CN113290965B - High-filling easy-printing logistics packaging material and preparation method thereof - Google Patents

High-filling easy-printing logistics packaging material and preparation method thereof Download PDF

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CN113290965B
CN113290965B CN202110508193.1A CN202110508193A CN113290965B CN 113290965 B CN113290965 B CN 113290965B CN 202110508193 A CN202110508193 A CN 202110508193A CN 113290965 B CN113290965 B CN 113290965B
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parts
layer
packaging material
composite
component
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CN113290965A (en
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贺军
戴菊霞
张斌
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Guangzhou Sumitomo Commercial Co ltd
Tenaiwang Huili Plastic Products Wuxi Co ltd
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Guangzhou Sumitomo Commercial Co ltd
Tenaiwang Huili Plastic Products Wuxi Co ltd
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    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • 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
    • B32B27/065—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 of foam
    • 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
    • B32B27/42—Layered products comprising a layer of synthetic resin comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes
    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0066—Use of inorganic compounding ingredients
    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
    • C08J9/141—Hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
    • 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
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0221—Vinyl 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
    • B32B2266/00—Composition of foam
    • B32B2266/12—Gel
    • B32B2266/126—Aerogel, i.e. a supercritically dried gel
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/75—Printability
    • 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
    • B32B2553/00—Packaging equipment or accessories not otherwise provided for
    • B32B2553/02—Shock absorbing
    • 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
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
    • 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
    • C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
    • C08J2361/04—Condensation polymers of aldehydes or ketones with phenols only
    • C08J2361/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
    • 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
    • C08J2425/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
    • C08J2425/02—Homopolymers or copolymers of hydrocarbons
    • C08J2425/04—Homopolymers or copolymers of styrene
    • C08J2425/06—Polystyrene
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    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

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  • Health & Medical Sciences (AREA)
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  • Polymers & Plastics (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Buffer Packaging (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a high-filling easy-printing logistics packaging material and a preparation method thereof, the logistics packaging material disclosed by the invention is a composite packaging material consisting of a three-layer membrane structure, wherein the first layer is an anti-collision layer and is a composite material consisting of calcium carbonate, hyperbranched epoxy resin and ultrahigh molecular weight polyethylene; the second layer is an insulating layer and is made of EPS/phenolic resin/silicon dioxide aerogel composite material; the third layer is a buffer layer which is a paper fiber/EVA composite foaming material, and finally the three-layer board is pre-pressed, hot-dried and hot-rolled to prepare the high-performance three-layer composite packaging material. The multilayer composite logistics packaging material disclosed by the invention has excellent impact resistance, mechanical strength, heat preservation and buffering property, and has better ink absorption property, high printing definition and excellent comprehensive performance by adding ink absorption agent silicon dioxide to the anti-collision layer.

Description

High-filling easy-printing logistics packaging material and preparation method thereof
Technical Field
The invention relates to the technical field of packaging, in particular to a high-filling easy-printing logistics packaging material and a preparation method thereof.
Background
With the development of modern technology, the internet becomes an indispensable part of people's lives, and meanwhile, statistically about 80 network users choose to shop online as far as 2020, the enormous demand of network shopping makes logistics transportation become a popular industry in recent years. However, the product quality is affected by the possible collision, friction and temperature change in the environment during the logistics transportation of the goods, so the improvement of the logistics transportation packaging material becomes a popular research direction in recent years.
The literature (Zhang Hailong, Zhang Lei, Zhengpeng, etc.. preparation and performance research of biodegradable polyurethane foam for cushion packaging [ J ] polyurethane, 2008(2):94-96.) researches that in the process of preparing PU foam, corn starch, wood dust, waste textile cotton, viscose fiber, etc. which can be quickly degraded by biology are added for foaming together to prepare a biodegradable PU foam, and the packaging material has better cushion performance. Hybrid Composites with single Matrix/double fiber, double Matrix/single fiber and double Matrix/double fiber laminate are studied in the literature (C.J.WangB.Z.J.ang.J.J.J.Panus B.T.Valaire.Impact Behavior of Hybrid-fiber r and-Hybrid-Matrix composites.journal of recycled plastics and Composites, 1991, 10: 356.378.) and applied to packaging materials greatly improve the impact resistance of the materials.
