CN106965517A - A kind of rust-preventing film and preparation method thereof - Google Patents
A kind of rust-preventing film and preparation method thereof Download PDFInfo
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- CN106965517A CN106965517A CN201710206648.8A CN201710206648A CN106965517A CN 106965517 A CN106965517 A CN 106965517A CN 201710206648 A CN201710206648 A CN 201710206648A CN 106965517 A CN106965517 A CN 106965517A
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
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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
- 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
- B32B27/08—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 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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special 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
- 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
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/552—Fatigue strength
-
- 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
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/582—Tearability
- B32B2307/5825—Tear resistant
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
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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
- B32B2323/00—Polyalkenes
- B32B2323/04—Polyethylene
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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
- B32B2323/00—Polyalkenes
- B32B2323/04—Polyethylene
- B32B2323/046—LDPE, i.e. low density polyethylene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- 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
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- 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
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
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- Medicinal Chemistry (AREA)
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- Organic Chemistry (AREA)
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Abstract
The invention provides a kind of rust-preventing film and preparation method thereof, belong to thin film technique field.The rust-preventing film of the present invention, including outer layer, middle level, the part of internal layer three, wherein, by weight percentage, the preparing raw material of outer layer includes 30~50% LDPE 2420D, 30~50% LLDPE 218W, 1~5% dispersant, 1~10% antioxidant, 1~5% waterproofing agent;The preparing raw material in middle level includes 40~60% LDPE 2420D, 10~30% LLDPE 218W, 10~30% antirust masterbatch and 10~30% MLLDPE1881;The preparing raw material of internal layer includes 50~70% LDPE 2420D, 10~30% LLDPE 218W and 10~30% antirust masterbatch.Rust-preventing film produced by the present invention, its waterproof antioxygenic property is good, and rust-proof effect is lasting.
Description
Technical field
The invention belongs to thin film technique field, it is related to a kind of rust-preventing film and preparation method thereof.
Background technology
Metal and metallic article are in transport, storage process, it is easy to outward appearance, performance are influenceed by atmospheric corrosion, very
To causing to scrap, it is therefore necessary to longer or metal and its product that be under high humidity, hot conditions enter to transport, period of storage
Row rust prevention packaging.Antirust film is a kind of material synthesized by polyethylene and antirust composition, and being mainly used in packaging, some easily get rusty
Metal device.Antirust film can do film forming, can also make open-bag, valve bag, bag with square bottom, stereoscopic bag, bellows pocket, M
Bag, flanging bag, can be according to customer requirement printed patterns and word.
One layer of last layer oil-soluble inhibitor, base oil and auxiliary additive formation is applied in material surface in the prior art to prevent
Become rusty oil guard, and this protection is generally used for the packaging of relatively inexact device or seals up for safekeeping, and this protected mode is time-consuming and cost
Height, antirust oil is put can go bad long afterwards, and the use of anti-corrosive grease causes environmental pollution, in addition, oiliness thing can be stained with metal
On the product of system, certain harmful effect is caused to product.Later modification method is that gasification property is added on conventional packaging material
Corrosion suppresses (Volatile Corrosion Inhibitors;VCI) material, such a material can be waved when metallic article is packed
Gas molecule is sent, the gas molecule can completely coat metallic article one diaphragm of formation, the diaphragm can block air and gold
Metal products produce chemical reaction, with preventing the effect of corrosion.
CN1344616A provides a kind of gas-phase antirusting film and its production method, and the gas-phase antirusting film is by inside and outside two layers
Constitute, outer layer is LLDPE or low density polyethylene (LDPE) or its combination layer, internal layer is low density polyethylene (LDPE) and gasification
Property corrosion inhibiter VCI and additive mixed layer, the two mix simultaneously formed through coextrusion blow, its is simple in construction, transparent flexible, heat-sealing
Property it is good, can machine-shaping, be sustained VCI, extend rust-proof life, improve outward appearance, it is easy to reclaim, can be widely applied to machinery, instrument,
The rust prevention packaging in the fields such as electrical equipment, automobile, intermetallic composite coating.
