CN114644791B - High-transparency modified polyolefin material and preparation process and application thereof - Google Patents
High-transparency modified polyolefin material and preparation process and application thereof Download PDFInfo
- Publication number
- CN114644791B CN114644791B CN202110345432.6A CN202110345432A CN114644791B CN 114644791 B CN114644791 B CN 114644791B CN 202110345432 A CN202110345432 A CN 202110345432A CN 114644791 B CN114644791 B CN 114644791B
- Authority
- CN
- China
- Prior art keywords
- polyolefin
- modified
- cycloolefin copolymer
- polypropylene
- linear low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/04—Polymer mixtures characterised by other features containing interpenetrating networks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of polyolefin materials, in particular to a high-transparency modified polyolefin material and a preparation process and application thereof. The high-transparency modified polyolefin material is prepared from polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent. The modified cycloolefin copolymer prepared by using the specific cycloolefin copolymer, the linear low-density polyethylene and the polyolefin elastomer can not only increase the transparency of the modified polyolefin material, but also improve the defect of high system rigidity caused by a cyclic structure.
Description
Technical Field
The invention relates to the technical field of polyolefin materials, in particular to a high-transparency modified polyolefin material and a preparation process and application thereof.
Background
Polyolefin materials are materials based on polymers obtained by polymerizing or copolymerizing one or more olefins, and polyolefin materials have been widely used in daily life and industry, for example, in insulating materials, rubber and plastic products, molds, signs, packaging, transportation, etc. because of their advantages such as abundant raw materials, low cost, easy processing and molding, and in recent years, polyolefin materials have been used in solar back sheets.
The transparent material is a material with excellent optical permeability, the traditional transparent material is mainly inorganic glass, and with the continuous development of the high polymer material, the transparent high polymer material continuously replaces common inorganic glass, and compared with the glass material, the transparent high polymer material has higher toughness, lower operating temperature and lighter weight. The most widely used transparent polymer materials at present are methyl methacrylate, polystyrene and polycarbonate, but the components made of the materials are unstable and have poor ageing resistance and low temperature resistance.
Therefore, it is necessary to prepare a highly transparent modified polyolefin material, and to prepare a material having transparency, aging resistance and low temperature resistance using the same.
Disclosure of Invention
In order to solve the technical problems, the first aspect of the invention provides a high-transparency modified polyolefin material, which is prepared from polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent.
As a preferred embodiment of the present invention, the polyolefin includes polypropylene and linear low density polyethylene.
As a preferred embodiment of the present invention, the polypropylene has a molecular weight distribution index of 1.5 to 4.
As a preferred technical scheme of the invention, the melt index of the linear low density polyethylene at 190 ℃/2.16kg is 4-8g/10min.
As a preferable technical scheme of the invention, the preparation raw materials of the modified cycloolefin copolymer comprise cycloolefin copolymer, linear low density polyethylene and polyolefin elastomer, and the weight ratio of the modified cycloolefin copolymer to the linear low density polyethylene is (70-80): (10-15): (10-15).
As a preferred embodiment of the present invention, the cycloolefin copolymer has a volume flow index of 2 to 6ml/10min.
As a preferable technical scheme of the invention, the polyolefin elastomer is polyethylene octene co-elastomer.
The second aspect of the present invention provides a process for preparing a highly transparent modified polyolefin material, comprising the steps of:
(1) Weighing corresponding polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent, stirring and mixing to obtain a premix;
(2) And (3) conveying the premix in the step (1) to a double-screw extruder, and carrying out melt granulation to obtain the high-transparency modified polyolefin material.
In a second aspect, the present invention provides the use of a highly transparent modified polyolefin material, the use of a highly transparent modified polyolefin material comprising: used for preparing single-layer or multi-layer composite backboard.
As a preferable technical scheme of the invention, the high-transparency modified polyolefin material is extruded by a rectangular mouth die after being melted and plasticized by a backboard sheet extruder to obtain a sheet melt, and the sheet melt is cooled and shaped by a cooling roller and rolled to obtain the single-layer solar backboard.
The beneficial effects are that:
1. the modified cycloolefin copolymer prepared by using the specific cycloolefin copolymer, the linear low-density polyethylene and the polyolefin elastomer can not only increase the transparency of the modified polyolefin material, but also improve the defect of high system rigidity caused by a cyclic structure;
2. the modified polyolefin material and the linear low-density polyethylene cooperate to realize the insertion of polypropylene spherulites to a certain extent, so that the transparency of polypropylene is influenced, the transparency of the modified cycloolefin copolymer can be brought into play, and the transparency of the modified polyolefin material is further increased;
3. the interaction among the components of the invention can form an interpenetrating network structure, and the higher-temperature aging property and the boiling aging property are improved by a more compact structure.
Detailed Description
The disclosure of the present invention will be further understood in conjunction with the following detailed description of the preferred embodiments of the invention, including examples. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. If the definition of a particular term disclosed in the prior art is inconsistent with any definition provided in the present invention, the definition of the term provided in the present invention controls.
As used herein, unless the context clearly indicates otherwise, the absence of a limitation to a plurality of features is also intended to include the plurality of features. It will be further understood that the terms "made of …" and "comprising," "including," "having," "including," and/or "containing," as used herein, are synonymous with "including," "having," "containing," and/or "containing," and when used in this specification, mean the stated composition, step, method, article, or apparatus, but do not preclude the presence or addition of one or more other compositions, steps, methods, articles, or apparatus. Furthermore, when describing embodiments of the present invention, the use of "preferred," "more preferred," etc. refers to embodiments of the present invention that may provide certain benefits in some instances. However, other embodiments may be preferred under the same or other circumstances. In addition, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention.
In order to solve the technical problems, the first aspect of the invention provides a high-transparency modified polyolefin material, which is prepared from polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent.
Polyolefin
In one embodiment, the polyolefin comprises polypropylene and linear low density polyethylene.
Polypropylene
In one embodiment, the polypropylene has a molecular weight distribution index of 1.5 to 4; further preferably 2 to 4; still more preferably 3.8.
