CN114196054A - Polyolefin seat and preparation method and application thereof - Google Patents
Polyolefin seat and preparation method and application thereof Download PDFInfo
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- CN114196054A CN114196054A CN202111642060.XA CN202111642060A CN114196054A CN 114196054 A CN114196054 A CN 114196054A CN 202111642060 A CN202111642060 A CN 202111642060A CN 114196054 A CN114196054 A CN 114196054A
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- China
- Prior art keywords
- polyolefin
- seat
- antifouling layer
- grafted
- seat body
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- 229920000098 polyolefin Polymers 0.000 title claims abstract description 227
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 230000003373 anti-fouling effect Effects 0.000 claims abstract description 92
- 239000004743 Polypropylene Substances 0.000 claims description 39
- 239000002994 raw material Substances 0.000 claims description 39
- -1 polypropylene Polymers 0.000 claims description 37
- 229920001155 polypropylene Polymers 0.000 claims description 36
- 238000001746 injection moulding Methods 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 29
- 238000003756 stirring Methods 0.000 claims description 20
- 238000001125 extrusion Methods 0.000 claims description 19
- 239000004595 color masterbatch Substances 0.000 claims description 13
- 238000005507 spraying Methods 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 7
- 238000002791 soaking Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 229920001112 grafted polyolefin Polymers 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 abstract description 7
- 230000001070 adhesive effect Effects 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 4
- 239000004033 plastic Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 11
- 239000000155 melt Substances 0.000 description 9
- 238000001816 cooling Methods 0.000 description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- VBGGLSWSRVDWHB-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-henicosafluorodecyl-tris(trifluoromethoxy)silane Chemical compound FC(F)(F)O[Si](OC(F)(F)F)(OC(F)(F)F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F VBGGLSWSRVDWHB-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- ISKQADXMHQSTHK-UHFFFAOYSA-N [4-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=C(CN)C=C1 ISKQADXMHQSTHK-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229920001910 maleic anhydride grafted polyolefin Polymers 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- UQMOLLPKNHFRAC-UHFFFAOYSA-N tetrabutyl silicate Chemical compound CCCCO[Si](OCCCC)(OCCCC)OCCCC UQMOLLPKNHFRAC-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- 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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/38—Polysiloxanes modified by chemical after-treatment
- C08G77/382—Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon
- C08G77/385—Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon containing halogens
-
- 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
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—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
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
- C08J2483/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Laminated Bodies (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The application belongs to the technical field of plastic seats, and particularly relates to a polyolefin seat and a preparation method and application thereof. The application provides a polyolefin seat includes polyolefin seat body and antifouling layer, antifouling layer covers on polyolefin seat body surface, the polyolefin of grafting polar group in the polyolefin seat body component has promoted the surface energy of polyolefin seat and has taken place chemical bonding with antifouling in-layer group, adhesive force between antifouling layer and the polyolefin seat body has been improved, thereby the antifouling layer of polyolefin seat surface easily drops, the poor technical problem of durability has been solved.
Description
Technical Field
The application belongs to the technical field of plastic seats, and particularly relates to a polyolefin seat and a preparation method and application thereof.
Background
In the process of long-term use, the seats in large public places such as gymnasiums, bus stations, railway stations and the like are easy to generate stains on the surfaces of the seats, so that the attractiveness is affected, the flow of people in the large public places is large, the area is wide, and the time and the labor are consumed for cleaning the stains on the surfaces of the seats or replacing new seats; therefore, the surface of the seat in a large public place is covered with the antifouling layer, so that the generation of stains is reduced, the consumption of manpower and material resources is reduced, and the attractiveness of the seat is improved.
However, on one hand, the antifouling layer and the seat are made of two materials, and the antifouling layer made of different materials and the seat have poor compatibility and adhesion, and on the other hand, the antifouling layer is easy to fall off from the seat and has poor durability due to corrosion of the antifouling layer caused by natural factors such as temperature and humidity or artificial factors such as friction of people on the seat; in addition, compared with seats made of metal and leather fabrics, the polyolefin seat has low surface energy of polyolefin, so that an antifouling layer with good adhesive force, difficult shedding and good durability is difficult to cover on the surface of the polyolefin seat.
