CN113401520A - Application of PSA (pressure swing adsorption) in refrigerated container - Google Patents
Application of PSA (pressure swing adsorption) in refrigerated container Download PDFInfo
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- CN113401520A CN113401520A CN202110368134.9A CN202110368134A CN113401520A CN 113401520 A CN113401520 A CN 113401520A CN 202110368134 A CN202110368134 A CN 202110368134A CN 113401520 A CN113401520 A CN 113401520A
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- psa
- styrene
- refrigerated container
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Classifications
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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
- B65D90/00—Component parts, details or accessories for large containers
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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
- B65D88/00—Large containers
- B65D88/74—Large containers having means for heating, cooling, aerating or other conditioning of contents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J153/00—Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J153/02—Vinyl aromatic monomers and conjugated dienes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses an application of PSA in a refrigerated container, which is applied to a component in a bonded refrigerated container. The refrigerated container comprises a heat preservation container, an external refrigerated container, an internal refrigerated container, a liquid nitrogen and dry ice refrigerated container and a freezing plate refrigerated container. The PSA is applied to the refrigerated container, so that the PSA has good heat insulation performance, meets the requirement of keeping low temperature, improves the refrigeration effect of the refrigerated container, and increases the application range of the refrigerated container.
Description
Technical Field
The invention relates to the technical field of adhesives, in particular to application of PSA in a refrigerated container.
Background
The refrigerated container (Reefer container) is a special container which has good heat insulation and can maintain a certain low temperature requirement and is suitable for the transportation and storage of various perishable foods. The basic types of refrigerated containers are insulated containers, external refrigerated containers, concealed refrigerated containers, liquid nitrogen and dry ice refrigerated containers, freeze plate refrigerated containers, and the like. Refrigerated containers are typically used to transport frozen goods at temperatures no higher than-18 ℃. Generally, the average cooling rate of a foot refrigerated container is 31.3 ℃/h (empty container), but after loading, the cooling rate is greatly reduced due to the large heat capacity of the goods.
PSA (hot melt pressure sensitive adhesive) is a third generation pressure sensitive adhesive product following solvent-based and emulsion-based pressure sensitive adhesives, and compared with the former two, the hot melt pressure sensitive adhesive has no solvent, is more favorable to environmental protection and safe production, has high production efficiency, relatively low production cost, good adhesive force, thermal stability, excellent weather resistance, water resistance and waterproof properties, and is widely applied to similar sealing cases, sealing boxes, paper product packaging, beverage bottle labels, sealing aluminum foils, waterproof coiled materials, express waybills, flexible packaging, other packaging and the like. However, because the viscosity is significantly affected by temperature, there is no report on the application of PSA to refrigerated containers.
Disclosure of Invention
This application has solved prior art hot melt adhesive and can not be used for the problem of reefer container because of adhesive property is poor, light fastness is poor, resistant high low temperature performance is poor through providing a PSA's application in reefer container, has realized the application of PSA on reefer container.
The application provides a PSA's application in frozen products insulated container is applied to the subassembly in the bonding frozen products insulated container, the subassembly includes at least one in interior plate, outer panel, outer roof, T bottom plate, door plant, chassis.
In a preferred embodiment, the refrigerated container comprises a thermal container, an external refrigerated container, an internal refrigerated container, a liquid nitrogen and dry ice refrigerated container, a freeze plate refrigerated container.
In a preferred embodiment, the polyurethane foam and the metal sheet are used in a bonded assembly.
In a preferred embodiment, the metal plate material comprises at least one of a stainless steel plate material, an aluminum plate material and a metal composite plate material.
In a preferred embodiment, the PSA comprises the following components in parts by weight: 100-160 parts of AB block copolymer, 0-100 parts of aromatic ring-containing petroleum resin, 80-160 parts of open chain type petroleum resin, 16-100 parts of liquid petroleum resin, 0-24 parts of styrene-isoprene-styrene block copolymer and 361 parts of additive supplement.
In a preferred embodiment, the AB block copolymer has a styrene and B is isoprene.
