At present, manufacturers seek to increase the content of the added pearlescent master batch as much as possible on the premise of unchanged thickness and unchanged density of the produced film, because the higher the adding proportion of the pearlescent master batch in the BOPP pearlescent film system is, the more excellent the pearlescent effect and the light shielding performance are, and the lower the cost is. However, at the same time, the larger the amount of the pearlescent master batch added, the defects such as too low film density and insufficient mechanical strength are also generated. Therefore, how to increase the addition amount of the pearlescent master batch without affecting the properties such as film density is a technical problem to be solved.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a pearlescent master batch material, and a preparation method and application thereof. The pearlescent master batch material provided by the invention can be used in a biaxially oriented film, and the pearlescent effect and the shading performance of the film become more excellent along with the improvement of the adding proportion of the pearlescent master batch, but the density or the tensile and other mechanical properties of the film are not affected.
The method is realized by the following technical scheme:
the pearlescent master batch material comprises the following components in parts by weight:
the surfactant is one or more of long carbon chain fatty acid, long carbon chain esters or phosphate esters.
Preferably, the composition comprises the following components in parts by weight:
further, the surfactant is a fatty acid with a carbon chain length of 18 or more. Preferably, the surfactant is one or more of stearic acid, arachidic acid or behenic acid.
The compatibility of the homo-polypropylene and the calcium carbonate is related to the crystallization performance of the homo-polypropylene, and the low melting point polypropylene is introduced, so that the polypropylene can realize low melting point because of more amorphous areas, the content of the amorphous areas is increased in the system, and the foaming efficiency is reduced; the calcium carbonate is incompatible with the polypropylene, the incompatibility can lead to the enlargement of the hollow space of the material after the stretching process, the long carbon chain is formed on the surface of the calcium carbonate modified by the surfactant, the compatibility of the calcium carbonate and the polypropylene is improved, the compatibility is improved, the fewer the hollow space of the film interface is, the foaming efficiency is reduced, therefore, the addition amount of the pearlescent master batch in the BOPP film can be improved, the addition amount of the pearlescent master batch is increased, the better the covering performance of the film is, the pearlescent effect is finer and finer, and the cost of the material is reduced.
Further, the low-melting polypropylene has a number average molecular weight of 40000-130000 and a melting point of less than 120 ℃.
Preferably, the low melting point polypropylene has a number average molecular weight of 45000-75000 and a melting point of 80-90 ℃. The low-melting polypropylene has a number average molecular weight of 45000-75000, which is helpful for reducing foaming efficiency, and if the low-melting polypropylene has a number average molecular weight too high, it affects the dispersibility of calcium carbonate, resulting in poor dispersibility of calcium carbonate.
Further, the calcium carbonate has a D50 particle diameter of 0.5 to 2. Mu.m, preferably a D50 particle diameter of 1 to 1.4. Mu.m. D50 is the particle diameter at which the cumulative distribution of particles is 50%, and D50 is also known as the average particle diameter or median diameter. The particle size of the calcium carbonate is related to the foaming efficiency, and the smaller the particle size is, the lower the foaming efficiency is; on the other hand, however, the smaller the particle size of calcium carbonate, the poorer the dispersion property thereof, and the breakage of the material occurs when the material is subjected to stretching.
Further, the melt index of the homo-polypropylene is 1-30g/10min, preferably 3g/10min at 230 ℃/2.16 kg.
Further, 0.1 to 0.3 part of processing aid is included. The processing aid is one or more antioxidants.
Further, the antioxidant is selected from one or more of antioxidant 1010 (pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate), antioxidant 168 (tris (2, 4-di-tert-butylphenyl) phosphite), antioxidant 1790 (1, 3, 5-tris (4-tert-butyl-3-hydroxy-2, 6-dimethylbenzyl) -1,3, 5-triazine-2, 4,6- (1 h,3h,5 h) -trione) or antioxidant 412S (pentaerythritol tetra-3-laurylthiopropionate).
The invention also provides a preparation method of the pearlescent master batch material, which comprises the following steps:
s1, weighing the components according to the proportion, firstly mixing calcium carbonate and a surfactant, then adding the rest components for continuous mixing to obtain a premix;
s2: and (3) putting the premix in the step (S1) into an extruder, carrying out melt blending, extruding and granulating to obtain the pearlescent master batch material.
Further, the extruder is a twin screw extruder having a screw aspect ratio of (44-56): 1, the temperature of a screw cylinder of the double-screw extruder is 210-240 ℃, and the screw rotating speed of the double-screw extruder is 300-800r/min.
