CN117683487A - Anti-permanganate oxidation hot melt adhesive - Google Patents
Anti-permanganate oxidation hot melt adhesive Download PDFInfo
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- CN117683487A CN117683487A CN202311697959.0A CN202311697959A CN117683487A CN 117683487 A CN117683487 A CN 117683487A CN 202311697959 A CN202311697959 A CN 202311697959A CN 117683487 A CN117683487 A CN 117683487A
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- 239000004831 Hot glue Substances 0.000 title claims abstract description 66
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 26
- 230000003647 oxidation Effects 0.000 title claims abstract description 24
- 239000003208 petroleum Substances 0.000 claims abstract description 42
- 239000011347 resin Substances 0.000 claims abstract description 42
- 229920005989 resin Polymers 0.000 claims abstract description 42
- 229920000098 polyolefin Polymers 0.000 claims abstract description 31
- -1 polypropylene Polymers 0.000 claims abstract description 26
- 239000004743 Polypropylene Substances 0.000 claims abstract description 25
- 229920001155 polypropylene Polymers 0.000 claims abstract description 25
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 21
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 19
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 11
- 239000010703 silicon Substances 0.000 claims abstract description 11
- 239000002253 acid Substances 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims description 30
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 239000000377 silicon dioxide Substances 0.000 claims description 11
- 238000001125 extrusion Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- FYGHSUNMUKGBRK-UHFFFAOYSA-N 1,2,3-trimethylbenzene Chemical compound CC1=CC=CC(C)=C1C FYGHSUNMUKGBRK-UHFFFAOYSA-N 0.000 claims description 6
- INQDDHNZXOAFFD-UHFFFAOYSA-N 2-[2-(2-prop-2-enoyloxyethoxy)ethoxy]ethyl prop-2-enoate Chemical compound C=CC(=O)OCCOCCOCCOC(=O)C=C INQDDHNZXOAFFD-UHFFFAOYSA-N 0.000 claims description 6
- 230000001590 oxidative effect Effects 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 3
- JBSODNBBAKNHEU-UHFFFAOYSA-N [3-hydroxy-2,2-bis(hydroxymethyl)propyl] propanoate Chemical compound CCC(=O)OCC(CO)(CO)CO JBSODNBBAKNHEU-UHFFFAOYSA-N 0.000 claims description 3
- 229920001903 high density polyethylene Polymers 0.000 claims description 3
- 239000004700 high-density polyethylene Substances 0.000 claims description 3
- 229920001684 low density polyethylene Polymers 0.000 claims description 3
- 239000004702 low-density polyethylene Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- QLNJFJADRCOGBJ-UHFFFAOYSA-N propionamide Chemical compound CCC(N)=O QLNJFJADRCOGBJ-UHFFFAOYSA-N 0.000 claims description 3
- 229940080818 propionamide Drugs 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 35
- 229910052748 manganese Inorganic materials 0.000 abstract description 3
- 239000011572 manganese Substances 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 21
- 239000012855 volatile organic compound Substances 0.000 description 21
- 239000000126 substance Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- 230000001070 adhesive effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 239000012286 potassium permanganate Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 102000008186 Collagen Human genes 0.000 description 3
- 108010035532 Collagen Proteins 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 229920001436 collagen Polymers 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 239000012943 hotmelt Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910021487 silica fume Inorganic materials 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000013112 stability test Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 206010028813 Nausea Diseases 0.000 description 1
- 206010047700 Vomiting Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000003421 catalytic decomposition reaction Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 230000008693 nausea Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
-
- 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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention belongs to the technical field of hot melt adhesives, and particularly relates to an anti-permanganate oxidation hot melt adhesive. The anti-permanganate oxidation hot melt adhesive is characterized by comprising the following components in percentage by mass: 35-45 parts of high molecular weight polyolefin, 5-15 parts of high melt polypropylene, 25-35 parts of petroleum resin, 10-25 parts of silicon micropowder and 0.1-1 part of antioxidant. The hot melt adhesive product has higher oxidation resistance and no low molecular weight output, and has longer service life when being applied to a filter related to a high-manganese acid filter material.
Description
Technical Field
The invention belongs to the technical field of hot melt adhesives, and particularly relates to an anti-permanganate oxidation hot melt adhesive.
Background
VOCs are the English abbreviations for volatile organic compounds (volatile organic compounds). VOC in the general sense refers to volatile organic compounds, which are, according to the world health organization definition, compounds having a boiling point of 50-250 ℃ at ordinary times; but the definition in the environment-friendly sense refers to active volatile organic compounds, namely volatile organic compounds which can generate harm. These compounds are often found in architectural decorative materials such as paints, coatings, adhesives, etc., which have a major impact on the environment and human health, such as VOC irritating the respiratory tract, eyes and skin, causing headache, nausea, vomiting, etc., which negatively impact human health, and therefore some products require VOC removal.
The permanganate-based filter material can be used for decomposing VOCs (volatile organic compounds). Potassium permanganate is a strong oxidizing agent that can undergo oxidation reaction with VOCs to decompose it into inorganic substances. When the composite material is manufactured, the potassium permanganate and polyvinyl formal and other materials can be mixed to prepare the permanganate filter material. The filter material has good adsorption performance and catalytic decomposition capability, and can effectively remove VOC in air. When removing VOC, the high manganese acid filter material is mainly carried out by the following two steps: adsorption: the permanganate filter material can adsorb VOC molecules in the air and fix the VOC molecules on the surface of the filter material. And (3) decomposition: the potassium permanganate in the permanganate filter material can perform oxidation reaction with the VOC to decompose the potassium permanganate into inorganic substances such as carbon dioxide, water vapor and the like.
The permanganate-based filter medium may be bonded by hot melt adhesive to form a filter. Hot melt adhesives are a plastic adhesive that flows at a certain temperature and cures rapidly at normal temperature. Therefore, the permanganate-based filter materials can be bonded together using a hot melt adhesive to form a filter. In the manufacture of the filter, the permanganate-based filter medium may be cut to a desired size and shape and arranged together. The hot melt adhesive is then uniformly applied to the surface of the filter medium using a hot melt adhesive gun, and heated to a flowing state using a heating element of the hot melt adhesive gun. After the hot melt adhesive cools and solidifies, the filter media will be firmly bonded together to form a complete filter.
However, the permanganate filter material has relatively active chemical properties and is easy to react with a plurality of components of the hot melt adhesive, so that the hot melt adhesive is formed. Second, in hot melt adhesives, low molecular weight materials typically have lower molecular weights and fewer functional groups and are therefore more susceptible to oxidation by permanganate ions. Whereas high molecular weight materials generally have higher molecular weights and more functional groups and are therefore more difficult to oxidize by permanganate ions. In the prior art, the filter material filter of the permanganic acid series cannot be applied to the hot melt adhesive, or the filter material is separated due to the fact that the hot melt adhesive is easy to fail and age after being used. Thus, in order for the hot melt adhesive to be applicable to the permanganate-based filter material, it is required that the hot melt adhesive has oxidation resistance against the permanganate-based filter material and that the hot melt adhesive has no low molecular weight substance or has no low molecular weight substance content.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an anti-permanganate oxidation hot melt adhesive.
The invention provides a permanganate oxidation resistant hot melt adhesive, which comprises the following components in percentage by mass: 35-45 parts of high molecular weight polyolefin, 5-15 parts of high melt polypropylene, 25-35 parts of petroleum resin, 10-25 parts of silicon micropowder and 0.1-1 part of antioxidant.
Preferably, 37-42 parts of high molecular weight polyolefin, 8-13 parts of high melt polypropylene, 28-33 parts of petroleum resin, 15-20 parts of silica micropowder and 0.4-0.7 part of antioxidant.
Preferably, 40 parts of high molecular weight polyolefin, 10 parts of high melting point polypropylene, 30 parts of petroleum resin, 17 parts of silica micropowder and 1 part of antioxidant.
Preferably, the high molecular weight polyolefin is one or a combination of more than two of low density polyethylene, high density polyethylene and polypropylene; the petroleum resin is one or two of C5 petroleum resin and C9 petroleum resin; the antioxidant is one or the combination of more than two of propionamide, triethylene glycol-diacrylate, pentaerythritol propionate, trimethylbenzene and antioxidant 264.
Preferably, the particle size of the silica micropowder is less than 800 mesh.
Preferably, the high molecular weight polyolefin is preformed by heating and evacuating.
Preferably, the softening point of the anti-permanganic acid oxidation hot melt adhesive is 140 ℃, and the viscosity is 20000-30000CPS.
Preferably, the anti-permanganate oxidation hot melt adhesive is prepared by the following method:
s1: preheating an extruder, proportionally adding high molecular weight polyolefin and high melt index polypropylene, heating to 180 ℃ and extruding, feeding into the next extruder for 2 times of extrusion, and outputting to a reaction kettle through a pipeline;
s2: preheating a reaction kettle, adding part of petroleum resin into the reaction kettle, heating to 180 ℃, stirring at a stirring speed of 20-50 revolutions per minute until the petroleum resin is completely melted and keeping the temperature constant;
s3: introducing high molecular weight polyolefin and high melt index polypropylene into a reaction kettle through a heating pipeline, stirring at 20-40 r, and keeping the temperature at 180 ℃ after uniform stirring;
s4: sequentially adding petroleum resin and antioxidant, and reducing the stirring speed by 10-30 revolutions; after fully and uniformly stirring, vacuumizing for 1 hour, and then introducing the mixture into a screw extruder for extrusion granulation.
The anti-permanganic acid oxidation hot melt adhesive provided by the invention has the advantages of oxidation resistance for preventing the permanganic acid filter material, no low molecular weight substance or extremely low content of low molecular weight substance, capability of being well applied to the use of a filter of the permanganic acid filter material, and longer service life.
Drawings
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intentionally drawn to scale on actual size or the like, with emphasis on illustrating the principles of the invention.
FIG. 1 is a graph showing the effect of testing the room temperature bond strength of a finished filter made of a hot melt adhesive and a permanganate filter material.
Detailed Description
In order that the invention may be understood more fully, the invention will be described with reference to the accompanying drawings.
The following is a further detailed description of the present invention in conjunction with specific embodiments, so that those skilled in the art may better understand and practice the present invention, but the examples are not intended to limit the present invention.
The invention provides a permanganate oxidation resistant hot melt adhesive, which comprises the following components in percentage by mass: 35-45 parts of high molecular weight polyolefin, 5-15 parts of high melt polypropylene, 25-35 parts of petroleum resin, 10-25 parts of silicon micropowder and 0.1-1 part of antioxidant.
In a preferred embodiment, 37-42 parts of high molecular weight polyolefin, 8-13 parts of high melt index polypropylene, 28-33 parts of petroleum resin, 15-20 parts of silica micropowder and 0.4-0.7 part of antioxidant.
In a preferred embodiment, 40 parts of high molecular weight polyolefin, 10 parts of high melting point polypropylene, 30 parts of petroleum resin, 17 parts of silica micropowder and 1 part of antioxidant.
In a preferred embodiment, the high molecular weight polyolefin is one or a combination of more than two of low density polyethylene, high density polyethylene and polypropylene; the petroleum resin is one or two of C5 petroleum resin and C9 petroleum resin; the antioxidant is one or more of propionamide, triethylene glycol-diacrylate, pentaerythritol propionate, trimethylbenzene and antioxidant 264.
In a preferred embodiment, the particle size of the silica fume is less than 800 mesh.
In a preferred embodiment, the high molecular weight polyolefin is preformed by heating and evacuating.
In a preferred embodiment, the anti-permanganate hot melt adhesive has a softening point of 140 degrees and a viscosity of 20000 to 30000CPS.
In a preferred embodiment, the anti-permanganate oxidizing hot melt adhesive is prepared by:
s1: preheating an extruder, proportionally adding high molecular weight polyolefin and high melt index polypropylene, heating to 180 ℃ and extruding, feeding into the next extruder for 2 times of extrusion, and outputting to a reaction kettle through a pipeline;
s2: preheating a reaction kettle, adding part of petroleum resin into the reaction kettle, heating to 180 ℃, stirring at a stirring speed of 20-50 revolutions per minute until the petroleum resin is completely melted and keeping the temperature constant;
s3: introducing high molecular weight polyolefin and high melt index polypropylene into a reaction kettle through a heating pipeline, stirring at 20-40 r, and keeping the temperature at 180 ℃ after uniform stirring;
s4: sequentially adding petroleum resin and antioxidant, and reducing the stirring speed by 10-30 revolutions; after fully and uniformly stirring, vacuumizing for 1 hour, and then introducing the mixture into a screw extruder for extrusion granulation.
The petroleum resin in the hot melt adhesive product is used as a tackifier, so that the adhesive property of the product is effectively improved. The small amount of antioxidant can relieve the aging of the material in the heating process and improve the service life of the finished product in daily use.
The high-melting polypropylene in the hot melt adhesive product effectively improves the temperature resistance of the product, prevents part of the product from aging under the high temperature condition, and simultaneously adds a certain proportion of silica micropowder filler which is inert powder, thereby effectively reducing the activity of the product and improving the oxidation resistance and the cost. And secondly, the silicon micropowder can also form a compact protective layer on the surface of the petroleum resin hot melt adhesive to isolate the corrosion of harmful substances such as external oxygen, moisture and the like, thereby further improving the oxidation resistance.
However, the addition of the silica fume has the following effects: firstly, the flowability of the hot melt adhesive is reduced by adding the silicon micro powder, and the flowability of the petroleum resin hot melt adhesive is reduced by adding the silicon micro powder, so that the petroleum resin hot melt adhesive becomes more viscous, and is not beneficial to processing and use; secondly, the addition of the silicon micropowder can reduce the adhesive force of the petroleum resin hot melt adhesive, so that the adhesive effect of the petroleum resin hot melt adhesive on certain materials is weakened. The hot melt adhesive product of the present invention addresses these effects by the method of preparation and the defined formulation.
The hot melt adhesive product can be completely applied to chemical filter materials with higher oxidability, such as a filter related to a permanganate filter material, the softening point of the hot melt adhesive is about 140 ℃, and the viscosity is 20000-30000CPS; through the process and material modification, the VOC of the hot melt adhesive product reaches or approaches zero release, and the defect that the prior hot melt adhesive products in the market basically have the release of VOC is overcome.
The hot melt adhesive product has higher oxidation resistance and no low molecular weight output, and has longer service life when being applied to a filter related to a high-manganese acid filter material. The high molecular weight polyolefin is prefabricated by heating and vacuumizing, so that low molecular weight substances generated in the production process of raw materials are effectively removed, and the mechanical structure of the polyolefin is changed by extrusion so as to reduce the consistency of the product, thereby being suitable for production in a production line.
Example 1:
the permanganate oxidized hot melt collagen material comprises the following components in percentage by mass: 40 parts of high molecular weight polyolefin, 10 parts of high melt polypropylene, 30 parts of petroleum resin, 17 parts of silicon micropowder and 1 part of antioxidant. And is prepared as follows.
S1: preheating an extruder, adding high molecular weight polyolefin and high melt index polypropylene, heating to 180 ℃ and extruding, feeding into the next extruder for 2 times of extrusion, and outputting to a reaction kettle through a pipeline;
s2: preheating a reaction kettle, adding part of petroleum resin into the reaction kettle, heating to 180 ℃, stirring at a stirring speed of 20-50 revolutions per minute until the petroleum resin is completely melted and keeping the temperature constant;
s3: introducing high molecular weight polyolefin and high melt index polypropylene into a reaction kettle through a heating pipeline, stirring at 20-40 r, and keeping the temperature at 180 ℃ after uniform stirring;
s4: sequentially adding the rest petroleum resin, all antioxidants and the silicon micropowder, and reducing the stirring speed by 10-30 revolutions; after fully and uniformly stirring, vacuumizing for 1 hour, and then introducing the mixture into a screw extruder for extrusion granulation.
Comparative example 1:
the composition and mass ratio of the permanganate oxidized hot melt collagen material were the same as those of example 1. And is prepared as follows. The preparation method does not have the prefabrication step of preheating and vacuumizing the high molecular weight polyolefin.
S1: preheating a reaction kettle, adding part of petroleum resin into the reaction kettle, heating to 180 ℃, stirring at a stirring speed of 20-50 revolutions per minute until the petroleum resin is completely melted and keeping the temperature constant;
s2: introducing high molecular weight polyolefin and high melt index polypropylene into a reaction kettle through a pipeline, stirring at 20-40 r, and keeping the temperature at 180 ℃ after uniform stirring;
s3: sequentially adding the rest petroleum resin, all antioxidants and the silicon micropowder, and reducing the stirring speed by 10-30 revolutions; and after fully and uniformly stirring, introducing the mixture into a screw extruder for extrusion granulation.
Comparative example 2:
the permanganate oxidized hot melt collagen material comprises the following components in percentage by mass: 40 parts of high molecular weight polyolefin, 10 parts of high melt polypropylene, 30 parts of petroleum resin and 1 part of antioxidant. And the same preparation method as in example 1 was used as follows, except that no fine silica powder was added in step S4.
The raw material specifications used in the examples of the present invention are shown in table 1.
TABLE 1
The specific formulations of the examples and comparative examples of the present invention are shown in Table 2.
TABLE 2
Performance measurement:
the hot melt adhesive related properties provided in example 1 and comparative examples 1-2 of the present invention were measured by the following method:
(1) The softening point and the melt viscosity are detected according to the detection method of the related clauses of the HG/T3698-2002 EVA hot melt adhesive.
(2) The thermal stability test is to melt 100g of the glue sample at 160 ℃ and keep the glue sample at 160 ℃ for 4 hours, and then observe whether the color of the glue is obviously changed, if so, judge that the glue is unstable.
(3) Hot melt adhesive VOCs testing: according to test standard GB 18583-2008.
(4) Melt viscosity (cps, 180 ℃) test of the melt adhesive: ISO 3219 is performed according to industry standards.
(5) And a normal-temperature bonding strength testing step, namely respectively using the hot melt adhesive and the permanganate filter materials prepared in the embodiment 1, the comparative example 1 and the comparative example 2 to prepare filter finished products, testing the bonding strength of the filter finished products after the filter finished products are placed at room temperature for a set time, wherein the set time is 24-240 h as a testing gradient every 24h, and detecting according to the relevant clauses of a GB/T2790 adhesive T peeling strength testing method.
The results of the performance measurements of items (1) to (4) above are referred to in Table 3, and the results of the performance measurements of item (5) above are referred to in FIG. 1.
TABLE 3 Table 3
The test results shown in Table 3 were obtained by averaging a plurality of parallel samples, for example, the test sample in example 1, in which the VOCs content (g/kg) was 58, and the test sample in which 10 parallel samples were averaged.
In fig. 1: the filter of example 1 was tested at room temperature for 24 hours and showed a room temperature bond strength of 2.6kg/cm 2 The decrease is not obvious after 24 hours to 120 hours, and the normal temperature bonding strength is stable at 2.3kg/cm after 120 hours to 240 hours 2 The method comprises the steps of carrying out a first treatment on the surface of the It is not obvious that the hot melt adhesive is oxidized by the permanganate filter. The filter showed a room temperature adhesive strength of 2.Kg/cm for 24 hours after room temperature in comparative example 1 2 And has a certain descending trend after 24 hours to 120 hours, and the normal-temperature bonding strength is stable at 1.6kg/cm after 120 hours to 240 hours 2 The method comprises the steps of carrying out a first treatment on the surface of the Indicating that the low molecular weight substances in the hot melt adhesive are partially oxidized by the permanganate filter material. Comparative example 2 the filter was tested at room temperature for 24 hours to give a room temperature bond strength of 2.Kg/cm 2 And the normal-temperature bonding strength is greatly reduced after 24 to 240 hours; indicating that the hot melt adhesive is not seriously oxidized by the permanganate filter material due to the protection of the silica micropowder.
From the data in Table 3 and FIG. 1, it can be seen that the hot melt adhesive products prepared in this example 1, comparative example 1 and comparative example 2 have viscosities of 20000 to 30000CPS and higher melt viscosities, and can be suitably used for the final filter products related to the permanganate filter medium. The softening point is about 140 ℃, and the thermal stability test shows that the product has higher temperature resistance and prevents part of the product from aging under the condition of high temperature. When the high molecular weight polyolefin of comparative example 1 was not prefabricated by heating and vacuum pumping, the low molecular weight substances generated in the production process of the raw materials could not be effectively removed, resulting in the oxidation of the hot melt adhesive by the permanganate filter material and shortening of the life of the end product. When the formulation of example 1 and the preparation method are adopted, the hot melt adhesive is difficult to oxidize by the permanganate filter material, so that the service life of the end product is longer.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures disclosed herein or modifications in the equivalent processes, or any application of the structures disclosed herein, directly or indirectly, in other related arts.
Claims (8)
1. The anti-permanganate oxidation hot melt adhesive is characterized by comprising the following components in percentage by mass: 35-45 parts of high molecular weight polyolefin, 5-15 parts of high melt polypropylene, 25-35 parts of petroleum resin, 10-25 parts of silicon micropowder and 0.1-1 part of antioxidant.
2. The anti-permanganic acid oxidation hot melt adhesive according to claim 1, wherein the high molecular weight polyolefin is 37-42 parts, the high melt index polypropylene is 8-13 parts, the petroleum resin is 28-33 parts, the silica micropowder is 15-20 parts, and the antioxidant is 0.4-0.7 part.
3. The anti-permanganic acid oxidation hot melt adhesive according to claim 1, wherein the high molecular weight polyolefin is 40 parts, the high melt index polypropylene is 10 parts, the petroleum resin is 30 parts, the silica micropowder is 17 parts, and the antioxidant is 1 part.
4. The anti-permanganate oxidation hot melt adhesive of claim 1, wherein the high molecular weight polyolefin is one or a combination of more than two of low density polyethylene, high density polyethylene and polypropylene; the petroleum resin is one or two of C5 petroleum resin and C9 petroleum resin; the antioxidant is one or the combination of more than two of propionamide, triethylene glycol-diacrylate, pentaerythritol propionate, trimethylbenzene and antioxidant 264.
5. The anti-permanganate oxidizing hot melt adhesive of claim 1, wherein the particle size of the fine silica powder is less than 800 mesh.
6. The permanganate oxidation resistant hot melt adhesive of claim 1, wherein the high molecular weight polyolefin is preformed by heating and evacuating.
7. The anti-permanganate oxidizing hot melt adhesive of claim 1, wherein the anti-permanganate oxidizing hot melt adhesive has a softening point of 140 degrees and a viscosity of 20000 to 30000CPS.
8. The anti-permanganate oxidizing hot melt adhesive of any one of claims 1 to 7, wherein the anti-permanganate oxidizing hot melt adhesive is prepared by:
s1: preheating an extruder, proportionally adding high molecular weight polyolefin and high melt index polypropylene, heating to 180 ℃ and extruding, feeding into the next extruder for 2 times of extrusion, and outputting to a reaction kettle through a pipeline;
s2: preheating a reaction kettle, adding part of petroleum resin into the reaction kettle, heating to 180 ℃, stirring at a stirring speed of 20-50 revolutions per minute until the petroleum resin is completely melted and keeping the temperature constant;
s3: introducing high molecular weight polyolefin and high melt index polypropylene into a reaction kettle through a heating pipeline, stirring at 20-40 r, and keeping the temperature at 180 ℃ after uniform stirring;
s4: sequentially adding petroleum resin and antioxidant, and reducing the stirring speed by 10-30 revolutions; after fully and uniformly stirring, vacuumizing for 1 hour, and then introducing the mixture into a screw extruder for extrusion granulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311697959.0A CN117683487A (en) | 2023-12-12 | 2023-12-12 | Anti-permanganate oxidation hot melt adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311697959.0A CN117683487A (en) | 2023-12-12 | 2023-12-12 | Anti-permanganate oxidation hot melt adhesive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117683487A true CN117683487A (en) | 2024-03-12 |
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ID=90138607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311697959.0A Pending CN117683487A (en) | 2023-12-12 | 2023-12-12 | Anti-permanganate oxidation hot melt adhesive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117683487A (en) |
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2023
- 2023-12-12 CN CN202311697959.0A patent/CN117683487A/en active Pending
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