Disclosure of Invention
In view of the above, the present application provides a polyolefin seat, and a preparation method and an application thereof. Through the improvement of the components in the polyolefin seat, the adhesive force between the antifouling layer on the surface of the polyolefin seat and the polyolefin seat body is improved, and the technical problems that the antifouling layer on the surface of the polyolefin seat is easy to fall off and the durability is poor in the prior art are solved.
A first aspect of the present application provides a polyolefin seat comprising a polyolefin seat body and a stain resistant layer;
the antifouling layer covers the surface of the polyolefin seat body;
the components of the polyolefin seat body include a polyolefin grafted with polar groups.
Preferably, the polyolefin grafted with a polar group comprises one or more of a polyolefin grafted with methyl acrylate, a polyolefin grafted with maleic anhydride, and a polyolefin grafted with glycidyl methacrylate.
Preferably, the polar group-grafted polyolefin is a maleic anhydride-grafted polyolefin.
It should be noted that, compared with polar groups such as methyl acrylate and glycidyl methacrylate, maleic anhydride has high polarity, which is beneficial to further improve the adhesion between the antifouling layer on the surface of the polyolefin seat and the polyolefin seat body, and avoids easy falling off of the antifouling layer and poor durability.
Preferably, the polyolefin in the polyolefin seat and the polyolefin grafted with maleic anhydride is one or more polymers of ethylene, propylene or higher olefin.
Preferably, the polyolefin is polypropylene.
In a second aspect, the present application provides a method for preparing the polyolefin seat, comprising the steps of: and (3) performing melt extrusion on the polyolefin base material and the polyolefin grafted with the polar group, performing injection molding, and covering the antifouling layer on the surface of the polyolefin seat body to obtain the polyolefin seat.
The shape of the polyolefin seat body obtained by injection molding is selected according to the requirements of the seat shape in large public places such as a stadium, a bus stop, a train station and the like, and is injection molded into a corresponding shape.
Preferably, the polyolefin base material and the polyolefin grafted with the polar group are subjected to melt extrusion and injection molding, and the antifouling layer is covered on the surface of the polyolefin seat body to obtain the polyolefin seat, and the method specifically comprises the following steps:
step 1, performing melt extrusion on a polyolefin base material and polyolefin grafted with polar groups, and performing injection molding to obtain a polyolefin seat body;
and 2, spraying the raw material of the antifouling layer on the surface of the polyolefin seat body, drying and covering the antifouling layer on the surface of the polyolefin seat body to obtain the polyolefin seat.
Preferably, the polyolefin base material and the polyolefin grafted with the polar group are subjected to melt extrusion and injection molding, and the antifouling layer is covered on the surface of the polyolefin seat body to obtain the polyolefin seat, and the method specifically comprises the following steps:
step 1, performing melt extrusion on a polyolefin base material and polyolefin grafted with polar groups, and performing injection molding to obtain a polyolefin seat body;
and 2, soaking the polyolefin seat body in the raw material of the antifouling layer, drying and covering the antifouling layer on the surface of the polyolefin seat body to obtain the polyolefin seat.
It should be noted that, compared with the antifouling layer formed on the surface of the polyolefin seat body by the spraying means, the polyolefin seat body is soaked in the raw material of the antifouling layer, and the flowability of the raw material liquid of the antifouling layer is utilized to ensure that all positions on the surface of the polyolefin seat body are covered with the antifouling layer, so that the conditions that the thickness of the antifouling layer is not uniform due to nonuniform spraying, even the position of the polyolefin seat body is not sprayed can be avoided, and when the thickness of the antifouling layer is not uniform, even the position of the polyolefin seat body is not provided with the antifouling layer, natural factors such as temperature and humidity can accelerate corrosion of the antifouling layer along the thinner position or the position without the antifouling layer, so that the adhesion force of the antifouling layer is reduced and the antifouling layer is easy to fall off.
