CN115260648A - Anti-fog master batch, preparation method of high-transparent anti-fog hydrophobic sheet and high-transparent hydrophobic anti-fog cover - Google Patents

Anti-fog master batch, preparation method of high-transparent anti-fog hydrophobic sheet and high-transparent hydrophobic anti-fog cover Download PDF

Info

Publication number
CN115260648A
CN115260648A CN202210814193.9A CN202210814193A CN115260648A CN 115260648 A CN115260648 A CN 115260648A CN 202210814193 A CN202210814193 A CN 202210814193A CN 115260648 A CN115260648 A CN 115260648A
Authority
CN
China
Prior art keywords
fog
antifogging
agent
hydrophobic
sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210814193.9A
Other languages
Chinese (zh)
Inventor
刘石军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xintianli Technology Co ltd
Original Assignee
Xintianli Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xintianli Technology Co ltd filed Critical Xintianli Technology Co ltd
Priority to CN202210814193.9A priority Critical patent/CN115260648A/en
Publication of CN115260648A publication Critical patent/CN115260648A/en
Pending legal-status Critical Current

Links

Images

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
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • C08J3/223—Packed additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • 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
    • 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
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/10—Esters; Ether-esters
    • C08K5/101—Esters; Ether-esters of monocarboxylic acids
    • C08K5/103—Esters; Ether-esters of monocarboxylic acids with polyalcohols
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/15—Heterocyclic compounds having oxygen in the ring
    • C08K5/151—Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
    • C08K5/1535—Five-membered rings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/10—Transparent films; Clear coatings; Transparent materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/24—Crystallisation aids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses an antifogging master batch which comprises the following raw materials in percentage by weight: 65 to 85 percent of homopolymerized polypropylene, 10 to 30 percent of antifogging agent, 1 to 3 percent of coupling agent, 0.5 to 2 percent of dispersing agent, 0.1 to 0.4 percent of antioxidant and 0.1 to 0.4 percent of ultraviolet absorbent. A preparation method of a high-transparency anti-fog hydrophobic sheet material is characterized in that anti-fog master batches, main body resin, a DBS nucleating agent and a toughening agent are subjected to multi-layer co-extrusion to prepare the high-transparency anti-fog hydrophobic sheet material. A high-transparency hydrophobic anti-fog cover is made by blow molding a high-transparency anti-fog hydrophobic sheet. Through the mode, the anti-fog master batch, the preparation method of the high-transparent anti-fog hydrophobic sheet and the high-transparent hydrophobic anti-fog cover are adopted, the anti-fog master batch has good anti-fog and hydrophobic properties, and the sheet formed by multi-layer co-extrusion of the anti-fog master batch, the DBS nucleating agent and the main resin has good hydrophobic property and high transparency, so that the fog drop phenomenon of the high-transparent hydrophobic anti-fog cover is improved.

