CN114716947B - Polyolefin hot melt adhesive for CPL coating and preparation method thereof - Google Patents
Polyolefin hot melt adhesive for CPL coating and preparation method thereof Download PDFInfo
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- CN114716947B CN114716947B CN202110885570.3A CN202110885570A CN114716947B CN 114716947 B CN114716947 B CN 114716947B CN 202110885570 A CN202110885570 A CN 202110885570A CN 114716947 B CN114716947 B CN 114716947B
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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
- C09J11/08—Macromolecular additives
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The application relates to the technical field of CPL coating, in particular to a polyolefin hot melt adhesive for CPL coating and a preparation method thereof. The preparation raw materials comprise 50 to 60 parts of amorphous alpha-olefin copolymer, 5 to 10 parts of polypropylene wax, 20 to 40 parts of tackifying resin, 5 to 10 parts of polypropylene and 0.1 to 1 part of other auxiliary agents. According to the application, through regulating and controlling the polyolefin hot-melt collagen material components and the proportion for CPL coating, the coating strength of the hot-melt adhesive on MDF and other materials is obviously improved, and through adopting the compounded tackifying resin, the amorphous alpha-olefin copolymer with specific physicochemical parameters, the polypropylene and the polypropylene wax components and utilizing the synergistic effect therebetween, the effective synergistic effect is realized, so that the stability of a coating sample adopting the very light hot-melt adhesive in an ultralow temperature environment of-20 ℃ is obviously improved, and the unstable phenomena such as warping and the like which possibly occur in winter environment are effectively avoided.
Description
Technical Field
The application relates to the technical field of CPL coating, in particular to a polyolefin hot melt adhesive for CPL coating and a preparation method thereof.
Background
CPL material is a melamine continuous laminated facing material, is a high-grade decorative material free of paint in China at present, and is popular with consumers due to the characteristics of wear resistance, scratch resistance, acid and alkali resistance, vivid patterns, ageing resistance, fireproof performance, green environmental protection and the like. With the improvement of aesthetic views, no seam of decorative paper is required on the surfaces of furniture parts such as cabinet door edges and the like, so that seamless coating is realized. In the process of coating MDF (medium density fiberboard) by CPL material, strong initial bonding strength is required for profile coating, and the profile cannot be tilted after coating off-line, so that the conventional adhesive products for CLP cannot well meet the requirements. In addition, the coated product has a problem of cracking, warping and the like due to the performance degradation under a lower temperature or higher temperature environment, so that the problem needs to be solved.
Disclosure of Invention
In order to solve the technical problems, the first aspect of the application provides a CPL coated polyolefin hot melt adhesive, which is prepared from 50-60 parts of amorphous alpha-olefin copolymer, 5-10 parts of polypropylene wax, 20-40 parts of tackifying resin, 5-10 parts of polypropylene and 0.1-1 part of other auxiliary agents.
As a preferred embodiment of the present application, the amorphous alpha-olefin copolymer has a glass transition temperature of not higher than-27 ℃.
As a preferable technical scheme of the application, the viscosity of the amorphous alpha-olefin copolymer at 190 ℃ is 1.0-4.0 ten thousand mPa.s.
As a preferred embodiment of the present application, the tackifying resin includes a hydrogenated carbon nine resin and a terpene resin.
As a preferable technical scheme of the application, the weight ratio of the hydrogenated carbon nine resin to the terpene resin is (3-5): 1.
as a preferable technical scheme of the application, the softening point of the hydrogenated carbon nine resin is 120-130 ℃.
As a preferable technical scheme of the application, the melt index of the polypropylene is not lower than 120g/10min.
As a preferable technical scheme of the application, the viscosity of the polypropylene wax at 170 ℃ is 800-1400 mPa.s.
As a preferred embodiment of the present application, the other auxiliary agent includes an antioxidant.
The second aspect of the present application provides a method for preparing the polyolefin hot melt adhesive for CPL coating as described above, comprising the steps of:
adding polypropylene wax, tackifying resin and other auxiliary agents into a reaction kettle, stirring, heating to 170-180 ℃, adding amorphous alpha-olefin copolymer and polypropylene, controlling the temperature to 170-180 ℃, stirring and melting for 30-45 minutes, vacuumizing and stirring for 30-45 minutes, and discharging to obtain the modified polypropylene.