Preferably, the polyolefin base material and the polyolefin grafted with the polar group are subjected to melt extrusion and injection molding, and the antifouling layer is covered on the surface of the polyolefin seat body to obtain the polyolefin seat, and the method specifically comprises the following steps:
step 1, spraying the raw material of the antifouling layer on the injection molding die;
and 2, melting and extruding the polyolefin base material and the polyolefin grafted with the polar group, injecting the extruded polyolefin base material and the polyolefin grafted with the polar group into the mold, keeping the temperature and the pressure, and covering the antifouling layer on the surface of the polyolefin seat body to obtain the polyolefin seat.
Preferably, the polyolefin base material and the polyolefin grafted with the polar group are subjected to melt extrusion and injection molding, and the antifouling layer is covered on the surface of the polyolefin seat body to obtain the polyolefin seat, and the method specifically comprises the following steps:
step 1, soaking the injection molding die in the raw material of the antifouling layer;
and 2, melting and extruding the polyolefin base material and the polyolefin grafted with the polar group, injecting the extruded polyolefin base material and the polyolefin grafted with the polar group into the mold, keeping the temperature and the pressure, and covering the antifouling layer on the surface of the polyolefin seat body to obtain the polyolefin seat.
In addition, compared with the conventional method of drying and covering the antifouling layer on the surface of the polyolefin seat body, the raw material of the antifouling layer is sprayed on the injection molding die or the injection molding die is soaked in the raw material of the antifouling layer, then the injection molding die is arranged in an injection molding machine, the melt extrusion and the injection molding are carried out, the antifouling layer is covered on the polyolefin seat body through hot press molding under the heat preservation and heat preservation conditions, the chemical bonding between various groups in the polar groups and groups in the components in the antifouling layer is promoted by utilizing the temperature of the hot press molding, and the adhesion between the antifouling layer and the polyolefin seat body is further improved.
Preferably, before melt-extruding the polyolefin base material and the polar group grafted polyolefin, the method further comprises the following steps: and adding color master batches into the polyolefin base stock and the polyolefin grafted with the polar groups and stirring.
The color master batch is a product formed by mixing pigment, polyolefin and additive, and is used for dyeing polyolefin seats so as to meet the color requirements of seats in different public places and improve the attractiveness of the seats in the public places.
Preferably, the polyolefin in the color master batch, the polyolefin in the polyolefin grafted with the polar group and the polyolefin in the polyolefin base stock are the same polyolefin.
It should be noted that, when the polyolefin loaded with the pigment in the color master batch, the polyolefin grafted with the polar group in the polyolefin, and the polyolefin in the polyolefin base material are the same polyolefin, the compatibility between the color master batch and the polyolefin seat body can be improved, the dispersibility of the color master batch is improved, the occurrence of the conditions of uneven color and the like of the polyolefin seat is avoided, and the attractiveness of the seat in a public place is improved.
Preferably, the polyolefin in the color master batch, the polyolefin grafted with polar groups and the polyolefin in the polyolefin base stock are polypropylene.
Preferably, the stirring temperature is 25-40 ℃, the stirring rotating speed is 100-500 r/min, and the stirring time is 10-40 min.
Preferably, the melt extrusion temperature is 240-260 ℃, the rotation speed of the melt extrusion screw is 10-60 r/min, and the temperature of the injection molding die is 60-80 ℃.
Preferably, the components of the polyolefin seat comprise, in parts by mass:
2-5 parts of color master batch;
5-20 parts of polyolefin grafted with polar groups;
and 80-90 parts of polyolefin in the polyolefin base material.
Preferably, the preparation method of the raw material for the antifouling layer comprises the following steps: introducing acetone into a reaction kettle, and introducing N2And (3) protecting, starting stirring, heating to 80-100 ℃ at the rotating speed of 100-400 r/min in a stirring manner, introducing perfluorodecyl trimethoxy silane, modified fumed silica, tetraethyl orthosilicate and dibutyltin diacetate into the reaction kettle within 1-3 h, and preserving the temperature for 3-5h to obtain the antifouling layer raw material.
Preferably, the raw materials of the antifouling layer in the preparation method comprise the following components in parts by mass:
150 parts of acetone;
100 parts of perfluorodecyl trimethoxy silane;
5-15 parts of tetraethyl orthosilicate;
5-10 parts of modified fumed silica;
and 0.5-2 parts of an initiator.