In one embodiment, the polypropylene is selected from at least one of block polypropylene, random copolymer polypropylene, homo-polypropylene.
In one embodiment, the polypropylene is a composition of block polypropylene, random copolymer polypropylene, homo-polypropylene, in a weight ratio of (0.1-0.5): 1: (0.2-1.2); further preferably (0.1 to 0.3): 1: (0.5-1); still more preferably 0.2:1:0.8.
the invention uses the block copolymerization polypropylene, the random copolymerization polypropylene and the homopolymerization polypropylene with a certain weight ratio to ensure that the modified polyolefin material has good mechanical strength and the product prepared by using the modified polyolefin material has good cohesiveness.
In one embodiment, the block copolymerized polypropylene is a yankee k6712.
In one embodiment, the random copolymer polypropylene is medium petrochemical M800E.
In one embodiment, the homo-polypropylene is a crape 1300.
Linear low density polyethylene
In one embodiment, the linear low density polyethylene has a melt index of 4 to 8g/10min at 190 ℃/2.16 kg; further preferably 5-6g/10min; still more preferably 5.5g/10min.
In one embodiment, the linear low density polyethylene is ziluting DNDB7149U.
Modified cycloolefin copolymers
In one embodiment, the weight of the modified cyclic olefin copolymer is 10-20% of the weight of the preparation raw material of the high transparent modified polyolefin material; preferably 12-17%; further preferably 14%.
In one embodiment, the modified cycloolefin copolymer is prepared from cycloolefin copolymer, linear low density polyethylene and polyolefin elastomer in a weight ratio of (70-80): (10-15): (10-15); preferably 65:12:13.
in one embodiment, the modified cyclic olefin copolymer is prepared by: blending, melting and extruding the preparation raw materials of the modified cycloolefin copolymer to obtain the modified cycloolefin copolymer.
In one embodiment, the cycloolefin copolymer has a volume flow index of 2 to 6ml/10min (test conditions HDT/B+115 ℃/2.16 kg); further preferably 5ml/10min, in particular cycloolefin copolymer 6017.
In order to improve the high temperature property and the transparency of the modified polyolefin material, the applicant added a certain amount of cycloolefin copolymer, but it was found during the experiment that the addition of cycloolefin copolymer did not have a good effect of improving the transparency of the modified polyolefin material, but rather resulted in a decrease in the toughness of the modified polyolefin material. It is possible that the cyclic structure of the single cycloolefin copolymer increases the rigidity of the system, and that too much polyolefin in the system affects the self-properties of the cycloolefin copolymer to some extent. The applicant has found through a great deal of researches that, firstly, the cycloolefin copolymer with the volume flow index of 2-6ml/10min and the linear low-density polyethylene with the melt index of 4-8g/10min are selected to prepare the modified cycloolefin copolymer, so that the transparency of the modified polyolefin material can be increased, the defect that the rigidity of the system is high due to the cyclic structure can be improved, probably because the polyolefin elastomer increases the compatibility of the cycloolefin copolymer and the linear low-density polyethylene to a certain extent, the melt indexes of the cycloolefin copolymer and the linear low-density polyethylene are similar, and in the processing process, the cyclic structure of a certain proportion and the flexible structure of a molecular chain are mutually influenced, so that the modified cycloolefin copolymer has high temperature resistance and toughness, and also has the transparency, and when the modified cycloolefin copolymer is copolymerized with the polyolefin and the polyolefin elastomer, the modified cycloolefin copolymer again has a certain alkyl carbon chain function, the insertion of polypropylene spherulites can be realized to a certain extent, the transparency of the modified cycloolefin copolymer itself can be further improved, and the transparency of the modified polyolefin material can be further exerted.
Polyolefin elastomer
In one embodiment, the polyolefin elastomer is a polyethylene octene co-elastomer having a melt index (190 ℃,2.16 kg) of 3g/10min, a density of 0.902g/cm3, a Mooney viscosity (ML1+4@121 ℃) of 10, and specifically, USA Dow 8450.
In one embodiment, the mass ratio of polypropylene, linear low density polyethylene, and polyolefin elastomer is 0.8: (1.3-1.5): (0.1-0.3); preferably 0.8:1.4:0.2. the weight of the polyolefin elastomer herein does not include the weight of the polyolefin elastomer from which the modified cycloolefin copolymer is prepared.
The applicant has unexpectedly found during the experiment that when polypropylene and linear low density polyethylene are used, in particular polypropylene with a molecular weight distribution index of 1.5-4 and linear low density polyethylene with a melt index of 4-8g/10min at 190 ℃/2.16kg are used, the processing flowability is good and the retort aging property is improved, but the conditions of high and low temperature aging property and reduced transparency sometimes occur, when further polyethylene octene co-elastomer with a melt index of 3g/10min, a density of 0.902g/cm3 and a mooney viscosity (ML 1+4@121 ℃) of 10 is added, and the mass ratio of polypropylene, linear low density polyethylene and polyethylene octene co-elastomer is controlled to be 0.8: (1.3-1.5): when the temperature is between 0.1 and 0.3, the two components act together, so that the problems are solved, the digestion aging property is further improved, and the reason is probably that the compatibility between polyolefin and polyolefin elastomer is better, on one hand, the linear low-density polyethylene in the system can fully realize the insertion, segmentation and refinement of polypropylene spherulites, the size of the polypropylene crystals is reduced, and the inter-crystal connection is increased; on the other hand, the amorphous ethylene-octene matrix is spliced in a network of fine and uniformly dispersed polyolefin crystals, and has higher transparency due to fine crystal grains and smaller unit cell size than visible light wavelength, and the interaction among the components can form an interpenetrating network structure, so that the ageing property at high and low temperatures and the steaming ageing property are improved due to a more compact structure.
Auxiliary agent
In one embodiment, the weight of the auxiliary agent is 0.5-2% of the weight of the preparation raw material of the high-transparency modified polyolefin material; preferably 0.8-1.5%; further preferably 1.2%.
In one embodiment, the auxiliary agent is an ultraviolet absorber and/or an antioxidant.