CN102173151A discloses a kind of high-strength oxidation-resisting anti-rust film, be in independent batching sequence complete internal layer,
Middle level and the preparation of outer layered material, then by extruder, internal layer, middle level and outer layered material are molded one three in single multilayer co-extrusion mode
Layer composite membrane;The interior layered material includes and is evenly mixed in the volatility rust oxidation VCI for accounting for interior layered material gross weight ratio 5%
In polythene PE masterbatch, VCI antirust internal layers are shaped to;The middle material include by account for middle material gross weight ratio 3% 4,4 '-
Split isopropyl diphenyl base C12-15- alcohol phosphite esters are evenly mixed in polythene PE masterbatch, are shaped to bridge formation middle level;This is outer
Layered material is comprising will account for the polypropylene PP of outer layered material gross weight ratio 13% and account for the metal of outer layered material gross weight ratio 30%
Change the uniform mix polyethylene PE material of polypropylene MPP, be shaped to obstruct outer layer.
But after this kind of rustproof packaging material is placed for a long time, the oxygen in air is with water it is possible to penetrating packing timber
Material, reduces rust-proof effect.
The content of the invention
In view of the shortcomings of the prior art, an object of the present invention is to provide a kind of rust-preventing film, its waterproof inoxidizability
Can be good, rust-proof effect is lasting.
For up to this goal of the invention, the present invention uses following technical scheme:
A kind of rust-preventing film, including outer layer, middle level, the part of internal layer three, the outer layer weight account for the 20~40% of film gross weight, example
Such as 20%, 21%, 22%, 23%, 24%, 25%, 28%, 30%, 32%, 34%, 35%, 36%, 38%, 39%, 40%;
The middle layer weight accounts for the 30~60% of film gross weight, such as 30%, 32%, 34%, 35%, 36%, 38%, 39%, 40%,
41%th, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, 51%, 52%, 53%, 55%, 58%,
60%;The interior layer weight accounts for the 30~60% of film gross weight, such as 30%, 32%, 34%, 35%, 36%, 38%, 39%,
40%th, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, 51%, 52%, 53%, 55%,
58%th, 60%;Wherein, by weight percentage,
The preparing raw material of the outer layer includes 30~50% LDPE 2420D, such as 30%, 32%, 34%, 35%,
36%th, 38%, 40%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%;30~50% LLDPE
218W, such as 30%, 32%, 34%, 35%, 36%, 38%, 40%, 42%, 43%, 44%, 45%, 46%, 47%,
48%th, 49%, 50%;1~5% dispersant, such as 1%, 2%, 3%, 4%, 5%;1~10% antioxidant, for example
1%th, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%;1~5% waterproofing agent, such as 1%, 2%, 3%, 4%,
5%;
The preparing raw material in the middle level includes 40~60% LDPE 2420D, such as 40%, 41%, 42%, 43%,
44%th, 45%, 46%, 47%, 48%, 49%, 50%, 51%, 52%, 53%, 55%, 58%, 60%;10~30%
LLDPE 218W, such as 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%,
22%th, 23%, 24%, 25%, 28%, 30%;10~30% antirust masterbatch, such as 10%, 11%, 12%, 13%,
14%th, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 28%, 30%;With 10~
30% MLLDPE1881, such as 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%,
21%th, 22%, 23%, 24%, 25%, 28%, 30%;
The preparing raw material of the internal layer includes 50~70% LDPE 2420D, such as 50%, 51%, 52%, 53%,
55%th, 58%, 60%, 61%, 62%, 63%, 65%, 66%, 68%, 69%, 70%;10~30% LLDPE 218W and
10~30% antirust masterbatch, such as 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%,
20%th, 21%, 22%, 23%, 24%, 25%, 28%, 30%.