The beneficial effects are that: according to the application, through regulating and controlling the polyolefin hot-melt collagen material components and the proportion for CPL coating, the coating strength of the hot-melt adhesive on MDF and other materials is obviously improved, and through adopting the compounded tackifying resin, the amorphous alpha-olefin copolymer with specific physicochemical parameters, the polypropylene and the polypropylene wax components and utilizing the synergistic effect therebetween, the effective synergistic effect is realized, so that the stability of a coating sample adopting the very light hot-melt adhesive in an ultralow temperature environment of-20 ℃ is obviously improved, and the unstable phenomena such as warping and the like which possibly occur in winter environment are effectively avoided. Meanwhile, through the synergistic effect among the components, the cohesive strength of the microstructure of the hot melt adhesive after sizing is improved, the sensitivity and the responsiveness of a polymer chain segment to high-temperature stimulation are weakened, and the phenomenon of unstable warping at the high temperature of 80 ℃ is avoided, so that the comprehensive performance and the service life of the hot melt adhesive are influenced.
Detailed Description
The disclosure of the present application will be further understood in conjunction with the following detailed description of the preferred embodiments of the application, including examples. Wherein the softening point of the feedstock may be tested according to standard ASTM D3104 and the melt index of the present application may be tested according to the standard on ASTM 1238.
The first aspect of the application provides a CPL coated polyolefin hot melt adhesive, which is prepared from 50-60 parts of amorphous alpha-olefin copolymer, 5-10 parts of polypropylene wax, 20-40 parts of tackifying resin, 5-10 parts of polypropylene and 0.1-1 part of other auxiliary agents.
The amorphous alpha-olefin copolymer (APAO) is a flexible olefin copolymer with low molecular weight, high fluidity, amorphous state and high randomness, which is obtained by taking alpha-olefin as a raw material and polymerizing. Since the microstructure is an amorphous, random arrangement, the material has many properties not possessed by crystalline polymers.
In some preferred embodiments, the amorphous α -olefin copolymer has a glass transition temperature of no greater than-27 degrees celsius; further, the glass transition temperature of the amorphous alpha-olefin copolymer is-33 to-37 ℃. The glass transition temperature described in the present application can be obtained by DSC test.
Further preferably, the amorphous alpha-olefin copolymer has a viscosity of 1.0 to 4.0 ten thousand mpa.s at 190 ℃; further, the amorphous alpha-olefin copolymer has a viscosity of 1.8 to 3.2 thousand mpa.s at 190 ℃. The viscosity according to the application is a melt viscosity, which can be obtained by tests in accordance with DIN 53019.
The APAO described in the present application can be purchased from the market, for example, APAO 828, APAO 888, APAO 750, etc. of winning chemistry can be selected; APAO 828 is preferably used.
The polypropylene wax is a polyolefin synthetic wax, and various polypropylene waxes well known to those skilled in the art can be selected.
In some preferred embodiments, the polypropylene wax has a viscosity of 800 to 1400mpa.s at 170 degrees celsius. It can be tested at 170 degrees celsius by QM-AA-158 standard.
Further preferably, the polypropylene wax has an acid value of 39 to 46mgKOH/g. It can be tested by the QM-AA-351a standard.
The polypropylene wax of the present application is commercially available, for example, craine polypropylene wax MA7452.
The tackifying resin described in the present application is a component mainly used for adjusting the viscosity of the system. In some preferred embodiments, the tackifying resin comprises a hydrogenated carbon nine resin and a terpene resin.
Further preferably, the weight ratio of the hydrogenated carbon nine resin to the terpene resin is (3 to 5): 1, a step of; further, the weight ratio of the hydrogenated carbon nine resin to the terpene resin is 4:1.
further preferably, the softening point of the hydrogenated carbon nine resin is 120-130 ℃; preferably, the softening point is 125.+ -. 3 ℃.
Further preferably, the softening point of the terpene resin is 110-120 ℃; preferably, the softening point is 115.+ -. 3 ℃.
The hydrogenated carbon nine resin of the present application may be commercially available, for example, R1125 hydrogenated carbon nine resin from eastman chemistry; the terpene resins of the present application are also commercially available, such as TRB115, of the United states Korea.
In some preferred embodiments, the polypropylene has a melt index of not less than 120g/10min; further preferably, the polypropylene has a melt index of not less than 140g/10min; further preferably, the polypropylene has a melt index of not more than 180g/10min; further preferably, the polypropylene has a melt index of 145-155 g/10min; further preferably, the polypropylene has a melt index of 150g/10min (test conditions of 190 degrees celsius and a load of 2.16 kg). PP353 from Tosoh chemical may be used.