In a preferred embodiment, the auxiliary agent is an ultraviolet absorber and an antioxidant, and the weight ratio of the auxiliary agent to the antioxidant is 1: (0.5-0.8); preferably 1:0.72.
the ultraviolet absorber is not limited, and ultraviolet absorbers suitable for use in the polyolefin are all suitable for use in the system of the present invention, and examples of the ultraviolet absorber include benzotriazole-based ultraviolet absorbers (for example, ultraviolet absorber UV-P, ultraviolet absorber UVP-327), hindered amine-based ultraviolet absorbers (for example, light stabilizer HPT), and benzophenone-based ultraviolet absorbers (for example, ultraviolet absorber UV-O, ultraviolet absorber UV-9, ultraviolet absorber UV-531), and the like.
In a preferred embodiment, the ultraviolet absorber is a combination of ultraviolet absorber UV-O and ultraviolet absorber UV-531 in a weight ratio of 1: (0.5-0.8), preferably 1:0.65.
the antioxidant is not limited, and antioxidants suitable for use in the polyolefin are all suitable for use in the system of the present invention, and examples of antioxidants include antioxidant 168, antioxidant 1098, antioxidant 1010, antioxidant 1098, and antioxidant 215, and preferably antioxidant 168.
The second aspect of the invention provides a process for preparing a highly transparent modified polyolefin material, comprising the steps of:
(1) Weighing corresponding polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent, stirring and mixing to obtain a premix;
(2) And (3) conveying the premix in the step (1) to a double-screw extruder, and carrying out melt granulation to obtain the high-transparency modified polyolefin material.
In a third aspect, the present invention provides the use of a highly transparent modified polyolefin material, the use of the highly transparent modified polyolefin material comprising: used for preparing single-layer or multi-layer composite backboard.
In one embodiment, the high-transparency modified polyolefin material is extruded by a backboard sheet extruder through a rectangular mouth die after being melted and plasticized to obtain a sheet melt, and the sheet melt is cooled and shaped by a cooling roller and rolled to obtain the single-layer solar backboard.
In one embodiment, the multilayer composite back sheet comprises an EVA layer, a single layer solar back sheet as described above, a reflective layer.
In one embodiment, a solar cell is comprised of an upper cover sheet, a glue film, a cell sheet, a glue film, and a single layer solar back sheet as described above.
Several specific examples of the present invention are given below, but the present invention is not limited by the examples.
In addition, the raw materials in the present invention are commercially available unless otherwise specified.
Examples
Example 1
The embodiment 1 of the invention provides a high-transparency modified polyolefin material, which is prepared from polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent;
the polyolefin comprises polypropylene and linear low density polyethylene;
the polypropylene has a molecular weight distribution index of 3.5; the polypropylene is a composition of block polypropylene, random copolymer polypropylene and homopolymerized polypropylene, and the weight ratio of the polypropylene to the composition is 0.1:1:0.5; the block copolymerized polypropylene is the Yanshan petrochemical k6712; the random copolymer polypropylene is medium petrochemical M800E; the homo-polypropylene is a Yanshan petrochemical 1300;
the melt index of the linear low density polyethylene is 5.5g/10min at 190 ℃/2.16 kg; the linear low-density polyethylene is Qilu petrochemical DNDB7149U;
the weight of the modified cycloolefin copolymer is 12% of the weight of the preparation raw material of the high-transparency modified polyolefin material; the preparation raw materials of the modified cycloolefin copolymer comprise cycloolefin copolymer, linear low density polyethylene and polyolefin elastomer, and the weight ratio is 70:10:10; the preparation method of the modified cycloolefin copolymer comprises the following steps: blending, melting and extruding the preparation raw materials of the modified cycloolefin copolymer to obtain the modified cycloolefin copolymer; the volume flow index of the cycloolefin copolymer was 5ml/10min (test condition: HDT/B+115 ℃/2.16 kg); specifically cycloolefin copolymer 6017;
the polyolefin elastomer is a polyethylene octene co-elastomer, the melt index (190 ℃ C., 2.16 kg) of the polyolefin elastomer is 3g/10min, the density is 0.902g/cm < 3 >, the Mooney viscosity (ML 1+4@121 ℃) is 10, and the polyolefin elastomer is specifically a American Dow 8450;
the mass ratio of the polypropylene to the linear low density polyethylene to the polyolefin elastomer is 0.8:1.3:0.1;
the weight of the auxiliary agent is 0.8% of the weight of the preparation raw material of the high-transparency modified polyolefin material; the auxiliary agent is an ultraviolet absorber and an antioxidant, and the weight ratio of the auxiliary agent is 1:0.5; the ultraviolet absorber is a composition of an ultraviolet absorber UV-O and an ultraviolet absorber UV-531, and the weight ratio of the ultraviolet absorber UV-O to the ultraviolet absorber UV-531 is 1:0.5; the antioxidant is antioxidant 168;
the preparation of the high-transparency modified polyolefin material comprises the following steps:
(1) Weighing corresponding polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent, stirring and mixing to obtain a premix; (2) And (3) conveying the premix in the step (1) to a double-screw extruder, and carrying out melt granulation to obtain the high-transparency modified polyolefin material.
