CN113698704A - Extinction master batch for PP (polypropylene) film and preparation method thereof - Google Patents
Extinction master batch for PP (polypropylene) film and preparation method thereof Download PDFInfo
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- CN113698704A CN113698704A CN202111075456.0A CN202111075456A CN113698704A CN 113698704 A CN113698704 A CN 113698704A CN 202111075456 A CN202111075456 A CN 202111075456A CN 113698704 A CN113698704 A CN 113698704A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/14—Copolymers of propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention belongs to the technical field of master batch films and preparation thereof, and particularly relates to a delustering master batch for a PP film and a preparation method thereof. With the increase of the dosage of LLDPE, the spherulite of PP is further reduced, the PP crystal is divided into crushed crystals, and when the interface between the crystals completely disappears, the PP and the LLDPE are mixed together, so that the impact strength of the formula-modified system is high and is not easy to break, the addition of LLDPE refines the spherulite of PP, and the connection between the crystals is increased.
Description
Technical Field
The invention belongs to the technical field of master batch films and preparation thereof, and particularly relates to an extinction master batch for a PP film and a preparation method thereof.
Background
Extinction is typically achieved by scattering light, which has two ways: the surface of the product is scattered to be extinction, and the scattering from the reinforced product body is extinction. The surface scattering is realized by improving the surface roughness of the product, the bulk extinction is caused by optical nonuniformity in the substance, the optical nonuniformity is generated by particles or molecules and atoms in the substance and has close relation with the physical properties of the material, wherein the most critical factor is the refractive index difference among all micro-regions in the product.
In the prior art, inorganic fillers such as silica, wollastonite, talcum powder, mica powder or calcium carbonate are usually added into a master batch, and the inorganic fillers protrude out of the surface of a master batch product after molding to form an uneven micro shape, so that the master batch shows an extinction effect. However, the method has limitations, and the inorganic filler is often coated in the master batch processing process, so that the shock resistance of the master batch is low, and the extinction master batch for the impact-resistant PP film is developed to meet the current industrial requirements.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a delustering master batch for a PP film and a preparation method thereof. The invention specifically comprises the following contents:
the invention provides a delustering master batch for a PP film, which is characterized by comprising the following steps: the extinction master batch for the PP film comprises, by weight, 29-70 parts of polypropylene, 15-65 parts of linear low-density polyethylene, 15-25 parts of silica-based filling material, 0.1-1.5 parts of processing aid and 0.5-2.5 parts of surfactant.
In some embodiments of the present invention, the polypropylene in the formulation system of the matte master batch for PP films is at least one of homo-polypropylene and co-polypropylene, and the melt flow rate of the polypropylene is 3.0-12.5g/10 min.
In some embodiments of the present disclosure, the polypropylene copolymer is at least one of a binary polypropylene copolymer and a ternary polypropylene copolymer.
In a further embodiment of the present invention, the linear low density polyethylene has a melt flow rate of 0.2 to 5.0g/10min in the formulation of the matting masterbatch for PP films described above.
In some embodiments of the present invention, the silica-based filler in the formulation system of the matting master batch for PP films is at least one of silica, talc, wollastonite, kaolin, and mica powder.
In some embodiments of the present invention, the mesh number of the silica-based filler in the formulation system of the matting master batch for PP film is 800-1000 mesh.
In some embodiments of the present invention, the processing aid in the formulation system of the matting master batch for PP films is at least one of an ester processing aid and a stearate processing aid.
In a further embodiment of the present invention, the surfactant in the formulation system of the matting master batch for PP films is at least one of stearic acid surfactant, silane coupling agent surfactant, titanate coupling agent surfactant and aluminate coupling agent surfactant.
The second purpose of the invention is to provide a preparation method of the extinction master batch for the PP film, which has the technical points that: the method comprises the following steps:
step one, placing the silicon dioxide filling material in a surfactant, and mixing at the temperature of 110 ℃ and the rotating speed of 800rmp for 15-30min to obtain a uniformly mixed material;
step two, mixing polypropylene, linear low-density polyethylene, processing aids and the silicon dioxide filling material treated in the step one for 5-10min at 25-35 ℃ and at the rotating speed of 50-100rmp to obtain a mixed material;
and step three, extruding and granulating the mixed material in the step two in a double-screw extruder at the temperature of 180-220 ℃ to obtain the extinction master batch for the PP film.
Compared with the prior art, the extinction master batch for the PP film and the preparation method thereof have the beneficial effects that:
the extinction master batch for the PP film comprises polypropylene, linear low-density polyethylene, a silica series filling material, a processing aid and a surfactant, adopts a resin system consisting of polypropylene (PP) and linear low-density polyethylene (LLDPE), and reduces the spherulite size of the PP due to the addition of the LLDPE in the mixing of a double-screw extruder, so that the interface between crystals becomes fuzzy, and the impact property of the material is improved. With the increase of the dosage of LLDPE, the spherulite of PP is further reduced, the PP crystal is divided into crushed crystals, and when the interface between the crystals completely disappears, the PP and the LLDPE are mixed together, so that the impact strength of the formula-modified system is high and is not easy to break, the addition of LLDPE refines the spherulite of PP, and the connection between the crystals is increased.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer.
Example 1
The matting master batch for PP films of the present embodiment includes:
59.8g of homopolypropylene, having a melt flow rate of 3.0-12.5g/10 min;
25g of linear low density polyethylene having a melt flow rate of 0.2 to 5.0g/10 min;
15g of 800-1000 mesh silica;
0.2g of zinc stearate;
1.0g of a silane coupling agent-type surfactant.