Although various high-performance packaging materials have been produced by modifying and compounding materials in the above documents, none of these materials has other excellent properties such as impact resistance, cushioning properties, and heat retaining properties.
The invention content is as follows:
in order to solve the existing problems, the invention provides a high-filling easy-printing logistics packaging material and a preparation method thereof.
The packaging material provided by the invention is formed by three layers of plates through prepressing, hot drying and hot rolling compounding, wherein the first layer is an anti-collision layer formed by a calcium carbonate/hyperbranched epoxy resin/ultra-high molecular weight polyethylene composite material; the second layer is an insulation layer made of EPS/phenolic resin/silicon dioxide aerogel composite material; the third layer is a buffer layer made of paper fiber/EVA composite foaming material.
The specific preparation scheme is as follows:
a first layer: the calcium carbonate/hyperbranched epoxy resin/ultrahigh molecular weight polyethylene fiber composite material comprises 30-60 parts of calcium carbonate, 1-3 parts of anti-aging agent, 5-8 parts of flame retardant, 5-10 parts of impact modifier, 20-30 parts of hyperbranched epoxy resin, 10-30 parts of ultrahigh molecular weight polyethylene fiber and 20-40 parts of ink absorber silicon dioxide.
The calcium carbonate/hyperbranched epoxy resin/ultrahigh molecular weight polyethylene fiber composite material is prepared by the following specific steps:
(1) the hyperbranched epoxy resin is synthesized by the following steps: according to the mass ratio of 10: 1 mixing E-51 epoxy resin with the pentaerythritol, sequentially adding E-513 mass percent boron trifluoride ether solution and E-5150 mass percent propylene glycol methyl ether, heating to 60 ℃, stirring for reaction for 4 hours, and finally carrying out reduced pressure distillation to remove the solvent.
(2) Preparation of ink absorber silicon dioxide:
taking Na with the same molar weight 2 SiO 3 、Na 2 SO 4 Dissolving in water to obtain Na2SiO3-Na2SO4 solution;
adding the solution into a three-neck flask (with a condensation reflux device), heating and stirring at 130 ℃, dropwise adding a sulfuric acid solution with a certain concentration into the system for 5min till the pH value is about 4, keeping the temperature for reaction for 30min, filtering, washing with water, drying and crushing to obtain an ink absorbent SiO 2 ；
(3) Preparing a composite material:
heating the ultrahigh molecular weight polyethylene in an electric heating air blowing constant-temperature drying oven at 120 ℃ for 1h, accurately weighing each component material, then adding the components material into a kneading machine to fully and uniformly mix the components material, pouring the kneaded mixture into a preheated mold, quickly placing the mold into a vacuum drying oven, and drying to obtain the calcium carbonate/epoxy resin/ultrahigh molecular weight polyethylene composite material.
In some embodiments of the invention, the anti-aging agent is anti-aging agent 4010 NA.
In some embodiments of the invention, the ultra-high molecular weight polyethylene fibers are UHMWPE chopped fibers.
In some embodiments of the invention, the impact modifier is ABS and/or MBS.
A second layer: the EPS/phenolic resin/silicon dioxide aerogel composite material comprises a component A and a component B, wherein the component A comprises 60-70 parts of phenolic resin and SiO 2 30-50 parts of aerogel, 2-5 parts of adhesive, 2-5 parts of surfactant, 15-25 parts of curing agent and 10-20 parts of foaming agent, wherein the component B is EPS beads, and the mass ratio of the EPS beads to the phenolic resin is 7: 8-9.