Example 2
The embodiment 2 of the invention provides a high-transparency modified polyolefin material, which is prepared from polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent;
the polyolefin comprises polypropylene and linear low density polyethylene;
the polypropylene has a molecular weight distribution index of 3.5; the polypropylene is a composition of block polypropylene, random copolymer polypropylene and homopolymerized polypropylene, and the weight ratio of the polypropylene to the composition is 0.3:1:1, a step of; the block copolymerized polypropylene is the Yanshan petrochemical k6712; the random copolymer polypropylene is medium petrochemical M800E; the homo-polypropylene is a Yanshan petrochemical 1300;
the melt index of the linear low density polyethylene is 5.5g/10min at 190 ℃/2.16 kg; the linear low-density polyethylene is Qilu petrochemical DNDB7149U;
the weight of the modified cycloolefin copolymer is 17% of the weight of the preparation raw material of the high-transparency modified polyolefin material; the preparation raw materials of the modified cycloolefin copolymer comprise cycloolefin copolymer, linear low density polyethylene and polyolefin elastomer, and the weight ratio is 80:15:15; the preparation method of the modified cycloolefin copolymer comprises the following steps: blending, melting and extruding the preparation raw materials of the modified cycloolefin copolymer to obtain the modified cycloolefin copolymer; the volume flow index of the cycloolefin copolymer was 5ml/10min (test condition: HDT/B+115 ℃/2.16 kg); specifically cycloolefin copolymer 6017;
the polyolefin elastomer is a polyethylene octene co-elastomer, the melt index (190 ℃ C., 2.16 kg) of the polyolefin elastomer is 3g/10min, the density is 0.902g/cm < 3 >, the Mooney viscosity (ML 1+4@121 ℃) is 10, and the polyolefin elastomer is specifically a American Dow 8450;
the mass ratio of the polypropylene to the linear low density polyethylene to the polyolefin elastomer is 0.8:1.5:0.3;
the weight of the auxiliary agent is 01.5% of the weight of the preparation raw material of the high-transparency modified polyolefin material; the auxiliary agent is an ultraviolet absorber and an antioxidant, and the weight ratio of the auxiliary agent is 1:0.8; the ultraviolet absorber is a composition of an ultraviolet absorber UV-O and an ultraviolet absorber UV-531, and the weight ratio of the ultraviolet absorber UV-O to the ultraviolet absorber UV-531 is 1:0.8; the antioxidant is antioxidant 168;
the preparation of the high-transparency modified polyolefin material comprises the following steps:
(1) Weighing corresponding polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent, stirring and mixing to obtain a premix; (2) And (3) conveying the premix in the step (1) to a double-screw extruder, and carrying out melt granulation to obtain the high-transparency modified polyolefin material.
Example 3
The embodiment 3 of the invention provides a high-transparency modified polyolefin material, which is prepared from polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent;
the polyolefin comprises polypropylene and linear low density polyethylene;
the polypropylene has a molecular weight distribution index of 3.5; the polypropylene is a composition of block polypropylene, random copolymer polypropylene and homopolymerized polypropylene, and the weight ratio of the polypropylene to the composition is 0.2:1:0.8; the block copolymerized polypropylene is the Yanshan petrochemical k6712; the random copolymer polypropylene is medium petrochemical M800E; the homo-polypropylene is a Yanshan petrochemical 1300;
the melt index of the linear low density polyethylene is 5.5g/10min at 190 ℃/2.16 kg; the linear low-density polyethylene is Qilu petrochemical DNDB7149U;
the weight of the modified cycloolefin copolymer is 14% of the weight of the preparation raw material of the high-transparency modified polyolefin material; the preparation raw materials of the modified cycloolefin copolymer comprise cycloolefin copolymer, linear low density polyethylene and polyolefin elastomer, and the weight ratio is 65:12:13; the preparation method of the modified cycloolefin copolymer comprises the following steps: blending, melting and extruding the preparation raw materials of the modified cycloolefin copolymer to obtain the modified cycloolefin copolymer; the volume flow index of the cycloolefin copolymer was 5ml/10min (test condition: HDT/B+115 ℃/2.16 kg); specifically cycloolefin copolymer 6017;
the polyolefin elastomer is a polyethylene octene co-elastomer, the melt index (190 ℃ C., 2.16 kg) of the polyolefin elastomer is 3g/10min, the density is 0.902g/cm < 3 >, the Mooney viscosity (ML 1+4@121 ℃) is 10, and the polyolefin elastomer is specifically a American Dow 8450;
the mass ratio of the polypropylene to the linear low density polyethylene to the polyolefin elastomer is 0.8:1.4:0.2;
the weight of the auxiliary agent is 1.2% of the weight of the preparation raw material of the high-transparency modified polyolefin material; the auxiliary agent is an ultraviolet absorber and an antioxidant, and the weight ratio of the auxiliary agent is 1:0.72; the ultraviolet absorber is a composition of an ultraviolet absorber UV-O and an ultraviolet absorber UV-531, and the weight ratio of the ultraviolet absorber UV-O to the ultraviolet absorber UV-531 is 1:0.65; the antioxidant is antioxidant 168;
the preparation of the high-transparency modified polyolefin material comprises the following steps:
(1) Weighing corresponding polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent, stirring and mixing to obtain a premix; (2) And (3) conveying the premix in the step (1) to a double-screw extruder, and carrying out melt granulation to obtain the high-transparency modified polyolefin material.
Example 4
The embodiment 4 of the invention provides a high-transparency modified polyolefin material, which is prepared from polyolefin, polyolefin elastomer, cycloolefin copolymer and auxiliary agent;
the polyolefin comprises polypropylene and linear low density polyethylene;
the polypropylene has a molecular weight distribution index of 3.5; the polypropylene is a composition of block polypropylene, random copolymer polypropylene and homopolymerized polypropylene, and the weight ratio of the polypropylene to the composition is 0.2:1:0.8; the block copolymerized polypropylene is the Yanshan petrochemical k6712; the random copolymer polypropylene is medium petrochemical M800E; the homo-polypropylene is a Yanshan petrochemical 1300;
the melt index of the linear low density polyethylene is 5.5g/10min at 190 ℃/2.16 kg; the linear low-density polyethylene is Qilu petrochemical DNDB7149U;
the weight of the cycloolefin copolymer is 14% of the weight of the preparation raw material of the high-transparency modified polyolefin material; the volume flow index of the cycloolefin copolymer was 5ml/10min (test condition: HDT/B+115 ℃/2.16 kg); specifically cycloolefin copolymer 6017;
the polyolefin elastomer is a polyethylene octene co-elastomer, the melt index (190 ℃ C., 2.16 kg) of the polyolefin elastomer is 3g/10min, the density is 0.902g/cm < 3 >, the Mooney viscosity (ML 1+4@121 ℃) is 10, and the polyolefin elastomer is specifically a American Dow 8450;
the mass ratio of the polypropylene to the linear low density polyethylene to the polyolefin elastomer is 0.8:1.4:0.2;
the weight of the auxiliary agent is 1.2% of the weight of the preparation raw material of the high-transparency modified polyolefin material; the auxiliary agent is an ultraviolet absorber and an antioxidant, and the weight ratio of the auxiliary agent is 1:0.72; the ultraviolet absorber is a composition of an ultraviolet absorber UV-O and an ultraviolet absorber UV-531, and the weight ratio of the ultraviolet absorber UV-O to the ultraviolet absorber UV-531 is 1:0.65; the antioxidant is antioxidant 168;
the preparation of the high-transparency modified polyolefin material comprises the following steps:
(1) Weighing corresponding polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent, stirring and mixing to obtain a premix; (2) And (3) conveying the premix in the step (1) to a double-screw extruder, and carrying out melt granulation to obtain the high-transparency modified polyolefin material.