Preferably, the outer layer weight accounts for the 30% of film gross weight, and the middle layer weight accounts for the 40% of film gross weight, the internal layer
Weight accounts for the 30% of film gross weight.
Preferably, the preparing raw material of the outer layer includes 40% LDPE 2420D, 40% LLDPE 218W, 2%
Dispersant, 5% antioxidant, 3% waterproofing agent.
Preferably, the preparing raw material in the middle level includes 50% LDPE 2420D, 20% LLDPE 218W, 20%
Antirust masterbatch and 10% MLLDPE1881.
Preferably, the preparing raw material of the internal layer includes 60% LDPE 2420D, 20% LLDPE 218W and 20%
Antirust masterbatch.
VCI volatile rust prevention masterbatch, discharges VCI antirust particles automatically, metal surface formed diaphragm, prevent electric current from
Anode flows to negative electrode, suppresses the generation of corrosion reaction, and antirust particle be combined with each other with internal oxygen molecule and hydrone, limits it
Freely activity, produce interlock function, reach antirust purpose.
Wherein, by weight percentage, the preparing raw material of the antirust masterbatch include 80~90% LDPE 2420D and
10~20% rust-inhibiting additive.Rust-inhibiting additive is added to LDPE 2420D antirust masterbatch is made, can more uniformly divided
It is dissipated in polyethylene raw material, makes rust-proof effect evenly lasting.Preferably, the rust-inhibiting additive is selected from SA salt, molybdic acid
One kind or at least two mixture in salt, carboxylate, benzotriazole, phosphate amine salt.Typical but unrestricted two kinds are mixed
Compound is mixture, the mixture of SA salt and carboxylate, SA salt and the benzotriazole of SA salt and molybdate
Mixture, the mixture of SA salt and phosphate amine salt;Three kinds of typical but unrestricted mixtures are SA salt, molybdate
With the mixture of carboxylate, the mixture of SA salt, molybdate and benzotriazole, SA salt, molybdate and phosphamide
The mixture of salt;Four kinds of typical but unrestricted mixtures are SA salt, molybdate, carboxylate, the mixing of benzotriazole
Thing, SA salt, molybdate, benzotriazole, the mixture of phosphate amine salt, SA salt, molybdate, carboxylate, phosphamide
The mixture of salt, molybdate, carboxylate, benzotriazole, the mixture of phosphate amine salt, five kinds of typical but unrestricted mixtures
For SA salt, molybdate, carboxylate, benzotriazole, phosphate amine salt mixture.
Wherein, one kind in carboxymethyl cellulose, Tissuemat E, lauryl sodium sulfate of the dispersant or at least
Two kinds of mixture.Two kinds of typical but unrestricted mixtures are the mixture of carboxymethyl cellulose and Tissuemat E, carboxymethyl
The mixture of cellulose, lauryl sodium sulfate, Tissuemat E, the mixture of lauryl sodium sulfate;It is typical but unrestricted
Three kinds of mixtures are carboxymethyl cellulose, Tissuemat E, the mixture of lauryl sodium sulfate.
The second object of the present invention is to provide a kind of preparation method of rust-preventing film as described above, and technique is simple, described
Preparation method comprises the following steps:
1) batch mixing, prepares the outer layer raw mixture of rust-preventing film, will match somebody with somebody after the preparing raw material of the outer layer of formula ratio is mixed
The middle level raw mixture of rust-preventing film is prepared after the preparing raw material mixing in the middle level of side's amount, by the preparing raw material of the internal layer of formula ratio
The internal layer raw mixture of rust-preventing film is prepared after mixing;
2) dispensing, by step 1) the outer layer raw mixture of rust-preventing film, middle level raw mixture, the internal layer raw material that prepare mix
Compound carries out dispensing by proportioning;
3) blown film, by step 2) membrane material coextrusion blow shaping after dispensing.