In a third aspect of the present application, there is provided the use of the polyolefin seat described above in a sport area.
The polyolefin seat provided by the application has durable antifouling property, so that the cost of manpower and material resources for cleaning stains on the surface of the seat or replacing a new seat can be reduced when the polyolefin seat is used as a seat in public places with large people flow and wide area, such as a stadium, a bus station, a railway station and the like.
In summary, the present application provides a polyolefin seat, a method for preparing the same, and applications thereof; the polyolefin seat comprises a polyolefin seat body and an antifouling layer, wherein the antifouling layer covers the surface of the polyolefin seat body, and the components of the polyolefin seat body comprise polyolefin grafted with polar groups, wherein compared with the polyolefin seat without grafted polar groups, the polyolefin grafted with polar groups in the polyolefin seat component provided by the application improves the surface energy of the polyolefin seat and improves the adhesive force between the antifouling layer and the polyolefin seat body, and on the other hand, various groups in the polar groups can also be chemically bonded with groups in the components in the antifouling layer to improve the adhesive force between the antifouling layer and the polyolefin seat body, and the polyolefin grafted with polar groups in the polyolefin seat component provided by the application improves the adhesive force between the antifouling layer and the polyolefin seat body through physical modification and chemical bonding, thereby the antifouling layer on the surface of the polyolefin seat is easy to fall off and has poor durability.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic flow chart of a method for preparing a polyolefin seat according to an embodiment of the present disclosure.
Detailed Description
The application provides a polyolefin seat and a preparation method and application thereof. Through the improvement of the components in the polyolefin seat, the adhesive force between the antifouling layer on the surface of the polyolefin seat and the polyolefin seat body is improved, and the technical problems that the antifouling layer on the surface of the polyolefin seat is easy to fall off and the durability is poor in the prior art are solved.
The technical solutions in the embodiments of the present application will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The reagents or raw materials used in the following examples are commercially available or self-made.
Example 1
This example 1 provides a method for preparing a first raw material for an antifouling layer, comprising the steps of:
150g of acetone is introduced into a reaction kettle, and N is introduced2And (3) protecting, starting stirring, wherein the rotating speed of the stirring is 250r/min, heating to 85 ℃, pouring 20g of perfluorodecyl trimethoxy silane, 5g of butyl orthosilicate, 5g of modified fumed silica and 0.5g of dibutyltin diacetate into the reaction kettle for 3 hours, and preserving the temperature for 3 hours to obtain a first product 1.
Example 2
This example 2 provides a first method for preparing a polyolefin seat, comprising the steps of:
step 1, mixing 95g of polypropylene raw material and 5g of polypropylene grafted maleic anhydride, and stirring at 25 ℃, wherein the stirring speed is 300r/min, and the stirring time is 20min to obtain a polypropylene seat body raw material;
step 2, spraying the raw material of the antifouling layer provided in the embodiment 1 in a mold formed by injection molding of an injection molding machine, then melting and extruding the raw material of the polypropylene seat body provided in the step 1, injecting the raw material into the mold sprayed with the raw material of the antifouling layer, keeping the temperature and the pressure for 10min, and cooling in air to obtain the polypropylene seat;
in the present embodiment, the melt extrusion temperature is 260 ℃, the rotation speed of the melt extrusion screw is 30r/min, the mold temperature is 75 ℃, and the cooling temperature of the air is 25 ℃. .
Example 3
Example 3 provides a second method for preparing a polyolefin seat, which is different from example 2 in that: step 1, mixing 95g of polypropylene raw material, 4g of PP color master batch and 5g of polypropylene grafted maleic anhydride, and stirring at 25 ℃ for 20min at a stirring speed of 300r/min to obtain the polypropylene seat body raw material.
Example 4
This example 4 provides a third method of preparing a polyolefin seat, which differs from example 3 in that: and 2, soaking a mold formed by injection molding of an injection molding machine in the antifouling layer raw material provided in the embodiment 1, then installing the mold formed by injection molding in the injection molding machine, then melting and extruding the raw material of the polypropylene seat body provided in the step 1, injecting the raw material into the mold sprayed with the antifouling layer raw material, keeping the temperature and the pressure, and cooling in the air to obtain the polypropylene seat.