The EPS/phenolic resin/silicon dioxide aerogel composite material is prepared by the following specific steps:
(1) fully stirring the weighed phenolic resin, the silica aerogel, the adhesive and the surfactant at normal temperature by using a stirrer until the mixture is uniform, adding the foaming agent, continuously stirring until the system is uniform, and finally adding the curing agent, and continuously stirring until the system is uniform;
(2) adding EPS beads into the uniformly stirred system, and fully and uniformly mixing the EPS beads by using a kneader (mixing time is 5 min);
(3) pouring the kneaded mixture into a preheated mold, and quickly placing the mold into a vacuum drying oven (mold pressing temperature is 50-80 ℃, mold pressing time is 3 min);
(4) and taking out the sample after the sample is completely cured.
In some embodiments of the invention, the phenolic resin type in component A is PF-7013-2.
In some embodiments of the present invention, the adhesive in component a is silica sol and polyaluminium chloride in a mass ratio of 1: 3, a compound system.
In some embodiments of the present invention, the curing agent in component A is HCL, H 3 PO 4 P-toluenesulfonic acid in a molar ratio of 1: 1: 2.
In some embodiments of the present invention, the surfactant in component a is a water-soluble silicone oil.
In some embodiments of the invention, the blowing agent in component a is n-pentane and/or cyclopentane.
And a third layer: the paper fiber/EVA composite foaming material comprises: 100 parts of EVA, 40-50 parts of paper fiber, 0.5-2 parts of nucleating agent, foaming agent) 5-10 parts, 1-2 parts of cross-linking agent, 2-5 parts of adhesive, 3-5 parts of softener and 5-10 parts of distilled water.
The specific preparation steps of the paper fiber/EVA composite foaming material are as follows:
(1) pretreatment of paper fibers: using a hydrapulper to high-speed disintegrate corrugated board fibers, adding the disintegrated paper fibers into a mixture of KH550 and ethanol according to a volume ratio of 2: 5, stirring the mixed solution at a high speed of 60 ℃ for 15min, placing the uniformly mixed solution in a 110 ℃ oven for more than 12 hours, and drying;
(2) mixing starch and distilled water according to a volume ratio of 1: 2-3, heating to 70 ℃, stirring at a stirring speed of 300r/min for 15min, taking out after starch is completely gelatinized, and cooling to room temperature to be used as an adhesive for later use;
(3) putting 100 parts of EVA, 40-50 parts of paper fiber, 0.5-2 parts of nucleating agent, 5-10 parts of foaming agent, 1-2 parts of cross-linking agent, 2-5 parts of adhesive, 3-5 parts of softener and 5-10 parts of distilled water into a high-speed mixer, mixing for 30min at 80 ℃, and discharging;
(4) putting the mixed material instrument into a double-roll open mill for mixing (the mixing temperature is 125 ℃, and the mixing time is 15 min); and (3) after the sheet is taken out, foaming by using a flat vulcanizing machine, wherein the mould pressing temperature is 175 ℃, the mould forming pressure is 10Mpa, and the mould forming time is 10 min.
In some embodiments of the invention, the EVA has a VA content of 15%.
In some embodiments of the invention, the paper fibers are corrugated board fibers.
In some embodiments of the invention, the nucleating agent is nano calcium carbonate.
In some embodiments of the invention, the foaming agent is a mixture of AC and zinc oxide in a mass ratio of 1: 1, and (b) a compound system.
In some embodiments of the invention, the cross-linking agent is selected from one or more of zinc oxide, sulphur, borax.
In some embodiments of the invention, the adhesive is corn starch and/or potato starch.
In some embodiments of the invention, the softener is selected from one or more of rapeseed oil, glycerol, palm oil.
Preparing a composite packaging material: and finally, prepressing, baking and hot rolling the three-layer plate (the hot rolling temperature is 200 ℃ and the hot rolling pressure is 7Mpa) to prepare the high-performance three-layer composite packaging material.