Example 2
The matting master batch for PP films of the present embodiment includes:
29.5g of binary copolymerized polypropylene, the melt flow rate of which is 3.0-12.5g/10 min;
45g of linear low density polyethylene having a melt flow rate of 0.2 to 5.0g/10 min;
25g of 800-1000 mesh silica;
0.1g of calcium stearate;
2.5g of an aluminate coupling agent type surfactant.
Example 3
The matting master batch for PP films of the present embodiment includes:
39.5g of terpolymer polypropylene, the melt flow rate of which is 3.0-12.5g/10 min;
40g of linear low density polyethylene having a melt flow rate of 0.2 to 5.0g/10 min;
20g of 800-1000 meshes of talcum powder;
0.2g of glyceryl monostearate;
1.8g of a silane coupling agent-type surfactant.
Example 4
The matting master batch for PP films of the present embodiment includes:
39.7g of homo-polypropylene having a melt flow rate of 3.0-12.5g/10 min;
45g of linear low density polyethylene having a melt flow rate of 0.2 to 5.0g/10 min;
15g of 800-1000 meshes of talcum powder;
0.3g of zinc stearate;
1.5g of a titanate coupling agent type surfactant.
Example 5
According to the formulations of examples 1 to 4, the process for preparing a mattifying masterbatch for PP films comprises the following steps:
step one, placing the silicon dioxide filling material in a surfactant, and mixing at the temperature of 110 ℃ and the rotating speed of 800rmp for 15-30min to obtain a uniformly mixed material;
step two, mixing polypropylene, linear low-density polyethylene, processing aids and the silicon dioxide filling material treated in the step one for 5-10min at 25-35 ℃ and at the rotating speed of 50-100rmp to obtain a mixed material;
and step three, extruding and granulating the mixed material in the step two in a double-screw extruder at the temperature of 180-220 ℃ to obtain the extinction master batch for the PP film.
Test examples
PP films prepared according to the formulations of examples 1 to 4 and the method of example 5 were blown with a matting master batch, the gloss of the films was measured using a gloss meter, and the impact strength was measured according to ASTM D-256, having the following Table 1:
TABLE 1
| Example 1 | Example 2 | Example 3 | Example 4 | |
| Degree of gloss | 6.7 | 4.2 | 5.1 | 4.8 |
| Impact Strength (J/m) | 850 | 840 | 880 | 830 |
As can be seen from Table 1, the gloss of the film obtained from the extinction master batch for the PP film obtained by the method is less than 6.7, the gloss is low, the extinction property of the film is good, the impact strength is greater than 830J/m, and the impact strength is good.
While particular embodiments of the present invention have been illustrated and described, it would be obvious that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.
Claims (9)
1. The extinction master batch for the PP film is characterized in that: the extinction master batch for the PP film comprises, by weight, 29-70 parts of polypropylene, 15-65 parts of linear low-density polyethylene, 15-25 parts of silica-based filling material, 0.1-1.5 parts of processing aid and 0.5-2.5 parts of surfactant.
2. The matted master batch for PP film according to claim 1, wherein: the polypropylene is at least one of homo-polypropylene and co-polypropylene, and the melt flow rate of the polypropylene is 3.0-12.5g/10 min.
3. The matted master batch for PP film according to claim 2, wherein: the copolymerized polypropylene is at least one of binary copolymerized polypropylene and ternary copolymerized polypropylene.
4. The matted master batch for PP film according to claim 1, wherein: the linear low density polyethylene has a melt flow rate of 0.2 to 5.0g/10 min.
5. The matted master batch for PP film according to claim 1, wherein: the silica series filling material is at least one of silica, talcum powder, wollastonite, kaolin and mica powder.
6. The matted master batch for PP film according to claim 1, wherein: the mesh number of the silicon dioxide filling material is 800-1000 meshes.
7. The matted master batch for PP film according to claim 1, wherein: the processing aid is at least one of an ester processing aid and a stearic acid salt processing aid.
8. The matted master batch for PP film according to claim 1, wherein: the surfactant is at least one of stearic acid surfactant, silane coupling agent surfactant, titanate coupling agent surfactant and aluminate coupling agent surfactant.
9. A preparation method of a delustering master batch for a PP film is characterized by comprising the following steps: the method comprises the following steps:
step one, placing the silicon dioxide filling material in a surfactant, and mixing at the temperature of 110 ℃ and the rotating speed of 800rmp for 15-30min to obtain a uniformly mixed material;
step two, mixing polypropylene, linear low-density polyethylene, processing aids and the silicon dioxide filling material treated in the step one for 5-10min at 25-35 ℃ and at the rotating speed of 50-100rmp to obtain a mixed material;
and step three, extruding and granulating the mixed material in the step two in a double-screw extruder at the temperature of 180-220 ℃ to obtain the extinction master batch for the PP film.
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| CN202111075456.0A CN113698704A (en) | 2021-09-14 | 2021-09-14 | Extinction master batch for PP (polypropylene) film and preparation method thereof |
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| CN202111075456.0A CN113698704A (en) | 2021-09-14 | 2021-09-14 | Extinction master batch for PP (polypropylene) film and preparation method thereof |
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| CN101121799A (en) * | 2006-08-11 | 2008-02-13 | 广州市波斯塑胶颜料有限公司 | Low-luster polypropylene blending modified material and preparation method thereof |
| CN101768392A (en) * | 2008-12-30 | 2010-07-07 | 张明亮 | Polar modified polymer material |
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2021
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