Description

Anti-fog master batch, preparation method of high-transparent anti-fog hydrophobic sheet and high-transparent hydrophobic anti-fog cover
Technical Field
The invention relates to the field of video packaging, in particular to an antifogging master batch, a preparation method of a high-transparent antifogging hydrophobic sheet and a high-transparent hydrophobic antifogging cover.
Background
PP has excellent physical and chemical properties, and the mechanical and heat-resistant properties of PP are the best among known thermoplastic resins. However, since PP is a semicrystalline polymer, it has the disadvantages of slow crystallization rate, low crystallinity, easy formation of large-size spherulites during molding, etc., and thus its transparency is poor, which greatly limits the application of PP in the field of transparent products. In order to meet the market demand for high transparency of PP, the PP is subjected to anti-reflection modification, and the transparency and the glossiness of the modified PP can be comparable with those of the traditional transparent synthetic resin (such as polyvinyl chloride, polystyrene, polymethyl methacrylate, polycarbonate and the like).
In the process of packaging, storing, transporting and selling fruits, vegetables, fresh products and other foods, polyolefin materials are widely applied due to the characteristics of no toxicity, no smell, high transparency, good packaging effect and the like. However, since the water content of fruits, vegetables, fresh foods and the like is high, the moisture content of the air inside the product package can be changed along with the change of the environmental temperature, when water vapor in the package reaches a dew point, supersaturated steam can be condensed into water drops, so that the transparency of the package is affected, the product is not favorable for sale, meanwhile, water drops gathered on the surface of the cover can drop into the product, the propagation of bacteria is accelerated, the food preservation is affected, the food is deteriorated, and the preservation period of the packaged food is shortened. Therefore, the addition of an antifog agent to the polyolefin material of the cap is an effective method for improving the fogging phenomenon of the cap.
Disclosure of Invention
The invention mainly solves the technical problem of providing an antifogging master batch, a preparation method of a high-transparent antifogging hydrophobic sheet and a high-transparent hydrophobic antifogging cover, wherein the antifogging master batch has good antifogging and hydrophobic properties, and the sheet formed by multi-layer co-extrusion of the antifogging master batch, a DBS nucleating agent and a main body resin has good hydrophobic property and high transparency, so that the fog drop phenomenon of the high-transparent hydrophobic antifogging cover is improved.
In order to solve the technical problems, the invention adopts a technical scheme that: the antifogging master batch comprises the following raw materials in percentage by weight: 65-85% of homopolymerized polypropylene, 10-30% of antifogging agent, 1-3% of coupling agent, 0.5-2% of dispersing agent, 0.1-0.4% of antioxidant and 0.1-0.4% of ultraviolet absorbent, wherein the antifogging agent is at least two of glycerin fatty acid ester, sorbitan monooleate and ethylene oxide adduct of glycerin monooleate or sorbitan monooleate, the coupling agent is selected from titanate coupling agent, and the antioxidant is compound antioxidant.
In a preferred embodiment of the present invention, the antioxidant is a hindered phenol antioxidant or a phosphite antioxidant.
In a preferred embodiment of the present invention, the melt index of the homo-polypropylene is 2-3g/10min.
In a preferred embodiment of the invention, the dispersing agent is polyethylene wax.
In a preferred embodiment of the invention, the coupling agent is a monoalkoxy pyrophosphate type titanate.
In a preferred embodiment of the present invention, the ultraviolet absorber is UV326.
In order to solve the technical problem, the invention adopts another technical scheme that: provided is a preparation method of a high-transparency antifogging hydrophobic sheet, which comprises the following steps: a. mixing 65-85% of homo-polypropylene, 10-30% of antifogging agent, 1-3% of coupling agent, 0.5-2% of dispersing agent, 0.1-0.4% of antioxidant and 0.1-0.4% of ultraviolet absorbent through a high-speed mixer, extruding the melt through a double-screw extruder, and granulating, drying and cooling the melt to prepare antifogging master batch; b. b, drawing the antifogging master batch prepared in the step a into a sheet through multilayer coextrusion, wherein the upper layer is prepared by mixing and extruding 90-97 wt% of main body resin, 0.3-2 wt% of DBS nucleating agent and 2-8 wt% of toughening agent, and the layer ratio accounts for 90%; the lower layer is prepared by mixing and extruding 90-97 wt% of main resin, 0.3-1 wt% of DBS nucleating agent and 2-9 wt% of toughening agent, and the layer ratio is 10%; c. the sheet is rolled and cooled by a sheet puller to be stretched into a high-transparency antifogging hydrophobic sheet, and the thickness of the sheet is 400-600 mu m.
In a preferred embodiment of the invention, in the step b, the rotating speed of the screw in the upper layer extrusion process is 40-50 r/min, the extrusion pressure is 5-9MPa, the rotating speed of the screw in the lower layer extrusion process is 15-20r/min, and the extrusion pressure is 4-6MPa.
In a preferred embodiment of the present invention, the host resin in step b is polypropylene copolymer, and the toughening agent is a copolymer of ethylene and propylene.