The specific choice of the other auxiliary agents is not particularly limited in the application, and various auxiliary agents known in the art can be selected on the premise of not affecting the comprehensive performance of the hot melt adhesive, including but not limited to antioxidants, stabilizers, ultraviolet absorbers and the like.
In some preferred embodiments, the other adjunct includes an antioxidant.
Further preferably, the antioxidant is a mixture of antioxidant 1010 and antioxidant 168; further preferably, the weight ratio of the antioxidant 1010 to the antioxidant 168 is 1:1. The antioxidant can be a product on the market, such as a corresponding antioxidant in Beijing.
According to the application, through regulating and controlling the polyolefin hot-melt collagen material components and the proportion for CPL coating, the coating strength of the hot-melt adhesive on MDF and other materials is obviously improved, and through adopting the compounded tackifying resin, the amorphous alpha-olefin copolymer with specific physicochemical parameters, the polypropylene and the polypropylene wax components and utilizing the synergistic effect therebetween, the effective synergistic effect is realized, so that the stability of a coating sample adopting the very light hot-melt adhesive in an ultralow temperature environment of-20 ℃ is obviously improved, and the unstable phenomena such as warping and the like which possibly occur in winter environment are effectively avoided. Meanwhile, through the synergistic effect among the components, the cohesive strength of the microstructure of the hot melt adhesive after sizing is improved, the sensitivity and the responsiveness of a polymer chain segment to high-temperature stimulation are weakened, and the phenomenon of unstable warping at the high temperature of 80 ℃ is avoided, so that the comprehensive performance and the service life of the hot melt adhesive are influenced.
The second aspect of the present application provides a method for preparing the polyolefin hot melt adhesive for CPL coating as described above, comprising the steps of:
adding polypropylene wax, tackifying resin and other auxiliary agents into a reaction kettle, stirring, heating to 170-180 ℃, adding amorphous alpha-olefin copolymer and polypropylene, controlling the temperature to 170-180 ℃, stirring and melting for 30-45 minutes, vacuumizing and stirring for 30-45 minutes, and discharging to obtain the modified polypropylene.
Example 1: the embodiment provides a CPL coating polyolefin hot melt adhesive, which is prepared from the following raw materials of 55 parts of amorphous alpha-olefin copolymer, 8 parts of polypropylene wax, 30 parts of tackifying resin, 8.5 parts of polypropylene and 0.6 part of other auxiliary agents.
The viscosity of the amorphous alpha-olefin copolymer at 190 ℃ is 1.8-3.2 ten thousand mPa.s, the glass transition temperature is-35 ℃, and APAO 828 of winning chemistry is adopted; the acid value of the polypropylene wax is 39-46 mgKOH/g, the viscosity at 170 ℃ is 800-1400 mPa.s, and Craine polypropylene wax MA7452 is adopted; the tackifying resin comprises hydrogenated carbon nine resin and terpene resin, and the weight ratio of the tackifying resin is 4:1, the softening point of the hydrogenated carbon nine resin is 125+/-3 ℃, R1125 hydrogenated carbon nine resin of Isman chemistry is adopted, the softening point of the terpene resin is 115+/-3 ℃, and TRB115 of America Kort is adopted; the melt index of the polypropylene is 150g/10min, and PP353 of Tosoh chemistry is adopted; the other auxiliary agents are antioxidants, wherein the antioxidants are a mixture of an antioxidant 1010 and an antioxidant 168, and the weight ratio of the antioxidants is 1:1.
The preparation method of the CPL coating polyolefin hot melt adhesive comprises the following steps:
adding polypropylene wax, tackifying resin and other auxiliary agents into a reaction kettle, stirring, heating to 175 ℃, adding amorphous alpha-olefin copolymer and polypropylene, controlling the temperature at 175 ℃, stirring and melting for 40 minutes, vacuumizing and stirring for 40 minutes, and discharging to obtain the modified polypropylene.
Example 2: the embodiment provides a CPL coating polyolefin hot melt adhesive, which is prepared from the following raw materials of 55 parts of amorphous alpha-olefin copolymer, 8 parts of polypropylene wax, 30 parts of tackifying resin, 8.5 parts of polypropylene and 0.6 part of other auxiliary agents.
