CN110791092A - Glass fiber reinforced plastic material for embossment molding and preparation method thereof - Google Patents
Glass fiber reinforced plastic material for embossment molding and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a glass fiber reinforced plastic material for embossment molding, which is prepared from the following raw materials in parts by weight: 100 parts of epoxy modified polypyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone 3, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid ester, 6-10 parts of 1, 3, 5, 7-tetra (4-aminophenyl) adamantane, 15-20 parts of glass fiber powder, 3-6 parts of graphene fiber, 10-15 parts of inorganic filler and 5-10 parts of mold release agent. The invention also discloses a preparation method of the glass fiber reinforced plastic material for the embossment molding. The glass fiber reinforced plastic material for forming the embossment, disclosed by the invention, has the advantages of better comprehensive performance, better high-temperature resistance and wear resistance, more excellent oxidation resistance, flame retardance, mechanical property and water resistance, stronger toughness, difficulty in being easily damaged and long service life.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a glass fiber reinforced plastic material for embossment forming and a preparation method thereof.
Background
In recent years, along with economic development and social progress, people have increasingly advanced their aesthetic concepts and have been pursuing more and more strong visual aesthetics. The demand for relief sculpture for architectural decoration and garden landscape is more and more, and especially the demand for large-scale low relief sculpture is more and more growing. The embossment not only has the characteristics of hard texture, wear resistance and extremely heavy weight sense of natural stone, but also has the texture, strong plasticity and expressive force which are shown by the embossment, so that the embossment can show various artistic styles to the greatest extent, and the natural decorative effect and artistic connotation which are shown in the building and decorative space are incomparable with other decorative materials.
At present, the raw materials for manufacturing the relief sculpture are usually mud, wood, stone or gypsum and the like, and for the mud sculpture and the wood sculpture, the disadvantages are that the finished product is not easy to carry and easy to damage, and the finished product is easy to weathered after being stored outdoors for a long time; although the stone carving is relatively stable and has great advantages for outdoor storage, the randomness and the space span are limited, the carrying and the connection are also very difficult, and the gypsum carving element is easy to break and is not suitable for manufacturing large-scale embossments. Therefore, there is a need for a new material for relief molding.
The glass fiber reinforced plastic is also called glass fiber reinforced plastic, is internationally recognized and abbreviated as GFRP or FRP, belongs to thermosetting plastic, and is a composite material with various varieties, different properties and wide application. It is a new functional material made up by using synthetic resin, glass fibre and other additives through a compounding process. It is a high molecular organic resin reinforced with glass fibers or other fabrics, which is known for its glass-like transparency or translucency and its steel-like high strength. The material has good performance stability, difficult weathering, light weight, convenient carrying, excellent mechanical property and difficult damage, is a high-quality material for forming the embossment, is expected to become a preferred material for forming the embossment or sculpture in the future and has larger development potential. However, the glass fiber reinforced plastic material in the prior art has the defects of poor high temperature resistance, easy deformation and aging, further improved wear resistance, water resistance, oxidation resistance and flame retardance, complex raw material proportion, high processing cost and poor brittleness.
The invention patent of China with application number 201510398373.3 discloses glass fiber reinforced plastic and a method for manufacturing a sculpture, wherein the glass fiber reinforced plastic is made of WSR6101 type epoxy resin, acetone or epoxypropane butyl ether, a curing agent, a curing accelerator, a release agent, a mineral filler and reinforcing fibers, and the method for manufacturing the sculpture by the glass fiber reinforced plastic comprises the following three steps: firstly, manufacturing a die, then carrying out a forming process, and finally finishing to obtain a finished product. The invention has the beneficial effects that: the glass fiber reinforced plastic has good heat resistance, high strength and convenient molding, and the mold is prepared by adopting a soft film method, so that the shape of the product can be copied with high quality, and smooth demolding can be ensured; the reinforced fibers are connected together by using the resin glue solution prepared by adding the curing agent and the curing accelerator to prepare the glass fiber reinforced plastic sculpture, and the reinforced fibers are added at different parts according to different requirements, so that the finally obtained finished product is free from deformation and deformation, and the precision and the integrity are obviously improved. However, the glass fiber reinforced plastic material substrate is epoxy resin, and the material is easy to oxidize and age, so that the performance stability of the material needs to be further improved, and in addition, the flame retardance, the wear resistance and the mechanical property of the material need to be further improved.
