CN111548740A - UV curing material, preparation method thereof, pressure-sensitive adhesive and application - Google Patents
UV curing material, preparation method thereof, pressure-sensitive adhesive and application Download PDFInfo
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- CN111548740A CN111548740A CN202010516614.0A CN202010516614A CN111548740A CN 111548740 A CN111548740 A CN 111548740A CN 202010516614 A CN202010516614 A CN 202010516614A CN 111548740 A CN111548740 A CN 111548740A
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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
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
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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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
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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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
Abstract
The invention relates to the field of chemical industry, and particularly discloses a UV curing material and a preparation method, a pressure-sensitive adhesive and application thereof, wherein the UV curing material comprises the following raw materials: 2-ethylhexyl acrylate, hydroxyethyl acrylate, isobornyl acrylate, polystyrene foam, pretreated essential oil leftovers, a crosslinking agent and an initiator. The UV curing material prepared by the embodiment of the invention has excellent bonding performance, the provided preparation method is simple, the problem that the polystyrene foam plastics in the existing UV curing general plastic are directly discarded after being used to cause waste and environmental pollution is effectively solved by preparing the UV curing material by dissolving the polystyrene foam plastics by utilizing the leftovers of camphor tree production essential oil, and the prepared UV curing material can be used as a UV curing pressure-sensitive adhesive product and has the advantages of low price, good initial adhesion, long lasting adhesion, strong stripping force and good environmental protection.
Description
Technical Field
The invention relates to the field of chemical industry, in particular to a UV curing material, a preparation method thereof, a pressure-sensitive adhesive and application thereof.
Background
In recent years, with the development of science and technology, people pay more attention to environmental protection. Among them, UV curing (Ultraviolet curing) is different from heating curing, crosslinking agent curing, natural curing and other modes, and generally, UV curing is a process of curing substances from low molecules to high molecules by Ultraviolet irradiation, and is widely applied to the fields of plastic industry, electronic industry, lamp industry, automobile industry, handicraft industry and the like because of the advantages of curing speed, little pollution to the environment, low curing cost and the like.
At present, polystyrene foam is common UV curing general plastic, but polystyrene foam is generally disposable, so that the problem of generation of a large amount of waste is solved, waste is caused, and the environment is polluted. For example, there are many methods for disposing of waste plastics, such as landfill, incineration, and the like. However, because of the nature of plastics which cannot be naturally degraded, toxic gases are generated during combustion treatment, which makes recycling difficult and causes secondary pollution easily. Therefore, it is required to design a method for preparing a UV curable material by treating recycled waste polystyrene foam as a raw material, thereby effectively solving the problem of treatment of polystyrene foam.
Disclosure of Invention
An embodiment of the present invention is to provide a UV curable material, so as to solve the problems of waste and environmental pollution caused by directly discarding polystyrene foam after use in the existing UV curable general plastic proposed in the background art.
The embodiment of the invention is realized as follows:
the invention provides a UV curing material which comprises the following raw materials in parts by weight: 20-45 parts of 2-ethylhexyl acrylate, 20-40 parts of hydroxyethyl acrylate, 10-20 parts of isobornyl acrylate, 20-30 parts of polystyrene foam plastic, 2-10 parts of pretreated essential oil leftovers, 1-5 parts of cross-linking agent and 0.5-1.7 parts of initiator; wherein the pretreated essential oil leftovers are fractions extracted from the essential oil leftovers at the temperature of 120-140 ℃.
As a further scheme of the invention: the polystyrene foam is recycled waste polystyrene foam, and of course, the polystyrene foam can also be directly produced by using the existing polystyrene foam, and the polystyrene foam is not limited herein.
As a still further scheme of the invention: the pretreated essential oil leftovers are fractions at the temperature of 120-140 ℃ obtained by distilling and extracting the essential oil leftovers under the condition of not more than-0.95 MPa.