The invention brings the following benefits:
1. according to the first anti-collision layer, the material has excellent impact resistance and mechanical property by filling the ultra-high molecular weight polyethylene and adding the impact resistance modifier, a remarkable toughening effect can be obtained by adding the hyperbranched epoxy resin with a spherical three-dimensional structure into a system, and the hyperbranched epoxy resin has more active end groups, so that the crosslinking reaction with polyurethane can be accelerated, and the compatibility of the system can be improved; according to the invention, the self-made ink absorber silicon dioxide is used as a filler and added into the first layer system, so that the ink absorption performance of the resin is improved, the ink absorption rate of the material is high, and the printing definition is high; in addition, the addition amount of calcium carbonate serving as a filler in the anti-collision layer reaches 50%, so that the production cost is greatly reduced, and the product has excellent mechanical properties and impact resistance.
2. The second layer of the material of the invention takes the silicon dioxide aerogel as the filler system, so that the heat conductivity coefficient is reduced, and the heat insulation performance of the composite material is improved.
3. According to the invention, waste corrugated board fibers are used as paper fiber raw materials in the third layer of material, the waste is utilized, the environment is protected, and the EVA/paper fiber composite material with excellent buffering performance is prepared by selecting proper nucleating agent, crosslinking agent and softening agent and performing mould pressing, crosslinking and foaming.
4. The high-filling easy-printing composite logistics packaging material prepared from the three layers of materials with excellent performances by the hot-pressing composite technology has excellent impact resistance, heat preservation, buffering performance and printing performance, and is environment-friendly. The preparation method of the three materials disclosed by the invention is not limited to the application of logistics packaging materials, and can be applied to the fields of buildings, aviation, transportation, medical treatment and the like.
Detailed Description
The invention will be illustrated below with reference to specific embodiments. It should be noted that the following examples are illustrative of the present invention, and are not intended to limit the present invention. Other combinations and various modifications within the spirit or scope of the present invention may be made without departing from the spirit or scope of the present invention.
Example 1
A first layer: 33 parts of calcium carbonate, 1 part of age resister 4010NA, 5 parts of flame retardant tricresyl phosphate, 5 parts of impact resistance modifier ABS, 30 parts of hyperbranched epoxy resin, 10 parts of ultrahigh molecular weight polyethylene and 20 parts of ink absorber silicon dioxide.
A second layer: the component A comprises: 70 parts of phenolic resin and SiO 2 30 parts of aerogel, 2 parts of adhesive, 5 parts of curing agent, and 10 parts of foaming agent n-pentane; the component B is EPS beads, and the mass ratio of the EPS beads to the phenolic resin is 7: 8.
and a third layer: the buffer layer includes: 100 parts of EVA, 40 parts of paper fiber, 0.5 part of nucleating agent nano calcium carbonate, 5 parts of foaming agent (AC and zinc oxide are compounded according to the mass ratio of 1: 1), 1 part of cross-linking agent zinc oxide, 2 parts of adhesive corn starch, 5 parts of softener rapeseed oil and 10 parts of distilled water.
Thickness: the first layer is 5mm, the second layer is 5mm and the third layer is 5 mm.
Example 2
A first layer: 46 parts of calcium carbonate, 2 parts of anti-aging agent 4010NA, 6 parts of flame retardant tricresyl phosphate, 5 parts of impact modifier ABS, 30 parts of hyperbranched epoxy resin, 30 parts of ultrahigh molecular weight polyethylene and 25 parts of ink absorber silicon dioxide.