Example 5
The embodiment 5 of the invention provides a high-transparency modified polyolefin material, which is prepared from polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent;
the polyolefin comprises polypropylene and linear low density polyethylene;
the polypropylene has a molecular weight distribution index of 3.5; the polypropylene is a composition of block polypropylene, random copolymer polypropylene and homopolymerized polypropylene, and the weight ratio of the polypropylene to the composition is 0.2:1:0.8; the block copolymerized polypropylene is the Yanshan petrochemical k6712; the random copolymer polypropylene is medium petrochemical M800E; the homo-polypropylene is a Yanshan petrochemical 1300;
the melt index of the linear low density polyethylene is 5.5g/10min at 190 ℃/2.16 kg; the linear low-density polyethylene is Qilu petrochemical DNDB7149U;
the weight of the modified cycloolefin copolymer is 14% of the weight of the preparation raw material of the high-transparency modified polyolefin material; the preparation raw materials of the modified cycloolefin copolymer comprise cycloolefin copolymer, linear low density polyethylene and polyolefin elastomer, and the weight ratio is 65:12:13; the preparation method of the modified cycloolefin copolymer comprises the following steps: blending, melting and extruding the preparation raw materials of the modified cycloolefin copolymer to obtain the modified cycloolefin copolymer; the volume flow index of the cycloolefin copolymer was 24ml/10min (test condition is HDT/B+115 ℃/2.16 kg), in particular with cycloolefin copolymer 5013;
the polyolefin elastomer is a polyethylene octene co-elastomer, the melt index (190 ℃ C., 2.16 kg) of the polyolefin elastomer is 3g/10min, the density is 0.902g/cm < 3 >, the Mooney viscosity (ML 1+4@121 ℃) is 10, and the polyolefin elastomer is specifically a American Dow 8450;
the mass ratio of the polypropylene to the linear low density polyethylene to the polyolefin elastomer is 0.8:1.4:0.2;
in one embodiment, the weight of the auxiliary agent is 1.2% of the weight of the preparation raw material of the high-transparency modified polyolefin material; the auxiliary agent is an ultraviolet absorber and an antioxidant, and the weight ratio of the auxiliary agent is 1:0.72; the ultraviolet absorber is a composition of an ultraviolet absorber UV-O and an ultraviolet absorber UV-531, and the weight ratio of the ultraviolet absorber UV-O to the ultraviolet absorber UV-531 is 1:0.65; the antioxidant is antioxidant 168;
the preparation of the high-transparency modified polyolefin material comprises the following steps:
(1) Weighing corresponding polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent, stirring and mixing to obtain a premix; (2) And (3) conveying the premix in the step (1) to a double-screw extruder, and carrying out melt granulation to obtain the high-transparency modified polyolefin material.
Example 6
The embodiment 6 of the invention provides a high-transparency modified polyolefin material, which is prepared from polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent;
the polyolefin comprises polypropylene and linear low density polyethylene;
the polypropylene has a molecular weight distribution index of 3.5; the polypropylene is a composition of block polypropylene, random copolymer polypropylene and homopolymerized polypropylene, and the weight ratio of the polypropylene to the composition is 0.2:1:0.8; the block copolymerized polypropylene is the Yanshan petrochemical k6712; the random copolymer polypropylene is medium petrochemical M800E; the homo-polypropylene is a Yanshan petrochemical 1300;
the melt index of the linear low density polyethylene is 5.5g/10min at 190 ℃/2.16 kg; the linear low-density polyethylene is Qilu petrochemical DNDB7149U;
the weight of the modified cycloolefin copolymer is 14% of the weight of the preparation raw material of the high-transparency modified polyolefin material; the preparation raw materials of the modified cycloolefin copolymer comprise cycloolefin copolymer and polyolefin elastomer, and the weight ratio is 65:13; the preparation method of the modified cycloolefin copolymer comprises the following steps: blending, melting and extruding the preparation raw materials of the modified cycloolefin copolymer to obtain the modified cycloolefin copolymer; the volume flow index of the cycloolefin copolymer was 5ml/10min (test condition: HDT/B+115 ℃/2.16 kg); specifically cycloolefin copolymer 6017;
the polyolefin elastomer is a polyethylene octene co-elastomer, the melt index (190 ℃ C., 2.16 kg) of the polyolefin elastomer is 3g/10min, the density is 0.902g/cm < 3 >, the Mooney viscosity (ML 1+4@121 ℃) is 10, and the polyolefin elastomer is specifically a American Dow 8450;
the mass ratio of the polypropylene to the linear low density polyethylene to the polyolefin elastomer is 0.8:1.4:0.2;
the weight of the auxiliary agent is 1.2% of the weight of the preparation raw material of the high-transparency modified polyolefin material; the auxiliary agent is an ultraviolet absorber and an antioxidant, and the weight ratio of the auxiliary agent is 1:0.72; the ultraviolet absorber is a composition of an ultraviolet absorber UV-O and an ultraviolet absorber UV-531, and the weight ratio of the ultraviolet absorber UV-O to the ultraviolet absorber UV-531 is 1:0.65; the antioxidant is antioxidant 168;
the preparation of the high-transparency modified polyolefin material comprises the following steps:
(1) Weighing corresponding polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent, stirring and mixing to obtain a premix; (2) And (3) conveying the premix in the step (1) to a double-screw extruder, and carrying out melt granulation to obtain the high-transparency modified polyolefin material.