Example 5
This example 5 provides a fourth method of making a polyolefin seat, comprising the steps of:
step 1, mixing 85g of polypropylene raw material, 4g of PP color master batch and 15g of polypropylene grafted maleic anhydride, and stirring at 25 ℃, wherein the stirring speed is 400r/min, and the stirring time is 20min to obtain a polypropylene seat body raw material;
step 2, spraying the raw material of the antifouling layer provided in the embodiment 1 in a mold formed by injection molding of an injection molding machine, melting and extruding the raw material of the polypropylene seat body, injecting the raw material into the mold, keeping the temperature and the pressure for 10min, and cooling in air to obtain the polypropylene seat;
in the present embodiment, the melt extrusion temperature is 260 ℃, the rotation speed of the melt extrusion screw is 40r/min, the mold temperature is 80 ℃, and the cooling temperature of the air is 25 ℃.
Comparative example 1
This comparative example 1 provides a fifth method of preparing a polyolefin seat, the method comprising the steps of:
step 1, stirring 85g of polypropylene raw material and 4g of PP color master batch at 25 ℃, wherein the stirring speed is 400r/min, and the stirring time is 20min, so as to obtain a polypropylene seat body raw material;
step 2, melting and extruding the raw material of the polypropylene seat body, injecting the raw material into a mold, keeping the temperature and the pressure for 10min, and cooling in air to obtain the polypropylene seat;
in the present embodiment, the melt extrusion temperature is 260 ℃, the rotation speed of the melt extrusion screw is 40r/min, the mold temperature is 80 ℃, and the cooling temperature of the air is 25 ℃.
Comparative example 2
This comparative example 2 provides a sixth method for manufacturing a polyolefin seat, which is different from the method of comparative example 1 in that the method further comprises a step 3 of coating the raw material of the anti-fouling layer provided in example 1 on the seat prepared in step 2 by spraying, soaking or coating.
Example 6
Example 6 to examine the antifouling ability of the polypropylene seats provided in examples 3 and 5 and comparative example 1, the static contact angle of the surface of the product with water was measured by DSA 30 contact angle measuring instrument of kluyverz germany, the volume of pure water was uniformly 5 μ L, each sample was tested 5 times at different positions of the same sample, and the results were averaged as shown in table 1.
| Water contact Angle (°) | |
| Polypropylene seat prepared in comparative example 1 | 30 |
| Example 3 Polypropylene seat | 142.5 |
| Example 5 Polypropylene seat | 147.6 |
TABLE 1
As can be confirmed from table 1, the polypropylene seats prepared in examples 3 and 5 of the present application have a large water contact angle, compared to the polypropylene seat prepared in comparative example 1, indicating that they are difficult to wet and have antifouling properties.
Example 7
Example 7 is to examine the durability of the polypropylene seats provided in examples 3 and 5 and comparative example 2 by coating the surface of the post used in the experiment with a strong epoxy adhesive and adhering the post to the polypropylene seat covered with the anti-fouling layer, adhering four pull posts to each polypropylene seat, standing for several days, pulling the post with a hydraulic adhesion tester, and testing the adhesion of the anti-fouling paint, the results of which are shown in table 2.
| Adhesion force/Mpa | |
| Polypropylene seat prepared in comparative example 2 | 0.23 |
| Example 3 Polypropylene seat | 1.09 |
| Example 5 Polypropylene seat | 1.25 |
TABLE 2
As can be seen from the above Table 2, compared with the polypropylene seat without polar groups in the comparative example 2, the adhesion of the antifouling layer on the surface of the polypropylene seat prepared in the examples 3 and 5 of the present application is large, the antifouling layer is hard to fall off, and the durability is good, which shows that the polyolefin grafted with polar groups in the polyolefin seat component improves the surface energy of the polyolefin seat and improves the adhesion between the antifouling layer and the polyolefin seat body, and on the other hand, various groups in the polar groups can also be chemically bonded with groups in the antifouling layer, so that the adhesion between the antifouling layer and the polyolefin seat body is improved, and the polyolefin grafted with polar groups in the polyolefin seat component improves the adhesion between the antifouling layer and the polyolefin seat body through physical modification and chemical bonding, so that the antifouling layer on the surface of the polyolefin seat is easy to fall off, The durability is poor.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A polyolefin seat, comprising a polyolefin seat body and an anti-fouling layer;
the antifouling layer covers the surface of the polyolefin seat body;
the components of the polyolefin seat body include a polyolefin grafted with polar groups.
2. The polyolefin seat according to claim 1, characterized in that the polyolefin grafted with polar groups is a polyolefin grafted with maleic anhydride.
3. The polyolefin seat according to claim 1, wherein the polyolefin is polypropylene.
4. A process for the preparation of a polyolefin seat as claimed in any one of claims 1 to 3, characterized in that it comprises the steps of: and (3) performing melt extrusion on the polyolefin base material and the polyolefin grafted with the polar group, performing injection molding, and covering the antifouling layer on the surface of the polyolefin seat body to obtain the polyolefin seat.
5. The method for preparing the polyolefin seat according to claim 4, wherein the polyolefin seat is obtained by melt-extruding and injection-molding a polyolefin base material and a polyolefin grafted with polar groups, and covering the surface of the polyolefin seat body with the antifouling layer, and the method comprises the following steps:
step 1, performing melt extrusion on a polyolefin base material and polyolefin grafted with polar groups, and performing injection molding to obtain a polyolefin seat body;
and 2, spraying the raw material of the antifouling layer on the surface of the polyolefin seat body, drying and covering the antifouling layer on the surface of the polyolefin seat body to obtain the polyolefin seat.
6. The method for preparing the polyolefin seat according to claim 4, wherein the polyolefin seat is obtained by melt-extruding and injection-molding a polyolefin base material and a polyolefin grafted with polar groups, and covering the surface of the polyolefin seat body with the antifouling layer, and the method comprises the following steps:
step 1, performing melt extrusion on a polyolefin base material and polyolefin grafted with polar groups, and performing injection molding to obtain a polyolefin seat body;
and 2, soaking the polyolefin seat body in the raw material of the antifouling layer, drying and covering the antifouling layer on the surface of the polyolefin seat body to obtain the polyolefin seat.
7. The method for preparing the polyolefin seat according to claim 4, wherein the polyolefin seat is obtained by melt-extruding and injection-molding a polyolefin base material and a polyolefin grafted with polar groups, and covering the surface of the polyolefin seat body with the antifouling layer, and the method comprises the following steps:
step 1, spraying the raw material of the antifouling layer on the injection molding die;
and 2, melting and extruding the polyolefin base material and the polyolefin grafted with the polar group, injecting the extruded polyolefin base material and the polyolefin grafted with the polar group into the mold, keeping the temperature and the pressure, and covering the antifouling layer on the surface of the polyolefin seat body to obtain the polyolefin seat.
8. The method for preparing the polyolefin seat according to claim 4, wherein the polyolefin seat is obtained by melt-extruding and injection-molding a polyolefin base material and a polyolefin grafted with polar groups, and covering the surface of the polyolefin seat body with the antifouling layer, and the method comprises the following steps:
step 1, soaking the injection molding die in the raw material of the antifouling layer;
and 2, melting and extruding the polyolefin base material and the polyolefin grafted with the polar group, injecting the extruded polyolefin base material and the polyolefin grafted with the polar group into the mold, keeping the temperature and the pressure, and covering the antifouling layer on the surface of the polyolefin seat body to obtain the polyolefin seat.
9. The method for preparing polyolefin seat according to claim 4, wherein before melt-extruding the polyolefin base material and the polar group-grafted polyolefin, the method further comprises the steps of: adding color master batches into the polyolefin base stock and the polyolefin grafted with the polar groups and stirring;
the polyolefin in the color master batch, the polyolefin in the polyolefin grafted with the polar group and the polyolefin in the polyolefin base material are the same polyolefin.
10. Use of a polyolefin seat according to any one of claims 1 to 3 or a polyolefin seat obtained by the preparation process according to any one of claims 4 to 9 in sport areas.
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