In a preferred embodiment, the AB block copolymer has a melt flow index of 6 to 30g/10min, and a diblock content of 0 to 60% under 5kg load at 200 ℃.
In a preferred embodiment, the additive comprises at least one of a low molecular weight isobutylene polymer, a styrene-butadiene-styrene hydrogenated polymer, a styrene-maleic anhydride copolymer, a styrene modified copolymer, a mineral oil, a light stabilizer, an anti-aging agent.
In a preferred embodiment, the PSA is used by: spraying PSA on a metal plate, and then standing for 6-12 hours for polyurethane foaming.
The application provides an application of PSA in a refrigerated container, and the glue spraying amount of the PSA is 30-60g/m2。
Has the advantages that: PSA is applied to the refrigerated container, so that the refrigerated container has good heat insulation performance, meets the requirement of keeping low temperature, improves the refrigeration effect of the refrigerated container, and increases the application range of the refrigerated container.
Detailed Description
The application provides a PSA's application in frozen products insulated container is applied to the subassembly in the bonding frozen products insulated container, the subassembly includes at least one in interior plate, outer panel, outer roof, T bottom plate, door plant, chassis.
In a preferred embodiment, the refrigerated container comprises a thermal container, an external refrigerated container, an internal refrigerated container, a liquid nitrogen and dry ice refrigerated container, a freeze plate refrigerated container.
Preferably, the adhesive is used for bonding the polyurethane foaming material and the metal sheet in the assembly; the metal plate comprises at least one of a stainless steel plate, an aluminum plate and a metal composite plate.
The floor area of the refrigerated container is large and easy to bend, the contact area of the reinforcing ribs and the panel is small, the PSA has good viscosity and low-temperature resistance, and the PSA is applied between the polyurethane foam material and the metal plate on the floor of the refrigerated container, so that the stress capacity of the floor of the refrigerated container can be enhanced, and the stability and the heat insulation performance of the refrigerated container are further improved.
In a preferred embodiment, the PSA comprises the following components in parts by weight: 100-160 parts of AB block copolymer, 0-100 parts of aromatic ring-containing petroleum resin, 80-160 parts of open chain type petroleum resin, 16-100 parts of liquid petroleum resin, 0-24 parts of styrene-isoprene-styrene block copolymer and 361 parts of additive supplement.
The melt flow index of the AB block copolymer is 6-30 g/10min, the test condition is 200 ℃, and the diblock content is 0-60% under 5kg load.
The AB block copolymer is selected from a star-shaped AB block copolymer or a linear AB block copolymer.
The AB block copolymer with a star structure and the styrene-isoprene-styrene block copolymer are compounded, so that the PSA has excellent performance. The reason is presumed to be that the styrene-isoprene-styrene block copolymer is a triblock copolymer in which styrene and isoprene are used as monomers, the middle is a soft rubber segment isolated from each other, and both sides are hard plastic segments; can be cooperated with AB block copolymer, and improves the low temperature resistance, salt water resistance, high and low temperature cycle performance and normal temperature tearing performance of PSA.
The AB block copolymer with the star-shaped structure is D1107 and is purchased from the Yingtai plastic material Jing Ming Dynasty of Dongguan city.
The petroleum resin containing aromatic rings is C9 modified petroleum resin; preferably, the C9 modified petroleum resin has a softening point of 95-130 ℃ and an acid value of 0.1-1.0mg KOH/g.
The open chain type petroleum resin is C5 petroleum resin.
Preferably, the liquid petroleum resin is at least one selected from the group consisting of C5 liquid petroleum resin, C9 liquid petroleum resin, C5/C9 liquid petroleum resin.
More preferably, the liquid petroleum resin is C9 liquid petroleum resin. The CAS number of the C9 liquid petroleum resin is 85-96-3, the brand number DN-0005, and the resin is purchased from Shandong Denno new material science and technology company Limited.
The petroleum resin containing aromatic rings is viscous liquid at normal temperature, and interacts with the open-chain petroleum resin and the liquid petroleum resin, so that the compatibility of polymers in the whole system can be improved, the viscosity of the system is adjusted, and the bonding effect is improved.