The viscosity of the amorphous alpha-olefin copolymer at 190 ℃ is 1.8-3.2 ten thousand mPa.s, the glass transition temperature is-35 ℃, and APAO 828 of winning chemistry is adopted; the acid value of the polypropylene wax is 39-46 mgKOH/g, the viscosity at 170 ℃ is 800-1400 mPa.s, and Craine polypropylene wax MA7452 is adopted; the tackifying resin is hydrogenated carbon nine resin, the softening point of the hydrogenated carbon nine resin is 125+/-3 ℃, and R1125 hydrogenated carbon nine resin of Isman chemistry is adopted; the melt index of the polypropylene is 150g/10min, and PP353 of Tosoh chemistry is adopted; the other auxiliary agents are antioxidants, wherein the antioxidants are a mixture of an antioxidant 1010 and an antioxidant 168, and the weight ratio of the antioxidants is 1:1.
The preparation method of the CPL coating polyolefin hot melt adhesive comprises the following steps:
adding polypropylene wax, tackifying resin and other auxiliary agents into a reaction kettle, stirring, heating to 175 ℃, adding amorphous alpha-olefin copolymer and polypropylene, controlling the temperature at 175 ℃, stirring and melting for 40 minutes, vacuumizing and stirring for 40 minutes, and discharging to obtain the modified polypropylene.
Example 3: the embodiment provides a CPL coating polyolefin hot melt adhesive, which is prepared from the following raw materials of 55 parts of amorphous alpha-olefin copolymer, 8 parts of polypropylene wax, 30 parts of tackifying resin, 8.5 parts of polypropylene and 0.6 part of other auxiliary agents.
The viscosity of the amorphous alpha-olefin copolymer at 190 ℃ is 1.8-3.2 ten thousand mPa.s, the glass transition temperature is-35 ℃, and APAO 828 of winning chemistry is adopted; the acid value of the polypropylene wax is 39-46 mgKOH/g, the viscosity at 170 ℃ is 800-1400 mPa.s, and Craine polypropylene wax MA7452 is adopted; the tackifying resin is terpene resin, the softening point of the terpene resin is 115+/-3 ℃, and TRB115 of Korea is adopted; the melt index of the polypropylene is 150g/10min, and PP353 of Tosoh chemistry is adopted; the other auxiliary agents are antioxidants, wherein the antioxidants are a mixture of an antioxidant 1010 and an antioxidant 168, and the weight ratio of the antioxidants is 1:1.
The preparation method of the CPL coating polyolefin hot melt adhesive comprises the following steps:
adding polypropylene wax, tackifying resin and other auxiliary agents into a reaction kettle, stirring, heating to 175 ℃, adding amorphous alpha-olefin copolymer and polypropylene, controlling the temperature at 175 ℃, stirring and melting for 40 minutes, vacuumizing and stirring for 40 minutes, and discharging to obtain the modified polypropylene.
Example 4: this example provides a CPL-coated polyolefin hot melt adhesive, which is prepared from amorphous alpha-olefin copolymer 55 parts,4 parts of polypropylene wax, 30 parts of tackifying resin, 8.5 parts of polypropylene and 0.6 part of other auxiliary agents.
The viscosity of the amorphous alpha-olefin copolymer at 190 ℃ is 1.8-3.2 ten thousand mPa.s, the glass transition temperature is-35 ℃, and APAO 828 of winning chemistry is adopted; the viscosity average molecular weight of the polypropylene wax is 7000-9000, and the polypropylene wax is a product of Qingdao Sauno chemical industry Co., ltd; the tackifying resin comprises hydrogenated carbon nine resin and terpene resin, and the weight ratio of the tackifying resin is 4:1, the softening point of the hydrogenated carbon nine resin is 125+/-3 ℃, R1125 hydrogenated carbon nine resin of Isman chemistry is adopted, the softening point of the terpene resin is 115+/-3 ℃, and TRB115 of America Kort is adopted; the melt index of the polypropylene is 150g/10min, and PP353 of Tosoh chemistry is adopted; the other auxiliary agents are antioxidants, wherein the antioxidants are a mixture of an antioxidant 1010 and an antioxidant 168, and the weight ratio of the antioxidants is 1:1.
The preparation method of the CPL coating polyolefin hot melt adhesive comprises the following steps:
adding polypropylene wax, tackifying resin and other auxiliary agents into a reaction kettle, stirring, heating to 175 ℃, adding amorphous alpha-olefin copolymer and polypropylene, controlling the temperature at 175 ℃, stirring and melting for 40 minutes, vacuumizing and stirring for 40 minutes, and discharging to obtain the modified polypropylene.