As a still further scheme of the invention: the UV curing material comprises the following raw materials in parts by weight: 30-40 parts of 2-ethylhexyl acrylate, 25-35 parts of hydroxyethyl acrylate, 12-18 parts of isobornyl acrylate, 20-30 parts of polystyrene foam plastic, 5-8 parts of pretreated essential oil leftovers, 2-4 parts of cross-linking agent and 0.5-1.0 part of initiator.
Preferably, the UV curing material comprises the following raw materials in parts by weight: 30 parts of 2-ethylhexyl acrylate, 30 parts of hydroxyethyl acrylate, 13 parts of isobornyl acrylate, 20 parts of polystyrene foam plastic, 5 parts of pretreated essential oil leftovers, 2 parts of cross-linking agent and 0.5 part of initiator.
As a still further scheme of the invention: the essential oil is a general term of volatile substance-containing products obtained by processing and extracting from perfume plants or perfume animals. Specifically, the essential oil can be single essential oil or compound essential oil selected from plant essential oil.
As a still further scheme of the invention: the essential oil can be any one of fir essential oil, birch essential oil, pine needle essential oil, rose essential oil, borneol essential oil, jasmine essential oil, lavender essential oil, chamomile essential oil, orange flower essential oil, sweet osmanthus essential oil, peony essential oil, bay essential oil, honeysuckle essential oil, tea tree essential oil, mint essential oil, spearmint essential oil, ginseng essential oil, garlic essential oil, rosemary essential oil, citronella essential oil, valerian essential oil, wormwood essential oil, rosewood essential oil, camphor essential oil, sassafras essential oil, frankincense essential oil, benzoin essential oil, cinnamon essential oil, lemon essential oil, almond essential oil, zanthoxylum essential oil and the like. It should be noted that the leftovers of the essential oil can be leftovers generated in the process of producing the corresponding essential oil, for example, the leftovers of the essential oil produced in the production of camphor trees, that is, the leftovers of the essential oil produced in the production of the essential oil of camphor trees.
As a still further scheme of the invention: the cross-linking agent is 1, 6-hexanediol diacrylate or propyl methacrylate.
As a still further scheme of the invention: the initiator is any one of 4-acryloyloxy acetophenone, 1-hydroxycyclohexyl phenyl ketone or hydroxy dimethyl acetophenone.
Another object of an embodiment of the present invention is to provide a method for preparing a UV curable material, including the following steps:
weighing the polystyrene foam plastics according to a proportion, adding the polystyrene foam plastics into the pretreated essential oil leftovers, adding 2-ethylhexyl acrylate, hydroxyethyl acrylate, isobornyl acrylate and part of a cross-linking agent according to the proportion, uniformly mixing, introducing a protective gas during the mixing process, adding part of an initiator after uniformly mixing, and performing ultraviolet irradiation reaction to obtain a prepolymer;
and adding the rest of the cross-linking agent and the initiator into the prepolymer, and uniformly mixing to obtain the UV curing material.
As a still further scheme of the invention: the ultraviolet irradiation reaction is completed when partial initiator is added after the uniform mixing for the ultraviolet irradiation reaction until the material viscosity is 900-1000cP (centipoise).
As a still further scheme of the invention: and adding the rest of the cross-linking agent and the initiator into the prepolymer for uniform mixing, wherein the uniform mixing is carried out by stirring for 5-15 minutes under the condition of 1000-2000 revolutions per minute.
Preferably, the residual cross-linking agent and the initiator are added into the prepolymer and are uniformly mixed, and the uniform mixing is performed for 10 minutes by stirring at the rotating speed of 1500 revolutions per minute.
As a still further scheme of the invention: and adding the rest of the cross-linking agent and the initiator into the prepolymer for uniform mixing, wherein the addition amount of the cross-linking agent and the initiator is respectively 0.05-0.15 time of the weight of the prepolymer and 0.1-0.2 time of the weight of the prepolymer.
