CN111393732A - Polyolefin modified material for all-plastic mask nose bridge strip and preparation method thereof - Google Patents

Polyolefin modified material for all-plastic mask nose bridge strip and preparation method thereof Download PDF

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CN111393732A
CN111393732A CN202010256721.4A CN202010256721A CN111393732A CN 111393732 A CN111393732 A CN 111393732A CN 202010256721 A CN202010256721 A CN 202010256721A CN 111393732 A CN111393732 A CN 111393732A
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parts
zone
nose bridge
modified material
polyolefin modified
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刘军
陈娟
洪喜军
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Guangzhou Jingxin High Polymer Technology Co ltd
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Guangzhou Jingxin High Polymer Technology Co ltd
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    • 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
    • C08L23/06—Polyethene
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • A41D13/1161—Means for fastening to the user's head
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/003—Additives being defined by their diameter
    • 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
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • 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
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • 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
    • C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
    • 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
    • C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/16—Fibres; Fibrils
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/062—HDPE

Abstract

The invention discloses a polyolefin modified material for a full-plastic mask nose bridge strip and a preparation method thereof. The all-plastic nose bridge strip polyolefin modified material for the mask comprises the following raw materials in parts by weight: 40-75 parts of polyethylene, 5-10 parts of polypropylene, 1-3 parts of a softening agent, 5-20 parts of fiber, 1-2 parts of an anti-aging agent, 0.5-1 part of a lubricating dispersant, 5-10 parts of talcum powder, 1-2 parts of a processing aid, 1-2 parts of a coupling agent and 5-10 parts of a compatilizer. The polyolefin modified material prepared by the preparation process provided by the invention has the advantages of uniform dispersion of raw materials and excellent physical and chemical properties, has good processability and random bending and shaping performances after being extruded and processed into the nose bridge strip, is easy to compress and good in shaping effect, has convenient recoverability and higher cost performance, meets the requirements of the current market on the nose bridge strip of the mask, and has good economic benefits.

Description

Polyolefin modified material for all-plastic mask nose bridge strip and preparation method thereof
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a polyolefin modified material for a full-plastic mask nose bridge strip and a preparation method thereof.
Background
The nose bridge strip is a thin strip inside the mask and plays a role that the mask is fixed on the nose bridge. The nose bridge strips currently used for masks are mainly of the following types: (1) coating the galvanized fine iron wire with polyolefin polymer material; (2) a metal aluminum sheet; (3) the plastic nose bridge strip is characterized in that the metal aluminum sheet has good bending and shaping characteristics, but the metal nose bridge strip is not beneficial to the separation and recovery work of the waste mask; the polyolefin polymer material coated galvanized fine iron wire is a material widely adopted by most mask manufacturers at present, the processing principle of the material is similar to that of a wire and a cable, and the polyolefin polymer material is coated on the galvanized fine iron wire with the diameter of 0.45-0.55 mm, so that the material has high requirement on the hardness of the iron wire and high cost, and the metal wire and the polyolefin polymer material are difficult to separate and are not beneficial to the separation and recovery work of waste masks; the all-plastic nose bridge strip is mainly made of a single modified polypropylene or modified polyethylene material, and is more and more concerned by people because the all-plastic nose bridge strip is beneficial to separation and recovery of the mask, but the existing all-plastic nose bridge strip still has the problems of difficulty in compaction, unsatisfactory shaping effect and the like.
Disclosure of Invention
The invention aims to provide a polyolefin modified material for a full-plastic mask nose bridge strip and a preparation method thereof, so as to solve the technical problems.
In order to achieve the purpose, the technical scheme of the invention is as follows:
in a first aspect, the all-plastic mask nose bridge strip polyolefin modified material provided by the invention comprises the following raw materials in parts by weight: 40-75 parts of polyethylene, 5-10 parts of polypropylene, 1-3 parts of a softening agent, 5-20 parts of fiber, 1-2 parts of an anti-aging agent, 0.5-1 part of a lubricating dispersant, 5-10 parts of talcum powder, 1-2 parts of a processing aid, 1-2 parts of a coupling agent and 5-10 parts of a compatilizer.
Preferably, the polyethylene is selected from one or two of medium density polyethylene and high density polyethylene.