A second layer: the component A comprises: 65 parts of phenolic resin and SiO 2 30 parts of aerogel, 3 parts of adhesive, 5 parts of surfactant, 20 parts of curing agent and 15 parts of foaming agent cyclopentane; the component B is EPS beads, and the mass ratio of the EPS beads to the phenolic resin is 7: 8.
and a third layer: the buffer layer includes: 100 parts of EVA, 45 parts of paper fiber, 1 part of nucleating agent nano calcium carbonate, 7 parts of foaming agent (AC and zinc oxide are compounded according to the mass ratio of 1: 1), 1 part of cross-linking agent sulfur, 5 parts of adhesive potato starch, 5 parts of softener glycerol and 10 parts of distilled water. Thickness: the first layer is 5mm, the second layer is 3mm and the third layer is 3 mm.
Example 3
A first layer: 46 parts of calcium carbonate, 4010NA 2 parts of anti-aging agent, 5 parts of flame retardant tricresyl phosphate, 5 parts of impact modifier MBS, 25 parts of hyperbranched epoxy resin, 30 parts of ultra-high molecular weight polyethylene and 30 parts of ink absorber silicon dioxide.
A second layer: the component A comprises: phenolic resin 60 parts, SiO 2 50 parts of aerogel, 2 parts of adhesive, 4 parts of surfactant, 20 parts of curing agent and 20 parts of foaming agent n-pentane; the component B is EPS beads, and the mass ratio of the EPS beads to the phenolic resin is 7: 8.2.
and a third layer: the buffer layer includes: 100 parts of EVA, 50 parts of paper fiber, 2 parts of nucleating agent nano calcium carbonate, 6 parts of foaming agent (AC and zinc oxide are compounded according to the mass ratio of 1: 1), 2 parts of cross-linking agent borax, 5 parts of adhesive potato starch, 3 parts of softener palm oil and 10 parts of distilled water.
Thickness: the first layer is 5mm, the second layer is 3mm and the third layer is 5 mm.
Example 4
A first layer: 36 parts of calcium carbonate, 2 parts of anti-aging agent 4010NA, 5 parts of flame retardant tricresyl phosphate, 5 parts of impact modifier ABS, 25 parts of hyperbranched epoxy resin, 20 parts of ultrahigh molecular weight polyethylene and 20 parts of ink absorber silicon dioxide.
A second layer: the component A comprises: 70 parts of phenolic resin and SiO 2 40 parts of aerogel, 3 parts of adhesive, 3 parts of surfactant, 15 parts of curing agent and 20 parts of foaming agent n-pentane; the component B is EPS beads, and the mass ratio of the EPS beads to the phenolic resin is 7: 8.5.
and a third layer: the buffer layer includes: 100 parts of EVA, 45 parts of paper fiber, 2 parts of nucleating agent nano calcium carbonate, 6 parts of foaming agent (AC and zinc oxide are compounded according to the mass ratio of 1: 1), 1.5 parts of cross-linking agent sulfur, 4 parts of adhesive potato starch, 5 parts of softener palm oil and 10 parts of distilled water.
Thickness: the first layer is 3mm, the second layer is 3mm and the third layer is 3 mm.
Example 5
A first layer: 55 parts of calcium carbonate, 2 parts of anti-aging agent 4010NA, 6 parts of flame retardant tricresyl phosphate, 8 parts of impact modifier ABS, 30 parts of hyperbranched epoxy resin, 30 parts of ultrahigh molecular weight polyethylene and 40 parts of ink absorber silicon dioxide.
A second layer: the component A comprises: 70 parts of phenolic resin and SiO 2 50 parts of aerogel, 5 parts of adhesive, 4 parts of surfactant, 15 parts of curing agent and 20 parts of foaming agent n-pentane; the component B is EPS beads, and the mass ratio of the EPS beads to the phenolic resin is 7: 8.5.
and a third layer: the buffer layer includes: 100 parts of EVA, 40 parts of paper fiber, 1 part of nucleating agent nano calcium carbonate, 8 parts of foaming agent (AC and zinc oxide are compounded according to the mass ratio of 1: 1), 2 parts of cross-linking agent borax, 4 parts of adhesive corn starch, 3 parts of softener glycerol and 10 parts of distilled water. Thickness: the first layer is 8mm, the second layer is 3mm, and the third layer is 3 mm.
