CN112300732B - Hot melt adhesive - Google Patents
Hot melt adhesive Download PDFInfo
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- CN112300732B CN112300732B CN202011295240.0A CN202011295240A CN112300732B CN 112300732 B CN112300732 B CN 112300732B CN 202011295240 A CN202011295240 A CN 202011295240A CN 112300732 B CN112300732 B CN 112300732B
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- hot melt
- olefin copolymer
- melt adhesive
- antioxidant
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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
- 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
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- 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
- C09J11/08—Macromolecular additives
-
- 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
- C09J157/00—Adhesives based on unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09J157/02—Copolymers of mineral oil hydrocarbons
-
- 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
-
- 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)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention relates to the technical field of hot melt adhesives, and particularly discloses a hot melt adhesive which comprises the following components in parts by weight: 40-60 parts of amorphous alpha-olefin copolymer, 3-8 parts of maleic anhydride grafted styrene-butadiene copolymer, 3-10 parts of polyphenylene oxide oligomer, 30-50 parts of tackifier, 3-10 parts of plasticizer, 3-10 parts of viscosity regulator and 0.5-2 parts of antioxidant. The amorphous alpha-olefin copolymer, the maleic anhydride grafted styrene-butadiene copolymer and the polyphenylene oxide oligomer are introduced to improve the overall performance, so that the hot melt adhesive has excellent torque force and temperature resistance, has excellent adhesive force to metal and compact or difficult-to-permeate base materials, maintains the adhesive strength of the heat-insulating cup cover in a high-temperature environment, and avoids the quality problems of reduction or delamination and the like of the adhesive strength of the heat-insulating cup cover caused by the change of the environmental temperature.
Description
Technical Field
The invention relates to the technical field of hot melt adhesives, in particular to a hot melt adhesive applied to a heat-preservation cup cover.
Background
At present, hot melt adhesive is widely used in many domestic industries as a plastic adhesive due to the advantages of no solvent, no pollution and high curing speed. Because the environment-friendly and safe plastic cup meets the standards of the food industry, the plastic cup is gradually applied to some products in the food industry, such as a vacuum cup and the like. Most hot melt adhesives sold on the market at present have insufficient torque force and weak bonding force at high temperature of 90 ℃ when being used for bonding the heat-insulating cup cover, and can cause the separation of the outer shell and the inner core of the heat-insulating cup cover, thereby causing the problem of product quality.
Disclosure of Invention
The invention provides a hot melt adhesive, and aims to solve the problem that when the hot melt adhesive is used for bonding a heat-preservation cup cover, the torque force is insufficient at high temperature, the bonding force is not strong, and the outer shell and the inner core of the heat-preservation cup cover are separated.
The technical scheme adopted by the invention for solving the technical problems is as follows: the hot melt adhesive comprises the following components in parts by weight:
40-60 parts of amorphous alpha-olefin copolymer;
3-8 parts of maleic anhydride grafted styrene-butadiene copolymer;
3-10 parts of polyphenylene oxide oligomer;
30-50 parts of a tackifier;
3-10 parts of a plasticizer;
3-10 parts of a viscosity regulator;
0.5-2 parts of an antioxidant;
the amorphous alpha-olefin copolymer comprises an amorphous alpha-olefin copolymer with a high softening point and an amorphous alpha-olefin copolymer with a low softening point, wherein the softening points of the amorphous alpha-olefin copolymer and the amorphous alpha-olefin copolymer are respectively 160 ℃ and 100 ℃, and the mass ratio of the softening points to the amorphous alpha-olefin copolymer is 1 (1-3).
Preferably, the mass ratio of the high-softening-point amorphous α -olefin copolymer to the low-softening-point amorphous α -olefin copolymer is 1: 2.
Preferably, the graft ratio in the maleic anhydride-grafted styrene-butadiene copolymer is 2%.
Preferably, the tackifier is at least one selected from hydrogenated C5 petroleum resin and hydrogenated C9 petroleum resin.
Preferably, the plasticizer is at least one selected from naphthenic oil and polyisobutylene.
Preferably, the viscosity modifier is selected from at least one of paraffin wax, PP wax, PE wax.
Preferably, the antioxidant is at least one selected from the group consisting of antioxidant 1076, antioxidant 1010, antioxidant 264, antioxidant BHT, and antioxidant 168.