Preferably, the residual cross-linking agent and the initiator are added into the prepolymer and uniformly mixed, and the addition amount of the cross-linking agent and the initiator is that 0.1phr of 1, 6-hexanediol diacrylate and 0.15phr of 4-acryloyloxy acetophenone are added into the prepolymer.
It should be noted that phr represents the weight parts of the corresponding additive added in each 100 weight parts (by mass), specifically, 0.1phr of 1, 6-hexanediol diacrylate represents that 1, 6-hexanediol diacrylate is added according to the proportion of 0.1 g of 1, 6-hexanediol diacrylate added in 100 g of prepolymer; 0.15phr of 4-acryloyloxyacetophenone means that 4-acryloyloxyacetophenone was added in a proportion such that 0.15 g of 4-acryloyloxyacetophenone was added to 100 g of the prepolymer.
As a still further scheme of the invention: the temperature of the prepolymer in the preparation process is controlled at room temperature.
As a still further scheme of the invention: the protective gas may be nitrogen, argon, helium, neon, or other existing products, and is specifically selected according to the requirements, and is not limited herein.
Another object of the embodiments of the present invention is to provide a UV curable material prepared by the above method for preparing a UV curable material.
It is another object of embodiments of the present invention to provide a pressure sensitive adhesive, which partially or completely contains the UV curable material.
It is a further object of embodiments of the present invention to provide a use of the above pressure sensitive adhesive in product packaging and/or upholstery.
As a still further scheme of the invention: in the application of the pressure-sensitive adhesive in product packaging and/or interior decoration, the pressure-sensitive adhesive can be used for packaging and decoration, and can also be used for preparing office supplies and various labels. Of course, the preparation method of the UV curing material and the pressure-sensitive adhesive can also be used for resource utilization of waste.
Compared with the prior art, the embodiment of the invention has the beneficial effects that:
the UV curing material prepared by the embodiment of the invention has excellent bonding performance, and can be used as a UV curing pressure-sensitive adhesive by adding 2-ethylhexyl acrylate, hydroxyethyl acrylate, isobornyl acrylate, polystyrene foam plastics, pretreated essential oil leftovers, a cross-linking agent, an initiator and the like. The invention also provides a preparation method of the UV curing material, the UV curing material is prepared by dissolving polystyrene foam plastics by utilizing camphor tree production essential oil leftovers, the problems of waste and environmental pollution caused by directly discarding the polystyrene foam plastics in the existing UV curing general plastic are effectively solved, and the prepared UV curing material can be used as a UV curing pressure sensitive adhesive product and has the advantages of low price, good initial adhesion, long lasting adhesion, strong stripping force and good environmental protection compared with the traditional UV curing pressure sensitive adhesive.
Detailed Description
The present invention will be described in further detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
In this embodiment, a preparation method of a UV-curable material is provided, and specifically, a method for preparing a UV-curable pressure-sensitive adhesive by using leftovers of camphor tree production essential oil is provided, where the preparation method of the UV-curable material includes the following steps:
adding 300mL of leftovers of essential oil production by taking camphor trees as raw materials into a 500mL flask, distilling under the condition of-0.95 MPa, extracting fractions at the temperature of 120-140 ℃ to obtain pretreated leftovers of essential oil, weighing 5 g of pretreated leftovers of essential oil, pouring into the 500mL beaker into which 20 g of polystyrene foam plastic is added, then adding 30 g of 2-ethylhexyl acrylate, 30 g of hydroxyethyl acrylate, 13 g of isobornyl acrylate and 2 g of 1, 6-hexanediol diacrylate, starting stirring and introducing nitrogen, adding 0.5 g of an initiator after uniform mixing, opening an ultraviolet lamp for reaction, stopping the reaction when the viscosity is measured to be 1000cP to obtain a prepolymer, and maintaining the whole reaction process at room temperature; then adding 0.1phr 1, 6-hexanediol diacrylate and 0.15phr initiator into the prepolymer for mixing (specifically, 0.1phr 1, 6-hexanediol diacrylate means that 0.1 g 1, 6-hexanediol diacrylate is added according to the proportion of adding 0.1 g 1, 6-hexanediol diacrylate into 100 g prepolymer; 0.15phr initiator means that 0.15 g initiator is added into 100 g prepolymer), stirring for 10 minutes under the condition of 1500 revolutions per minute, and obtaining the UV curing material, specifically the UV curing pressure sensitive adhesive; wherein the initiator is 4-acryloxyacetophenone.