In order to solve the technical problem, the invention adopts another technical scheme that: a highly transparent hydrophobic antifogging cap is provided, which is made by blow molding the highly transparent antifogging hydrophobic sheet prepared by the method.
The invention has the beneficial effects that: the antifogging master batch, the preparation method of the highly transparent antifogging hydrophobic sheet and the highly transparent hydrophobic antifogging cover improve the surface chemical property of polyolefin through the antifogging agent, improve the surface energy, can be oriented on the surface of plastic, and have inward hydrophobic groups and outward hydrophilic groups, so that water can easily wet the surface of the plastic, and condensed fine water drops can be quickly diffused to form an extremely thin water layer or large water drops to flow down along the film.
The invention has the beneficial effects that: the sheet adopts a multi-layer co-extrusion structure, the antifogging master batches are added into the lower layer so as to realize the antifogging effect of the product, and the antifogging aid is added into the lower layer so as to enable the internal surfactant to be orderly arranged on the surface as soon as possible, so that the product has antifogging performance at the initial stage.
The invention discloses an antifogging master batch, a preparation method of a high-transparent antifogging hydrophobic sheet and a high-transparent hydrophobic antifogging cover.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic microscopic view of unmodified polypropylene;
FIG. 2 is a schematic microscopic view of a modified polypropylene;
fig. 3 is a schematic illustration of the antifogging mechanism of the anti-mist additive.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below. The structure, proportion, size and the like shown in the drawings are only used for matching with the content disclosed in the specification, so that the person skilled in the art can understand and read the description, and the description is not used for limiting the limit condition of the implementation of the invention, so the method has no technical essence, and any structural modification, proportion relation change or size adjustment still falls within the scope of the technical content disclosed by the invention without affecting the effect and the achievable purpose of the invention. In addition, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are used for clarity of description, and are not used to limit the implementable scope, and the changes or adjustments of the relative relationship thereof can be considered as the implementable scope of the present invention without substantial technical changes.
Example 1: an antifogging master batch comprises the following raw materials in percentage by weight: 85% of homopolymerized polypropylene, 10% of antifogging agent, 2.2% of coupling agent, 2% of dispersing agent, 0.4% of antioxidant and 0.4% of ultraviolet absorbent. The melt index of the homopolymerized polypropylene is selected to be 2-3g/10min.
The antioxidant is a compound antioxidant, the antioxidant is a hindered phenol antioxidant or a phosphite antioxidant, and in order to prevent the antioxidant from influencing the color, the antioxidant is preferably B225, because the compound antioxidant is required to be compounded, except for peroxide (ROOH) generated after the antioxidant is decomposed and a peroxide free radical (ROO & ltcndot & gt) is captured by the antioxidant, the antioxidant mainly has the function of reacting with the peroxide to form a stable compound to prevent the peroxide from cracking into a free radical.
The antifogging agent is selected from more than two antifogging agents for realizing antifogging effect, specifically at least two of glycerin fatty acid ester, sorbitan monooleate and ethylene oxide adduct of glycerin monooleate or sorbitan monooleate. The antifogging agent is used to improve the surface chemistry of the polyolefin and increase the surface energy. The antifogging agent is some surfactant with hydrophilic group, which can be oriented on the surface of plastic, the hydrophobic group is inward, the hydrophilic group is outward (as shown in figure 3), so that the water can easily wet the surface of plastic, and the condensed fine water drops can quickly diffuse to form a very thin water layer or large water drops flow down along the film.
The coupling agent is titanate coupling agent, in particular monoalkoxy pyrophosphate titanate. The ultraviolet absorbent is UV326.
The preparation method of the antifogging master batch comprises the following steps: the dispersing agent, the antioxidant, the coupling agent, the ultraviolet absorber and part of the homo-polypropylene are premixed by a high-speed mixer to prepare 10 percent of premix, the antifogging agent and the rest homo-polypropylene are fed by a weightlessness scale, the premix, the antifogging agent and the rest homo-polypropylene are fully mixed by the weightlessness scale, a melt is extruded by a double-screw extruder, the temperature of the extruder is controlled to be 10-40 ℃ above the melting point of the carrier resin, the rotating speed of the extruder is controlled to be 350-500rpm, and the melt is granulated, dried and cooled to prepare a finished master batch.