More preferably, the medium density polyethylene has a designation DX800 and the high density polyethylene has a designation 5200B.
Preferably, the polypropylene is a random polypropylene.
Preferably, the flexibilizer is selected from one or more of ethylene-propylene copolymer, ethylene-octene copolymer, ethylene-methyl acrylate and ethylene-butyl acrylate.
Further preferably, the ethylene-propylene copolymer has a VISTAMAXX 6202, the ethylene-octene copolymer has a 8100, the ethylene-methyl acrylate has a 18MA02, and the ethylene-butyl acrylate has a 17BA 07.
Preferably, the fibers are chopped fibers with the diameter of 5-9 mm.
Preferably, the fibers are selected from one or more of polyester fibers, alkali-free glass fibers and polypropylene fibers.
Preferably, the anti-aging agent is selected from one or more of hindered phenol type antioxidants, phosphite type antioxidants, and thioester type antioxidants.
Preferably, the lubricating dispersant is polyethylene wax.
Preferably, the processing aid is one or two of fluoropolymer processing aid and silicone.
Preferably, the coupling agent is a silane coupling agent selected from one or two of vinyltris (β -methoxyethoxy) silane and β -bis (trimethylsiloxy) styrene.
Preferably, the compatibilizer is a maleic anhydride ethylene-acrylate copolymer.
In a second aspect, the invention provides a method for preparing the polyolefin modified material of the all-plastic nose bridge strip of the mask in the first aspect, which comprises the following steps:
(1) adding talcum powder and fiber into a high-speed stirrer, adding a coupling agent at 70-90 ℃, and stirring for 5-15 min;
(2) adding polyethylene, polypropylene, a softening agent, an anti-aging agent, a lubricating dispersant, a processing aid, a coupling agent and a compatilizer into a high-speed stirrer, and stirring for 3-8 min;
(3) and melting, plasticizing, bracing and water-cooling and granulating the uniformly mixed materials by a parallel double-screw extruder to obtain the all-plastic nose bridge polyolefin modified material for the mask.
Preferably, the stirring speed of the stirring treatment in the step (1) is 800-1500 r/min.
Preferably, the stirring speed of the stirring treatment in the step (2) is 500-1000 r/min.
Preferably, the process parameters of the parallel twin-screw extruder in the step (3) are as follows:
the granulation temperature is 130-150 ℃ in the first zone, 170-180 ℃ in the second zone, 190-200 ℃ in the third zone, 190-200 ℃ in the fourth zone, 190-200 ℃ in the fifth zone, 200-210 ℃ in the sixth zone, 200-210 ℃ in the seventh zone, 200-210 ℃ in the eighth zone, 210-220 ℃ in the tenth zone, 220-230 ℃ in the eleventh zone, 230-240 ℃ in the twelfth zone, 230-240 ℃ in the thirteenth zone, and-0.01-0.1 MPa in the vacuum degree.
Compared with the prior art, the invention has the beneficial effects that:
the coupling agent and the compatilizer in the raw materials of the polyolefin modified material can increase the compatibility of fiber and powder materials and resin base materials (such as polypropylene and polyethylene), and the talcum powder and the fiber are cooperated to play a role in shaping, while the softening agent plays a role in bending at will; the polyolefin modified material prepared by the preparation process provided by the invention has the advantages of uniform dispersion of raw materials and excellent physical and chemical properties, has good processability and random bending and shaping performances after being extruded and processed into the nose bridge strip, is easy to compress and good in shaping effect, has convenient recoverability and higher cost performance, meets the requirements of the current market on the nose bridge strip of the mask, and has good economic benefits.