Example 2
In this embodiment, a preparation method of a UV-curable material is provided, and specifically, a method for preparing a UV-curable pressure-sensitive adhesive by using leftovers of camphor tree production essential oil is provided, where the preparation method of the UV-curable material includes the following steps:
adding 300mL of leftovers of essential oil production by taking camphor trees as raw materials into a 500mL flask, distilling under the condition of-0.95 MPa, extracting 120-140 ℃ fractions to obtain pretreated leftovers of essential oil, weighing 8 g of pretreated leftovers of essential oil, pouring into a 500mL beaker into which 23 g of polystyrene foam plastic is added, then adding 30 g of 2-ethylhexyl acrylate, 30 g of hydroxyethyl acrylate, 13 g of isobornyl acrylate and 2 g of 1, 6-hexanediol diacrylate, starting stirring and introducing nitrogen, adding 0.5 g of initiator after uniform mixing, opening an ultraviolet lamp for reaction, stopping the reaction when the viscosity is measured to be 1000cP to obtain a prepolymer, and maintaining the whole reaction process at room temperature; then adding 0.1phr 1, 6-hexanediol diacrylate and 0.15phr initiator into the prepolymer for mixing (specifically, 0.1phr 1, 6-hexanediol diacrylate means that 0.1 g 1, 6-hexanediol diacrylate is added according to the proportion of adding 0.1 g 1, 6-hexanediol diacrylate into 100 g prepolymer; 0.15phr initiator means that 0.15 g initiator is added into 100 g prepolymer), stirring for 10 minutes under the condition of 1500 revolutions per minute, and obtaining the UV curing material, specifically the UV curing pressure sensitive adhesive; wherein the initiator is 1-hydroxycyclohexyl phenyl ketone.
Example 3
In this embodiment, a preparation method of a UV-curable material is provided, and specifically, a method for preparing a UV-curable pressure-sensitive adhesive by using leftovers of camphor tree production essential oil is provided, where the preparation method of the UV-curable material includes the following steps:
adding 300mL of leftovers of essential oil production by taking camphor trees as raw materials into a 500mL flask, distilling under the condition of-0.95 MPa, extracting 120-140 ℃ fractions to obtain pretreated leftovers of essential oil, weighing 10 g of pretreated leftovers of essential oil, pouring into a 500mL beaker into which 25 g of polystyrene foam plastic is added, then adding 30 g of 2-ethylhexyl acrylate, 30 g of hydroxyethyl acrylate, 13 g of isobornyl acrylate and 2 g of 1, 6-hexanediol diacrylate, starting stirring and introducing nitrogen, adding 0.5 g of initiator after uniform mixing, opening an ultraviolet lamp for reaction, stopping the reaction when the viscosity is measured to be 1000cP to obtain a prepolymer, and maintaining the whole reaction process at room temperature; then adding 0.1phr 1, 6-hexanediol diacrylate and 0.15phr initiator into the prepolymer for mixing (specifically, 0.1phr 1, 6-hexanediol diacrylate means that 0.1 g 1, 6-hexanediol diacrylate is added according to the proportion of adding 0.1 g 1, 6-hexanediol diacrylate into 100 g prepolymer; 0.15phr initiator means that 0.15 g initiator is added into 100 g prepolymer), stirring for 10 minutes under the condition of 1500 revolutions per minute, and obtaining the UV curing material, specifically the UV curing pressure sensitive adhesive; wherein the initiator is hydroxy dimethyl acetophenone.