Example 6
A first layer: 47 parts of calcium carbonate, 3 parts of anti-aging agent 4010NA, 6 parts of flame retardant tricresyl phosphate, 10 parts of impact modifier ABS, 25 parts of hyperbranched epoxy resin, 20 parts of ultrahigh molecular weight polyethylene and 35 parts of ink absorber silicon dioxide.
A second layer: the component A comprises: 60 parts of phenolic resin and SiO 2 40 parts of aerogel, 3 parts of adhesive, 2.5 parts of surfactant, 20 parts of curing agent and 15 parts of foaming agent n-pentane.
The component B is EPS beads, and the mass ratio of the addition amount of the EPS beads to the phenolic resin is 7: 9.
and a third layer: the buffer layer includes: 100 parts of EVA, 50 parts of paper fiber, 2 parts of nucleating agent nano calcium carbonate, 5 parts of foaming agent (AC and zinc oxide are compounded according to the mass ratio of 1: 1), 1.5 parts of cross-linking agent borax, 3 parts of adhesive corn starch, 3 parts of softener glycerol and 8 parts of distilled water. Thickness: the first layer is 5mm, the second layer is 2mm and the third layer is 4 mm.
Example 7
A first layer: 52 parts of calcium carbonate, 2.5 parts of age resister 4010NA, 6 parts of flame retardant tricresyl phosphate, 10 parts of impact resistance modifier MBS, 30 parts of hyperbranched epoxy resin, 30 parts of ultrahigh molecular weight polyethylene and 30 parts of ink absorber silicon dioxide.
A second layer: the component A comprises: 70 parts of phenolic resin and SiO 2 30 parts of aerogel, 2 parts of adhesive, 5 parts of surfactant, 18 parts of curing agent and 15 parts of foaming agent n-pentane; the component B is EPS beads, and the mass ratio of the EPS beads to the phenolic resin is 7: 8.8.
and a third layer: the buffer layer includes: 100 parts of EVA, 45 parts of paper fiber, 0.5 part of nucleating agent nano calcium carbonate, 8 parts of foaming agent, 2 parts of cross-linking agent zinc oxide, 5 parts of adhesive potato starch, 3 parts of softener glycerol and 10 parts of distilled water.
Thickness: the first layer is 3mm, the second layer is 5mm and the third layer is 5 mm.
And (3) performance testing:
the method for testing the impact strength comprises the following steps: the test specimens were 80 × 10 × 4mm in size and the notch depth was one third of the specimen thickness, according to GB/T1043.
The static buffer coefficient testing method comprises the following steps: according to the test method recommended by GB/T8168-2008, the method of applying compressive load on the sample at low speed is adopted to obtain the compressive stress-compressive strain curve of the buffer material, and the specific elastic energy and the buffer coefficient of the material are obtained by utilizing the curve.
Thirdly, a heat conductivity coefficient testing method: the test was carried out with reference to ISO 22007-2-2008.
Figure BDA0003039170870000111
From the data, the high-filling easy-printing logistics packaging material provided by the invention has good impact resistance, heat preservation performance and buffering performance.