Example 5: the embodiment provides a CPL coating polyolefin hot melt adhesive, which is prepared from the following raw materials of 55 parts of amorphous alpha-olefin copolymer, 8 parts of polypropylene wax, 30 parts of tackifying resin, 8.5 parts of polypropylene and 0.6 part of other auxiliary agents.
The viscosity of the amorphous alpha-olefin copolymer at 190 ℃ is 1.8-3.2 ten thousand mPa.s, the glass transition temperature is-35 ℃, and APAO 828 of winning chemistry is adopted; the acid value of the polypropylene wax is 39-46 mgKOH/g, the viscosity at 170 ℃ is 800-1400 mPa.s, and Craine polypropylene wax MA7452 is adopted; the tackifying resin comprises hydrogenated carbon nine resin and terpene resin, and the weight ratio of the tackifying resin is 4:1, the softening point of the hydrogenated carbon nine resin is 125+/-3 ℃, R1125 hydrogenated carbon nine resin of Isman chemistry is adopted, the softening point of the terpene resin is 115+/-3 ℃, and TRB115 of America Kort is adopted; the melt index of the polypropylene is 36g/10min, and a PP3155E5 product of Exxon Mobil is adopted; the other auxiliary agents are antioxidants, wherein the antioxidants are a mixture of an antioxidant 1010 and an antioxidant 168, and the weight ratio of the antioxidants is 1:1.
The preparation method of the CPL coating polyolefin hot melt adhesive comprises the following steps:
adding polypropylene wax, tackifying resin and other auxiliary agents into a reaction kettle, stirring, heating to 175 ℃, adding amorphous alpha-olefin copolymer and polypropylene, controlling the temperature at 175 ℃, stirring and melting for 40 minutes, vacuumizing and stirring for 40 minutes, and discharging to obtain the modified polypropylene.
Example 6: the embodiment provides a CPL coating polyolefin hot melt adhesive, which is prepared from 55 parts of amorphous alpha-olefin copolymer, 8 parts of polypropylene wax, 30 parts of tackifying resin and 0.6 part of other auxiliary agents.
The viscosity of the amorphous alpha-olefin copolymer at 190 ℃ is 1.8-3.2 ten thousand mPa.s, the glass transition temperature is-35 ℃, and APAO 828 of winning chemistry is adopted; the acid value of the polypropylene wax is 39-46 mgKOH/g, the viscosity at 170 ℃ is 800-1400 mPa.s, and Craine polypropylene wax MA7452 is adopted; the tackifying resin comprises hydrogenated carbon nine resin and terpene resin, and the weight ratio of the tackifying resin is 4:1, the softening point of the hydrogenated carbon nine resin is 125+/-3 ℃, R1125 hydrogenated carbon nine resin of Isman chemistry is adopted, the softening point of the terpene resin is 115+/-3 ℃, and TRB115 of America Kort is adopted; the other auxiliary agents are antioxidants, wherein the antioxidants are a mixture of an antioxidant 1010 and an antioxidant 168, and the weight ratio of the antioxidants is 1:1.
The preparation method of the CPL coating polyolefin hot melt adhesive comprises the following steps:
and (3) adding the polypropylene wax, the tackifying resin and other auxiliary agents into a reaction kettle, stirring, heating to 175 ℃, adding the amorphous alpha-olefin copolymer, controlling the temperature to 175 ℃, stirring and melting for 40 minutes, vacuumizing and stirring for 40 minutes, and discharging to obtain the modified polypropylene.
Performance testing
Initial Strength test: taking the coating in the above embodimentThe sample piece, the utility knife cuts an area of about 10mm by 50mm, tears CPL by hand, observes whether there is density board bits or CPL breaks in tearing process on it, carries out 1 ~ 3 grades according to how many bits are, and the severity of the fracture condition in tearing process, and wherein 1 grade represents initial strength the highest, and 3 grades represent initial strength the weakest, and its test result is see table 1 below.
Low temperature stability: the above samples are placed in a sample box at the temperature of minus 20 ℃ and are stored for 24 hours, whether the coated samples are tilted or not is observed, the severity of tilting is classified into 1-4 grades according to whether tilting exists, wherein 1 grade represents no tilting, 2-4 grades represent tilting, 4 grades represent serious tilting, 3 grades and 2 grades are not serious in sequence, and the test results are shown in the following table 1.