The preparation method of the hot melt adhesive comprises the following steps:
putting 3-10 parts of plasticizer, 40-60 parts of amorphous alpha-olefin copolymer, 3-8 parts of maleic anhydride grafted styrene-butadiene copolymer, 0.5-2 parts of antioxidant and 3-10 parts of viscosity regulator into a reaction kettle, heating and mixing, wherein the heating temperature is 170-180 ℃, the stirring is carried out while vacuumizing is carried out until all components are completely melted, the stirring speed is 25rpm, and the stirring time is 120 min; then adding 30-50 parts of tackifier and 3-10 parts of polyphenylene oxide oligomer, stirring and mixing at the stirring speed of 30rpm for 30min until the polyphenylene oxide oligomer is completely melted; and vacuumizing the reaction system until no bubbles exist, and stirring and mixing uniformly to obtain the hot melt adhesive.
Compared with the prior art, the technical scheme of the invention has the following advantages:
the hot melt adhesive disclosed by the invention is made of environment-friendly materials, the solid content of the product is 100%, the VOC is low, and the environment-friendly requirements of food and daily chemical industries are met; the amorphous alpha-olefin copolymer, the maleic anhydride grafted styrene-butadiene copolymer and the polyphenylene oxide oligomer are introduced to improve the overall performance, so that the hot melt adhesive has excellent torque force and temperature resistance, has excellent adhesive force to metal and compact or difficult-to-permeate base materials, maintains the adhesive strength of the heat-insulating cup cover in a high-temperature environment, and avoids the quality problems of reduction or delamination and the like of the adhesive strength of the heat-insulating cup cover caused by the change of the environmental temperature.
Detailed Description
The following further describes the embodiments of the present invention. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The hot melt adhesive comprises the following components in parts by weight:
40-60 parts of amorphous alpha-olefin copolymer;
3-8 parts of maleic anhydride grafted styrene-butadiene copolymer;
3-10 parts of polyphenylene oxide oligomer;
30-50 parts of a tackifier;
3-10 parts of a plasticizer;
3-10 parts of a viscosity regulator;
0.5-2 parts of an antioxidant;
the amorphous alpha-olefin copolymer is compounded by using the amorphous alpha-olefin copolymer with high softening point and low softening point, the compounded amorphous alpha-olefin copolymer has strong affinity to plastics and metals, the torque force of the hot melt adhesive for the heat-insulating cup cover is improved, and the heat-insulating cup cover finally has strong adhesive force and high temperature resistance.
The maleic anhydride grafted styrene-butadiene copolymer is matched with the main polymer to further improve the adhesion to non-polar materials and polar materials, and the grafting rate of the maleic anhydride is 2%.
The polyphenylene oxide oligomer is also called polyphenylene oxide, has the advantages of high rigidity, high heat resistance and the like, and the polyphenylene oxide oligomer has higher content and better heat resistance, and is mixed with a main polymer to further improve the high temperature resistance of the product, so that the heat-insulating cup cover bonded by the product cannot be unscrewed at high temperature.
The tackifier is selected from hydrogenated C5 petroleum resin and hydrogenated C9 petroleum resin. The hydrogenated petroleum resin is modified by hydrogenation to destroy the original double bond in the petroleum resin, so that the double bond is formed, and the performances of weather resistance, adhesion, stability and the like of the hydrogenated petroleum resin can be improved. The hydrogenated C5 petroleum resin can effectively improve initial viscosity of colloid, improve colloid wettability and the like, and the hydrogenated C9 petroleum resin does not contain polar groups in the structure, has good water resistance, acid and alkali resistance, weather resistance and light aging resistance, has good compatibility with other resins, and also has tackifying property, caking property and plasticity. In the scheme, the hydrogenated C5 petroleum resin and the hydrogenated C9 petroleum resin are mixed for use, so that the peel strength of the hot melt adhesive for the heat preservation cup cover can be greatly improved.
The plasticizer is selected from polyisobutylene, and has the effects of reducing viscosity, facilitating production and moderately improving the low-temperature performance of the product.
The viscosity modifier is selected from PP wax, and is mainly used for adjusting the opening time and the curing time.
The antioxidant is at least one selected from antioxidant 1076, antioxidant 1010, antioxidant 264, antioxidant BHT and antioxidant 168, and mainly prevents premature aging of the main polymer, because the colloid is oxidized and decomposed at a high temperature during melting, and the addition of the antioxidant can ensure that the bonding property is not changed under a high-temperature condition.
The following further describes embodiments of the present invention by way of specific examples:
example 1
Putting 3 parts of plasticizer, 55 parts of amorphous alpha-olefin copolymer, 3 parts of maleic anhydride grafted styrene-butadiene copolymer, 0.5 part of antioxidant and 4 parts of viscosity regulator into a reaction kettle, heating and mixing at the temperature of 170 ℃, vacuumizing while stirring until all components are completely melted, wherein the stirring speed is 25rpm, and the stirring time is 120 min; then adding 35 parts of tackifier and 8 parts of polyphenylene oxide oligomer, stirring and mixing at the stirring speed of 30rpm for 30min until the polyphenylene oxide oligomer is completely melted; and vacuumizing the reaction system until no bubbles exist, and stirring and mixing uniformly to obtain the hot melt adhesive.