Claims (7)

1. The high-filling easy-printing logistics packaging material is characterized by being formed by pre-pressing, hot drying and hot rolling compounding of three layers of plates, wherein the first layer is an anti-collision layer made of calcium carbonate/hyperbranched epoxy resin/ultrahigh molecular weight polyethylene composite material; the second layer is an insulation layer made of EPS/phenolic resin/silicon dioxide aerogel composite material; the third layer is a buffer layer made of paper fiber/EVA composite foaming material;
the calcium carbonate/hyperbranched epoxy resin/ultrahigh molecular weight polyethylene fiber composite material comprises 30-60 parts of calcium carbonate, 1-3 parts of anti-aging agent, 5-8 parts of flame retardant, 5-10 parts of impact modifier, 20-30 parts of hyperbranched epoxy resin, 10-30 parts of ultrahigh molecular weight polyethylene fiber and 20-40 parts of ink absorber silicon dioxide;
the EPS/phenolic resin/silicon dioxide aerogel composite material comprises a component A and a component B, wherein the component A comprises 60-70 parts of phenolic resin and SiO 2 30-50 parts of aerogel, 2-5 parts of adhesive, 2-5 parts of surfactant, 15-25 parts of curing agent and 10-20 parts of foaming agent, wherein the component B is EPS beads;
the paper fiber/EVA composite foaming material comprises 100 parts of EVA, 40-50 parts of paper fiber, 0.5-2 parts of nucleating agent, 5-10 parts of foaming agent, 1-2 parts of cross-linking agent, 2-5 parts of adhesive, 3-5 parts of softener and 5-10 parts of distilled water.
2. The high-filling easy-to-print logistics packaging material of claim 1, wherein the aging inhibitor is aging inhibitor 4010 NA; the ultra-high molecular weight polyethylene fiber is UHMWPE chopped fiber; the impact modifier is ABS and/or MBS.
3. The highly filled, easily printable, logistics packaging material of claim 1, wherein the hyperbranched epoxy resin is synthesized by the steps of: according to the mass ratio of 10: 1 mixing E-51 epoxy resin and pentaerythritol, sequentially adding boron trifluoride ether solution accounting for 3% of the total mass of the E-51 epoxy resin and propylene glycol methyl ether accounting for 50% of the total mass of the E-51 epoxy resin, heating to 60 ℃, stirring for reacting for 4 hours, and finally, distilling under reduced pressure to remove the solvent.
4. The highly filled, print-receptive, logistics wrap of claim 1 wherein said mass ratio of EPS beads to phenolic resin is from 7: 8-9.
5. The highly filled, print-receptive, logistics wrap of claim 1 wherein said EPS/phenolic resin/silica aerogel composite is comprised of: the type of the phenolic resin in the component A is PF-7013-2; the adhesive is prepared from silica sol and polyaluminium chloride according to the mass ratio of 1: 3, a compound system; the curing agent is HCL and H 3 PO 4 P-toluenesulfonic acid in a molar ratio of 1: 1: 2, a compound system; the surfactant is water-soluble silicone oil; the foaming agent is n-pentane and/or cyclopentane.
6. The high-fill easy-to-print logistics packaging material of claim 1, wherein in the paper fiber/EVA composite foam material: the content of VA in the EVA is 15%; the paper fiber is corrugated board fiber; the nucleating agent is nano calcium carbonate; the foaming agent is prepared from AC and zinc oxide according to a mass ratio of 1: 1, a compounding system; the cross-linking agent is selected from one or more of zinc oxide, sulfur and borax; the adhesive is corn starch and/or potato starch; the softener is selected from one or more of rapeseed oil, glycerol and palm oil.
7. A high-fill, easy-to-print logistics packaging material of claim 1,
the preparation method of the anti-collision layer comprises the following steps: accurately weighing the materials of each component, adding the materials into a kneader to be fully and uniformly mixed, pouring the kneaded mixture into a preheated mold, quickly placing the mold into a vacuum drying box, and drying to obtain a sample;
the preparation method of the heat-insulating layer comprises the following steps: accurately weighing and uniformly mixing the component A, then adding the component A and the component B into a kneader according to a ratio to be fully and uniformly mixed, pouring the kneaded mixture into a preheated mold, quickly placing the mold into a vacuum drying oven, and drying to obtain a sample;
the preparation method of the buffer layer comprises the following steps: pretreating paper fibers, namely adding the treated paper fibers, EVA and other auxiliaries into a double-roll open mill in batches for mixing, and foaming by using a flat vulcanizing machine after sheet discharge;
and finally, prepressing, baking and hot rolling the three-layer plate to prepare the high-performance three-layer composite packaging material.
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