Therefore, a more effective method is needed to be found for preparing the glass fiber reinforced plastic material for forming the embossment, which has better comprehensive performance, better high-temperature resistance and wear resistance, better oxidation resistance, flame retardance, mechanical property and water resistance, stronger toughness and difficult damage.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the glass fiber reinforced plastic material for the embossment molding and the preparation method thereof, and the preparation method is simple and easy to implement, convenient to construct, low in energy consumption and low in preparation cost, and is suitable for continuous large-scale production; the prepared glass fiber reinforced plastic material for forming the embossment has the advantages of better comprehensive performance, better high-temperature resistance and wear resistance, more excellent oxidation resistance, flame retardance, mechanical property and water resistance, stronger toughness, difficult damage and long service life.
In order to achieve the purpose, the invention adopts the technical scheme that:
the glass fiber reinforced plastic material for the relief molding is characterized by comprising the following raw materials in parts by weight: 100 parts of epoxy modified polypyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone 3, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid ester, 6-10 parts of 1, 3, 5, 7-tetra (4-aminophenyl) adamantane, 15-20 parts of glass fiber powder, 3-6 parts of graphene fiber, 10-15 parts of inorganic filler and 5-10 parts of mold release agent.
Further, the release agent is at least one of diesel oil, vegetable oil, floor wax and polydimethylsiloxane.
Further, the inorganic filler is at least one of talcum powder, fly ash and sepiolite powder.
Further, the preparation method of the epoxy modified polypyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone 3, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid ester comprises the following steps:
step S1, adding pyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid and a catalyst into a high-boiling-point solvent to form a solution, then adding the solution into a high-pressure reaction kettle, replacing the air in the kettle with nitrogen, then carrying out esterification reaction for 3-5 hours under the conditions of temperature 230-240 ℃ and absolute pressure of 10KPa-50KPa, and then releasing the pressure to normal pressure; then under the vacuum condition, controlling the temperature between 290 ℃ and 310 ℃, stirring and reacting for 18-24h, cooling to room temperature after the reaction is finished, discharging and precipitating in water, and then placing in a vacuum drying oven for drying at 80-90 ℃ to constant weight to obtain an intermediate product;
and S2, dissolving the intermediate product prepared in the step S1 in N-methyl pyrrolidone, adding epoxy chloropropane and an alkaline catalyst, stirring and reacting at 60-80 ℃ for 8-10 hours, then precipitating in water, and drying in a vacuum drying oven at 80-90 ℃ to constant weight to obtain the epoxy modified polypyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone 3, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid ester.
Further, in step S1, the molar ratio of pyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone to 3, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid to the catalyst to the high-boiling-point solvent is 1: (1-2): 8-12.
Preferably, the catalyst is at least one of thiophosphoryl amide, methyl benzene sulfonic acid and tetrabutyl titanate; the high boiling point solvent is at least one of dimethyl sulfoxide, N-dimethylformamide and N-methylpyrrolidone.
Preferably, the molar ratio of the intermediate product, the N-methyl pyrrolidone, the epichlorohydrin and the basic catalyst in the step S2 is 1: 3-5: 1: 0.5-0.8;
preferably, the basic catalyst is at least one of sodium hydride, potassium tert-butyl alkoxide and sodium hydroxide.
Another object of the present invention is to provide a method for preparing the glass fiber reinforced plastic material for relief forming, which comprises the following steps:
a: brushing a release agent, namely wiping the inner surface of the mold clean, and uniformly coating the release agent in the mold cavity of the mold to form a release agent layer so as to ensure that the finished product can be smoothly released;
b: the glass fiber reinforced plastic material for the embossment forming is prepared by uniformly mixing the raw materials in proportion to form a mixture, then adding the mixture into a mold coated with a release agent, carrying out high-temperature melting forming, then cooling to room temperature, demolding, and finishing.
Further, the high-temperature melting molding temperature is 220-240 ℃.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the preparation method of the glass fiber reinforced plastic material for the embossment molding provided by the invention is simple and easy to implement, convenient to construct, low in energy consumption and low in preparation cost, and is suitable for continuous large-scale production; the prepared glass fiber reinforced plastic material for forming the embossment has the advantages of better comprehensive performance, better high-temperature resistance and wear resistance, more excellent oxidation resistance, flame retardance, mechanical property and water resistance, stronger toughness, difficult damage and long service life.
Detailed Description
The invention relates to a glass fiber reinforced plastic material for embossment molding, which is characterized by comprising the following raw materials in parts by weight: 100 parts of epoxy modified polypyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone 3, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid ester, 6-10 parts of 1, 3, 5, 7-tetra (4-aminophenyl) adamantane, 15-20 parts of glass fiber powder, 3-6 parts of graphene fiber, 10-15 parts of inorganic filler and 5-10 parts of mold release agent.