High temperature stability: the above samples were placed in a sample box at 80 ℃ and stored for 24 hours, and then, whether the coated samples were tilted was observed, and the severity of the tilting was classified into 1 to 4 levels according to whether the tilting was present, wherein 1 level represents no tilting, 2 to 4 levels represent tilting, 4 levels represent severe tilting, and 3 levels and 2 levels of tilting were not serious in order, and the test results are shown in the following table 1.
TABLE 1
| Initial strength | Low temperature stability | High temperature stability | |
| Example 1 | Level 1 | Level 1 | Level 1 |
| Example 2 | Level 1 | 3 grade | Level 2 |
| Example 3 | Level 1 | Level 2 | 3 grade |
| Example 4 | Level 2 | Level 2 | Level 2 |
| Example 5 | Level 1 | Level 1 | Level 2 |
| Example 6 | Level 2 | Level 2 | 3 grade |
From the experimental results, the CPL coating polyolefin hot melt adhesive has excellent comprehensive performance and excellent initial strength, and the coated product has good stability in ultralow temperature or high temperature environment up to 80 ℃, so that the problems of warping and the like can not occur in the use process.
The above description is only of the preferred embodiments of the present application, and is not intended to limit the present application in any way; those skilled in the art will appreciate that many modifications, adaptations, and variations of the present application are possible in light of the above teachings without departing from the scope of the application.
Claims (7)
1. The CPL coated polyolefin hot melt adhesive is characterized in that the preparation raw materials comprise 50-60 parts of amorphous alpha-olefin copolymer, 5-10 parts of polypropylene wax, 20-40 parts of tackifying resin, 5-10 parts of polypropylene and 0.1-1 part of other auxiliary agents; the tackifying resin comprises hydrogenated carbon nine resin and terpene resin; the weight ratio of the hydrogenated carbon nine resin to the terpene resin is (3-5): 1, a step of; the viscosity of the polypropylene wax at 170 ℃ is 800-1400 Pa.s.
2. The CPL-coated polyolefin hot melt adhesive according to claim 1, wherein the amorphous α -olefin copolymer has a glass transition temperature of not more than-27 degrees celsius.
3. The CPL-coated polyolefin hot melt adhesive according to claim 2, wherein the amorphous α -olefin copolymer has a viscosity of 1.0 to 4.0 mpa.s at 190 ℃.
4. The CPL-coating polyolefin hot melt adhesive according to claim 1, wherein the hydrogenated carbon nine resin has a softening point of 120 to 130 ℃.
5. The CPL-coated polyolefin hot melt adhesive according to claim 1, wherein the polypropylene has a melt index of not less than 120g/10min.
6. The CPL-coating polyolefin hot melt adhesive according to claim 5, wherein said other auxiliary agent comprises an antioxidant.
7. The method for producing a CPL-coated polyolefin hot melt adhesive according to any one of claims 1 to 6, comprising the steps of:
adding polypropylene wax, tackifying resin and other auxiliary agents into a reaction kettle, stirring, heating to 170-180 ℃, adding amorphous alpha-olefin copolymer and polypropylene, controlling the temperature to 170-180 ℃, stirring and melting for 30-45 minutes, vacuumizing and stirring for 30-45 minutes, and discharging to obtain the modified polypropylene.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004284575A (en) * | 2003-03-06 | 2004-10-14 | Hitachi Kasei Polymer Co Ltd | Precoated surface material for vehicular interior material and manufacturing method of vehicular interior material |
| CN110540818A (en) * | 2019-09-18 | 2019-12-06 | 杭州之江新材料有限公司 | Non-reactive polyolefin hot melt adhesive, preparation method and application thereof |
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| US6653385B2 (en) * | 2001-10-18 | 2003-11-25 | Bostik Findley, Inc. | Hot melt adhesive composition based on a blend of amorphous poly-α-olefin and syndiotactic polypropylene |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004284575A (en) * | 2003-03-06 | 2004-10-14 | Hitachi Kasei Polymer Co Ltd | Precoated surface material for vehicular interior material and manufacturing method of vehicular interior material |
| CN110540818A (en) * | 2019-09-18 | 2019-12-06 | 杭州之江新材料有限公司 | Non-reactive polyolefin hot melt adhesive, preparation method and application thereof |
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