The preparation method of the high-transparency antifogging hydrophobic sheet comprises the following steps: the prepared master batch is drawn into a sheet material in a multi-layer co-extrusion mode, and the multi-layer co-extrusion is carried out according to the following extrusion: a, 90% of main resin, 2% of DBS nucleating agent and 8% of toughening agent (copolymer of ethylene and propylene) by weight percentage in a machine A, wherein the rotating speed of a screw is 40-50 r/min, the extrusion pressure is 5-9MPa, and an upper layer of a high-transparent antifogging hydrophobic sheet is formed, and the layer ratio accounts for 90%; in the machine B, 90% by weight of main resin, 1% by weight of DBS nucleating agent and 9% by weight of toughening agent (copolymer of ethylene and propylene) are added, the rotating speed of a screw is 15-20r/min, the extrusion pressure is 4-6MPa, and a lower layer of the high-transparent antifogging hydrophobic sheet is formed, wherein the layer ratio accounts for 10%;
the sheet is rolled and cooled by a sheet puller to be stretched into a high-transparency antifogging hydrophobic sheet, and the thickness of the sheet is 400-600 mu m. The static mixer and the pressure after the mixer are controlled to be 13-15MPa to stabilize the sheet, the temperature is controlled to be 220-230 ℃, and the temperature of the calendering roller is 40-50 ℃. The temperature of the forming machine is set as follows: 390-450 deg.C, the temperature of the sheet material is controlled at 110-130 deg.C, and the pressure of the forming air is controlled at 0.3-0.4MPa.
The DBS nucleating agent is utilized to increase the crystallinity of the PP material, thereby increasing the transparency. PP without the nucleating agent is mainly subjected to homogeneous nucleation, crystals grow in a radioactive ray mode, spherical crystals are large and dispersed, the spacing between the crystals is large, and the crystal boundary is clear; after the nucleating agent DBS is added, the effective crystal nucleus is increased, the crystallinity is increased, the spherulite size is reduced, the crystal gap is small, the crystal boundary is fuzzy, and the density is obviously improved while the crystallinity is improved (see figure 1). The density of the PP modified by the nucleating agent is increased, the structure is more compact, the increase of the density causes difficulty in oxygen diffusion in a matrix, the concentration is lower, the initial degradation rate is effectively slowed down, and the thermo-oxidative aging resistance is improved (see figure 2). Therefore, the DBS nucleating agent can improve the oxidation resistance of polypropylene while improving the mechanical property and the optical property of PP.
The sheet material adopts a multi-layer co-extrusion structure and is divided into an upper layer and a lower layer, wherein the upper layer accounts for 90 percent and is a structural layer; the lower layer accounts for 10 percent and is a functional layer, and the antifogging effect of the product is realized by the lower layer. The structure can ensure that the antifogging effect is achieved on the premise of not influencing the properties of the product. The anti-fog auxiliary agent is added in the lower layer, so that the internal surfactant can be orderly arranged on the surface as soon as possible, and the product has anti-fog performance in the initial stage. Meanwhile, the antifogging master batch is only added into 10% of the sheets, so that compared with the whole layer addition, the use amount of the antifogging master batch can be greatly reduced, and the production cost is reduced.
A high-transparency hydrophobic anti-fog cover is prepared by blow molding the high-transparency anti-fog hydrophobic sheet. The surface of the forming mold is improved, the surface of the mold is polished, the surface of a formed product is smooth as much as possible, the wetting angle is reduced, small water drops can be quickly condensed into large water drops and quickly drop from the surface, and therefore the fact that few water drops adhere to the surface is guaranteed, and the anti-fog effect is achieved.
Embodiment 2, an antifogging master batch comprises the following raw materials in percentage by weight: 65% of homopolymerized polypropylene, 30% of antifogging agent, 3% of coupling agent, 1.8% of dispersing agent, 0.1% of antioxidant and 0.1% of ultraviolet absorbent.
The preparation method of the high-transparency antifogging hydrophobic sheet comprises the following steps: the prepared master batch is drawn into a sheet material in a multi-layer co-extrusion mode, and the multi-layer co-extrusion is carried out according to the following extrusion: 97 percent of main resin, 1 percent of DBS nucleating agent and 2 percent of toughening agent (copolymer of ethylene and propylene) by weight percentage in the machine A, the rotating speed of a screw is 40-50 r/min, the extrusion pressure is 5-9MPa, and an upper layer of the high-transparent antifogging hydrophobic sheet is formed, and the layer ratio accounts for 90 percent; in the machine B, 97 percent by weight of main resin, 2 percent by weight of DBS nucleating agent and 2 percent by weight of toughening agent (copolymer of ethylene and propylene) are adopted, the screw rotating speed is 15-20r/min, the extrusion pressure is 4-6MPa, and a lower layer of the high-transparent antifogging hydrophobic sheet is formed, wherein the layer ratio accounts for 10 percent. The rest is the same as example 1.
Embodiment 3, an antifogging master batch comprises the following raw materials in percentage by weight: 80% of homopolymerized polypropylene, 18% of antifogging agent, 1% of coupling agent, 0.5% of dispersing agent, 0.2% of antioxidant and 0.3% of ultraviolet absorbent.