In a preferred embodiment, the styrene-isoprene-styrene block copolymer has a styrene content of 15 to 45 wt% and a melt index of 6 to 25g/10min, and is tested at 200 ℃ under a load of 5 kg.
The additive comprises at least one of low molecular weight isobutene polymer, styrene-butadiene-styrene hydrogenated polymer, styrene-maleic anhydride copolymer, styrene modified copolymer, mineral oil, light stabilizer and anti-aging agent.
Preferably, the weight ratio of the low molecular weight isobutene polymer, the styrene-butadiene-styrene hydrogenated polymer, the styrene-maleic anhydride copolymer, the styrene modified copolymer, the mineral oil, the ultraviolet absorber and the anti-aging agent is (0-70): (5-15): (5-15): (30-80): (20-80): (3-5): (3-5).
More preferably, the weight ratio of the low molecular weight isobutene polymer, the styrene-butadiene-styrene hydrogenated polymer, the styrene-maleic anhydride copolymer, the styrene modified copolymer, the mineral oil, the ultraviolet absorber and the anti-aging agent is (20-40): (5-15): (5-15): (20-30): (20-40): (3-5): (3-5).
The low molecular weight isobutene polymer is a saturated linear polymer and mainly comprises a repeating unit-CH2－C(CH3)2-composition, average molecular weight 450-;
the styrene-butadiene-styrene hydrogenated polymer is a linear triblock copolymer which takes polystyrene as a terminal segment and takes an ethylene-butylene copolymer obtained by hydrogenation of polybutadiene as a middle elastic block.
The styrene modified copolymer is styrene modified petroleum resin.
In a preferred embodiment, the light stabilizer is phenyl salicylate and/or the ultraviolet absorber UV-0.
The CAS number of the phenyl salicylate is 118-55-8; the ultraviolet absorber UV-0 has a CAS number of 131-56-6.
In a preferred embodiment, the ratio of the phenyl salicylate to the ultraviolet absorber UV-0 is 2 parts by weight: 1.
phenyl salicylate and ultraviolet absorbent UV-0 have-OH, carbonyl and other groups, can interact with AB block copolymer, anti-aging agent BHT and antioxidant 168 to inhibit the photo-oxidation-reduction reaction, prevent the degradation of the AB block copolymer and styrene-isoprene-styrene block copolymer by ultraviolet light, and weaken the influence of the ultraviolet light on the PSA intensity.
In a preferred embodiment, the aging inhibitor is antioxidant BHT and/or antioxidant 168.
The CAS number of the antioxidant BHT is 128-37-0. The CAS number of the antioxidant 168 is 31570-04-4.
In a preferred embodiment, the weight ratio of the antioxidant BHT to the antioxidant 168 is 1: 2.
the application provides a use method of PSA in a refrigerated container, which comprises the following specific operations: spraying PSA on a metal plate, and then standing for 6-12 hours for polyurethane foaming.
As a more preferable embodiment, the PSA is sprayed on the metal sheet material at the temperature of 160-190 ℃ by using a glue spraying method, and then the metal sheet material is placed for 6-12 hours and then sent to a foaming chamber for polyurethane foaming.
Preferably, the PSA spray amount is 30-60g/m2。
Examples
Example 1
The application provides an application of PSA in a refrigerated container, which is used for bonding polyurethane foam material and BN4 stainless steel; the specific operation is as follows: spraying PSA on BN4 stainless steel at 180-190 ℃ by using a glue spraying mode, then placing for 10 hours, and sending to a foaming chamber for polyurethane foaming; the PSA glue spraying amount is 50g/m2。
The PSA comprises 100 parts by weight of AB block copolymer (A is styrene and B is isoprene) with a star structure, 15 parts of styrene-isoprene-styrene block copolymer, 30 parts of low molecular weight isobutene polymer, 10 parts of styrene-butadiene-styrene hydrogenated polymer, 10 parts of styrene-maleic anhydride copolymer, 30 parts of styrene modified copolymer, 30 parts of petroleum resin containing aromatic rings, 80 parts of open chain type petroleum resin, 20 parts of liquid petroleum resin, 30 parts of mineral oil, 3 parts of ultraviolet absorbent and 3 parts of anti-aging agent.