Further, the release agent is at least one of diesel oil, vegetable oil, floor wax and polydimethylsiloxane; the inorganic filler is at least one of talcum powder, fly ash and sepiolite powder.
Further, the preparation method of the epoxy modified polypyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone 3, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid ester comprises the following steps:
step S1, adding pyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid and a catalyst into a high-boiling-point solvent to form a solution, then adding the solution into a high-pressure reaction kettle, replacing the air in the kettle with nitrogen, then carrying out esterification reaction for 3-5 hours under the conditions of temperature 230-240 ℃ and absolute pressure of 10KPa-50KPa, and then releasing the pressure to normal pressure; then under the vacuum condition, controlling the temperature between 290 ℃ and 310 ℃, stirring and reacting for 18-24h, cooling to room temperature after the reaction is finished, discharging and precipitating in water, and then placing in a vacuum drying oven for drying at 80-90 ℃ to constant weight to obtain an intermediate product;
step S2, dissolving the intermediate product prepared in the step S1 in N-methyl pyrrolidone, adding epoxy chloropropane and an alkaline catalyst, stirring and reacting at 60-80 ℃ for 8-10 hours, then precipitating in water, and then drying in a vacuum drying oven at 80-90 ℃ to constant weight to obtain epoxy modified polypyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone 3, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid ester; in step S1, the molar ratio of pyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone to 3, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid to the catalyst to the high-boiling solvent is 1: 1 (1-2) to (8-12); the catalyst is at least one of thiophosphoryl amide, methyl benzene sulfonic acid and tetrabutyl titanate; the high boiling point solvent is at least one of dimethyl sulfoxide, N-dimethylformamide and N-methylpyrrolidone; in the step S2, the molar ratio of the intermediate product to the N-methyl pyrrolidone to the epichlorohydrin to the basic catalyst is 1: 3-5: 1: 0.5-0.8; the alkaline catalyst is at least one of sodium hydride, potassium tert-butyl alkoxide and sodium hydroxide.
Another object of the present invention is to provide a method for preparing the glass fiber reinforced plastic material for relief forming, which comprises the following steps:
a: brushing a release agent, namely wiping the inner surface of the mold clean, and uniformly coating the release agent in the mold cavity of the mold to form a release agent layer so as to ensure that the finished product can be smoothly released;
b: uniformly mixing the raw materials in proportion to form a mixture, adding the mixture into a mold coated with a release agent, carrying out high-temperature melting molding, cooling to room temperature, demolding, and finishing to obtain the glass fiber reinforced plastic material for embossment molding; the high-temperature melting and molding temperature is 220-240 ℃.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the preparation method of the glass fiber reinforced plastic material for the embossment molding provided by the invention is simple and easy to implement, convenient to construct, low in energy consumption and low in preparation cost, and is suitable for continuous large-scale production; the prepared glass fiber reinforced plastic material for forming the embossment has the advantages of better comprehensive performance, better high-temperature resistance and wear resistance, more excellent oxidation resistance, flame retardance, mechanical property and water resistance, stronger toughness, difficult damage and long service life.
The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto.
Example 1
Embodiment 1 provides a glass fiber reinforced plastic material for relief molding, which is characterized by comprising the following raw materials in parts by weight: 100 parts of epoxy modified polypyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone 3, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid ester, 6 parts of 1, 3, 5, 7-tetra (4-aminophenyl) adamantane, 15 parts of glass fiber powder, 3 parts of graphene fiber, 10 parts of talcum powder and 5 parts of release agent diesel.
The preparation method of the epoxy modified polypyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone 3, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid ester comprises the following steps:
step S1, adding pyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid and thiophosphoryl amide into dimethyl sulfoxide to form a solution, then adding the solution into a high-pressure reaction kettle, replacing the air in the kettle with nitrogen, then carrying out esterification reaction for 3 hours under the conditions of the temperature of 230 ℃ and the absolute pressure of 10KPa, and then relieving the pressure to the normal pressure; then under the vacuum condition, controlling the temperature between 290 ℃, stirring and reacting for 18h, cooling to room temperature after the reaction is finished, discharging and precipitating in water, and then placing in a vacuum drying oven for drying to constant weight at 80 ℃ to obtain an intermediate product; the mole ratio of the pyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone to the 3, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid to the thiophosphoryl amide to the dimethyl sulfoxide is 1: 8;
step S2, dissolving the intermediate product prepared in the step S1 in N-methyl pyrrolidone, adding epoxy chloropropane and sodium hydride, stirring at 60 ℃ for reaction for 8 hours, then precipitating in water, and then placing in a vacuum drying oven at 80-90 ℃ for drying to constant weight to obtain epoxy modified polypyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone 3, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid ester; the mol ratio of the intermediate product, the N-methyl pyrrolidone, the epichlorohydrin and the sodium hydride is 1: 3: 1: 0.5;
preferably, the alkaline catalyst is at least one of potassium tert-butyl alkoxide and sodium hydroxide.
The preparation method of the glass fiber reinforced plastic material for the embossment molding is characterized by comprising the following steps:
a: brushing a release agent, namely wiping the inner surface of the mold clean, and uniformly coating the release agent in the mold cavity of the mold to form a release agent layer so as to ensure that the finished product can be smoothly released;
b: uniformly mixing the raw materials in proportion to form a mixture, adding the mixture into a mold coated with a release agent, carrying out high-temperature melting molding, cooling to room temperature, demolding, and finishing to obtain the glass fiber reinforced plastic material for embossment molding; the high-temperature melting and molding temperature is 220 ℃.
Example 2
Embodiment 2 provides a glass fiber reinforced plastic material for relief forming, which has a formulation and a preparation method substantially the same as those of embodiment 1, except that the glass fiber reinforced plastic material for relief forming comprises the following raw materials in parts by weight: 100 parts of epoxy modified polypyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone 3, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid ester, 7 parts of 1, 3, 5, 7-tetra (4-aminophenyl) adamantane, 16 parts of glass fiber powder, 4 parts of graphene fiber, 11 parts of talcum powder and 6 parts of release agent vegetable oil.
Example 3
Embodiment 3 provides a glass fiber reinforced plastic material for relief molding, which has a formulation and a preparation method substantially the same as those of embodiment 1, except that the glass fiber reinforced plastic material is prepared from the following raw materials in parts by weight: 100 parts of epoxy modified polypyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone 3, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid ester, 8 parts of 1, 3, 5, 7-tetra (4-aminophenyl) adamantane, 17 parts of glass fiber powder, 4.5 parts of graphene fiber, 13 parts of talcum powder and 7 parts of release agent floor wax.
Example 4
Embodiment 4 provides a glass fiber reinforced plastic material for relief molding, which has a formulation and a preparation method substantially the same as those of embodiment 1, except that the glass fiber reinforced plastic material is prepared from the following raw materials in parts by weight: 100 parts of epoxy modified polypyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone 3, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid ester, 9 parts of 1, 3, 5, 7-tetra (4-aminophenyl) adamantane, 19 parts of glass fiber powder, 5 parts of graphene fiber, 14 parts of talcum powder and 9 parts of mold release agent floor wax.
Example 5
Embodiment 5 provides a glass fiber reinforced plastic material for relief molding, which has a formulation and a preparation method substantially the same as those of embodiment 1, except that the glass fiber reinforced plastic material is prepared from the following raw materials in parts by weight: 100 parts of epoxy modified polypyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone 3, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid ester, 10 parts of 1, 3, 5, 7-tetra (4-aminophenyl) adamantane, 20 parts of glass fiber powder, 6 parts of graphene fiber, 15 parts of talcum powder and 10 parts of mold release agent floor wax.
Comparative example 1
Comparative example 1 provides a glass fiber reinforced plastic material for relief molding, which was substantially the same in formulation and preparation method as example 1, except that 1, 3, 5, 7-tetrakis (4-aminophenyl) adamantane was not added.
Comparative example 2
Comparative example 2 provides a glass fiber reinforced plastic material for relief molding, which is substantially the same in formulation and preparation method as example 1, except that graphene fibers are not added.
Comparative example 3
Comparative example 3 provides a glass fiber reinforced plastic material for relief molding, which was substantially the same in formulation and preparation method as example 1, except that talc was not added.
In order to illustrate the technical effects of the embodiments of the present invention, the related properties of the glass fiber reinforced plastic material for relief forming described in each example were tested with reference to national standards, and the test methods and test results are shown in table 1.
TABLE 1
| Item | Tensile strength | Limiting oxygen index | Bending strength |
| Unit of | MPa | ％ | MPa |
| Test standard | GB/T1040.1-2006 | GB/T2406-1993 | GB/T9341-2000 |
| Example 1 | 70 | 27 | 82 |
| Example 2 | 72 | 28 | 84 |
| Example 3 | 75 | 30 | 85 |
| Example 4 | 77 | 31 | 87 |
| Example 5 | 80 | 33 | 90 |
| Comparative example 1 | 58 | 23 | 71 |
| Comparative example 2 | 55 | 24 | 69 |
| Comparative example 3 | 64 | 25 | 74 |
As can be seen from Table 1, the glass fiber reinforced plastic materials for relief molding in examples 1 to 5 have excellent mechanical properties and flame retardancy; the above properties are the result of the synergistic effect of the components.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. The glass fiber reinforced plastic material for the relief molding is characterized by comprising the following raw materials in parts by weight: 100 parts of epoxy modified polypyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone 3, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid ester, 6-10 parts of 1, 3, 5, 7-tetra (4-aminophenyl) adamantane, 15-20 parts of glass fiber powder, 3-6 parts of graphene fiber, 10-15 parts of inorganic filler and 5-10 parts of mold release agent.
2. A glass fiber reinforced plastic material for relief molding according to claim 1, wherein the release agent is at least one of diesel oil, vegetable oil, floor wax, and polydimethylsiloxane.
3. The glass fiber reinforced plastic material for relief molding according to claim 1, wherein the inorganic filler is at least one of talc, fly ash and sepiolite powder.
4. The glass fiber reinforced plastic material for relief molding according to claim 1, wherein the preparation method of the epoxy-modified polypyrazolo [1, 5-a ] -1, 3, 5-triazine-2, 4(1H, 3H) -dione 3, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylate comprises the following steps:
step S1, adding pyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid and a catalyst into a high-boiling-point solvent to form a solution, then adding the solution into a high-pressure reaction kettle, replacing the air in the kettle with nitrogen, then carrying out esterification reaction for 3-5 hours under the conditions of temperature 230-240 ℃ and absolute pressure of 10KPa-50KPa, and then releasing the pressure to normal pressure; then under the vacuum condition, controlling the temperature between 290 ℃ and 310 ℃, stirring and reacting for 18-24h, cooling to room temperature after the reaction is finished, discharging and precipitating in water, and then placing in a vacuum drying oven for drying at 80-90 ℃ to constant weight to obtain an intermediate product;
and S2, dissolving the intermediate product prepared in the step S1 in N-methyl pyrrolidone, adding epoxy chloropropane and an alkaline catalyst, stirring and reacting at 60-80 ℃ for 8-10 hours, then precipitating in water, and drying in a vacuum drying oven at 80-90 ℃ to constant weight to obtain the epoxy modified polypyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -diketone 3, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid ester.
5. The glass fiber reinforced plastic material for relief molding according to claim 4, wherein the molar ratio of pyrazolo [1, 5-A ] -1, 3, 5-triazine-2, 4(1H, 3H) -dione, 3-difluoro- [1, 1-biphenyl ] -4, 4-dicarboxylic acid, catalyst and high-boiling solvent in step S1 is 1: (1-2): (8-12).
6. The glass fiber reinforced plastic material for relief molding according to claim 4, wherein the catalyst is at least one of thiophosphoramide, methyl benzene sulfonic acid, and tetrabutyl titanate; the high boiling point solvent is at least one of dimethyl sulfoxide, N-dimethylformamide and N-methylpyrrolidone.
7. The glass fiber reinforced plastic material for relief molding according to claim 4, wherein the molar ratio of the intermediate product, N-methylpyrrolidone, epichlorohydrin and basic catalyst in step S2 is 1: 3-5: 1: 0.5-0.8.
8. A glass fiber reinforced plastic material for relief molding according to claim 4, wherein the basic catalyst is at least one of sodium hydride, potassium tert-butyl alkoxide, and sodium hydroxide.
9. A glass fiber reinforced plastic material for relief forming according to any one of claims 1 to 8, wherein the preparation method of the glass fiber reinforced plastic material for relief forming comprises the following steps:
a: brushing a release agent, namely wiping the inner surface of the mold clean, and uniformly coating the release agent in the mold cavity of the mold to form a release agent layer so as to ensure that the finished product can be smoothly released;
b: the glass fiber reinforced plastic material for the embossment forming is prepared by uniformly mixing the raw materials in proportion to form a mixture, then adding the mixture into a mold coated with a release agent, carrying out high-temperature melting forming, then cooling to room temperature, demolding, and finishing.
10. A glass fiber reinforced plastic material for relief molding according to claim 9, wherein the high-temperature melt molding temperature is 220-240 ℃.
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| CN201911073446.6A CN110791092A (en) | 2019-11-05 | 2019-11-05 | Glass fiber reinforced plastic material for embossment molding and preparation method thereof |
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Application publication date: 20200214 |