Example 4
A UV curable material comprising the following raw materials: 20 g of 2-ethylhexyl acrylate, 20 g of hydroxyethyl acrylate, 10 g of isobornyl acrylate, 20 g of polystyrene foam plastic, 2 g of pretreated essential oil leftovers, 1 g of 1, 6-hexanediol diacrylate and 0.5 g of initiator; wherein, the pretreated leftovers of the essential oil are obtained by adding 300mL of leftovers of essential oil production by taking camphor trees as raw materials into a 500mL flask, distilling under the condition of-0.95 MPa and extracting fractions at 140 ℃; the initiator is hydroxy dimethyl acetophenone.
In this embodiment, a preparation method of the UV curing material is also provided, and specifically, a method for preparing a UV curing pressure sensitive adhesive by using leftovers of camphor tree production essential oil is provided, where the preparation method of the UV curing material includes the following steps:
weighing 2 g of pretreated essential oil leftovers, pouring the 2 g of pretreated essential oil leftovers into a 500mL beaker into which 20 g of polystyrene foam plastic is added, then adding 20 g of 2-ethylhexyl acrylate, 20 g of hydroxyethyl acrylate, 10 g of isobornyl acrylate and 0.9 g of 1, 6-hexanediol diacrylate, starting stirring and introducing nitrogen, after uniformly mixing, adding 0.35 g of an initiator, turning on an ultraviolet lamp for reaction, stopping the reaction when the viscosity is measured to be 1000cP, thus obtaining a prepolymer, and maintaining the whole reaction process at room temperature; and then 0.1 g of 1, 6-hexanediol diacrylate and 0.15 g of initiator are added into the prepolymer for mixing, and the mixture is stirred for 10 minutes under the condition of 1500 revolutions per minute, so that the UV curing material, in particular the UV curing pressure sensitive adhesive, can be obtained.
Example 5
Same as example 4 except that the 1, 6-hexanediol diacrylate was replaced with propyl methacrylate, compared to example 4.
Example 6
The same procedure as in example 4 was repeated, except that the pretreated residue of essential oil was obtained by adding 300mL of the residue from the production of essential oil from fir tree in a 500mL flask and distilling the residue under-0.95 MPa to extract a fraction at 140 ℃ C.
Example 7
Compared with example 4, the method is the same as example 4 except that 300mL of the leftover of the essential oil produced by taking jasmine as a raw material is added into a 500mL flask, and distillation is carried out under the condition of-0.98 MPa to extract a fraction at the temperature of 120 ℃ and 140 ℃.
Example 8
Compared with example 4, the method is the same as example 4 except that the pretreated essential oil leftovers are obtained by adding 300mL of leftovers of essential oil production by using almond as a raw material into a 500mL flask, distilling under the condition of-1.95 MPa and extracting a fraction at the temperature of 120 ℃ and 140 ℃.
Example 9
Compared with example 4, the method is the same as example 4 except that 300mL of leftovers of essential oil production by using ginseng as a raw material is added into a 500mL flask, and distillation is carried out under the condition of-1.25 MPa to extract a fraction at the temperature of 120 ℃ and 140 ℃.
Example 10
A UV curable material comprising the following raw materials: 20 g of 2-ethylhexyl acrylate, 20 g of hydroxyethyl acrylate, 10 g of isobornyl acrylate, 20 g of polystyrene foam plastic, 2 g of pretreated essential oil leftovers, 1 g of 1, 6-hexanediol diacrylate and 0.5 g of initiator; wherein, the pretreated leftovers of the essential oil are obtained by adding 300mL of leftovers of essential oil production by taking camphor trees as raw materials into a 500mL flask, distilling under the condition of-0.95 MPa and extracting fractions at 140 ℃; the initiator is 4-acryloxyacetophenone.
