CN111333967A - Polybutylene alloy film and preparation method and application thereof - Google Patents

Polybutylene alloy film and preparation method and application thereof Download PDF

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Publication number
CN111333967A
CN111333967A CN202010355162.2A CN202010355162A CN111333967A CN 111333967 A CN111333967 A CN 111333967A CN 202010355162 A CN202010355162 A CN 202010355162A CN 111333967 A CN111333967 A CN 111333967A
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film
polybutene
alloy
temperature
parts
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贺爱华
邵华锋
刘晨光
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Qingdao University of Science and Technology
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Qingdao University of Science and Technology
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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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—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
    • C08J2323/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
    • C08J2323/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
    • 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
    • C08J2423/06—Polyethene
    • 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
    • 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
    • C08J2453/00—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers

Abstract

The invention relates to a polybutylene alloy film and a preparation method and application thereof, belonging to the field of high polymer materials. The components of the material comprise polybutylene alloy, antioxidant, light stabilizer, color master batch, nucleating agent, mildew preventive, filler, separant and the like; the preparation method comprises the steps of uniformly mixing all the components by a high-speed stirrer, extruding and granulating to prepare the special material, and then obtaining the polybutene alloy film by an extrusion film blowing process. The film has higher heat creep resistant temperature and mildew resistant function, can be used as a packaging film, an easy-to-tear film, a mulching film, a greenhouse film, an insulating film, a waterproof film, a book covering film, an anti-counterfeiting film, a delustering film and the like, and is widely applied to the fields of industry, agriculture, food, medicine and the like.

Description

Polybutylene alloy film and preparation method and application thereof
Technical Field
The invention relates to a polybutylene alloy film and a preparation method and application thereof, belonging to the field of high polymer materials, in particular to the field of high polymer material processing and application.
Background
With the increasing promotion of packaging technology, the film material for packaging not only needs to satisfy the necessary functions of protecting food, prolonging the shelf life of food, etc., but also the functionality of the film material, including the functions of water proofing, anti-fogging, mildew proofing, etc., gradually receives attention from people. The common packaging films are low-density polyethylene (CN 105479882B) or biaxially oriented polypropylene (CN 109955469A), but the polyethylene and polypropylene have low heat-resistant temperature and are not suitable for application in higher temperature fields.
The high Isotactic Polybutene (iPB) has the advantages of high thermal creep resistance, high environmental stress cracking resistance, high heat resistance temperature, high impact resistance and the like, and the heat creep resistance temperature of the high isotactic polybutene is the highest in general polyolefin materials and is always the best material for pipes and connecting pieces thereof. Basell company reported that polybutylene release liner material (www.lyondellbasell.com) uses a copolymer of butylene and ethylene as the matrix resin, and copolymerization reduces the strength and heat resistance temperature of the material.
Disclosure of Invention
The invention aims to provide a special polybutylene alloy material formula with high heat-resistant temperature and mildew-proof function.
The second purpose of the invention is to provide a preparation method of the polybutylene alloy film with high heat-resistant temperature and mildew-proof function.
The invention relates to a polybutylene alloy film which comprises the following components in parts by weight:
100 parts of matrix resin;
0.1-5 parts of an antioxidant;
0.01-2 parts of a light stabilizer;
0-5 parts of color master batch;
0.01-5 parts of a nucleating agent;
0.1-5 parts of a mildew preventive;
1-30 parts of a filler;
0.1-5 parts of a release agent.
In the formula of the polybutylene alloy film, matrix resin is one of polybutylene/polypropylene in-kettle alloy, polybutylene/polyethylene in-kettle alloy, polybutylene/polypropylene physical blending alloy and polybutylene/polyethylene physical blending alloy, and the melt index of a 2.16kg test at 190 ℃ is 0.2-120 g/10 min; in the matrix resin, the isotacticity of the polybutene is more than 96 wt%, the content of the polybutene is 45-99 wt%, and the isotacticity of the polypropylene is more than 96 wt%. According to the polybutylene alloy film, the polybutylene/polypropylene in-kettle alloy consists of high isotactic polybutylene, high isotactic polypropylene and a polypropylene-polybutylene block copolymer, wherein the block copolymer accounts for 0.05-10 wt% of the alloy; the polybutylene/polyethylene in-kettle alloy consists of high isotactic polybutylene, high-density polyethylene and a polyethylene-polybutylene block copolymer, wherein the block copolymer accounts for 0.05-10 wt% of the alloy.