Example 7
The embodiment 7 of the invention provides a high-transparency modified polyolefin material, which is prepared from polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent;
the polyolefin comprises polypropylene and linear low density polyethylene;
the polypropylene has a molecular weight distribution index of 3.5; the polypropylene is a composition of block polypropylene, random copolymer polypropylene and homopolymerized polypropylene, and the weight ratio of the polypropylene to the composition is 0.2:1:0.8; the block copolymerized polypropylene is the Yanshan petrochemical k6712; the random copolymer polypropylene is medium petrochemical M800E; the homo-polypropylene is a Yanshan petrochemical 1300;
the melt index of the linear low density polyethylene is 5.5g/10min at 190 ℃/2.16 kg; the linear low-density polyethylene is Qilu petrochemical DNDB7149U;
the weight of the modified cycloolefin copolymer is 14% of the weight of the preparation raw material of the high-transparency modified polyolefin material; the preparation raw materials of the modified cycloolefin copolymer comprise cycloolefin copolymer and linear low density polyethylene, and the weight ratio of the cycloolefin copolymer to the linear low density polyethylene is 65:12; the preparation method of the modified cycloolefin copolymer comprises the following steps: blending, melting and extruding the preparation raw materials of the modified cycloolefin copolymer to obtain the modified cycloolefin copolymer; the volume flow index of the cycloolefin copolymer was 5ml/10min (test condition: HDT/B+115 ℃/2.16 kg); specifically cycloolefin copolymer 6017;
the polyolefin elastomer is a polyethylene octene co-elastomer, the melt index (190 ℃ C., 2.16 kg) of the polyolefin elastomer is 3g/10min, the density is 0.902g/cm < 3 >, the Mooney viscosity (ML 1+4@121 ℃) is 10, and the polyolefin elastomer is specifically a American Dow 8450;
the mass ratio of the polypropylene to the linear low density polyethylene to the polyolefin elastomer is 0.8:1.4:0.2;
the weight of the auxiliary agent is 1.2% of the weight of the preparation raw material of the high-transparency modified polyolefin material; the auxiliary agent is an ultraviolet absorber and an antioxidant, and the weight ratio of the auxiliary agent is 1:0.72; the ultraviolet absorber is a composition of an ultraviolet absorber UV-O and an ultraviolet absorber UV-531, and the weight ratio of the ultraviolet absorber UV-O to the ultraviolet absorber UV-531 is 1:0.65; the antioxidant is antioxidant 168;
the preparation of the high-transparency modified polyolefin material comprises the following steps:
(1) Weighing corresponding polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent, stirring and mixing to obtain a premix; (2) And (3) conveying the premix in the step (1) to a double-screw extruder, and carrying out melt granulation to obtain the high-transparency modified polyolefin material.
Example 8
The embodiment 8 of the invention provides a high-transparency modified polyolefin material, which is prepared from polyolefin, modified cycloolefin copolymer and an auxiliary agent;
the polyolefin comprises polypropylene and linear low density polyethylene;
the polypropylene has a molecular weight distribution index of 3.5; the polypropylene is a composition of block polypropylene, random copolymer polypropylene and homopolymerized polypropylene, and the weight ratio of the polypropylene to the composition is 0.2:1:0.8; the block copolymerized polypropylene is the Yanshan petrochemical k6712; the random copolymer polypropylene is medium petrochemical M800E; the homo-polypropylene is a Yanshan petrochemical 1300;
the melt index of the linear low density polyethylene is 5.5g/10min at 190 ℃/2.16 kg; the linear low-density polyethylene is Qilu petrochemical DNDB7149U;
the weight of the modified cycloolefin copolymer is 14% of the weight of the preparation raw material of the high-transparency modified polyolefin material; the preparation raw materials of the modified cycloolefin copolymer comprise cycloolefin copolymer, linear low density polyethylene and polyolefin elastomer, and the weight ratio is 65:12:13; the preparation method of the modified cycloolefin copolymer comprises the following steps: blending, melting and extruding the preparation raw materials of the modified cycloolefin copolymer to obtain the modified cycloolefin copolymer; the volume flow index of the cycloolefin copolymer was 5ml/10min (test condition: HDT/B+115 ℃/2.16 kg); specifically cycloolefin copolymer 6017;
the polyolefin elastomer is a polyethylene octene co-elastomer, the melt index (190 ℃ C., 2.16 kg) of the polyolefin elastomer is 3g/10min, the density is 0.902g/cm < 3 >, the Mooney viscosity (ML 1+4@121 ℃) is 10, and the polyolefin elastomer is specifically a American Dow 8450;
the mass ratio of the polypropylene to the linear low density polyethylene is 0.8:1.4;
the weight of the auxiliary agent is 1.2% of the weight of the preparation raw material of the high-transparency modified polyolefin material; the auxiliary agent is an ultraviolet absorber and an antioxidant, and the weight ratio of the auxiliary agent is 1:0.72; the ultraviolet absorber is a composition of an ultraviolet absorber UV-O and an ultraviolet absorber UV-531, and the weight ratio of the ultraviolet absorber UV-O to the ultraviolet absorber UV-531 is 1:0.65; the antioxidant is antioxidant 168;
the preparation of the high-transparency modified polyolefin material comprises the following steps:
(1) Weighing corresponding polyolefin, modified cycloolefin copolymer and auxiliary agent, stirring and mixing to obtain a premix; (2) And (3) conveying the premix in the step (1) to a double-screw extruder, and carrying out melt granulation to obtain the high-transparency modified polyolefin material.