In this embodiment, a preparation method of the UV curing material is also provided, and specifically, a method for preparing a UV curing pressure sensitive adhesive by using leftovers of camphor tree production essential oil is provided, where the preparation method of the UV curing material includes the following steps:
weighing the pretreated essential oil leftovers according to the proportion, pouring the leftovers into a 500mL beaker with polystyrene foam plastics, adding 2-ethylhexyl acrylate, hydroxyethyl acrylate, isobornyl acrylate and 0.95 g of 1, 6-hexanediol diacrylate, starting stirring, introducing nitrogen, after uniformly mixing, adding 0.4 g of initiator, starting an ultraviolet lamp for reaction, stopping the reaction when the viscosity is 900cP, obtaining a prepolymer, and maintaining the whole reaction process at room temperature; and then mixing the prepolymer with 0.05 g of 1, 6-hexanediol diacrylate and 0.1 g of initiator, and stirring for 5 minutes at the speed of 1000 revolutions per minute to obtain the UV curing material, in particular to the UV curing pressure sensitive adhesive.
Example 11
A UV curable material comprising the following raw materials: 45 g of 2-ethylhexyl acrylate, 40 g of hydroxyethyl acrylate, 20 g of isobornyl acrylate, 30 g of polystyrene foam plastic, 10 g of pretreated essential oil leftovers, 5 g of 1, 6-hexanediol diacrylate and 1.7 g of an initiator; wherein, the pretreated leftovers of the essential oil are obtained by adding 300mL of leftovers of essential oil production by taking camphor trees as raw materials into a 500mL flask, distilling under the condition of-0.95 MPa and extracting fractions at 140 ℃; the initiator is 1-hydroxycyclohexyl phenyl ketone.
In this embodiment, a preparation method of the UV curing material is also provided, and specifically, a method for preparing a UV curing pressure sensitive adhesive by using leftovers of camphor tree production essential oil is provided, where the preparation method of the UV curing material includes the following steps:
weighing the pretreated essential oil leftovers according to the proportion, pouring the leftovers into a 500mL beaker with polystyrene foam plastics added, then adding 2-ethylhexyl acrylate, hydroxyethyl acrylate, isobornyl acrylate and 4.85 g of 1, 6-hexanediol diacrylate, starting stirring, introducing argon, after uniformly mixing, adding 1.5 g of initiator, turning on an ultraviolet lamp for reaction, stopping the reaction when the viscosity is measured to be 1000cP, obtaining a prepolymer, and maintaining the whole reaction process at room temperature; and then mixing the prepolymer with 0.15 g of 1, 6-hexanediol diacrylate and 0.2 g of initiator, and stirring for 15 minutes at 2000 rpm to obtain the UV curing material, in particular to the UV curing pressure sensitive adhesive.
Example 12
A UV curable material comprising the following raw materials: 30 g of 2-ethylhexyl acrylate, 30 g of hydroxyethyl acrylate, 13 g of isobornyl acrylate, 20 g of polystyrene foam plastic, 5 g of pretreated essential oil leftovers, 2 g of 1, 6-hexanediol diacrylate and 0.5 g of initiator; wherein, the pretreated leftovers of the essential oil are obtained by adding 300mL of leftovers of essential oil production by taking camphor trees as raw materials into a 500mL flask, distilling under the condition of-0.95 MPa and extracting fractions at 140 ℃; the initiator is 4-acryloxyacetophenone.