Detailed Description
The following further describes the embodiments of the present invention. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The polyolefin modified material for the all-plastic nose bridge of the mask comprises, by weight, 60 parts of polyethylene, 5 parts of polypropylene, 2 parts of a softening agent, 15 parts of fibers, 1 part of an anti-aging agent, 1 part of a lubricating dispersant, 8 parts of talcum powder, 1.5 parts of a processing aid, 1.5 parts of a coupling agent and 5 parts of a compatilizer, wherein the polyethylene is high-density polyethylene and is a mixture of a manufacturer with a trademark of Zhongshimei 5200B, the softening agent is an ethylene-octene copolymer and is a manufacturer with a trademark of Dow 8100, the polypropylene is random polypropylene and is a mixture of an Exxon Meifu APP and a trademark of an Acheson Meifu APP, the fibers are alkali-free chopped glass fibers with a diameter of 6mm, the processing aid is a mixture of a hindered phenol antioxidant (the trademark of GA80), a phosphite antioxidant (the trademark of HP10), a thioester antioxidant (the trademark of DSDTP) and a silicone (the trademark of a fluorine-containing polymer, the manufacturer with a trademark of Doudou antioxidant) and is a mixture of an OTP, the trademark of a silane coupling agent and a copolymer of an OTMA silane and a copolymer of a silane and a silane coupling agent with a trademark of OTE 3, and a trademark of a silane, and a silane coupling agent of a silane, and a silane, wherein the silicone are mixed according to a silane.
The preparation method of the polyolefin modified material for the all-plastic nose bridge strip of the mask provided by the embodiment comprises the following steps of:
(1) adding talcum powder and fiber into a high-speed stirrer, adding a coupling agent at 80 ℃, and stirring at a stirring speed of 1000r/min for 10 min;
(2) adding polyethylene, polypropylene, a softening agent, an anti-aging agent, a lubricating dispersant, a processing aid, a coupling agent and a compatilizer into a high-speed stirrer, and stirring at a stirring speed of 800r/min for 5 min;
(3) melting, plasticizing, bracing and water-cooling and granulating the uniformly mixed materials by a parallel double-screw extruder to obtain the all-plastic mask nose bridge polyolefin modified material, wherein the process parameters of the parallel double-screw extruder are as follows:
the granulation temperature is 130-150 ℃ in the first zone, 170-180 ℃ in the second zone, 190-200 ℃ in the third zone, 190-200 ℃ in the fourth zone, 190-200 ℃ in the fifth zone, 200-210 ℃ in the sixth zone, 200-210 ℃ in the seventh zone, 200-210 ℃ in the eighth zone, 210-220 ℃ in the tenth zone, 220-230 ℃ in the eleventh zone, 230-240 ℃ in the twelfth zone, 230-240 ℃ in the thirteenth zone, and the vacuum degree is-0.08 MPa.
The product obtained in this example was subjected to a performance test, and the test results are shown in the following table:
Figure BDA0002437624750000031
Figure BDA0002437624750000041
example 2
The polyolefin modified material for the all-plastic nose bridge of the mask comprises, by weight, 52 parts of polyethylene, 5 parts of polypropylene, 2 parts of a softening agent, 20 parts of fibers, 1 part of an anti-aging agent, 1 part of a lubricating dispersant, 10 parts of talcum powder, 1.5 parts of a processing aid, 1.5 parts of a coupling agent and 6 parts of a compatilizer, wherein the polyethylene is high-density polyethylene and is a mixture of a manufacturer with a trademark of Zhongshimei 5200B, the softening agent is an ethylene-octene copolymer and is a manufacturer with a trademark of Dow 8100, the polypropylene is random polypropylene and is a mixture of an Exxon Meifu APP and a trademark of an Acheson Meifu APP, the fibers are alkali-free chopped glass fibers with a diameter of 6mm, the processing aid is a mixture of a hindered phenol antioxidant (the trademark of GA80), a phosphite antioxidant (the trademark of HP10), a thioester antioxidant (the trademark of DSDTP) and a silicone (the trademark of a fluorine-containing polymer, the manufacturer with a trademark of Doudou antioxidant) and is a mixture of an OTP, the trademark of a silane coupling agent and a silane copolymer of an OTMA 35 and a silane coupling agent and is a mixture of an OTMA 35, and is a mixture of a silane and a silane coupling agent and is a silane and is a mixture of a silane and a silane of a silane with a trademark of a.