Step 3) in, the coextrusion blow process is, by outer layer raw mixture, middle level raw mixture, internal layer raw material
Mixture by proportioning add three-layer co-extruded inflation film machine it is outer, in, in internal layer hopper, heat and simultaneously gradually heat up, outer layer, in
Layer, the extrusion temperature of internal layer are controlled at 170~185 DEG C, and rust-preventing film is made in extruded blow molding.
Compared with prior art, beneficial effects of the present invention are:LDPE is employed in every layer of the rust-preventing film of the present invention
Material with LLDPE series makes obtained film have good impact resistance, tear resistance as raw material, and can be in high temperature ring
Performance change is not produced under border, harmful material will not be discharged;The antioxidant and waterproofing agent added in cladding material makes
It is obtained that there is obtained rust-preventing film the addition of the antirust masterbatch in good waterproof antioxygenic property, middle level and inner layer material to make
Film has lasting rustless property, in addition, MLLDPE1881 addition does not influence the characteristic of film in itself in middle layer material, makes system
Film weld seam is strong, good toughness.The waterproof antioxygenic property of rust-preventing film produced by the present invention is good, and rust-proof effect persistently, resists
Sustainable 3~5 years of function of becoming rusty.
Embodiment
Technical scheme is further illustrated below by embodiment.
Unless specific instructions, various raw materials of the invention are commercially available buys, or is prepared according to the conventional method of this area
Obtain.
Embodiment 1
The rust-preventing film of the present embodiment, including outer layer, middle level, the part of internal layer three, outer layer weight account for the 30% of film gross weight, middle level
Weight accounts for the 40% of film gross weight, and interior layer weight accounts for the 30% of film gross weight, wherein, by weight percentage, the preparing raw material of outer layer
Including 40% LDPE 2420D, 40% LLDPE 218W, 2% lauryl sodium sulfate, 5% antioxidant, 3% it is anti-
Aqua;The preparing raw material in middle level includes 50% LDPE 2420D, 20% LLDPE 218W, 20% antirust masterbatch and 10%
MLLDPE1881;The preparing raw material of internal layer includes 60% LDPE 2420D, 20% LLDPE 218W and 20% antirust
Masterbatch, the preparing raw material of antirust masterbatch includes 90% LDPE 2420D and 10% rust-inhibiting additive.
The preparation method of the rust-preventing film of the present embodiment comprises the following steps:
1) batch mixing, prepares the outer layer raw mixture of rust-preventing film, will match somebody with somebody after the preparing raw material of the outer layer of formula ratio is mixed
The middle level raw mixture of rust-preventing film is prepared after the preparing raw material mixing in the middle level of side's amount, by the preparing raw material of the internal layer of formula ratio
The internal layer raw mixture of rust-preventing film is prepared after mixing;
2) dispensing, by step 1) the outer layer raw mixture of rust-preventing film, middle level raw mixture, the internal layer raw material that prepare mix
Compound carries out dispensing by proportioning;
3) blown film, by step 2) membrane material coextrusion blow shaping after dispensing.The coextrusion blow process is, outer layer is former
Expect mixture, middle level raw mixture, internal layer raw mixture by proportioning add three-layer co-extruded inflation film machine it is outer, in, it is interior
In layered material bucket, heat and gradually heat up, outer layer, middle level, the extrusion temperature of internal layer are controlled at 170~185 DEG C, extruded to be blow molded into
Rust-preventing film is made in type.
Embodiment 2
The rust-preventing film of the present embodiment, including outer layer, middle level, the part of internal layer three, outer layer weight account for the 40% of film gross weight, middle level
Weight accounts for the 40% of film gross weight, and interior layer weight accounts for the 20% of film gross weight, wherein, by weight percentage, the preparing raw material of outer layer
Including 50% LDPE 2420D, 35% LLDPE 218W, 5% carboxymethyl cellulose, 8% antioxidant, 2% waterproof
Agent;The preparing raw material in middle level includes 60% LDPE 2420D, 10% LLDPE 218W, 30% antirust masterbatch and 10%
MLLDPE1881;The antirust that the preparing raw material of internal layer includes 50% LDPE 2420D, 30% LLDPE 218W and 20% is female
Material, the preparing raw material of antirust masterbatch includes 80% LDPE 2420D and 20% rust-inhibiting additive.The rust-inhibiting additive is
The mixture of SA salt and benzotriazole.