The antioxidant in the formula of the polybutylene alloy film is compounded by one or more of main antioxidants BHT, Hostanox03, 2246, 1010, 1076 and 3114 and one or more of auxiliary antioxidants 168, 626, 9228, 300, DLTDP, DSTDP, DMTDP and DTDTP; the weight ratio of the main antioxidant to the auxiliary antioxidant is 1: 1-1: 4.
The light stabilizer in the formula of the polybutylene alloy film is one or more than two of benzoic acid, benzophenone, benzotriazole, salicylate and hindered amine.
The color masterbatch in the formula of the polybutylene alloy film comprises the following components: 100 parts by weight of high isotactic polybutylene or polyethylene or polypropylene or ethylene-vinyl acetate copolymer with isotacticity of more than 96 wt.%, 1-30 parts by weight of polyethylene wax or polypropylene wax, 1-80 parts by weight of titanium dioxide, 0.001-6 parts by weight of pigment and 0.01-3 parts by weight of anti-aging agent.
The nucleating agent in the formula of the polybutylene alloy film is one or a mixture of two or more of 3, 4-dimethyl benzyl sorbitol, bicyclo [2, 2, 1] disodium heptanedicarboxylate, sodium bis (p-tert-butylphenyl) phosphate, aromatic amide compounds and derivatives thereof; the mildew preventive is one or more than two of chitosan, mustard extract, mugwort, o-phenylphenol, biphenyl, quaternary ammonium salt, 2-pyridine thiol zinc salt, ammonium persulfate and calcium phosphate; the filler is one or more than two of starch, lignin, calcium carbonate, magnesium carbonate, calcium phosphate, magnesium phosphate, calcium dihydrogen phosphate, silicon dioxide, argil, talcum powder, mica powder, montmorillonite, kaolin, sepiolite, hydroxyapatite and glass beads; the separant is one of talcum powder, diatomite, oleamide, mesonic acid amide and silicon dioxide.
The invention also provides a preparation method of the polybutylene alloy film, which comprises the following steps:
(1) weighing the raw materials according to the proportion, and uniformly mixing in a high-speed mixer; the mixing time is 0.1-1 h, and the mixing temperature is 0-50 ℃;
(2) adding the uniformly mixed material prepared in the step (1) into a double-screw extruder with the length-diameter ratio of 30: 1-50: 1 for melt extrusion, granulating and drying to obtain a special material for the polybutene alloy film;
(3) adding the special material obtained in the step (2) into a hopper of a film blowing device, melting the special material by a single-screw extruder with the length-diameter ratio of 20: 1-50: 1, feeding the special material into a film blowing machine head, blowing the film by the film blowing machine head, drawing the blown film by a drawing roll, and simultaneously cooling the film by auxiliary air flow to obtain the polybutene alloy film.
In the preparation method of the polybutene alloy film provided by the invention, the melt extrusion process of the double-screw extruder comprises the following steps: the temperature of a first zone of the extruder is 170-210 ℃, the temperature of a second zone is 180-220 ℃, the temperature of a third zone is 190-230 ℃, the temperature of a fourth zone is 200-250 ℃, the temperature of a machine head is 190-250 ℃, the melt pressure is 10-18 MPa, and the rotating speed is 5-50 r/min.
In the preparation method of the polybutene alloy film provided by the invention, the film blowing process during film blowing comprises the following steps: the temperature of a first cylinder area is 170-210 ℃, the temperature of a second cylinder area is 180-220 ℃, the temperature of a third cylinder area is 190-240 ℃, the temperature of a fourth cylinder area is 200-250 ℃, the temperature of a first die area is 190-230 ℃, the temperature of a second die area is 200-250 ℃, the blow-up ratio is 1-10, the traction ratio is 1-10, and the air ring is cooled.