Example 9
The embodiment 9 of the invention provides a high-transparency modified polyolefin material, which is prepared from polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent;
the polyolefin comprises polypropylene and linear low density polyethylene;
the polypropylene has a molecular weight distribution index of 3.5; the polypropylene is a composition of block polypropylene, random copolymer polypropylene and homopolymerized polypropylene, and the weight ratio of the polypropylene to the composition is 0.2:1:0.8; the block copolymerized polypropylene is the Yanshan petrochemical k6712; the random copolymer polypropylene is medium petrochemical M800E; the homo-polypropylene is a Yanshan petrochemical 1300;
the melt index of the linear low density polyethylene is 5.5g/10min at 190 ℃/2.16 kg; the linear low-density polyethylene is Qilu petrochemical DNDB7149U;
the weight of the modified cycloolefin copolymer is 14% of the weight of the preparation raw material of the high-transparency modified polyolefin material; the preparation raw materials of the modified cycloolefin copolymer comprise cycloolefin copolymer, linear low density polyethylene and polyolefin elastomer, and the weight ratio is 65:12:13; the preparation method of the modified cycloolefin copolymer comprises the following steps: blending, melting and extruding the preparation raw materials of the modified cycloolefin copolymer to obtain the modified cycloolefin copolymer; the volume flow index of the cycloolefin copolymer was 5ml/10min (test condition: HDT/B+115 ℃/2.16 kg); specifically cycloolefin copolymer 6017;
the polyolefin elastomer is a polyethylene octene co-elastomer, the melt index (190 ℃ C., 2.16 kg) of the polyolefin elastomer is 3g/10min, the density is 0.902g/cm < 3 >, the Mooney viscosity (ML 1+4@121 ℃) is 10, and the polyolefin elastomer is specifically a American Dow 8450;
the mass ratio of the polypropylene to the linear low density polyethylene to the polyolefin elastomer is 0.8:1.4:0.05
The weight of the auxiliary agent is 1.2% of the weight of the preparation raw material of the high-transparency modified polyolefin material; the auxiliary agent is an ultraviolet absorber and an antioxidant, and the weight ratio of the auxiliary agent is 1:0.72; the ultraviolet absorber is a composition of an ultraviolet absorber UV-O and an ultraviolet absorber UV-531, and the weight ratio of the ultraviolet absorber UV-O to the ultraviolet absorber UV-531 is 1:0.65; the antioxidant is antioxidant 168;
the preparation of the high-transparency modified polyolefin material comprises the following steps:
(1) Weighing corresponding polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent, stirring and mixing to obtain a premix; (2) And (3) conveying the premix in the step (1) to a double-screw extruder, and carrying out melt granulation to obtain the high-transparency modified polyolefin material.
Example 9
The embodiment 9 of the invention provides a high-transparency modified polyolefin material, which is prepared from polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent;
the polyolefin comprises polypropylene and linear low density polyethylene;
the polypropylene has a molecular weight distribution index of 3.5; the polypropylene is a composition of block polypropylene, random copolymer polypropylene and homopolymerized polypropylene, and the weight ratio of the polypropylene to the composition is 0.2:1:0.8; the block copolymerized polypropylene is the Yanshan petrochemical k6712; the random copolymer polypropylene is medium petrochemical M800E; the homo-polypropylene is a Yanshan petrochemical 1300;
the melt index of the linear low density polyethylene is 5.5g/10min at 190 ℃/2.16 kg; the linear low-density polyethylene is Qilu petrochemical DNDB7149U;
the weight of the modified cycloolefin copolymer is 14% of the weight of the preparation raw material of the high-transparency modified polyolefin material; the preparation raw materials of the modified cycloolefin copolymer comprise cycloolefin copolymer, linear low density polyethylene and polyolefin elastomer, and the weight ratio is 65:12:13; the preparation method of the modified cycloolefin copolymer comprises the following steps: blending, melting and extruding the preparation raw materials of the modified cycloolefin copolymer to obtain the modified cycloolefin copolymer; the volume flow index of the cycloolefin copolymer was 5ml/10min (test condition: HDT/B+115 ℃/2.16 kg); specifically cycloolefin copolymer 6017;
the polyolefin elastomer is a polyethylene octene co-elastomer, the melt index (190 ℃ C., 2.16 kg) of the polyolefin elastomer is 3g/10min, the density is 0.902g/cm < 3 >, the Mooney viscosity (ML 1+4@121 ℃) is 10, and the polyolefin elastomer is specifically a American Dow 8450;
the mass ratio of the polypropylene to the linear low density polyethylene to the polyolefin elastomer is 0.8:0.8:0.2;
the weight of the auxiliary agent is 1.2% of the weight of the preparation raw material of the high-transparency modified polyolefin material; the auxiliary agent is an ultraviolet absorber and an antioxidant, and the weight ratio of the auxiliary agent is 1:0.72; the ultraviolet absorber is a composition of an ultraviolet absorber UV-O and an ultraviolet absorber UV-531, and the weight ratio of the ultraviolet absorber UV-O to the ultraviolet absorber UV-531 is 1:0.65; the antioxidant is antioxidant 168;
the preparation of the high-transparency modified polyolefin material comprises the following steps:
(1) Weighing corresponding polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent, stirring and mixing to obtain a premix; (2) And (3) conveying the premix in the step (1) to a double-screw extruder, and carrying out melt granulation to obtain the high-transparency modified polyolefin material.
Performance testing
And respectively extruding the high-transparency modified polyolefin materials prepared in the examples 1-10 through a backboard sheet extruder, melting and plasticizing, extruding through a rectangular mouth die to obtain a sheet melt, cooling and shaping the sheet melt through a cooling roller, and rolling to obtain the single-layer solar backboard.
The following performance tests were performed on a single layer solar backsheet:
1. transparency test:
the transparent back plates in examples 1 to 10 were tested for light transmittance by a transmittance meter, and the light transmittance was 80% or more, denoted as A; the light transmittance is more than or equal to 68 percent, and less than 80 percent is marked as B; the transmittance less than 68% is denoted as C.
2. Test of low temperature aging resistance
Under the same preparation conditions, solar cells were prepared by using the single-layer solar back sheets prepared in examples 1 to 10 respectively (the only difference between the prepared cells is that different single-layer solar back sheets are used), and according to IEC61215:2005 standard, the power change under TC200 is measured, wherein under TC200, the power change is less than or equal to 0.35% and is marked as A; the power change is more than 0.35%, and less than 1% is marked as B; the power change is 1% or more and is denoted as C.