The preparation method of the high-transparent antifogging hydrophobic sheet comprises the following steps: the prepared master batch is drawn into a sheet material in a multi-layer co-extrusion mode, and the multi-layer co-extrusion is extruded according to the following steps: in the machine A, 95 percent by weight of main resin, 0.3 percent by weight of DBS nucleating agent and 4.7 percent by weight of toughening agent (copolymer of ethylene and propylene) are adopted, the rotating speed of a screw is 40-50 r/min, the extrusion pressure is 5-9MPa, and an upper layer of a high-transparent antifogging hydrophobic sheet is formed, wherein the layer ratio accounts for 90 percent; in the machine B, 92% of main resin, 0.3% of DBS nucleating agent and 7.7% of toughening agent (copolymer of ethylene and propylene) by weight percentage are adopted, the rotating speed of a screw is 15-20r/min, the extrusion pressure is 4-6MPa, and a lower layer of the high-transparency antifogging hydrophobic sheet is formed, wherein the layer ratio accounts for 10%. The rest is the same as example 1.
Embodiment 4, an antifogging master batch comprises the following raw materials in percentage by weight: 81% of homopolymerized polypropylene, 15% of antifogging agent, 2% of coupling agent, 1.5% of dispersing agent, 0.3% of antioxidant and 0.2% of ultraviolet absorbent.
The preparation method of the high-transparent antifogging hydrophobic sheet comprises the following steps: the prepared master batch is drawn into a sheet material in a multi-layer co-extrusion mode, and the multi-layer co-extrusion is carried out according to the following extrusion: a, forming an upper layer of a high-transparent antifogging hydrophobic sheet by using 95% by weight of main resin, 1% by weight of DBS nucleating agent and 4% by weight of toughening agent (copolymer of ethylene and propylene) in a machine A, wherein the rotating speed of a screw is 40-50 r/min, the extrusion pressure is 5-9MPa, and the layer ratio accounts for 90%; in the machine B, 93.5 percent by weight of main resin, 0.5 percent by weight of DBS nucleating agent and 6 percent by weight of toughening agent (copolymer of ethylene and propylene) are adopted, the rotating speed of a screw is 15-20r/min, the extrusion pressure is 4-6MPa, and a lower layer of the high-transparent antifogging hydrophobic sheet is formed, wherein the layer ratio accounts for 10 percent. The rest is the same as example 1.
Embodiment 5, an antifogging master batch comprises the following raw materials in percentage by weight: 67% of homopolymerized polypropylene, 30% of antifogging agent, 2% of coupling agent, 0.5% of dispersing agent, 0.1% of antioxidant and 0.4% of ultraviolet absorbent.
The preparation method of the high-transparent antifogging hydrophobic sheet comprises the following steps: the prepared master batch is drawn into a sheet material in a multi-layer co-extrusion mode, and the multi-layer co-extrusion is carried out according to the following extrusion: in the machine A, 92% of main resin, 1% of DBS nucleating agent and 7% of toughening agent (copolymer of ethylene and propylene) by weight percentage are adopted, the rotating speed of a screw is 40-50 r/min, the extrusion pressure is 5-9MPa, and an upper layer of a high-transparent antifogging hydrophobic sheet is formed, wherein the layer ratio accounts for 90%; in the machine B, 94.5 percent by weight of main resin, 0.5 percent by weight of DBS nucleating agent and 5 percent by weight of toughening agent (copolymer of ethylene and propylene) are added, the rotating speed of a screw is 15-20r/min, the extrusion pressure is 4-6MPa, and a lower layer of the high-transparent antifogging hydrophobic sheet is formed, wherein the layer ratio accounts for 10 percent. The rest is the same as example 1.
Embodiment 6, an antifogging master batch comprises the following raw materials in percentage by weight: 85% of homopolymerized polypropylene, 10% of antifogging agent, 3% of coupling agent, 1.6% of dispersing agent, 0.2% of antioxidant and 0.2% of ultraviolet absorbent.
The preparation method of the high-transparency antifogging hydrophobic sheet comprises the following steps: the prepared master batch is drawn into a sheet material in a multi-layer co-extrusion mode, and the multi-layer co-extrusion is extruded according to the following steps: a, forming an upper layer of a high-transparent antifogging hydrophobic sheet by using 92% by weight of main resin, 0.8% by weight of DBS nucleating agent and 7.2% by weight of toughening agent (copolymer of ethylene and propylene) in a machine, wherein the rotating speed of a screw is 40-50 r/min, the extrusion pressure is 5-9MPa, and the layer ratio accounts for 90%; in the machine B, 96% of main resin, 1% of DBS nucleating agent and 3% of toughening agent (copolymer of ethylene and propylene) by weight percentage are adopted, the screw rotation speed is 15-20r/min, the extrusion pressure is 4-6MPa, and a lower layer of the high-transparent antifogging hydrophobic sheet is formed, wherein the layer ratio accounts for 10%. The rest is the same as example 1.
Different from the prior art, the anti-fog master batch, the preparation method of the high-transparent anti-fog hydrophobic sheet and the high-transparent hydrophobic anti-fog cover are provided, the anti-fog master batch has good anti-fog and hydrophobic properties, and the sheet formed by multi-layer co-extrusion of the anti-fog master batch, the DBS nucleating agent and the main body resin has good hydrophobic property and high transparency, so that the fog drop phenomenon of the high-transparent hydrophobic anti-fog cover is improved.
The present invention and its embodiments have been described above schematically, and the description is not intended to be limiting, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims (10)