The polybutylene alloy film provided by the invention has the film thickness of 0.5-5000 microns, and can be used as a packaging film, an easy-to-tear film, a mulching film, a greenhouse film, an insulating film, a waterproof film, a book-covering film, an anti-counterfeiting film and a delustering film in the fields of industry, agriculture, food and medicine.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Polybutene/polypropylene in-kettle alloy: the alloy had a melt index of 6.3g/10min (190 ℃, 2.16kg), a polybutene content of 85 wt.%, a block copolymer content of 4.6 wt.%, a polybutene isotacticity of 98 wt.%, and a polypropylene isotacticity of 97 wt.%.
Physical blend polybutylene/polypropylene alloy: the alloy had a melt index of 28.3g/10min (190 ℃, 2.16kg), a polybutene content of 90 wt.%, a polybutene isotacticity of 98 wt.%, and a polypropylene isotacticity of 97 wt.%.
Polybutene/polyethylene in-kettle alloy: melt index 0.1g/10min (190 ℃, 2.16kg), polybutene content 80 wt.%, block copolymer content 5.3 wt.%, polybutene isotacticity 96 wt.%.
Physical polybutylene/polyethylene blend alloy: the melt index was 0.5g/10min (190 ℃, 2.16kg), the polybutene content in the alloy was 85 wt.%, the extraction isotacticity of polybutene was 98 wt.%, and the polyethylene was LDPE.
High isotactic polybutene: the isotacticity was 97 wt%, and the melt index was 4.5g/10min (190 ℃, 2.16 kg).
Ethylene-vinyl acetate copolymer: melt index 18g/10min (190 ℃, 2.16kg) and vinyl acetate content 25 wt%.
The following raw materials in parts by weight:
example 1
Preparing a color master batch:
100 parts of high isotactic polybutene, 5 parts of polyethylene wax, 3 parts of titanium dioxide, 0.01 part of lemon yellow and 0.03 part of antioxidant 1010 are put into a double-screw extruder to be mixed, extruded and granulated to obtain a color master batch, and the color master batch is dried for later use.
The film formula is as follows:
100 parts of matrix resin polybutylene/polypropylene in-kettle alloy, 10100.1 parts of antioxidant, 1680.2 parts of antioxidant, 0.01 part of light stabilizer o-hydroxybenzophenone, 0.3 part of nucleating agent 3, 4-dimethyl benzyl sorbitol and 1 part of mildew preventive chitosan; 30 parts of filler calcium carbonate, 2 parts of color master batch and 2 parts of separant diatomite.
Preparing a film:
(1) weighing the raw materials according to the proportion, and uniformly mixing in a high-speed mixer; the mixing time is 0.1h, and the mixing temperature is 25 ℃;
(2) adding the uniformly mixed materials in the step (1) into a double-screw extruder with the length-diameter ratio of 50:1 for melt extrusion, wherein the extrusion process comprises the following steps: the temperature of the first area is 180 ℃, the temperature of the second area is 190 ℃, the temperature of the third area is 210 ℃, the temperature of the fourth area is 220 ℃, the temperature of a machine head is 230 ℃, the melt pressure is 10MPa, and the rotating speed is 25 r/min; granulating and drying to obtain a special material for the polybutylene alloy film;
(3) adding the special material obtained in the step (2) into a hopper of a film blowing device, melting the special material by a single-screw extruder with the length-diameter ratio of 50:1, sending the special material into a film blowing machine head, and blowing the film by the film blowing machine head, wherein the film blowing process comprises the following steps: the temperature of the first cylinder area is 190 ℃, the temperature of the second cylinder area is 200 ℃, the temperature of the third cylinder area is 210 ℃, the temperature of the fourth cylinder area is 230 ℃, the temperature of the first die area is 230 ℃, the temperature of the second die area is 240 ℃, the blow-up ratio is 9, blown-out films are drawn by drawing rolls, the draw ratio is 8, and the temperature of an air ring is reduced, so that the polybutene/polypropylene in-kettle alloy film is obtained.