Example 2
Putting 5 parts of plasticizer, 40 parts of amorphous alpha-olefin copolymer, 5 parts of maleic anhydride grafted styrene-butadiene copolymer, 1 part of antioxidant and 10 parts of viscosity regulator into a reaction kettle, heating and mixing, wherein the heating temperature is 175 ℃, the stirring is carried out while vacuumizing is carried out until all components are completely melted, the stirring speed is 25rpm, and the stirring time is 120 min; then adding 40 parts of tackifier and 10 parts of polyphenylene oxide oligomer, stirring and mixing at the stirring speed of 30rpm for 30min until the polyphenylene oxide oligomer is completely melted; and vacuumizing the reaction system until no bubbles exist, and stirring and mixing uniformly to obtain the hot melt adhesive.
Example 3
Putting 3 parts of plasticizer, 50 parts of amorphous alpha-olefin copolymer, 8 parts of maleic anhydride grafted styrene-butadiene copolymer, 1 part of antioxidant and 4 parts of viscosity regulator into a reaction kettle, heating and mixing, wherein the heating temperature is 180 ℃, the stirring is carried out while vacuumizing is carried out until all components are completely melted, the stirring speed is 25rpm, and the stirring time is 120 min; then adding 35 parts of tackifier and 5 parts of polyphenylene oxide oligomer, stirring and mixing at the stirring speed of 30rpm for 30min until the polyphenylene oxide oligomer is completely melted; and vacuumizing the reaction system until no bubbles exist, and stirring and mixing uniformly to obtain the hot melt adhesive.
Example 4
Putting 3 parts of plasticizer, 60 parts of amorphous alpha-olefin copolymer, 4 parts of maleic anhydride grafted styrene-butadiene copolymer, 1.5 parts of antioxidant and 3 parts of viscosity regulator into a reaction kettle, heating and mixing, wherein the heating temperature is 180 ℃, the stirring is carried out while vacuumizing is carried out until all components are completely melted, the stirring speed is 25rpm, and the stirring time is 120 min; then adding 30 parts of tackifier and 3 parts of polyphenylene oxide oligomer, stirring and mixing at the stirring speed of 30rpm for 30min until the polyphenylene oxide oligomer is completely melted; and vacuumizing the reaction system until no bubbles exist, and stirring and mixing uniformly to obtain the hot melt adhesive.
Example 5
Putting 10 parts of plasticizer, 40 parts of amorphous alpha-olefin copolymer and 2 parts of antioxidant into a reaction kettle, heating and mixing at 180 ℃, vacuumizing and stirring until all components are completely melted, wherein the stirring speed is 25rpm, and the stirring time is 120 min; then adding 50 parts of tackifier and 4 parts of polyphenylene oxide oligomer, stirring and mixing at the stirring speed of 30rpm for 30min until the polyphenylene oxide oligomer is completely melted; and vacuumizing the reaction system until no bubbles exist, and stirring and mixing uniformly to obtain the hot melt adhesive.
The hot melt adhesive of the above five examples and a commercially available bottle cap adhesive were subjected to the following performance tests:
the test results obtained were as follows:
the amorphous alpha-olefin copolymer is a nonpolar polymer, has good weather resistance, low VOC, excellent heat resistance of the high-softening-point amorphous alpha-olefin copolymer, strong adhesion of the low-softening-point amorphous alpha-olefin copolymer to materials, and compounding of the high-softening-point amorphous alpha-olefin copolymer and the low-softening-point amorphous alpha-olefin copolymer, and the two are matched for use, so that the product has high temperature resistance and strong adhesion. The maleic anhydride grafted styrene-butadiene copolymer is used in a matching way, so that the adhesive force to the non-polar material and the low-temperature flexibility are improved. Meanwhile, polyphenylene oxide oligomer is added in an auxiliary manner, so that the high temperature resistance and rigidity of the product are further improved, and the high-temperature torque force of the product on the heat-insulating cup cover is greatly improved. The blending of the amorphous alpha-olefin copolymer, the maleic anhydride grafted styrene-butadiene copolymer and the polyphenylene oxide oligomer can play a role in synergy for a hot melt adhesive system, and improve the bonding performance of the hot melt adhesive to bonding materials at high temperature. The hydrogenated C5 petroleum resin effectively improves initial viscosity of colloid and wettability of colloid, and the hydrogenated C9 petroleum resin effectively improves initial viscosity and rigidity of colloid, and the initial viscosity and the rigidity are matched to improve adhesion to materials.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (8)
1. The hot melt adhesive is characterized by comprising the following components in parts by weight:
40-60 parts of amorphous alpha-olefin copolymer;
3-8 parts of maleic anhydride grafted styrene-butadiene copolymer;
3-10 parts of polyphenylene oxide oligomer;
30-50 parts of a tackifier;
3-10 parts of a plasticizer;
3-10 parts of a viscosity regulator;
0.5-2 parts of an antioxidant;
the amorphous alpha-olefin copolymer comprises an amorphous alpha-olefin copolymer with a high softening point and an amorphous alpha-olefin copolymer with a low softening point, wherein the softening points of the amorphous alpha-olefin copolymer and the amorphous alpha-olefin copolymer are respectively 160 ℃ and 100 ℃, and the mass ratio of the softening points to the amorphous alpha-olefin copolymer is 1 (1-3).