The preparation method of the polyolefin modified material for the all-plastic nose bridge strip of the mask provided by the embodiment comprises the following steps of:
(1) adding talcum powder and fiber into a high-speed stirrer, adding a coupling agent at 80 ℃, and stirring at a stirring speed of 1000r/min for 10 min;
(2) adding polyethylene, polypropylene, a softening agent, an anti-aging agent, a lubricating dispersant, a processing aid, a coupling agent and a compatilizer into a high-speed stirrer, and stirring at a stirring speed of 800r/min for 5 min;
(3) melting, plasticizing, bracing and water-cooling and granulating the uniformly mixed materials by a parallel double-screw extruder to obtain the all-plastic mask nose bridge polyolefin modified material, wherein the process parameters of the parallel double-screw extruder are as follows:
the granulation temperature is 130-150 ℃ in the first zone, 170-180 ℃ in the second zone, 190-200 ℃ in the third zone, 190-200 ℃ in the fourth zone, 190-200 ℃ in the fifth zone, 200-210 ℃ in the sixth zone, 200-210 ℃ in the seventh zone, 200-210 ℃ in the eighth zone, 210-220 ℃ in the tenth zone, 220-230 ℃ in the eleventh zone, 230-240 ℃ in the twelfth zone, 230-240 ℃ in the thirteenth zone, and the vacuum degree is-0.08 MPa.
The product obtained in this example was subjected to a performance test, and the test results are shown in the following table:
Figure BDA0002437624750000051
example 3
The polyolefin modified material for the all-plastic nose bridge of the mask comprises, by weight, 40 parts of polyethylene, 10 parts of polypropylene, 3 parts of a softening agent, 20 parts of fiber, 2 parts of an anti-aging agent, 1 part of a lubricating dispersant, 10 parts of talcum powder, 2 parts of a processing aid, 2 parts of a coupling agent and 10 parts of a compatilizer, wherein the polyethylene is high-density polyethylene and is of a manufacturer with a trademark of Zhongshimei 5200B, the softening agent is an ethylene-octene copolymer and is of a Dow 8100 trademark, the polypropylene is atactic polypropylene and is of an Exxon Meifu APP299, the fiber is alkali-free chopped glass fiber with the diameter of 6mm, the anti-aging agent is a mixture formed by mixing a hindered phenol antioxidant (of GA80), a phosphite antioxidant (of HP10) and a thioester antioxidant (of DSDTP) according to a weight ratio of 4:3:3, the processing aid is a mixture formed by mixing silicone (of GA 6441P) and a fluorine-containing polymer processing aid (of a manufacturer with Dudu Dou Dow brand) according to a trademark of a silane compatibility additive and is of a silane coupling agent and is of an OTMA 3: 4232 and an OTE-acrylate copolymer.
The preparation method of the polyolefin modified material for the all-plastic nose bridge strip of the mask provided by the embodiment comprises the following steps of:
(1) adding talcum powder and fiber into a high-speed stirrer, adding a coupling agent at 90 ℃, and stirring at a stirring speed of 1500r/min for 5 min;
(2) adding polyethylene, polypropylene, a softening agent, an anti-aging agent, a lubricating dispersant, a processing aid, a coupling agent and a compatilizer into a high-speed stirrer, and stirring at a stirring speed of 1000r/min for 3 min;
(3) melting, plasticizing, bracing and water-cooling and granulating the uniformly mixed materials by a parallel double-screw extruder to obtain the all-plastic mask nose bridge polyolefin modified material, wherein the process parameters of the parallel double-screw extruder are as follows:
the granulation temperature is 130-150 ℃ in the first zone, 170-180 ℃ in the second zone, 190-200 ℃ in the third zone, 190-200 ℃ in the fourth zone, 190-200 ℃ in the fifth zone, 200-210 ℃ in the sixth zone, 200-210 ℃ in the seventh zone, 200-210 ℃ in the eighth zone, 210-220 ℃ in the tenth zone, 220-230 ℃ in the eleventh zone, 230-240 ℃ in the twelfth zone, 230-240 ℃ in the thirteenth zone, and the vacuum degree is-0.08 MPa.