The film thickness is 20 μm after testing, and the film can be used for food packaging films, book attaching films and matting films.
Example 2
100 parts of matrix resin polybutylene/polyethylene in-kettle alloy, 10760.1 parts of antioxidant, 6260.2 parts of antioxidant, 0.01 part of light stabilizer 4-hydroxy-2, 2,6, 6-tetramethyl piperidine and 0.1 part of mildew preventive cetyl quaternary ammonium salt; 0.3 part of 3, 4-dimethyl benzyl sorbitol nucleating agent, 10 parts of filler silicon dioxide and 1 part of talcum powder serving as separant.
Preparing a film:
(1) weighing the raw materials according to the proportion, and uniformly mixing in a high-speed mixer; the mixing time is 0.1h, and the mixing temperature is 35 ℃;
(2) adding the uniformly mixed materials in the step (1) into a double-screw extruder with the length-diameter ratio of 50:1 for melt extrusion, wherein the extrusion process comprises the following steps: the temperature of the first area is 180 ℃, the temperature of the second area is 190 ℃, the temperature of the third area is 210 ℃, the temperature of the fourth area is 220 ℃, the temperature of a machine head is 230 ℃, the melt pressure is 10MPa, and the rotating speed is 25 r/min; granulating and drying to obtain a special material for the polybutylene alloy film;
(3) adding the special material obtained in the step (2) into a hopper of a film blowing device, melting the special material by a single-screw extruder with the length-diameter ratio of 50:1, sending the special material into a film blowing machine head, and blowing the film by the film blowing machine head, wherein the film blowing process comprises the following steps: the temperature of the first cylinder area is 170 ℃, the temperature of the second cylinder area is 180 ℃, the temperature of the third cylinder area is 200 ℃, the temperature of the fourth cylinder area is 210 ℃, the temperature of the first die area is 200 ℃, the temperature of the second die area is 210 ℃, the blow-up ratio is 3, blown-out films are drawn by drawing rolls, the drawing ratio is 2, and air is cooled to obtain the polybutene/polyethylene in-kettle alloy film.
The film thickness is 3200 μm, and can be used for industrial packaging bag film.
Example 3
Preparing a color master batch: the same as in example 1.
100 parts of matrix resin polybutylene/polypropylene physical blending alloy, 10100.3 parts of antioxidant, 1680.8 parts of antioxidant, 0.02 part of light stabilizer o-hydroxybenzophenone, 0.3 part of nucleating agent 3, 4-dimethyl benzyl sorbitol and 2 parts of mildew preventive chitosan; 30 parts of filler starch, 2 parts of color master batch and 0.5 part of separant silicon dioxide.
Preparing a film:
(1) weighing the raw materials according to the proportion, and uniformly mixing in a high-speed mixer; the mixing time is 0.1h, and the mixing temperature is 25 ℃;
(2) adding the uniformly mixed materials in the step (1) into a double-screw extruder with the length-diameter ratio of 50:1 for melt extrusion, wherein the extrusion process comprises the following steps: the temperature of the first area is 180 ℃, the temperature of the second area is 190 ℃, the temperature of the third area is 210 ℃, the temperature of the fourth area is 220 ℃, the temperature of a machine head is 230 ℃, the melt pressure is 10MPa, and the rotating speed is 25 r/min; granulating and drying to obtain a special material for the polybutylene alloy film;
(3) adding the special material obtained in the step (2) into a hopper of a film blowing device, melting the special material by a single-screw extruder with the length-diameter ratio of 50:1, sending the special material into a film blowing machine head, and blowing the film by the film blowing machine head, wherein the film blowing process comprises the following steps: the temperature of the first cylinder area is 190 ℃, the temperature of the second cylinder area is 200 ℃, the temperature of the third cylinder area is 210 ℃, the temperature of the fourth cylinder area is 230 ℃, the temperature of the first die area is 230 ℃, the temperature of the second die area is 240 ℃, the blow-up ratio is 4, the blown-out film is drawn by a drawing roll, the draw ratio is 5, and the air ring is cooled, so that the physical blending alloy film of the polybutene/polypropylene is obtained.