The invention also provides application of the pearlescent master batch material in preparing packaging materials, such as food packaging and the like.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses a pearlescent master batch material, which is prepared by activating and modifying calcium carbonate by using a specific surfactant, so that the compatibility of the calcium carbonate and polypropylene is greatly improved, and the foaming efficiency of the pearlescent master batch material is greatly reduced. The foaming efficiency is reduced, so that the addition amount of the pearlescent master batch material in the BOPP pearlescent film is greatly increased, the covering performance of the film is improved, the cost of the material is reduced, and the density and mechanical property of the material are not affected.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
According to research, the compatibility of the homo-polypropylene and calcium carbonate is related to the crystallization property of the homo-polypropylene, and low-melting polypropylene is introduced to increase the amorphous region content, so that the foaming efficiency is reduced; the high-mixing process is adopted to coat the surfactant with more long carbon chains on the surface of the calcium carbonate in advance to form the calcium carbonate with the long carbon chains on the surface, so that the calcium carbonate has better compatibility with the polypropylene resin, the stretching pore-forming condition caused by incompatibility is greatly reduced, and the foaming degree is reduced.
< preparation of examples and comparative examples >
The raw materials used in the examples and comparative examples of the present invention are all commercially available, but are not limited to these materials:
the melt index of the homopolymerized PP resin A is 3g/10min at 230 ℃/2.16kg, and the brand PP resin A is PP T30S, and is purchased from China petrochemical group company;
the melt index of the homopolymerized PP resin B is 10g/10min at 230 ℃/2.16kg, and the brand PP HP500N is purchased from China petrochemical company;
the low melting point PP resin A has a number average molecular weight of 45000, a melting point of 82 ℃, a brand S400, available from Nippon Kaiki Kaisha;
the low melting point PP resin B has a number average molecular weight of 75000, a melting point of 84 ℃, and a brand number S600, which is purchased from Nippon Kaiki Kaisha;
the low melting point PP resin C has a number average molecular weight of 130000, a melting point of 90 ℃, and a brand number S901, which is purchased from Nippon Kaiki Kaisha;
calcium carbonate a, d50=0.5 μm, brand carbal S, purchased from england porcelain;
calcium carbonate B, d50=1.0 μm, brand XL6000, available from guangdong xianglong technologies limited;
calcium carbonate C, d50=1.4 μm, brand XL2800, available from guangdong, technology limited;
calcium carbonate D, d50=2.0 μm, brand XL2500, available from guangdong, technology limited;
calcium carbonate E, d50=0.2 μm, brand XL10000, available from guangdong, technology limited;
calcium carbonate F, d50=3.0 μm, brand XL1500, available from guangdong, technology limited;
surfactant A, stearic acid, brand stearic acid 1865, available from Takex brown chemical Co., ltd;
surfactant B, octadecyl monoglyceride, available from alaa Ding Shiji limited;
surfactant C, octadecyl phosphate, available from wuhan pluronic biotechnology limited;
surfactant D, behenic acid, available from ala Ding Shiji limited;
surfactant E, dodecylbenzenesulfonic acid, available from Wohamikacin biomedical technologies Co., ltd;
the antioxidant, the antioxidant 1010 and the antioxidant 168 (1:1) are compounded and sold in the market, and the same antioxidant commercial product is used in parallel experiments;
anti-aging agents, commercially available.
The preparation methods of the examples and comparative examples of the present invention are as follows:
s1, weighing the components according to the proportion of the table 1 and the table 3, then placing calcium carbonate into a heatable high-speed mixer, controlling the temperature of the high-speed mixer to be 80-150 ℃ through heating equipment, pouring a surfactant into the high-speed mixer, wherein the rotating speed of the high-speed mixer is more than 600rpm, the mixing time is more than 5min, mixing the calcium carbonate and the surfactant to the temperature of more than 100 ℃, adding processing aids such as an antioxidant if the processing aids exist in the formula, and mixing for 3min; adding the homopolymerized PP resin and the low-melting-point PP resin through a feeding scale to obtain a premix;
s2: and (3) putting the premix in the step (S1) into a double-screw extruder, carrying out melt blending, extruding and granulating to obtain the pearlescent master batch material.
The twin-screw extruder had a screw aspect ratio of 44:1, the screw cylinder temperature of the double-screw extruder is 240 ℃, and the screw rotating speed of the double-screw extruder is 400r/min.
In the present specification, "parts" means "parts by weight" unless specifically stated otherwise.
< test Standard >
The performance test methods of the respective examples and comparative examples of the present invention are as follows:
the three-layer casting machine is used, the surface layer material is homo-polymerized PP with the melt index of 3g/10min, the pearlescent master batch material is used as a core layer additive to be mixed and added with the homo-polymerized PP, in order to compare the foaming effect of different pearlescent master batches, all the pearlescent master batches are added according to 30 percent, the processing temperature of each layer of the three-layer casting machine is 210-250 ℃, the film is longitudinally stretched after being molded, the temperature of a stretching roller is set to 130-135 ℃, the stretching ratio of the film is 5 times, the rotating speed is regulated to ensure that the thickness of the stretched film is about 50um, and the density of the film is tested by using the film sample through weight and thickness.
TABLE 1 EXAMPLES 1 to 13 formulations
TABLE 2 Performance test results for examples 1-13
Grading production conditions:
marking that the film breakage occurs in the production process as unqualified; the production of 1000 meters of continuous film is qualified, the production of 3000 meters of continuous film is moderate, and the production of 5000 meters of continuous film is good.