In this embodiment, a preparation method of the UV curing material is also provided, and specifically, a method for preparing a UV curing pressure sensitive adhesive by using leftovers of camphor tree production essential oil is provided, where the preparation method of the UV curing material includes the following steps:
weighing the pretreated essential oil leftovers according to the proportion, pouring the leftovers into a 500mL beaker with polystyrene foam plastics, adding 2-ethylhexyl acrylate, hydroxyethyl acrylate, isobornyl acrylate and 1.9 g of 1, 6-hexanediol diacrylate, starting stirring, introducing nitrogen, after uniformly mixing, adding 0.35 g of initiator, starting an ultraviolet lamp for reaction, stopping the reaction when the viscosity is 1000cP, obtaining a prepolymer, and maintaining the whole reaction process at room temperature; and then mixing the prepolymer with 0.1 g of 1, 6-hexanediol diacrylate and 0.15 g of initiator, and stirring for 10 minutes at 1500 rpm to obtain the UV curing material, in particular the UV curing pressure sensitive adhesive.
Example 13
A UV curable material comprising the following raw materials: 30 parts of 2-ethylhexyl acrylate, 25 parts of hydroxyethyl acrylate, 12 parts of isobornyl acrylate, 20 parts of polystyrene foam plastic, 5 parts of pretreated essential oil leftovers, 2 parts of 1, 6-hexanediol diacrylate and 0.5 part of initiator; wherein, the pretreated leftovers of the essential oil are obtained by adding 300mL of leftovers of essential oil production by taking camphor trees as raw materials into a 500mL flask, distilling under the condition of-0.95 MPa and extracting fractions at 140 ℃; the initiator is 4-acryloxyacetophenone.
In this embodiment, a preparation method of the UV curing material is also provided, and specifically, a method for preparing a UV curing pressure sensitive adhesive by using leftovers of camphor tree production essential oil is provided, where the preparation method of the UV curing material includes the following steps:
weighing the pretreated essential oil leftovers according to the proportion, pouring the leftovers into a 500mL beaker with polystyrene foam plastics, adding 2-ethylhexyl acrylate, hydroxyethyl acrylate, isobornyl acrylate and 1.9 g of 1, 6-hexanediol diacrylate, starting stirring, introducing helium, after uniformly mixing, adding 0.35 g of initiator, starting an ultraviolet lamp for reaction, stopping the reaction when the viscosity is 1000cP, obtaining a prepolymer, and maintaining the whole reaction process at room temperature; and then mixing the prepolymer with 0.1 g of 1, 6-hexanediol diacrylate and 0.15 g of initiator, and stirring for 10 minutes at 1500 rpm to obtain the UV curing material, in particular the UV curing pressure sensitive adhesive.
Example 14
A UV curable material comprising the following raw materials: 40 parts of 2-ethylhexyl acrylate, 35 parts of hydroxyethyl acrylate, 18 parts of isobornyl acrylate, 30 parts of polystyrene foam plastic, 8 parts of pretreated essential oil leftovers, 4 parts of 1, 6-hexanediol diacrylate and 1.0 part of initiator; wherein, the pretreated leftovers of the essential oil are obtained by adding 300mL of leftovers of essential oil production by taking camphor trees as raw materials into a 500mL flask, distilling under the condition of-0.95 MPa and extracting fractions at 140 ℃; the initiator is 4-acryloxyacetophenone.
In this embodiment, a preparation method of the UV curing material is also provided, and specifically, a method for preparing a UV curing pressure sensitive adhesive by using leftovers of camphor tree production essential oil is provided, where the preparation method of the UV curing material includes the following steps:
weighing the pretreated essential oil leftovers according to the proportion, pouring the leftovers into a 500mL beaker with polystyrene foam plastics added, then adding 2-ethylhexyl acrylate, hydroxyethyl acrylate, isobornyl acrylate and 3.9 g of 1, 6-hexanediol diacrylate, starting stirring, introducing neon, after uniformly mixing, adding 0.85 g of initiator, turning on an ultraviolet lamp for reaction, stopping the reaction when the viscosity is measured to be 1000cP, obtaining a prepolymer, and maintaining the whole reaction process at room temperature; and then mixing the prepolymer with 0.1 g of 1, 6-hexanediol diacrylate and 0.15 g of initiator, and stirring for 10 minutes at 1500 rpm to obtain the UV curing material, in particular the UV curing pressure sensitive adhesive.
The UV curing material prepared by the method has excellent adhesive property, and can be used as a UV curing pressure-sensitive adhesive by adding 2-ethylhexyl acrylate, hydroxyethyl acrylate, isobornyl acrylate, polystyrene foam plastic, pretreated essential oil leftovers, a cross-linking agent, an initiator and the like. The invention also provides a preparation method of the UV curing material, the UV curing material is prepared by dissolving the polystyrene foam plastic by utilizing the leftovers of camphor tree essential oil production to solve the problems of waste and environmental pollution caused by directly discarding the polystyrene foam plastic in the existing UV curing general plastic, the prepared UV curing material can be used as a UV curing pressure sensitive adhesive product, and has the advantages of good initial adhesion, long lasting adhesion, strong stripping force, good environmental protection and wide market prospect.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (10)
1. The UV curing material is characterized by comprising the following raw materials in parts by weight: 20-45 parts of 2-ethylhexyl acrylate, 20-40 parts of hydroxyethyl acrylate, 10-20 parts of isobornyl acrylate, 20-30 parts of polystyrene foam plastic, 2-10 parts of pretreated essential oil leftovers, 1-5 parts of cross-linking agent and 0.5-1.7 parts of initiator; wherein the pretreated essential oil leftovers are fractions extracted from the essential oil leftovers at the temperature of 120-140 ℃.
2. The UV curable material as claimed in claim 1, wherein the pretreated essential oil residue is a fraction at 120-140 ℃ obtained by distilling and extracting the essential oil residue under the condition of not more than-0.95 MPa.
3. The UV-curable material according to claim 1, wherein the UV-curable material comprises the following raw materials in parts by weight: 30-40 parts of 2-ethylhexyl acrylate, 25-35 parts of hydroxyethyl acrylate, 12-18 parts of isobornyl acrylate, 20-30 parts of polystyrene foam plastic, 5-8 parts of pretreated essential oil leftovers, 2-4 parts of cross-linking agent and 0.5-1.0 part of initiator.
4. The UV-curable material according to claim 1, wherein the crosslinking agent is 1, 6-hexanediol diacrylate or propyl methacrylate; the initiator is any one of 4-acryloyloxy acetophenone, 1-hydroxycyclohexyl phenyl ketone or hydroxy dimethyl acetophenone.
5. A method for preparing the UV curable material according to any one of claims 1 to 4, comprising the steps of:
weighing the polystyrene foam plastics according to a proportion, adding the polystyrene foam plastics into the pretreated essential oil leftovers, adding 2-ethylhexyl acrylate, hydroxyethyl acrylate, isobornyl acrylate and part of a cross-linking agent according to the proportion, uniformly mixing, introducing a protective gas during the mixing process, adding part of an initiator after uniformly mixing, and performing ultraviolet irradiation reaction to obtain a prepolymer;
and adding the rest of the cross-linking agent and the initiator into the prepolymer, and uniformly mixing to obtain the UV curing material.
6. The method for preparing UV curable material according to claim 5, wherein the UV irradiation reaction is terminated when a portion of initiator is added to perform UV irradiation reaction after uniform mixing until the material viscosity is 900-1000 cP.
7. The method for preparing the UV curable material according to claim 5, wherein the amount of the cross-linking agent added is 0.05 to 0.15 times of the weight of the prepolymer, and the amount of the initiator added is 0.1 to 0.2 times of the weight of the prepolymer, in the step of adding the rest of the cross-linking agent and the initiator to the prepolymer and uniformly mixing.
8. A UV-curable material produced by the method for producing a UV-curable material according to any one of claims 5 to 7.
9. A pressure-sensitive adhesive comprising partially or totally the UV-curable material according to claim 1 or 2 or 3 or 4 or 8.
10. Use of a pressure sensitive adhesive as claimed in claim 9 in product packaging and/or upholstery.
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