The film thickness obtained by the test is 310 μm, and the film can be used for agricultural mulching films.
Example 4
Preparing a color master batch:
100 parts of ethylene-vinyl acetate copolymer, 5 parts of polyethylene wax, 3 parts of titanium dioxide, 0.01 part of ivory yellow and 0.03 part of antioxidant 1010 are put into a double-screw extruder to be mixed, extruded and granulated to obtain a color master batch, and the color master batch is dried for later use.
100 parts of matrix resin polybutylene/polyethylene physical blending alloy, 10760.1 parts of antioxidant, 6260.2 parts of antioxidant, 0.01 part of light stabilizer salicylic acid-4-tert-butyl phenyl ester, 0.3 part of nucleating agent 3, 4-dimethyl benzyl sorbitol and 3 parts of mildew preventive chitosan; 10 parts of filler calcium dihydrogen phosphate, 1 part of color master batch and 0.5 part of separant oleamide.
Preparing a film:
(1) weighing the raw materials according to the proportion, and uniformly mixing in a high-speed mixer; the mixing time is 0.1h, and the mixing temperature is 25 ℃;
(2) adding the uniformly mixed materials in the step (1) into a double-screw extruder with the length-diameter ratio of 50:1 for melt extrusion, wherein the extrusion process comprises the following steps: the temperature of the first area is 180 ℃, the temperature of the second area is 190 ℃, the temperature of the third area is 210 ℃, the temperature of the fourth area is 220 ℃, the temperature of a machine head is 230 ℃, the melt pressure is 10MPa, and the rotating speed is 25 r/min; granulating and drying to obtain a special material for the polybutylene alloy film;
(3) adding the special material obtained in the step (2) into a hopper of a film blowing device, melting the special material by a single-screw extruder with the length-diameter ratio of 50:1, sending the special material into a film blowing machine head, and blowing the film by the film blowing machine head, wherein the film blowing process comprises the following steps: the temperature of the first cylinder area is 180 ℃, the temperature of the second cylinder area is 190 ℃, the temperature of the third cylinder area is 200 ℃, the temperature of the fourth cylinder area is 210 ℃, the temperature of the first die area is 220 ℃, the temperature of the second die area is 230 ℃, the blow-up ratio is 2, the blown-out film is drawn by a drawing roll, the draw ratio is 3, and an air ring is cooled, so that the physical blending alloy film of the polybutene/polyethylene is obtained.
The film thickness is 2200 μm, which can be used for greenhouse film.

Claims (10)

1. The polybutylene alloy film is characterized by comprising the following components in parts by weight:
100 parts of matrix resin;
0.1-5 parts of an antioxidant;
0.01-2 parts of a light stabilizer;
0-5 parts of color master batch;
0.01-5 parts of a nucleating agent;
0.1-5 parts of a mildew inhibitor;
1-30 parts of a filler;
0.1-5 parts of a release agent.
2. The polybutene alloy film according to claim 1, wherein the matrix resin is one of polybutene/polypropylene in-pot alloy, polybutene/polyethylene in-pot alloy, polybutene/polypropylene physical blend alloy, and polybutene/polyethylene physical blend alloy, and has a melt index of 0.2 to 120g/10min at 190 ℃ under 2.16kg test; in the matrix resin, the isotacticity of the polybutene is more than 96 wt%, the content of the polybutene is 45-99 wt%, and the isotacticity of the polypropylene is more than 96 wt%.
3. The polybutene alloy film of claim 2, wherein the polybutene/polypropylene in-kettle alloy is composed of high isotactic polybutene, high isotactic polypropylene and polypropylene-polybutene block copolymer, wherein the block copolymer accounts for 0.05-10 wt% of the alloy; the polybutylene/polyethylene in-kettle alloy consists of high isotactic polybutylene, high-density polyethylene and a polyethylene-polybutylene block copolymer, wherein the block copolymer accounts for 0.05-10 wt% of the alloy.