The preparation method of the liquid packaging film of the present embodiment is same as Example 1, will not be repeated here.
Embodiment 3
The rust-preventing film of the present embodiment, including outer layer, middle level, the part of internal layer three, outer layer weight account for the 25% of film gross weight, middle level
Weight accounts for the 50% of film gross weight, and interior layer weight accounts for the 25% of film gross weight, wherein, by weight percentage, the preparing raw material of outer layer
Including 45% LDPE 2420D, 40% LLDPE 218W, 3% Tissuemat E, the mixture of lauryl sodium sulfate,
7% antioxidant, 5% waterproofing agent;The preparing raw material in middle level includes 55% LDPE 2420D, 25% LLDPE 218W,
10% antirust masterbatch and 10% MLLDPE1881;The preparing raw material of internal layer includes 65% LDPE 2420D, 25%
LLDPE 218W and 10% antirust masterbatch, the preparing raw material of antirust masterbatch includes 85% LDPE 2420D and 15% antirust
Additive, the rust-inhibiting additive is SA salt, molybdate, carboxylate, the mixture of benzotriazole.
The preparation method of the liquid packaging film of the present embodiment is same as Example 1, will not be repeated here.
Embodiment 4
The rust-preventing film of the present embodiment, including outer layer, middle level, the part of internal layer three, outer layer weight account for the 20% of film gross weight, middle level
Weight accounts for the 40% of film gross weight, and interior layer weight accounts for the 40% of film gross weight, wherein, by weight percentage, the preparing raw material of outer layer
Including 50% LDPE 2420D, 30% LLDPE 218W, 5% lauryl sodium sulfate, 10% antioxidant, 5%
Waterproofing agent;The preparing raw material in middle level includes 50% LDPE 2420D, 20% LLDPE 218W, 20% antirust masterbatch and
10% MLLDPE1881;The preparing raw material of internal layer includes 60% LDPE 2420D, 20% LLDPE 218W's and 20%
Antirust masterbatch, the preparing raw material of antirust masterbatch includes 90% LDPE 2420D and 10% rust-inhibiting additive, and the antirust adds
Plus agent is SA salt, molybdate, carboxylate, benzotriazole, the mixture of phosphate amine salt.
The preparation method of the liquid packaging film of the present embodiment is same as Example 1, will not be repeated here.
Embodiment 5
The rust-preventing film of the present embodiment, including outer layer, middle level, the part of internal layer three, outer layer weight account for the 30% of film gross weight, middle level
Weight accounts for the 40% of film gross weight, and interior layer weight accounts for the 30% of film gross weight, wherein, by weight percentage, the preparing raw material of outer layer
Including 50% LDPE 2420D, 30% LLDPE 218W, 5% carboxymethyl cellulose, Tissuemat E, dodecyl sulphate
The mixture of sodium, 10% antioxidant, 5% waterproofing agent;The preparing raw material in middle level includes 50% LDPE 2420D, 20%
LLDPE 218W, 20% antirust masterbatch and 10% MLLDPE1881;The preparing raw material of internal layer includes 60% LDPE
2420D, 20% LLDPE 218W and 20% antirust masterbatch, the preparing raw material of antirust masterbatch includes 90% LDPE 2420D
With 10% rust-inhibiting additive, the rust-inhibiting additive is the mixture of SA salt, molybdate and carboxylate.
The preparation method of the liquid packaging film of the present embodiment is same as Example 1, will not be repeated here.