The petroleum resin containing aromatic rings is C9 modified petroleum resin; the C9 modified petroleum resin has a softening point of 120 ℃ and an acid value of 0.8mg KOH/g, and is purchased from Shandong Ke specialty Chemicals Co., Ltd;
the open chain type petroleum resin is C5 petroleum resin;
the liquid petroleum resin is C9 liquid petroleum resin; c9 liquid petroleum resin, CAS number 85-96-3, trade name DN-0005, purchased from Shandong Deno New Material science and technology Co.
The ultraviolet absorbent comprises phenyl salicylate and ultraviolet absorbent; the weight ratio of the phenyl salicylate to the ultraviolet absorbent UV-0 is 2: 1;
the anti-aging agent comprises anti-aging agent BHT and antioxidant 168; the weight ratio of the antioxidant BHT to the antioxidant 168 is 1: 2.
the AB block copolymer with the star-shaped structure has the model number of D1107, the melt index of 10g/10min, the test condition of 200 ℃ and the load of 5kg, and is purchased from the Yingtai plastic material warp division of lignum Cinnamomi Camphorae of Dongguan city; the styrene-isoprene-styrene block copolymer is made by Yueyanite, model 1188, available from Dry and Yuan synthetic materials science and technology Co., Ltd, and has a styrene content of 20 wt%, a melt index of 8-16g/10min, a test condition of 200 ℃ and a load of 5 kg; the low molecular weight isobutene polymer is purchased from Guangzhou Cheng Sheng chemical technology Co., Ltd in Dalin brand and PB680 model; the styrene-butadiene-styrene hydrogenated polymer has the trade name of YH-503T and is purchased from plastic chemical Co., Ltd, Dongguan; the CAS number of the styrene-maleic anhydride copolymer is 31959-78-1, and the styrene-maleic anhydride copolymer is purchased from Shanghai color chemical industry and technology Limited; the styrene modified copolymer was sold under the brand name M90Z and purchased from Shandong Luhua.
The preparation method of the hot melt adhesive comprises the following steps: (1) putting a star-structured styrene-isoprene block copolymer, a styrene-isoprene-styrene block copolymer, a low molecular weight isobutylene polymer, a styrene-butadiene-styrene hydrogenated polymer, a styrene-maleic anhydride copolymer, a styrene modified copolymer, C9 modified petroleum resin, aromatic ring-containing petroleum resin, open chain petroleum resin, mineral oil, phenyl salicylate, an ultraviolet absorbent UV-0, an anti-aging agent BHT and an antioxidant 168 into a synthesis kettle, heating to 140 ℃, stirring at a stirring speed of 100r/min, stirring to a molten state, and uniformly mixing; (2) stirring for 2h, and discharging bubbles; (3) packaging to obtain the final product.
Example 2
The application provides a PSA's application in reefer container, and embodiment 1 is the same, the difference lies in: is used for bonding the polyurethane foaming material and the MGSS stainless iron.
Example 3
The application provides a PSA's application in reefer container, and embodiment 1 is the same, the difference lies in: used for bonding polyurethane foam material and AA6082 aluminum plate in T floor.
Example 4
The application provides a PSA's application in reefer container, and embodiment 1 is the same, the difference lies in: the polyurethane foaming material and the AA6061 aluminum alloy plate are used for bonding the anti-collision plate.
Comparative example 1
The application provides a PSA's application in reefer container, and embodiment 1 is the same, the difference lies in: in this example, no styrene-isoprene-styrene block copolymer was added.
Comparative example 2
The application provides a PSA's application in reefer container, and embodiment 1 is the same, the difference lies in: the PSA in this example consists of the following components in parts by weight: 100 parts of styrene-isoprene block copolymer with a star-shaped structure, 15 parts of styrene-isoprene-styrene block copolymer, 30 parts of low-molecular-weight isobutene polymer, 10 parts of styrene-butadiene-styrene hydrogenated polymer, 10 parts of styrene-maleic anhydride copolymer, 30 parts of styrene modified copolymer, 130 parts of C9 modified petroleum resin, 30 parts of mineral oil, 2 parts of phenyl salicylate, UV-01 parts of ultraviolet absorbent, 1 parts of anti-aging agent BHT and 1682 parts of antioxidant.
Performance test method
The assemblies obtained in the examples and comparative examples were subjected to the following performance tests:
1. testing for salt water resistance: saline is 5% NaCl; when the judgment standard is that the metal sheet is torn, the polyurethane foam material with the destruction rate more than 95 percent is qualified; the test number was 10;
2. high and low temperature cycle test: circulating for 72 hours at the temperature of-40 to 85 ℃; when the judgment standard is that the metal sheet is torn, the polyurethane foam material with the destruction rate more than 95 percent is qualified; the test number was 10;
3. low temperature tear test: the temperature is-40 ℃; when the judgment standard is that the metal sheet is torn, the polyurethane foam material with the destruction rate more than 95 percent is qualified; the test number was 10;
4. low-temperature impact test: the temperature is-40 ℃; when the judgment standard is that the metal sheet is torn, the polyurethane foam material with the destruction rate more than 95 percent is qualified; the test number was 10;
5. normal temperature tear test: when the judgment standard is that the metal sheet is torn, the polyurethane foam material with the destruction rate more than 95 percent is qualified; the test number was 10;
performance test data
Claims (10)
1. Use of a PSA in a refrigerated container for bonding components in a refrigerated container, the components comprising at least one of an inner side panel, an outer top panel, a T-bottom panel, a door panel, and an underframe.
2. The use of a PSA in a refrigerated container as claimed in claim 1 wherein: the refrigerated container comprises a heat preservation container, an external refrigerated container, an internal refrigerated container, a liquid nitrogen and dry ice refrigerated container and a freezing plate refrigerated container.
3. Use of a PSA in a reefer container as claimed in claim 1, wherein the PSA is used to bond polyurethane foam and sheet metal in the assembly.
4. The use of a PSA in a reefer container according to claim 3, wherein the metal sheet comprises at least one of stainless steel sheet, aluminum sheet, and metal composite sheet.
5. The use of a PSA in a reefer container according to claim 1, wherein the PSA comprises the following components in parts by weight: 100-160 parts of AB block copolymer, 0-100 parts of aromatic ring-containing petroleum resin, 80-160 parts of open chain type petroleum resin, 16-100 parts of liquid petroleum resin, 0-24 parts of styrene-isoprene-styrene block copolymer and 361 parts of additive supplement.
6. The use of a PSA in a reefer container according to claim 5, wherein the AB block copolymer has a styrene and B isoprene.
7. The use of a PSA in a reefer container according to claim 6, wherein the AB block copolymer has a melt flow index of from 6 to 30g/10min and a diblock content of from 0 to 60% under a 5kg load at 200 ℃.
8. The use of a PSA in a reefer container according to claim 5, wherein the additive comprises at least one of low molecular weight isobutylene polymers, styrene-butadiene-styrene hydrogenated polymers, styrene-maleic anhydride copolymers, styrene modified copolymers, mineral oils, light stabilizers, anti-aging agents.
9. The use of a PSA in a reefer container according to claim 5, wherein the PSA is used by: spraying PSA on a metal plate, and then standing for 6-12 hours for polyurethane foaming.
10. Use of the PSA of claim 9 in a reefer container, wherein the PSA has a size of 30-60g/m2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110368134.9A CN113401520B (en) | 2021-04-06 | 2021-04-06 | Application of PSA in refrigerated container |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110368134.9A CN113401520B (en) | 2021-04-06 | 2021-04-06 | Application of PSA in refrigerated container |
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| CN113401520A true CN113401520A (en) | 2021-09-17 |
| CN113401520B CN113401520B (en) | 2022-07-26 |
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| CN113401520B (en) | 2022-07-26 |
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