TABLE 3 formulation of comparative examples 1-5
TABLE 4 Performance test results for comparative examples 1-5
It is generally desirable that the stretched film has a density of greater than 0.75 and is stable and acceptable in production, more preferably a density in the range of 0.8 to 0.87g/cm 3 And the film breakage does not occur in the production process, wherein the higher the density is, the better the effect is under the condition of ensuring the stable production.
From the data of the examples, it can be seen that the compatibility of calcium carbonate with polypropylene can be greatly improved by activating and modifying calcium carbonate with a specific surfactant, so that the foaming efficiency of the pearlescent master batch material is greatly reduced. The foaming efficiency is reduced, so that the addition amount of the pearlescent master batch material in the BOPP pearlescent film is greatly improved, and in the invention, the addition amount of the pearlescent master batch can reach 30%, the covering performance of the film is improved, and the cost of the material is reduced. But does not cause the problem of reduced film density and tensile strength due to the addition of a large amount of pearlescent master batch.
Comparative example 1 compared with example 1, since comparative example 1 does not use a surfactant, the density of the film prepared by comparative example 1 is reduced, film breakage easily occurs during stretching, and the tensile strength is poor; comparative example 2 compared to example 1, the density was also reduced and film breakage was likely to occur during stretching without using the surfactant specified in the present invention; comparative example 3, compared with example 1, has no addition of low melting point polypropylene, and the density is reduced although the production process is stable; comparative example 4 the calcium carbonate had too small particle size compared with example 1, resulting in deterioration of dispersibility, breakage of the material during stretching, and reduction of the density of the material after stretching. Comparative example 5 the too small particle size of calcium carbonate compared with example 1 resulted in a serious decrease in the density of the film.
Example 14
The method comprises the steps of using a three-layer casting machine, using homo-PP with a melt index of 3g/10min as a surface layer material, mixing and adding the homo-PP as a core layer additive, adding the pearl master batch according to 30wt% of the pearl master batch, carrying out longitudinal stretching after film forming by the three-layer casting machine at the processing temperature of 210-250 ℃, setting the stretching roller temperature of 130-135 ℃ and the film stretching ratio of 5 times, adjusting the rotating speed to ensure that the thickness of the stretched film is about 50um, and testing the density of the film sample by weight and thickness. And (3) measuring: the density is 0.820, the production condition is stable, and the phenomenon of stretch breaking does not occur. Therefore, the pearlescent master batch material provided by the invention can be suitable for preparing packaging materials with high requirements on the mechanical properties such as pearlescent effect, density and stretching.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The pearlescent master batch material is characterized by comprising the following components in parts by weight:
the surfactant is one or more of long carbon chain fatty acid, long carbon chain esters or phosphate esters.
2. The pearlescent masterbatch material according to claim 1, comprising the following components in parts by weight:
the surfactant is fatty acid with carbon chain length of more than 18.
3. The pearlescent masterbatch material of claim 1 or 2, wherein the low melting point polypropylene has a number average molecular weight of 40000-130000 and a melting point of less than 120 ℃.
4. A pearlescent masterbatch material according to claim 3, wherein the low melting point polypropylene has a molecular weight of 45000-75000 and a melting point of 80-90 ℃.
5. The pearlescent masterbatch material according to claim 1 or 2, wherein the calcium carbonate has a D50 particle size of 0.5-2 μm, preferably a D50 particle size of 1-1.4 μm.
6. The pearlescent masterbatch material according to claim 1 or 2, wherein the melt index of the homo-polypropylene is 1-30g/10min, preferably 2-5g/10min at 230 ℃/2.16 kg.
7. The pearlescent masterbatch material of claim 1 or 2, further comprising 0.1-0.3 parts of a processing aid.
8. The pearlescent masterbatch material of claim 7, wherein the processing aid is one or more of an antioxidant or an anti-aging agent.
9. A method for preparing a pearlescent masterbatch material according to any one of claims 1-8 comprising the steps of:
s1: weighing the components according to the proportion, firstly mixing calcium carbonate and a surfactant, then adding the rest components for continuous mixing to obtain a premix;
s2: and (3) putting the premix in the step (S1) into an extruder, carrying out melt blending, extruding and granulating to obtain the pearlescent master batch material.
10. Use of the pearlescent masterbatch material according to any one of claims 1-8 for the preparation of packaging materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210264950.XA CN116789991A (en) | 2022-03-17 | 2022-03-17 | Pearlescent master batch material, and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210264950.XA CN116789991A (en) | 2022-03-17 | 2022-03-17 | Pearlescent master batch material, and preparation method and application thereof |
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| Publication Number | Publication Date |
|---|---|
| CN116789991A true CN116789991A (en) | 2023-09-22 |
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| CN202210264950.XA Pending CN116789991A (en) | 2022-03-17 | 2022-03-17 | Pearlescent master batch material, and preparation method and application thereof |
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| Country | Link |
|---|---|
| CN (1) | CN116789991A (en) |
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- 2022-03-17 CN CN202210264950.XA patent/CN116789991A/en active Pending
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