The waterproof antioxygenic property of the obtained rust-preventing film of the present invention is good, and rust-proof effect is lasting, and rust-proofing function sustainable 3~
5 years, it can be widely applied to the rust prevention packaging in the fields such as machinery, instrument, electrical equipment, automobile, intermetallic composite coating.
Applicant states that the present invention illustrates detailed process equipment and the technological process of the present invention by above-described embodiment,
But the invention is not limited in above-mentioned detailed process equipment and technological process, that is, do not mean that the present invention has to rely on above-mentioned detailed
Process equipment and technological process could be implemented.Person of ordinary skill in the field it will be clearly understood that any improvement in the present invention,
Addition, selection of concrete mode of equivalence replacement and auxiliary element to each raw material of product of the present invention etc., all fall within the present invention's
Within the scope of protection domain and disclosure.
Claims (9)
1. a kind of rust-preventing film, including outer layer, middle level, the part of internal layer three, it is characterised in that the outer layer weight accounts for the 20 of film gross weight
~40%, the middle layer weight accounts for the 30~60% of film gross weight, and the interior layer weight accounts for the 30~60% of film gross weight, wherein, press
Percentage by weight meter,
The preparing raw material of the outer layer includes 30~50% LDPE 2420D, 30~50% LLDPE 218W, 1~5%
Dispersant, 1~10% antioxidant, 1~5% waterproofing agent;
The preparing raw material in the middle level includes 40~60% LDPE 2420D, 10~30% LLDPE 218W, 10~30%
Antirust masterbatch and 10~30% MLLDPE1881;
The preparing raw material of the internal layer includes 50~70% LDPE 2420D, 10~30% LLDPE 218W and 10~30%
Antirust masterbatch.
2. rust-preventing film according to claim 1, it is characterised in that the outer layer weight accounts for the 30% of film gross weight, it is described in
Layer weight accounts for the 40% of film gross weight, and the interior layer weight accounts for the 30% of film gross weight.
3. rust-preventing film according to claim 1 or 2, it is characterised in that the preparing raw material of the outer layer includes 40%
LDPE 2420D, 40% LLDPE 218W, 2% dispersant, 5% antioxidant, 3% waterproofing agent.
4. the rust-preventing film according to one of claim 1-3, it is characterised in that the preparing raw material in the middle level includes 50%
LDPE 2420D, 20% LLDPE 218W, 20% antirust masterbatch and 10% MLLDPE1881.
5. the rust-preventing film according to one of claim 1-4, it is characterised in that the preparing raw material of the internal layer includes 60%
LDPE 2420D, 20% LLDPE 218W and 20% antirust masterbatch.
6. the rust-preventing film according to one of claim 1-5, it is characterised in that by weight percentage, the antirust masterbatch
Preparing raw material include 80~90% LDPE 2420D and 10~20% rust-inhibiting additive.
7. rust-preventing film according to claim 6, it is characterised in that the rust-inhibiting additive be selected from SA salt, molybdate,
One kind or at least two mixture in carboxylate, benzotriazole, phosphate amine salt.
8. the rust-preventing film according to one of claim 1-7, it is characterised in that the dispersant be selected from carboxymethyl cellulose,
One kind or at least two mixture in Tissuemat E, lauryl sodium sulfate.
9. the preparation method of the rust-preventing film according to one of claim 1-8, it is characterised in that the preparation method is included such as
Lower step:
1) batch mixing, prepares the outer layer raw mixture of rust-preventing film, by formula ratio after the preparing raw material of the outer layer of formula ratio is mixed
Middle level preparing raw material mixing after prepare the middle level raw mixture of rust-preventing film, the preparing raw material of the internal layer of formula ratio is mixed
The internal layer raw mixture of rust-preventing film is prepared afterwards;
2) dispensing, by step 1) prepare rust-preventing film outer layer raw mixture, middle level raw mixture, internal layer raw mixture
Dispensing is carried out by proportioning;
3) blown film, by step 2) membrane material coextrusion blow shaping after dispensing.
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Application publication date: 20170721 |