3. Test of steam aging resistance
PCT96h digestion and aging test is carried out according to GB/T2423.40-201, and the average value of the warp and weft elongation at break retention of the single-layer solar back plates in examples 1-10 is recorded, wherein the elongation at break retention is more than or equal to 95% and is recorded as A; the elongation at break retention is less than 95% and greater than or equal to 85% is marked as B; the elongation at break retention is less than 85% and is designated as C.
The test results are shown in table 1:
TABLE 1
The foregoing examples are illustrative only and serve to explain some features of the method of the invention. The appended claims are intended to claim the broadest possible scope and the embodiments presented herein are merely illustrative of selected implementations based on combinations of all possible embodiments. It is, therefore, not the intention of the applicant that the appended claims be limited by the choice of examples illustrating the features of the invention. Some numerical ranges used in the claims also include sub-ranges within which variations in these ranges should also be construed as being covered by the appended claims where possible.
Claims (4)
1. The high-transparency modified polyolefin material is characterized in that the preparation raw materials comprise polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent; the polyolefin comprises polypropylene and linear low density polyethylene; the molecular weight distribution index of the polypropylene is 1.5-4; the melt index of the linear low density polyethylene is 4-8g/10min at 190 ℃/2.16 kg; the preparation raw materials of the modified cycloolefin copolymer comprise cycloolefin copolymer, linear low density polyethylene and polyolefin elastomer, and the weight ratio of the cycloolefin copolymer to the linear low density polyethylene is (70-80): (10-15): (10-15); the volume flow index of the cycloolefin copolymer is 2-6ml/10min; the polyolefin elastomer is polyethylene octene co-elastomer, the melt index is 3g/10min under the condition of 2.16kg at 190 ℃ and the density is 0.902g/cm 3 The Mooney viscosity is 10 under the condition of ML 1+4@121 ℃, and the mass ratio of the polypropylene to the linear low density polyethylene to the polyolefin elastomer is 0.8: (1.3-1.5): (0.1-0.3); the weight of the polyolefin elastomer herein does not include the weight of the polyolefin elastomer from which the modified cycloolefin copolymer is prepared.
2. A process for the preparation of a highly transparent modified polyolefin material according to claim 1, comprising the steps of:
(1) Weighing corresponding polyolefin, polyolefin elastomer, modified cycloolefin copolymer and auxiliary agent, stirring and mixing to obtain a premix;
(2) And (3) conveying the premix in the step (1) to a double-screw extruder, and carrying out melt granulation to obtain the high-transparency modified polyolefin material.
3. Use of a highly transparent modified polyolefin material according to claim 1, characterized in that said use of a highly transparent modified polyolefin material comprises: used for preparing single-layer or multi-layer composite backboard.
4. The use of a highly transparent modified polyolefin material according to claim 3, wherein the highly transparent modified polyolefin material is extruded through a rectangular die after being melted and plasticized by a back sheet extruder to obtain a sheet-shaped melt, and the sheet-shaped melt is cooled by a cooling roller to be shaped and wound to obtain the single-layer solar back sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110345432.6A CN114644791B (en) | 2021-03-31 | 2021-03-31 | High-transparency modified polyolefin material and preparation process and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110345432.6A CN114644791B (en) | 2021-03-31 | 2021-03-31 | High-transparency modified polyolefin material and preparation process and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114644791A CN114644791A (en) | 2022-06-21 |
| CN114644791B true CN114644791B (en) | 2023-09-22 |
Family
ID=81991813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110345432.6A Active CN114644791B (en) | 2021-03-31 | 2021-03-31 | High-transparency modified polyolefin material and preparation process and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114644791B (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060199915A1 (en) * | 2003-04-04 | 2006-09-07 | Soken Chemical & Engineering Co., Ltd. | Modified cycloolefin copolymer, process for producing the same, and use of the polymer |
| WO2016164794A1 (en) * | 2015-04-10 | 2016-10-13 | Polyone Corporation | Chemically resistant and tough cyclic olefin copolymer compounds |
-
2021
- 2021-03-31 CN CN202110345432.6A patent/CN114644791B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114644791A (en) | 2022-06-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1105135C (en) | High density polyethylene films with improved barrier | |
| CN1017788B (en) | Process for extrusion | |
| JP4844091B2 (en) | Propylene resin composition and film thereof | |
| KR20150035736A (en) | Stretchable polypropylene film | |
| CN101423733B (en) | Method for preparing transparent hot melt adhesive for PP-R plastic-aluminum steady state tube | |
| JPS60226538A (en) | Reformed polypropylene | |
| CN115071236B (en) | Ultralow-temperature heat sealing plastic film and preparation method thereof | |
| CN111454517B (en) | Polypropylene resin special for high-speed biaxially oriented film and preparation method and application thereof | |
| CN111073156A (en) | Connector material for micro-crosslinked foamed large infusion soft bag, preparation method and application | |
| KR20210067265A (en) | Composition of polypropylene resin for higher shrinkage film and shrinkage film prepared using the same | |
| CN114644791B (en) | High-transparency modified polyolefin material and preparation process and application thereof | |
| CN109280273B (en) | High melt strength polypropylene film compositions and films and uses thereof | |
| KR101664584B1 (en) | Manufacturing method of polypropylene resin composition for higher shrinkage film | |
| CN112812421B (en) | Modified polyolefin compound and preparation process and application thereof | |
| CN116120657A (en) | Thermoplastic polyolefin waterproof coiled material with barrier property and preparation method thereof | |
| KR101909577B1 (en) | Manufacturing method of polypropylene composition for higher transparency, softness and shrinkage | |
| CN115674838A (en) | Stiffness-enhanced temperature-resistant polyethylene film and preparation method and application thereof | |
| JP6668065B2 (en) | Biaxially stretch release film | |
| CN111073122B (en) | Polyethylene composition and preparation method thereof | |
| JP2010180318A (en) | Pellet mixture, molded product and method for producing the molded product | |
| JP6477471B2 (en) | Cavity-containing polypropylene film | |
| JP2019001139A (en) | Multilayer biaxially oriented film and transfer film | |
| CN117445507B (en) | Heat-resistant toughened PMMA film and preparation method thereof | |
| JP2013136792A (en) | Method for manufacturing molding, and molding | |
| CN115286876A (en) | Method for improving toughness of modified particles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |