CN117683496A - Hot melt adhesive applied to PET filter material and preparation method thereof - Google Patents
Hot melt adhesive applied to PET filter material and preparation method thereof Download PDFInfo
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Abstract
The invention provides a hot melt adhesive applied to PET filter materials, which comprises the following raw material components, by mass, 5-20 parts of polyisobutylene, 15-30 parts of SEBS rubber, 10-20 parts of random polyolefin, 40-60 parts of petroleum resin, 0.1-1 part of an antioxidant and 1-5 parts of a polyolefin elastomer blend. The hot melt adhesive has the advantages of polyolefin hot melt adhesive and pressure-sensitive adhesive, has good cohesive force and finished product stiffness, also has good initial adhesion, can be well spread on a PET filter material and can form a thinner adhesive layer when being adhered to the PET filter material, has good initial adhesion, and can be positioned and shaped in a faster time; the filter material has good toughness, and after being bonded with each layer of material of the filter material, the whole filter material has stronger toughness and is not easy to damage in the use process.
Description
Technical Field
The invention belongs to the field of hot melt adhesive preparation, and particularly relates to a hot melt adhesive applied to PET filter materials and a preparation method thereof.
Background
The traditional air filtering mechanism mainly comprises mechanical filtration, including inertia effect, gravity effect, diffusion effect, interception effect and the like, and the filtering efficiency is directly influenced by the packing density and thickness of the filter material fibers, but the filtering resistance is usually larger, and the high-flux and low-energy-consumption filtering requirements cannot be met. In recent years, filtration technology based on electrostatic action has been attracting attention due to its significantly enhanced filtration effect, and common types include electret filters, electrostatic precipitators, and active electrostatic assisted air filters developed on the basis of both. In the filtering material using electrostatic action, PET (polyethylene terephthalate) material is often adopted as the base material of the filtering material, and a multi-layer structure such as a bonding layer, a conductive layer, a power storage layer and the like is constructed on the base material; in some technical schemes, a graphene layer is also formed on the surface of the PET material by spraying, so that the PET material is conductive, for example, chinese patent No. 113559726A discloses a composite nanofiber filter screen and a preparation method thereof, wherein the composite nanofiber filter screen comprises a PET substrate, a graphene PET layer with conductivity and a electret nanofiber layer. The PET material has a flat and smooth surface, and the traditional single hot melt adhesive is difficult to bond, and particularly when the PET material is bonded with other materials, a tight bonding structure is difficult to form.
Accordingly, there is a need to develop a hot melt adhesive that can be suitably used for bonding PET filters.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a hot melt adhesive suitable for PET filter material adhesion and a preparation method thereof.
The invention provides a hot melt adhesive applied to PET filter materials, which comprises the following raw material components, by mass, 5-20 parts of polyisobutylene, 15-30 parts of SEBS (hydrogenated styrene-butadiene block copolymer) rubber, 10-20 parts of random polyolefin, 40-60 parts of petroleum resin, 0.1-1 part of antioxidant and 1-5 parts of polyolefin elastomer blend.
Preferably, the polyolefin elastomer blend is a blend of polypropylene and polyolefin elastomer, the mass fraction of polyolefin elastomer in the polyolefin elastomer blend being 15% to 50%.
Preferably, 1-5 parts of terpene phenol resin is also included.
Preferably, the raw material components comprise, by mass, 10-15 parts of polyisobutylene, 15-25 parts of SEBS rubber, 10-20 parts of random polyolefin, 40-50 parts of petroleum resin, 1-5 parts of terpene phenol resin, 0.1-1 part of antioxidant and 1-5 parts of polyolefin elastomer blend.
Preferably, the raw material components comprise 15 parts by weight of polyisobutylene, 25 parts by weight of SEBS rubber, 20 parts by weight of random polyolefin, 50 parts by weight of petroleum resin, 5 parts by weight of terpene phenol resin, 0.5 part by weight of antioxidant and 4 parts by weight of polyolefin elastomer blend.
Preferably, the petroleum resin is one or more of a C5 petroleum resin, a C9 petroleum resin, or a C5/C9 copolymerized petroleum resin.
Preferably, the antioxidant is an aromatic amine antioxidant.
The invention also provides a preparation method of the hot melt adhesive applied to the PET filter material, which is characterized by comprising the following steps of:
step 1: preheating a reaction kettle;
step 2: adding polyisobutene into the reaction kettle, heating the reaction kettle to 180 ℃ and keeping stirring at a stirring speed of 20-50r/min until the polyisobutene is completely melted, and keeping the constant temperature of 180 ℃;
step 3: according to the viscosity of the raw materials from low to high, sequentially adding the polyolefin elastomer blend and the random polyolefin, melting one by one, maintaining the stirring speed at 20-50r/min, completely melting the raw materials, and keeping the constant temperature at 180 ℃;
step 4: heating and melting SEBS rubber outside the reaction kettle, introducing the melted SEBS rubber into the reaction kettle, maintaining the stirring speed at 20-40r/min, and keeping the constant temperature at 180 ℃;
step 5: sequentially adding petroleum resin and antioxidant, maintaining stirring speed at 10-30r/min, stirring uniformly, and introducing into a screw extruder for extrusion granulation.
Preferably, when the terpene phenol resin is added, the terpene phenol resin is added to the reaction vessel together with the petroleum resin to be heated and melted in step 5.
In the invention, the polyisobutene is used as a viscosity and opening time regulator, has good fluidity and dispersibility, and the SEBS rubber has good surface wetting and spreading performance and can provide good initial adhesion and wetting; the random polyolefin provides better toughness and tension, and has better compatibility with petroleum resin, and the petroleum resin is used as a tackifier, so that the adhesiveness of the product and the compatibility of the elastomer are effectively improved; the polyolefin elastomer blend can provide good toughening performance, and a 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.
Compared with the prior art, the hot melt adhesive provided by the invention has the following beneficial effects:
1. the hot melt adhesive has the advantages of polyolefin hot melt adhesive and pressure-sensitive adhesive, has good cohesive force and finished product stiffness, also has good initial adhesion, can be well spread on a PET filter material and can form a thinner adhesive layer when being adhered to the PET filter material, has good initial adhesion, and can be positioned and shaped in a faster time;
2. the hot melt adhesive has good toughness, and after being adhered to each layer of material of the filter material, the whole filter material has stronger toughness and is not easy to damage in the use process.
Detailed Description
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 embodiment of the invention provides a hot melt adhesive applied to PET filter materials, which comprises, by mass, 5-20 parts of polyisobutylene, 15-30 parts of SEBS (hydrogenated styrene-butadiene block copolymer) rubber, 10-20 parts of random polyolefin, 40-60 parts of petroleum resin, 0.1-1 part of an antioxidant and 1-5 parts of a polyolefin elastomer blend.
In this example, the polyolefin elastomer blend is a blend of polypropylene (PP) and polyolefin elastomer (POE) in which the mass fraction of polyolefin elastomer is 15% to 50%. Polyolefin elastomer POE refers to a random copolymer elastomer which adopts metallocene catalyst to realize in-situ polymerization of ethylene and high-carbon alpha-olefin (1-butene, 1-hexene, 1-octene, etc.), and has excellent physical and mechanical properties, good low temperature resistance and processing rheological property due to the special molecular structure, and the blend of POE and PP has better toughness and fluidity.
In a preferred embodiment, the components of the hot melt adhesive further comprise 1-5 parts of a terpene phenol resin. The terpene-phenol resin is a resin formed by polymerizing terpene resin and phenol, has good polarity, can be fused with most film forming substances, and can improve the ductility and the flexibility of the adhesive in this way, thereby improving the quality of the adhesive.
In a preferred embodiment, the hot melt adhesive comprises, by mass, 10-15 parts of polyisobutylene, 15-25 parts of SEBS rubber, 10-20 parts of random polyolefin, 40-50 parts of petroleum resin, 1-5 parts of terpene phenol resin, 0.1-1 part of antioxidant and 1-5 parts of polyolefin elastomer blend.
In a preferred embodiment, the hot melt adhesive comprises, by mass, 15 parts of polyisobutylene, 25 parts of SEBS rubber, 20 parts of random polyolefin, 50 parts of petroleum resin, 5 parts of terpene-phenol resin, 0.5 part of antioxidant and 4 parts of polyolefin elastomer blend.
In this embodiment, the petroleum resin is one or more of a C5 petroleum resin, a C9 petroleum resin, or a C5/C9 copolymerized petroleum resin. The petroleum resin is added into the formula as the tackifying resin, and the petroleum resin can improve the wettability of the hot melt adhesive to the base material, so that the hot melt adhesive and filter materials of different layers are fully contacted and bonded, thereby improving the bonding strength, improving the peeling strength of the adhesive, prolonging the service life and reducing creep; in addition, the petroleum resin can endow the hot melt adhesive with better initial viscosity, and further improve the bonding effect of the hot melt adhesive when bonding PET filter materials.
In this embodiment, the antioxidant is an aromatic amine antioxidant. The aromatic amine antioxidant participates in the oxidation reaction by providing hydrogen atoms in the reaction process, generates intermediates and further performs coupling reaction to remove free radicals in the reaction process.
The preferred embodiment of the invention also provides a preparation method of the hot melt adhesive applied to the PET filter material, which is characterized by comprising the following steps of:
step 1: preheating a reaction kettle;
step 2: adding polyisobutene into the reaction kettle, heating the reaction kettle to 180 ℃ and keeping stirring at a stirring speed of 20-50r/min until the polyisobutene is completely melted, and keeping the constant temperature of 180 ℃;
step 3: according to the viscosity of the raw materials from low to high, sequentially adding the polyolefin elastomer blend and the random polyolefin, melting one by one, maintaining the stirring speed at 20-50r/min, completely melting the raw materials, and keeping the constant temperature at 180 ℃;
step 4: heating and melting SEBS rubber outside the reaction kettle, introducing the melted SEBS rubber into the reaction kettle, maintaining the stirring speed at 20-40r/min, and keeping the constant temperature at 180 ℃;
step 5: sequentially adding petroleum resin and antioxidant, maintaining stirring speed at 10-30r/min, stirring uniformly, and introducing into a screw extruder for extrusion granulation.
Wherein, when the terpene phenol resin is added, in step 5, the terpene phenol resin is added into the reaction kettle together with the petroleum resin to be heated and melted.
In the invention, the polyisobutene is used as a viscosity and opening time regulator, has good fluidity and dispersibility, and the SEBS rubber has good surface wetting and spreading performance and can provide good initial adhesion and wetting; the random polyolefin provides better toughness and tension, and has better compatibility with petroleum resin, and the petroleum resin is used as a tackifier, so that the adhesiveness of the product and the compatibility of the elastomer are effectively improved; the polyolefin elastomer blend can provide good toughening performance, and a 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.
Specific examples and comparative examples are described in detail below.
Example 1
Comprises 5 parts of polyisobutylene, 15 parts of SEBS rubber, 10 parts of random polyolefin, 40 parts of petroleum resin, 0.1 part of antioxidant and 2 parts of polyolefin elastomer blend.
The preparation method comprises the following steps:
step 1: preheating a reaction kettle;
step 2: adding polyisobutene into a reaction kettle, heating the reaction kettle to 180 ℃ and keeping stirring at a stirring speed of 30r/min until the polyisobutene is completely melted, and keeping the constant temperature of 180 ℃;
step 3: according to the viscosity of the raw materials from low to high, sequentially adding the polyolefin elastomer blend and the random polyolefin, melting one by one, maintaining the stirring speed at 30r/min, completely melting the raw materials, and keeping the constant temperature at 180 ℃;
step 4: heating and melting SEBS rubber outside the reaction kettle, introducing the melted SEBS rubber into the reaction kettle, maintaining the stirring speed at 30r/min, and keeping the constant temperature at 180 ℃;
step 5: sequentially adding petroleum resin and an antioxidant, maintaining the stirring speed at 20r/min, and introducing into a screw extruder for extrusion granulation after uniform stirring.
Example 2
The modified polyurethane comprises, by mass, 5 parts of polyisobutylene, 15 parts of SEBS rubber, 10 parts of random polyolefin, 40 parts of petroleum resin, 0.1 part of antioxidant, 2 parts of polyolefin elastomer blend and 2 parts of terpene phenol resin.
The preparation method comprises the following steps:
step 1: preheating a reaction kettle;
step 2: adding polyisobutene into a reaction kettle, heating the reaction kettle to 180 ℃ and keeping stirring at a stirring speed of 30r/min until the polyisobutene is completely melted, and keeping the constant temperature of 180 ℃;
step 3: according to the viscosity of the raw materials from low to high, sequentially adding the polyolefin elastomer blend and the random polyolefin, melting one by one, maintaining the stirring speed at 30r/min, completely melting the raw materials, and keeping the constant temperature at 180 ℃;
step 4: heating and melting SEBS rubber outside the reaction kettle, introducing the melted SEBS rubber into the reaction kettle, maintaining the stirring speed at 30r/min, and keeping the constant temperature at 180 ℃;
step 5: sequentially adding petroleum resin, terpene phenol resin and antioxidant, maintaining stirring speed at 20r/min, stirring uniformly, and introducing into a screw extruder for extrusion granulation.
Example 3
The modified polyurethane comprises, by mass, 5 parts of polyisobutylene, 20 parts of SEBS rubber, 10 parts of random polyolefin, 40 parts of petroleum resin, 0.1 part of antioxidant, 2 parts of polyolefin elastomer blend and 2 parts of terpene phenol resin.
The preparation method is the same as in example 2.
Example 4
The modified polyurethane comprises, by mass, 5 parts of polyisobutylene, 30 parts of SEBS rubber, 10 parts of random polyolefin, 40 parts of petroleum resin, 0.1 part of antioxidant, 2 parts of polyolefin elastomer blend and 2 parts of terpene phenol resin.
The preparation method is the same as in example 2.
Example 5
The modified polyurethane comprises, by mass, 5 parts of polyisobutylene, 15 parts of SEBS rubber, 10 parts of random polyolefin, 40 parts of petroleum resin, 0.1 part of antioxidant, 5 parts of polyolefin elastomer blend and 2 parts of terpene phenol resin.
The preparation method is the same as in example 2.
Comparative example 1
Comprises 5 parts of polyisobutylene, 10 parts of random polyolefin, 40 parts of petroleum resin, 0.1 part of antioxidant and 2 parts of polyolefin elastomer blend.
The preparation method is the same as in example 1.
Comparative example 2
Comprises 5 parts of polyisobutylene, 50 parts of SEBS rubber, 10 parts of random polyolefin, 40 parts of petroleum resin, 0.1 part of antioxidant and 2 parts of polyolefin elastomer blend.
The preparation method is the same as in example 1.
Comparative example 3
Comprises 5 parts of polyisobutylene, 15 parts of SEBS rubber, 10 parts of random polyolefin, 40 parts of petroleum resin and 0.1 part of antioxidant by mass.
The preparation method is the same as in example 1.
Performance tests were carried out on the hot melt adhesives prepared in examples 1 to 5 and comparative examples 1 to 3 or the hot melt adhesives after sizing, and the test items and results were as follows:
1. viscosity test method
Viscosity was measured according to GB/T2794-2013 Single Cylinder rotational viscometer, measurement of adhesive viscosity, results are reported in centipoise (cps).
2. Annular primary tack test: the test was performed according to the specifications of the national standard GB/T31125-2014, the results being recorded in N/inch.
3. Tensile strength test method: the object of measurement is a hot melt adhesive after application.
Determination of tensile Properties of plastics according to GB/T1040.1-2018 section 1: general rule, tensile strength was measured and the results reported in MPa.
4. 180 ° peel strength test: the test was performed according to the specifications of the national standard GB/T2792-2014, and the results were recorded in N/inch.
5. Content test of harmful substances: the third party inspection and detection service unit is entrusted to test whether cadmium, lead, mercury, hexavalent chromium, polybrominated diphenyl ethers (PBBs), polybrominated diphenyl ethers (PSDEs), phthalates (such as dibutyl phthalate (DBP), butyl Benzyl Phthalate (BBP), di (2-ethylhexyl) phthalate (DEHP) and diisobutyl phthalate (DIBP)) and the like meet the limit requirements of the European Union RoHS directive 2011/65/EU appendix II correction directive (EU) 2015/863.
6. Softening point test method: the measured object is hot melt adhesive without applying hair treatment
The results were recorded in degrees Celsius (C.) as measured according to GB/T15332-1994 method for measuring the softening point of hot melt adhesives.
The test results of the test items are as follows:
table 1: examples Hot melt adhesive Performance test data summary table
| Test item | Example 1 | Examples2 | Example 3 | Example 4 | Example 5 |
| Viscosity cps (180 ℃ C.) | 5438 | 5621 | 5811 | 5765 | 5698 |
| Softening point (DEG C) | 112 | 113 | 115 | 117 | 113 |
| Initial adhesion N/inch | 35 | 35 | 40 | 42 | 36 |
| Peel strength N/inch | 43 | 43 | 45 | 46 | 43 |
| Tensile strength MPa | 13.4 | 15.3 | 15.7 | 15.9 | 16.0 |
| Content test of harmful substances | By passing through | By passing through | By passing through | By passing through | By passing through |
As shown in Table 1, compared with the hot melt adhesive prepared in example 1, the hot melt adhesive prepared in example 2 of the invention is added with terpene phenol resin, and other components are the same, and as can be seen from the data in Table 1, after the terpene phenol resin is added, the tensile strength of the hot melt adhesive is obviously improved; in examples 2-4, the parts of SEBS rubber are gradually increased in the hot melt adhesive, and the initial adhesion, the peel strength and the tensile strength of the hot melt adhesive are gradually increased along with the increase of the SEBS rubber, and the viscosity is increased firstly and then slightly reduced; example 5 shows that the tensile strength of the hot melt adhesive is significantly improved after the polyolefin elastomer blend content is increased as compared with example 2.
Table 2: comparative example Hot melt adhesive Performance test data summary table
Table 2 shows the summary of the data of comparative examples 1-3, wherein comparative examples 1-3 are comparative example 1, no SEBS rubber is added in comparative example 1, other components and preparation methods are the same, and as can be seen from Table 2, under the condition that no SEBS rubber is added, each performance index is obviously reduced in comparison with example 1, and the performance is completely not up to standard; compared with the example 1, the comparative example obviously increases the usage amount of the SEBS rubber, and can be seen that after the content of the SEBS rubber is obviously increased, various index values are obviously increased, but the viscosity is too large, the SEBS rubber is easy to be sticky in the use process, the softening point is higher, the temperature is higher in the use process of sizing, and the production is not easy to be carried out; comparative example 3 shows that the tensile strength is significantly reduced by not much difference in performance index, except for the tensile strength, compared with example 1 in which the polyolefin elastomer blend was not added.
The hot melt adhesive provided by the invention has good initial adhesion performance, peeling strength and tensile property, can provide good initial adhesion force when being applied to the adhesion of PET filter materials, can relatively quickly position and adhere the PET filter materials and other filter layers, and can also ensure that the whole filter materials have good toughness.
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 (9)
1. The hot melt adhesive for PET filter material is characterized by comprising, by mass, 5-20 parts of polyisobutylene, 15-30 parts of SEBS rubber, 10-20 parts of random polyolefin, 40-60 parts of petroleum resin, 0.1-1 part of antioxidant and 1-5 parts of polyolefin elastomer blend.
2. The hot melt adhesive for PET filter material according to claim 1, wherein the polyolefin elastomer blend is a blend of polypropylene and polyolefin elastomer, and the mass fraction of the polyolefin elastomer in the polyolefin elastomer blend is 15% to 50%.
3. The hot melt adhesive for PET filter material according to claim 2, further comprising 1 to 5 parts of terpene phenol resin.
4. The hot melt adhesive for PET filter material according to claim 3, wherein the raw material components comprise, by mass, 10-15 parts of polyisobutylene, 15-25 parts of SEBS rubber, 10-20 parts of random polyolefin, 40-50 parts of petroleum resin, 1-5 parts of terpene phenol resin, 0.1-1 part of antioxidant and 1-5 parts of polyolefin elastomer blend.
5. The hot melt adhesive for PET filter material according to claim 4, wherein the raw material components comprise 15 parts by weight of polyisobutylene, 25 parts by weight of SEBS rubber, 20 parts by weight of random polyolefin, 50 parts by weight of petroleum resin, 5 parts by weight of terpene phenol resin, 0.5 part by weight of antioxidant and 4 parts by weight of polyolefin elastomer blend.
6. The hot melt adhesive for PET filter material according to claim 1, wherein the petroleum resin is one or more of C5 petroleum resin, C9 petroleum resin or C5/C9 copolymerized petroleum resin.
7. The hot melt adhesive for PET filter material according to claim 1, wherein the antioxidant is an aromatic amine antioxidant.
8. A method for preparing a hot melt adhesive for PET filter according to any one of claims 1 to 7, comprising the steps of:
step 1: preheating a reaction kettle;
step 2: adding polyisobutene into the reaction kettle, heating the reaction kettle to 180 ℃ and keeping stirring at a stirring speed of 20-50r/min until the polyisobutene is completely melted, and keeping the constant temperature of 180 ℃;
step 3: according to the viscosity of the raw materials from low to high, sequentially adding the polyolefin elastomer blend and the random polyolefin, melting one by one, maintaining the stirring speed at 20-50r/min, completely melting the raw materials, and keeping the constant temperature at 180 ℃;
step 4: heating and melting SEBS rubber outside the reaction kettle, introducing the melted SEBS rubber into the reaction kettle, maintaining the stirring speed at 20-40r/min, and keeping the constant temperature at 180 ℃;
step 5: sequentially adding petroleum resin and antioxidant, maintaining stirring speed at 10-30r/min, stirring uniformly, and introducing into a screw extruder for extrusion granulation.
9. The method for preparing a hot melt adhesive for PET filter according to claim 7, wherein when the terpene phenol resin is added, the terpene phenol resin is added to the reaction vessel together with the petroleum resin to be heated and melted in step 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311738466.7A CN117683496A (en) | 2023-12-18 | 2023-12-18 | Hot melt adhesive applied to PET filter material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311738466.7A CN117683496A (en) | 2023-12-18 | 2023-12-18 | Hot melt adhesive applied to PET filter material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117683496A true CN117683496A (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311738466.7A Pending CN117683496A (en) | 2023-12-18 | 2023-12-18 | Hot melt adhesive applied to PET filter material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117683496A (en) |
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2023
- 2023-12-18 CN CN202311738466.7A patent/CN117683496A/en active Pending
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