The product obtained in this example was subjected to a performance test, and the test results are shown in the following table:
Figure BDA0002437624750000061
example 4
The polyolefin modified material for the all-plastic nose bridge of the mask comprises, by weight, 75 parts of polyethylene, 5 parts of polypropylene, 1 part of a softening agent, 5 parts of fibers, 1 part of an anti-aging agent, 0.5 part of a lubricating dispersant, 5 parts of talcum powder, 1 part of a processing aid, 1 part of a coupling agent and 5 parts of a compatilizer, wherein the polyethylene is high-density polyethylene and is a mixture of a manufacturer with a trademark of Zhongpetrochemical 5200B, the softening agent is an ethylene-octene copolymer and is a manufacturer with a trademark of Dow 8100, the polypropylene is atactic polypropylene and is a mixture of Exxon Mobil APP299, the fibers are alkali-free chopped glass fibers with a diameter of 6mm, the anti-aging agent is a hindered phenol antioxidant (the trademark of GA80), a phosphite antioxidant (the trademark of HP10), a thioester antioxidant (the trademark of DSDTP) and is a mixture of silicone (the manufacturer with the trademark of GA 6441P), a fluoropolymer processing aid (the trademark of Du polymer and a trademark of DSDTP) and is a mixture of an OTMA 3 and a silane coupling agent and is a mixture of a silane coupling agent and an OTE 3-35.
The preparation method of the polyolefin modified material for the all-plastic nose bridge strip of the mask provided by the embodiment comprises the following steps of:
(1) adding talcum powder and fiber into a high-speed stirrer, adding a coupling agent at 70 ℃, and stirring at a stirring speed of 800r/min for 15 min;
(2) adding polyethylene, polypropylene, a softening agent, an anti-aging agent, a lubricating dispersant, a processing aid, a coupling agent and a compatilizer into a high-speed stirrer, and stirring at a stirring speed of 500r/min for 8 min;
(3) melting, plasticizing, bracing and water-cooling and granulating the uniformly mixed materials by a parallel double-screw extruder to obtain the all-plastic mask nose bridge polyolefin modified material, wherein the process parameters of the parallel double-screw extruder are as follows:
the granulation temperature is 130-150 ℃ in the first zone, 170-180 ℃ in the second zone, 190-200 ℃ in the third zone, 190-200 ℃ in the fourth zone, 190-200 ℃ in the fifth zone, 200-210 ℃ in the sixth zone, 200-210 ℃ in the seventh zone, 200-210 ℃ in the eighth zone, 210-220 ℃ in the tenth zone, 220-230 ℃ in the eleventh zone, 230-240 ℃ in the twelfth zone, 230-240 ℃ in the thirteenth zone, and the vacuum degree is-0.08 MPa.
The product obtained in this example was subjected to a performance test, and the test results are shown in the following table:
Figure BDA0002437624750000071
example 5
The polyolefin modified material for the all-plastic nose bridge of the mask comprises, by weight, 65 parts of polyethylene, 7 parts of polypropylene, 2 parts of a softening agent, 7 parts of fibers, 1 part of an anti-aging agent, 0.5 part of a lubricating dispersant, 6 parts of talcum powder, 1.5 parts of a processing aid, 1 part of a coupling agent and 9 parts of a compatilizer, wherein the polyethylene is high-density polyethylene and is a mixture of polyethylene, ethylene-octene copolymer, Dow 8100, polypropylene, Acheson Mobil 299 APP, 6mm alkali-free chopped glass fibers, hindered phenol antioxidant (GA 80), phosphite antioxidant (HP 10), thioester antioxidant (DSDTP), silicone antioxidant (JP 3: 3), fluorine-containing polymer processing promoter, DUJIAOJIAO, 1: 200 silane, ethylene-acrylate copolymer, ethylene-propylene-acrylate copolymer, ethylene-propylene-ethylene-propylene-acrylate copolymer, ethylene-propylene-ethylene-propylene-ethylene-acrylate copolymer, ethylene-propylene-diene monomer copolymer, ethylene-propylene-acrylate copolymer, propylene-styrene-acrylate copolymer, propylene-styrene-.
The preparation method of the polyolefin modified material for the all-plastic nose bridge strip of the mask provided by the embodiment comprises the following steps of:
(1) adding talcum powder and fiber into a high-speed stirrer, adding a coupling agent at 80 ℃, and stirring at a stirring speed of 1000r/min for 10 min;
(2) adding polyethylene, polypropylene, a softening agent, an anti-aging agent, a lubricating dispersant, a processing aid, a coupling agent and a compatilizer into a high-speed stirrer, and stirring at a stirring speed of 800r/min for 5 min;
(3) melting, plasticizing, bracing and water-cooling and granulating the uniformly mixed materials by a parallel double-screw extruder to obtain the all-plastic mask nose bridge polyolefin modified material, wherein the process parameters of the parallel double-screw extruder are as follows:
the granulation temperature is 130-150 ℃ in the first zone, 170-180 ℃ in the second zone, 190-200 ℃ in the third zone, 190-200 ℃ in the fourth zone, 190-200 ℃ in the fifth zone, 200-210 ℃ in the sixth zone, 200-210 ℃ in the seventh zone, 200-210 ℃ in the eighth zone, 210-220 ℃ in the tenth zone, 220-230 ℃ in the eleventh zone, 230-240 ℃ in the twelfth zone, 230-240 ℃ in the thirteenth zone, and the vacuum degree is-0.08 MPa.
