CN110903602A - Preparation and production method of gold foil transparent epoxy resin - Google Patents
Preparation and production method of gold foil transparent epoxy resin Download PDFInfo
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- CN110903602A CN110903602A CN201911171821.0A CN201911171821A CN110903602A CN 110903602 A CN110903602 A CN 110903602A CN 201911171821 A CN201911171821 A CN 201911171821A CN 110903602 A CN110903602 A CN 110903602A
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- epoxy resin
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- transparent epoxy
- curing agent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0831—Gold
Abstract
The invention discloses a preparation and production method of gold foil transparent epoxy resin, which comprises the following steps: taking gold foil powder, a curing agent and high-transparency epoxy resin which correspond to the weight components; after setting working parameters of normal-pressure stirring equipment, gradually adding epoxy resin liquid and a curing agent, and then adding gold foil powder until mixing is completed, wherein the working speed of the normal-pressure stirring equipment is 85-2500rpm, heating while stirring, and the working temperature is 60-100 ℃; and (4) discharging after the materials are mixed, filling and forming to finish the preparation. According to the invention, through adjusting the thermal deformation temperature of the hole, the polymerization reaction can be carried out under the auxiliary action of normal pressure stirring equipment when the polymerization reaction enters the gelation stage and even the physical property of the high polymer solid material is presented, so that the residue of active groups is avoided, the curing reaction is difficult to occur when the finished product is exposed under the conditions of heat, light, moisture and the like, and the transparency of the epoxy resin finished product and the attractiveness of the gold foil in the transparent epoxy resin are ensured.
Description
Technical Field
The invention relates to the technical field of epoxy resin preparation, in particular to a preparation and production method of gold foil transparent epoxy resin.
Background
The curing reaction principle of epoxy resins is currently still imperfect, but it is generally considered to react into a thermosetting product in four ways depending on the curing agent used: the epoxy groups are connected by ring opening, the epoxy groups are reacted with a curing agent with active hydrogen functional groups for crosslinking, the epoxy groups are reacted with aromatic or aliphatic hydroxyl groups in the curing agent for crosslinking, and the epoxy groups or the hydroxyl groups are reacted with groups carried by the curing agent for crosslinking. After the curing reaction, a product with a three-dimensional network structure is generated, so that the epoxy material has excellent performance and has real use value.
The transparent gold foil ornament is made of gold foil with certain fineness suspended homogeneously in epoxy resin of high light refractive index material and through machining and forming.
At present, the industrial application and the production ratio are the predominant or the bisphenol A type epoxy resin, the larger the molecular weight of the bisphenol A type epoxy resin is, the more the dispersion is, the more the function of hydroxyl group in the epoxy resin is obvious, the curing reaction is ionic, the curing reaction is exothermic, and the reaction speed is accelerated along with the increase of the temperature.
Most of the curing agent can react with the epoxy resin at room temperature, so that the reaction rate is further accelerated by utilizing the heat released by the reaction in the curing process of the epoxy resin, and the curing agent and the epoxy resin are mixed and then placed in a mold for drying to obtain a finished product (cold curing). However, the product produced in this way is gelled when the reaction proceeds to the later stage, and the physical properties of the polymer solid material are gradually increased as the reaction proceeds, and the polymer solid material is cured, and at this time, the unreacted reactive group is hard to react with the curing agent and the like in the curing material, and remains. When the finished product is exposed to proper conditions of heat, light, moisture and the like, the finished product can start to be cured again, so that the transparency of the epoxy resin is caused, and the aesthetic defect of the gold foil in the transparent epoxy resin is obviously influenced.
In patent document CN107312162A, in the preparation method of the epoxy resin material, the epoxy resin is still "mixed with the epoxy resin obtained in step (1), poured into a mold, and dried. The problems mentioned above still remain to be solved.
Disclosure of Invention
The invention aims to: the preparation method of the gold foil transparent epoxy resin is provided in order to solve the problems that most curing agents can react with the epoxy resin at room temperature, and the finished products prepared by the method can release heat to further accelerate the reaction rate, and once the finished products are exposed to heat, light, moisture and other conditions, the curing is started again, the transparency of the epoxy resin is reduced, and the attractiveness of gold foils in the transparent epoxy resin is affected.
In order to achieve the purpose, the invention adopts the following technical scheme:
according to one aspect of the invention, the gold foil transparent epoxy resin is provided, and comprises the following components in parts by weight:
80-120 parts of high-transparency epoxy resin;
1-3.5 parts of a curing agent;
0.1-1.2 parts of gold foil powder.
As a further description of the above technical solution:
the gold foil transparent epoxy resin comprises the following components in parts by weight:
80 parts of high-transparency epoxy resin;
1 part of a curing agent;
0.1 part of gold foil powder.
As a further description of the above technical solution:
the gold foil transparent epoxy resin comprises the following components in parts by weight:
100 parts of high-transparency epoxy resin;
2 parts of a curing agent;
0.5 part of gold foil powder.
As a further description of the above technical solution:
the gold foil transparent epoxy resin comprises the following components in parts by weight:
120 parts of high-transparency epoxy resin;
3.5 parts of a curing agent;
1.2 parts of gold foil powder.
According to another aspect of the present invention, there is also provided a method for preparing a gold foil transparent epoxy resin, comprising the steps of:
1) taking gold foil powder, a curing agent and high-transparency epoxy resin which correspond to the weight components;
2) after setting working parameters of normal-pressure stirring equipment, gradually adding epoxy resin liquid and a curing agent, and then adding gold foil powder until mixing is completed, wherein the working speed of the normal-pressure stirring equipment is 85-2500rpm, heating while stirring, and the working temperature is 60-100 ℃;
3) and (3) after the material mixing time is reached, pouring the cured material into a mold, and drying to finish the preparation of the gold foil transparent epoxy resin.
As a further description of the above technical solution:
the working temperature of the normal-pressure stirring equipment is 80 ℃, the working rotating speed is 100rpm, and the stirring and mixing time of the whole material is 3-5 h.
As a further description of the above technical solution:
the working mode of the normal-pressure stirring equipment is that the filling and the stirring are integrated.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, through adjusting the thermal deformation temperature of the hole, the polymerization reaction can be carried out under the auxiliary action of normal pressure stirring equipment when the polymerization reaction enters the gelation stage and even the physical property of the high polymer solid material is presented, so that the residue of active groups is avoided, the curing reaction is difficult to occur when the finished product is exposed under the conditions of heat, light, moisture and the like, and the transparency of the epoxy resin finished product and the attractiveness of the gold foil in the transparent epoxy resin are ensured.
2. In the invention, even in the later stage of reaction, the curing system in the normal-pressure stirring equipment is still in a thermal deformation state temperature state, so that on one hand, the full reaction of a cured substance can be ensured, the physical property presentation of a high-molecular solid material is hindered, on the other hand, the discharging is more convenient, the preparation of a finished product is simpler and more convenient, and the plasticity is better.
Drawings
Fig. 1 shows a flow chart of a method for preparing and producing a gold foil transparent epoxy resin according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The gold foil transparent epoxy resin comprises the following materials in parts by weight:
80-120 parts of high-transparency epoxy resin;
1-3.5 parts of a curing agent;
0.1-1.2 parts of gold foil powder.
The curing agent adopts dicyandiamide, imidazoles and aromatic diamine, so that the problems of water resistance, heat resistance, toughness improvement and the like of an epoxy resin cured product are further solved on the basis of meeting the requirements of reducing the curing temperature, shortening the curing time and prolonging the service life of a latent curing agent in use.
In order to clearly understand the technical scheme of the invention, the technical scheme of the invention is described in detail through specific examples.
Example one
The gold foil transparent epoxy resin comprises the following materials in parts by weight:
80 parts of high-transparency epoxy resin;
1 part of a curing agent;
0.1 part of gold foil powder.
Example two
The gold foil transparent epoxy resin comprises the following materials in parts by weight:
80 parts of high-transparency epoxy resin;
1 part of a curing agent;
0.1 part of gold foil powder.
EXAMPLE III
The gold foil transparent epoxy resin comprises the following materials in parts by weight:
120 parts of high-transparency epoxy resin;
3.5 parts of a curing agent;
1.2 parts of gold foil powder.
Referring to fig. 1, a method for preparing a gold foil transparent epoxy resin includes the following steps:
s101, taking gold foil powder, a curing agent and high-transparency epoxy resin which are prepared according to the weight components;
s103, gradually adding epoxy resin liquid and a curing agent after setting working parameters of normal-pressure stirring equipment, and then adding gold foil powder until the mixture is finished, wherein the working speed of the normal-pressure stirring equipment is 85-2500rpm, and heating is carried out during stirring, and the working temperature is 60-100 ℃;
and S105, after the material mixing time is reached, pouring the cured material into a mold, and drying to finish the preparation of the gold foil transparent epoxy resin.
Specifically, the working temperature of the normal-pressure stirring equipment is 80 ℃, the working rotating speed is 100rpm, and the stirring and mixing time of the whole material is 3-5 h.
Specifically, the working mode of the normal-pressure stirring equipment is a filling and stirring integration mode.
Since most of the curing agents are exothermically reacted with the epoxy resin at room temperature, but the curing agents can only partially react with the epoxy resin, even though the reaction efficiency is improved during the stirring process, sufficient reaction cannot be completely achieved.
The reaction rate can be directly increased at the early stage of curing, so that the working temperature parameters of the normal-pressure stirring equipment are well adjusted before the epoxy resin liquid and the curing agent are added, and the epoxy resin liquid and the curing agent can be reacted immediately after entering the normal-pressure stirring equipment.
In the early stage of reaction, the curing system is still in a flowable or small molecule mutual reaction stage, and at the moment, the high-speed stirring of normal-pressure stirring equipment can fully mix the epoxy resin liquid and the curing agent to ensure that the epoxy resin liquid and the curing agent are fully reacted and the curing is accelerated; on the other hand, the high-speed stirring can control the particle size distribution of the gold foil particles, so that the gold foil particles are uniformly mixed.
As the polymerization proceeds, the molecular weight gradually increases and the molecular weight increases to gel, at which point the system loses fluidity and forms an initial crosslinked network, and as the reaction proceeds, the crosslinking density gradually increases and the number of unreacted active groups decreases, and at which point the physical properties of the polymeric solid material are gradually increased.
At 80 ℃, the cured product is in a thermal deformation state, so even if the physical properties of the polymer solid material are presented, the cured product can still deform under the action of normal-pressure stirring equipment at the thermal deformation temperature, so that the curing reaction can still be carried out until the curing reaction is finished.
The working mode of the normal-pressure stirring equipment is filling and stirring integration, the material can directly enter a mold after being cured, and the material is dried and then molded, compared with the traditional preparation mode, the thermal deformation temperature of the holes is adjusted, so that the polymerization reaction enters gelation, even the physical property of a high-molecular solid material is presented, the curing reaction can still be carried out under the auxiliary action of the normal-pressure stirring equipment, the residue of active groups is avoided, the finished product is exposed under the conditions of heat, light, moisture and the like, the curing reaction is difficult to occur, and the transparency of the epoxy resin finished product and the attractiveness of a gold foil in transparent epoxy resin are ensured.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The gold foil transparent epoxy resin is characterized by comprising the following components in parts by weight:
80-120 parts of high-transparency epoxy resin;
1-3.5 parts of a curing agent;
0.1-1.2 parts of gold foil powder.
2. The gold foil transparent epoxy resin as claimed in claim 1, wherein the gold foil transparent epoxy resin is composed of the following materials by weight:
80 parts of high-transparency epoxy resin;
1 part of a curing agent;
0.1 part of gold foil powder.
3. The gold foil transparent epoxy resin as claimed in claim 1, wherein the gold foil transparent epoxy resin is composed of the following materials by weight:
100 parts of high-transparency epoxy resin;
2 parts of a curing agent;
0.5 part of gold foil powder.
4. The gold foil transparent epoxy resin as claimed in claim 1, wherein the gold foil transparent epoxy resin is composed of the following materials by weight:
120 parts of high-transparency epoxy resin;
3.5 parts of a curing agent;
1.2 parts of gold foil powder.
5. A preparation and production method of the gold foil transparent epoxy resin, which is used for preparing the gold foil transparent epoxy resin of claim 1, and comprises the following steps:
1) taking gold foil powder, a curing agent and high-transparency epoxy resin which correspond to the weight components;
2) after setting working parameters of normal-pressure stirring equipment, gradually adding epoxy resin liquid and a curing agent, and then adding gold foil powder until mixing is completed, wherein the working speed of the normal-pressure stirring equipment is 85-2500rpm, heating while stirring, and the working temperature is 60-100 ℃;
3) and (3) after the material mixing time is reached, pouring the cured material into a mold, and drying to finish the preparation of the gold foil transparent epoxy resin.
6. The method for preparing and producing the gold foil transparent epoxy resin as claimed in claim 5, wherein the working temperature of the normal pressure stirring device is 80 ℃, the working rotating speed is 100rpm, and the time for stirring and mixing the whole material is 3-5 h.
7. The method for preparing and producing gold foil transparent epoxy resin according to claim 6, wherein the normal pressure stirring device is in a filling and stirring integrated mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911171821.0A CN110903602A (en) | 2019-11-26 | 2019-11-26 | Preparation and production method of gold foil transparent epoxy resin |
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| CN201911171821.0A CN110903602A (en) | 2019-11-26 | 2019-11-26 | Preparation and production method of gold foil transparent epoxy resin |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1119997A (en) * | 1995-04-03 | 1996-04-10 | 黄英兆 | Preparation technology of jewelry and its changable colour jade-grain glue |
| CN103319868A (en) * | 2013-07-09 | 2013-09-25 | 上海神冠光电科技有限公司 | Colored translucent fiberglass |
| CN108570217A (en) * | 2018-05-15 | 2018-09-25 | 江苏兆鋆新材料股份有限公司 | A kind of preparation method and applications of high transparency epoxy resin composite material |
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2019
- 2019-11-26 CN CN201911171821.0A patent/CN110903602A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1119997A (en) * | 1995-04-03 | 1996-04-10 | 黄英兆 | Preparation technology of jewelry and its changable colour jade-grain glue |
| CN103319868A (en) * | 2013-07-09 | 2013-09-25 | 上海神冠光电科技有限公司 | Colored translucent fiberglass |
| CN108570217A (en) * | 2018-05-15 | 2018-09-25 | 江苏兆鋆新材料股份有限公司 | A kind of preparation method and applications of high transparency epoxy resin composite material |
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Application publication date: 20200324 |