2. The hot melt adhesive of claim 1, wherein: the mass ratio of the high-softening-point amorphous alpha-olefin copolymer to the low-softening-point amorphous alpha-olefin copolymer is 1: 2.
3. The hot melt adhesive of claim 1, wherein: the grafting ratio of the maleic anhydride-grafted styrene-butadiene copolymer was 2%.
4. The hot melt adhesive of claim 1, wherein: the tackifier is at least one selected from hydrogenated C5 petroleum resin and hydrogenated C9 petroleum resin.
5. The hot melt adhesive of claim 1, wherein: the plasticizer is at least one of naphthenic oil and polyisobutene.
6. The hot melt adhesive of claim 1, wherein: the viscosity regulator is at least one selected from paraffin wax, PP wax and PE wax.
7. The hot melt adhesive of claim 1, wherein: the antioxidant is at least one selected from antioxidant 1076, antioxidant 1010, antioxidant 264, antioxidant BHT and antioxidant 168.
8. The hot melt adhesive according to claim 1, which comprises the following preparation steps:
putting 3-10 parts of plasticizer, 40-60 parts of amorphous alpha-olefin copolymer, 3-8 parts of maleic anhydride grafted styrene-butadiene copolymer, 0.5-2 parts of antioxidant and 3-10 parts of viscosity regulator into a reaction kettle, heating and mixing, wherein the heating temperature is 170-180 ℃, the stirring is carried out while vacuumizing is carried out until all components are completely melted, the stirring speed is 25rpm, and the stirring time is 120 min; then adding 30-50 parts of tackifier and 3-10 parts of polyphenylene oxide oligomer, stirring and mixing at the stirring speed of 30rpm for 30min until the polyphenylene oxide oligomer is completely melted; and vacuumizing the reaction system until no bubbles exist, and stirring and mixing uniformly to obtain the hot melt adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011295240.0A CN112300732B (en) | 2020-11-18 | 2020-11-18 | Hot melt adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011295240.0A CN112300732B (en) | 2020-11-18 | 2020-11-18 | Hot melt adhesive |
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| CN112300732A CN112300732A (en) | 2021-02-02 |
| CN112300732B true CN112300732B (en) | 2022-02-11 |
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| CN202011295240.0A Active CN112300732B (en) | 2020-11-18 | 2020-11-18 | Hot melt adhesive |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104640950A (en) * | 2012-07-16 | 2015-05-20 | 波士胶公司 | Polypropylene impact copolymer based hot melt adhesive |
| CN105111995A (en) * | 2015-09-28 | 2015-12-02 | 佛山南宝高盛高新材料有限公司 | Maleic anhydride grafted styrene block copolymer blended modified polyurethane hot melt adhesive and preparation method thereof |
| CN106497456A (en) * | 2016-09-22 | 2017-03-15 | 重庆中科力泰高分子材料股份有限公司 | A kind of vehicle dormer window support PUR and preparation method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8461277B2 (en) * | 2009-04-06 | 2013-06-11 | Cray Valley Usa, Llc | Caustic removable hot melt adhesive formulations |
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2020
- 2020-11-18 CN CN202011295240.0A patent/CN112300732B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104640950A (en) * | 2012-07-16 | 2015-05-20 | 波士胶公司 | Polypropylene impact copolymer based hot melt adhesive |
| CN105111995A (en) * | 2015-09-28 | 2015-12-02 | 佛山南宝高盛高新材料有限公司 | Maleic anhydride grafted styrene block copolymer blended modified polyurethane hot melt adhesive and preparation method thereof |
| CN106497456A (en) * | 2016-09-22 | 2017-03-15 | 重庆中科力泰高分子材料股份有限公司 | A kind of vehicle dormer window support PUR and preparation method |
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| CN112300732A (en) | 2021-02-02 |
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