The product obtained in this example was subjected to a performance test, and the test results are shown in the following table:
Figure BDA0002437624750000081
example 6
The polyolefin modified material for the all-plastic nose bridge of the mask provided by the embodiment comprises, by weight, 60 parts of polyethylene, 5 parts of polypropylene, 2 parts of a softening agent, 15 parts of fibers, 1 part of an anti-aging agent, 1 part of a lubricating dispersant, 8 parts of talcum powder, 1.5 parts of a processing aid, 1.5 parts of a coupling agent and 5 parts of a compatilizer, wherein the polyethylene is high-density polyethylene and the manufacturer and the brand are China petrochemical 5200B, the softening agent is an ethylene-propylene copolymer and the manufacturer and the brand are Exxon Mobil VITAMAXX 2, the polypropylene is random polypropylene and the manufacturer and the brand are Exxon Mobil APP299, the fiber is 9mm polypropylene fiber, the anti-aging agent is a hindered phenol antioxidant (the brand is GA80), the phosphite antioxidant (the brand is HP10), the thioester antioxidant (the brand is DSDTP) is mixed according to the weight ratio of 5:2:3, the processing aid is a mixture of silicone (the manufacturer and the fluorine-containing polymer (the product).
The product obtained in this example was subjected to a performance test, and the test results are shown in the following table:
Figure BDA0002437624750000091
example 7
The polyolefin modified material for the full-plastic nose bridge of the mask provided by the embodiment comprises, by weight, 60 parts of polyethylene, 5 parts of polypropylene, 2 parts of a softening agent, 15 parts of fiber, 1 part of an anti-aging agent, 1 part of a lubricating dispersant, 8 parts of talcum powder, 1.5 parts of a processing aid, 1.5 parts of a coupling agent and 5 parts of a compatilizer, wherein the polyethylene is medium-density polyethylene and DX800 with the brand of L G, the softening agent is ethylene-methyl acrylate with the brand of Achima 18MA02, the polypropylene is random polypropylene and APP299 with the brand of Achimedu, the fiber is 5mm polyester fiber, the anti-aging agent is a mixture of a hindered phenol antioxidant (GA 80), a phosphite antioxidant (HP 10), a thioester antioxidant (DSDTP) with the brand of 4:4:2, the processing aid is a mixture of silicone (6441P from manufacturers and a fluorine-containing polymer processing aid (DSDTP) which is a silicone copolymer prepared by mixing Achima silicone with a silicone copolymer of Achima silicone and a silicone acrylate copolymer of Achima silicone with the brand of Achima silicone and a silicone acrylate copolymer of Achima No. 5 and a silicone, wherein the acrylic acid anhydride is prepared by mixing step of an OT591, a silicone of an Achima silicone and a silicone of a silicone and a silicone of a silicone and a silicone.
The product obtained in this example was subjected to a performance test, and the test results are shown in the following table:
Figure BDA0002437624750000101
comparative example 1
The polyolefin modified material for the full-plastic nose bridge of the mask comprises, by weight, 80 parts of polyethylene, 2 parts of a softening agent, 1 part of an anti-aging agent, 1 part of a lubricating dispersant, 8 parts of talcum powder, 1.5 parts of a processing aid, 1.5 parts of a coupling agent and 5 parts of a compatilizer, wherein the polyethylene is high-density polyethylene and is a mixture prepared by mixing polyethylene-octene copolymer with the manufacturer and the brand of China petrochemical 5200B, the softening agent is an ethylene-octene copolymer with the manufacturer and the brand of Dow 8100, the anti-aging agent is a mixture prepared by mixing hindered phenol antioxidant (the brand of GA80), phosphite antioxidant (the brand of HP10) and thioester antioxidant (the brand of DSDTP) according to the weight ratio of 4:3:3, the processing aid is a mixture prepared by mixing silicone (the manufacturer and the brand of Yongchuang 6441P) and a fluoropolymer processing aid (the manufacturer and the brand of DuPont Z200) according to the weight ratio of 3:1, the maleic anhydride-acrylate copolymer, the manufacturer and the nose bridge of Acma silane modified material is an OTE-E-silane coupling agent prepared according to the production example of HT 3: 6, and the product of OTE-E-ethylene modified mask is prepared by mixing step of ABS.