1. The antifogging master batch is characterized by comprising the following raw materials in percentage by weight: 65-85% of homopolymerized polypropylene, 10-30% of antifogging agent, 1-3% of coupling agent, 0.5-2% of dispersing agent, 0.1-0.4% of antioxidant and 0.1-0.4% of ultraviolet absorbent, wherein the antifogging agent is at least two of glycerin fatty acid ester, sorbitan monooleate and ethylene oxide addition product of glycerin monooleate or sorbitan monooleate, the coupling agent is selected from titanate coupling agent, and the antioxidant is compound antioxidant.
2. The antifog masterbatch of claim 1, wherein the antioxidant is a hindered phenolic antioxidant or a phosphite antioxidant.
3. The anti-fog masterbatch of claim 1, wherein the homo-polypropylene has a melt index of 2-3g/10min.
4. The antifog masterbatch of claim 1, wherein the dispersing agent is polyethylene wax.
5. The antifog masterbatch of claim 1, wherein the coupling agent is a monoalkoxy pyrophosphate-type titanate.
6. The antifog masterbatch of claim 1, wherein the ultraviolet absorber is UV326.
7. A preparation method of a high-transparency antifogging hydrophobic sheet is characterized by comprising the following steps:
a. mixing 65-85% of homo-polypropylene, 10-30% of antifogging agent, 1-3% of coupling agent, 0.5-2% of dispersing agent, 0.1-0.4% of antioxidant and 0.1-0.4% of ultraviolet absorbent through a high-speed mixer, extruding the melt through a double-screw extruder, and granulating, drying and cooling the melt to prepare antifogging master batch;
b. b, drawing the antifogging master batches prepared in the step a into sheets through multi-layer coextrusion, wherein the upper layer is prepared by mixing and extruding 90-97% by weight of main body resin, 0.3-2% by weight of DBS nucleating agent and 2-8% by weight of toughening agent, and the layer ratio accounts for 90%; the lower layer is prepared by mixing and extruding 90-97 wt% of main resin, 0.3-1 wt% of DBS nucleating agent and 2-9 wt% of toughening agent, and the layer ratio is 10%;
c. the sheet is rolled and cooled by a sheet puller to be stretched into a high-transparency antifogging hydrophobic sheet, and the thickness of the sheet is 400-600 mu m.
8. The preparation method of the highly transparent antifogging hydrophobic sheet according to claim 7, wherein in step b, the screw rotation speed in the upper layer extrusion process is 40-50 r/min, the extrusion pressure is 5-9Mpa, the screw rotation speed in the lower layer extrusion process is 15-20r/min, and the extrusion pressure is 4-6Mpa.
9. The method for preparing the highly transparent antifogging hydrophobic sheet according to claim 8, wherein the host resin of step b is polypropylene copolymer and the toughening agent is a copolymer of ethylene and propylene.
10. A highly transparent hydrophobic anti-fog cap, characterized in that the highly transparent hydrophobic anti-fog cap is made by blow molding the highly transparent anti-fog hydrophobic sheet prepared according to claim 7.
CN202210814193.9A 2022-07-12 2022-07-12 Anti-fog master batch, preparation method of high-transparent anti-fog hydrophobic sheet and high-transparent hydrophobic anti-fog cover Pending CN115260648A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210814193.9A CN115260648A (en) 2022-07-12 2022-07-12 Anti-fog master batch, preparation method of high-transparent anti-fog hydrophobic sheet and high-transparent hydrophobic anti-fog cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210814193.9A CN115260648A (en) 2022-07-12 2022-07-12 Anti-fog master batch, preparation method of high-transparent anti-fog hydrophobic sheet and high-transparent hydrophobic anti-fog cover