4. The polybutene alloy film of claim 1, wherein the antioxidant is composed of one or more of primary antioxidants BHT, Hostanox03, 2246, 1010, 1076 and 3114 and one or more of secondary antioxidants 168, 626, 9228, 300, DLTDP, DSTDP, DMTDP and DTDTP; the weight ratio of the main antioxidant to the auxiliary antioxidant is 1: 1-1: 4.
5. The polybutene alloy film of claim 1 wherein the color concentrate includes the following components: 100 parts by weight of high isotactic polybutylene or polyethylene or polypropylene or ethylene-vinyl acetate copolymer with isotacticity of more than 96 wt.%, 1-30 parts by weight of polyethylene wax or polypropylene wax, 1-80 parts by weight of titanium dioxide, 0.001-6 parts by weight of pigment and 0.01-3 parts by weight of anti-aging agent.
6. The polybutene alloy film as claimed in claim 1, wherein the light stabilizer is one or more selected from the group consisting of benzoic acids, benzophenones, benzotriazoles, salicylates and hindered amines; the nucleating agent is one or a mixture of two or more of 3, 4-dimethyl benzyl sorbitol, bicyclo [2, 2, 1] disodium heptanedionate, sodium bis (p-tert-butylphenyl) phosphate, aromatic amide compounds and derivatives thereof; the filler is one or more than two of starch, lignin, calcium carbonate, magnesium carbonate, calcium phosphate, magnesium phosphate, calcium dihydrogen phosphate, silicon dioxide, argil, talcum powder, mica powder, montmorillonite, kaolin, sepiolite, hydroxyapatite and glass beads; the mildew preventive is one or more than two of chitosan, mustard extract, mugwort, o-phenylphenol, biphenyl, quaternary ammonium salt, 2-pyridine thiol zinc salt, ammonium persulfate and calcium phosphate; the separant is one of talcum powder, diatomite, oleamide, mesonic acid amide and silicon dioxide.
7. The preparation method of the polybutylene alloy film is characterized by comprising the following steps:
(1) weighing the raw materials according to the proportion, and uniformly mixing in a high-speed mixer; the mixing time is 0.1-1 h, and the mixing temperature is 0-50 ℃;
(2) adding the uniformly mixed material prepared in the step (1) into a double-screw extruder with the length-diameter ratio of 30: 1-50: 1 for melt extrusion, granulating and drying to obtain a special material for the polybutene alloy film;
(3) adding the special material obtained in the step (2) into a hopper of a film blowing device, melting the special material by a single-screw extruder with the length-diameter ratio of 20: 1-50: 1, feeding the special material into a film blowing machine head, blowing the film by the film blowing machine head, drawing the blown film by a drawing roll, and simultaneously cooling the film by auxiliary air flow to obtain the polybutene alloy film.
8. The preparation method of the double-screw extruder as claimed in claim 7, wherein the melt extrusion process of the double-screw extruder comprises a first zone temperature of 170-210 ℃, a second zone temperature of 180-220 ℃, a third zone temperature of 190-230 ℃, a fourth zone temperature of 200-250 ℃, a head temperature of 190-250 ℃, a melt pressure of 10-18 MPa, and a rotation speed of 5-50 r/min.
9. The preparation method of claim 7, wherein the temperature of the first cylinder zone is 170-210 ℃, the temperature of the second cylinder zone is 180-220 ℃, the temperature of the third cylinder zone is 190-240 ℃, the temperature of the fourth cylinder zone is 200-250 ℃, the temperature of the first die zone is 190-230 ℃, the temperature of the second die zone is 200-250 ℃, the blow-up ratio is 1-10, the traction ratio is 1-10, and the air ring is cooled during film blowing.
10. The polybutene alloy film as claimed in claim 1, wherein the thickness of the film is 0.5 to 5000 μm, and the film is used as a packaging film, an easy-to-tear film, a mulching film, a greenhouse film, an insulating film, a waterproof film, a book covering film, an anti-counterfeiting film, a matting film in the fields of industry, agriculture, food and medicine.
CN202010355162.2A 2020-04-29 2020-04-29 Polybutylene alloy film and preparation method and application thereof Pending CN111333967A (en)

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