The product obtained in this comparative example was subjected to a performance test, the test results are shown in the following table:
Figure BDA0002437624750000102
Figure BDA0002437624750000111
the foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (10)

1. A polyolefin modified material for a full-plastic mask nose bridge strip is characterized by comprising the following raw materials in parts by weight: 40-75 parts of polyethylene, 5-10 parts of polypropylene, 1-3 parts of a softening agent, 5-20 parts of fiber, 1-2 parts of an anti-aging agent, 0.5-1 part of a lubricating dispersant, 5-10 parts of talcum powder, 1-2 parts of a processing aid, 1-2 parts of a coupling agent and 5-10 parts of a compatilizer.
2. The all-plastic mask nose bridge polyolefin modified material according to claim 1, wherein said polyethylene is selected from one or two of medium density polyethylene and high density polyethylene.
3. The all-plastic mask nose bridge polyolefin modified material according to claim 1, wherein said polypropylene is atactic polypropylene.
4. The all-plastic mask nose bridge polyolefin modified material according to claim 1, wherein said flexibility-increasing agent is selected from one or more of ethylene-propylene copolymer, ethylene-octene copolymer, ethylene-methyl acrylate, and ethylene-butyl acrylate.
5. The all-plastic mask nose bridge polyolefin modified material according to claim 1, wherein said fibers are selected from one or more of polyester fibers, alkali-free glass fibers and polypropylene fibers.
6. The all-plastic mask nose bridge polyolefin modified material according to claim 1, wherein the anti-aging agent is selected from one or more of hindered phenol type antioxidant, phosphite type antioxidant and thioester type antioxidant.
7. The polyolefin modified material for the all-plastic nose bridge of the mask as claimed in claim 1, wherein said lubricant dispersant is polyethylene wax, and said processing aid is one or two of fluoropolymer processing aid and silicone.
8. The all-plastic mask nose bridge polyolefin modified material according to claim 1, wherein said coupling agent is a silane coupling agent, and said compatibilizer is maleic anhydride ethylene-acrylate copolymer.
9. The preparation method of the polyolefin modified material for the all-plastic nose bridge strip of the mask as claimed in any one of claims 1 to 8, characterized by comprising the following steps:
(1) adding talcum powder and fiber into a high-speed stirrer, adding a coupling agent at 70-90 ℃, and stirring for 5-15 min;
(2) adding polyethylene, polypropylene, a softening agent, an anti-aging agent, a lubricating dispersant, a processing aid, a coupling agent and a compatilizer into a high-speed stirrer, and stirring for 3-8 min;
(3) and melting, plasticizing, bracing and water-cooling and granulating the uniformly mixed materials by a parallel double-screw extruder to obtain the all-plastic nose bridge polyolefin modified material for the mask.
10. The method for preparing polyolefin modified material of all-plastic nose bridge strip for mask according to claim 9, wherein the process parameters of the parallel twin-screw extruder in the step (3) are as follows:
the granulation temperature is 130-150 ℃ in the first zone, 170-180 ℃ in the second zone, 190-200 ℃ in the third zone, 190-200 ℃ in the fourth zone, 190-200 ℃ in the fifth zone, 200-210 ℃ in the sixth zone, 200-210 ℃ in the seventh zone, 200-210 ℃ in the eighth zone, 210-220 ℃ in the tenth zone, 220-230 ℃ in the eleventh zone, 230-240 ℃ in the twelfth zone, 230-240 ℃ in the thirteenth zone, and-0.01-0.1 MPa in the vacuum degree.
CN202010256721.4A 2020-04-02 2020-04-02 Polyolefin modified material for all-plastic mask nose bridge strip and preparation method thereof Pending CN111393732A (en)

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