Publications (1)

Publication Number Publication Date
CN115260648A true CN115260648A (en) 2022-11-01

Family

ID=83765959

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210814193.9A Pending CN115260648A (en) 2022-07-12 2022-07-12 Anti-fog master batch, preparation method of high-transparent anti-fog hydrophobic sheet and high-transparent hydrophobic anti-fog cover

Country Status (1)

Country Link
CN (1) CN115260648A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103831976A (en) * 2014-02-23 2014-06-04 青岛中科昊泰新材料科技有限公司 Method for preparing strong-strength composite plastic film

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103831976A (en) * 2014-02-23 2014-06-04 青岛中科昊泰新材料科技有限公司 Method for preparing strong-strength composite plastic film

Similar Documents

Publication Publication Date Title
US5073316A (en) Process for producing a porous film
US6281290B1 (en) Compositions, processes for making, and articles of polyolefins, high density polyethylene and hydrocarbon resin
CN114702789B (en) High-light-transmittance polyester film and manufacturing method thereof
US3975355A (en) Films and sheets of polyester-polycarbonate blends
CN109836667A (en) A kind of manufacture craft of polyethylene opening agent masterbatch composition
US4029631A (en) Polyester sheet containing antiblock agent added in degradable polycarbonate
EP4375048A1 (en) Polyhydroxyalkanoate molded body and preparation method therefor
CN111978644A (en) Polypropylene breathable film and preparation method thereof
CN116218162A (en) PET extinction master batch and preparation method thereof
JP2018131604A (en) Antifogging polypropylene film
CN107641307A (en) A kind of lined polymethyl ethylene carbonate/polyvinyl alcohol degradable composite material and preparation method thereof
CN115260648A (en) Anti-fog master batch, preparation method of high-transparent anti-fog hydrophobic sheet and high-transparent hydrophobic anti-fog cover
CN113462132A (en) Biodegradable composite material, preparation method thereof and biodegradable breathable film
JP2016060909A (en) Antifogging agent for thermoplastic resin and thermoplastic resin composition containing the same
CN111518329A (en) High-content antifogging master batch taking white carbon black as oil storage slow-release agent and production process thereof
CN108976664B (en) Preparation method of packaging film material for food preservation
CN110272551A (en) A kind of polylactic acid film and preparation method thereof
JPS6316256B2 (en)
US4175147A (en) Method to reduce deposits of terephthalic acid on cooling rolls during sheet extrusion of amorphous polyethylene terephthalate
JPH032651B2 (en)
CN111073122B (en) Polyethylene composition and preparation method thereof
CN110643104A (en) Film and preparation method thereof
JPS58185224A (en) Preparation of polypropylene sheet used for packaging
WO2013141126A1 (en) Polylactic acid resin composition and polylactic acid film obtained by molding same
KR102187020B1 (en) Composition for lusterless layer and the lusterless film manufacturing method using the composition

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination