CN110564158A - transparent silica gel bead with color dots wrapped inside and preparation process thereof - Google Patents
transparent silica gel bead with color dots wrapped inside and preparation process thereof Download PDFInfo
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- CN110564158A CN110564158A CN201910881328.1A CN201910881328A CN110564158A CN 110564158 A CN110564158 A CN 110564158A CN 201910881328 A CN201910881328 A CN 201910881328A CN 110564158 A CN110564158 A CN 110564158A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/203—Solid polymers with solid and/or liquid additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/16—Solid spheres
- C08K7/18—Solid spheres inorganic
Abstract
The invention provides a transparent silica gel bead with color dots wrapped inside and a preparation method thereof, the transparent silica gel bead with the color dots wrapped inside is prepared by fully mixing 95.5-98.0 parts by weight of silica gel, 0.5-3.0 parts by weight of colored gravel particles and 1.0-2.0 parts by weight of vulcanizing agent, and performing primary vulcanization and secondary vulcanization, wherein the colored gravel particles can be single color or mixed gravel beads with multiple colors, so that the color of the particles in the silicon transparent silica gel bead is rich and colorful, and the color or transparent silica gel bead is ensured to have single color or multicolor three-dimensional effect, thereby improving the integral transparent vision of the transparent silica gel bead, leading the integral effect of the transparent silica gel bead to be more vivid and vivid in vision, being creative in necklace, being applied to a pacifying nipple bead chain of a baby, and grinding the baby, baby gutta-percha is more popular with babies.
Description
Technical Field
The invention belongs to the field of lightweight materials, and particularly relates to a transparent silica gel bead with color dots wrapped inside and a preparation process thereof.
background
silicone rubber is also known as organosiloxane or silicone rubber. The linear high molecular polymer with main molecular chain of-Si-O-bond and monovalent organic group as side group is divided into two types of high-temperature and room-temperature vulcanized silicone rubber according to vulcanization temperature, the first type is solid rubber with molecular weight of more than 100X104, and the latter is solid rubber with molecular weight of 1X 104～5×104Is a viscous liquid. The bonding energy of Si-O bond (370kJ/mol) is much higher than that of C-C bond (240kJ/mol), and the molecular chain is flexible, so that the high-temperature and low-temperature resistance is excellent, and the use temperature is-70-300 ℃; meanwhile, the electric insulation performance is excellent, and the electric insulation material has no toxic or harmful effect on human tissues. The silicon rubber is soft and suitable for grinding teeth, the components are safe and can not bring health risks to infants, and the high-temperature-resistant and easy-to-disinfect silicon rubber is widely applied to pacifying nipple bead chains, infant grinding bead necklaces and infant gutters at present.
Vulcanizing agents are divided into two major classes, inorganic and organic. The former category includes sulfur, sulfur monochloride, selenium, tellurium, and the like. The latter category includes sulfur-containing accelerators (e.g., accelerator TMTD), organic peroxides (e.g., benzoyl peroxide), quinone oxime compounds, polysulfide polymers, urethanes, maleimide derivatives, and the like.
The silicon rubber vulcanizing agent comprises elements of sulfur, selenium and tellurium, sulfur-containing compounds, peroxides, quinone compounds, amine compounds, resin compounds, metal oxides, isocyanate and the like. The most commonly used are elemental sulphur and sulphur-containing compounds.
The silica gel color master batch is also called color master batch and color master batch paste, is used for coloring various silica gel products, and is suitable for compression molding process. Is an essential raw material for coloring silica gel products. The silica gel color master batch is prepared by mixing special silica gel, various toners and various auxiliaries, is used for coloring various silica gel products, and is suitable for a compression molding process.
The pacifier bead chain made of silica gel materials on the market at present has rich and colorful appearance, but the color of a single silica gel bead sub-component is single or the outer surface of the single silica gel bead sub-component is multicolor. The invention can realize three-dimensional transparent multicolor visual effect.
Disclosure of Invention
in order to solve the problems, the invention provides a transparent silica gel bead internally wrapped with colored dots and a preparation method thereof, wherein the transparent silica gel bead internally wrapped with the colored dots is of a transparent structure, and one or more particles are randomly dispersed in the transparent silica gel bead, and the specific invention content is as follows:
the invention provides a transparent silica gel bead with a color point wrapped inside, which is prepared by fully mixing 95.5-98.0 parts by weight of silica gel, 0.5-3.0 parts by weight of colored gravel particles and 1.0-2.0 parts by weight of vulcanizing agent, and performing primary vulcanization and secondary vulcanization.
In some embodiments of the present invention, the colored gravel particles are prepared from 96 to 98.5 parts by weight of silica gel, 0.5 to 2.0 parts by weight of silica gel color masterbatch and 1.0 to 2.0 parts by weight of vulcanizing agent by mixing, cutting, vulcanizing and separating.
In some embodiments of the present invention, the colored gravel particles have an average particle size of 0.5 to 5 mm.
In some embodiments of the present invention, the shape of the colored gravel particles may be one or more of spheres, cubes, cylinders, cuboids, cones, and other geometric or irregular shapes.
the second purpose of the invention is to provide a preparation method of colored gravel particles, which is technically characterized in that: the preparation method of the colored gravel comprises the following steps:
S1, mixing: putting 96-98.5 parts by weight of silica gel, 0.5-2.0 parts by weight of silica gel color master batch and 1.0-2.0 parts by weight of vulcanizing agent into a rubber mixing mill for mixing to obtain a first mixture;
s2, cutting: cutting the first mixture mixed in the step S1 into pieces with the average particle size of 0.5-5 mm, and shearing;
S3, vulcanizing: putting the first mixture sheared in the step S2 into a mold, and carrying out primary vulcanization through an oil pressure flat plate forming machine to achieve compression molding;
s4, separation: separating the first mixture molded by compression molding in the step S3 by a punching machine, screening, and inspecting by quality inspection to obtain the colored gravel
In some embodiments of the present invention, the temperature for the mixing in step S1 is 10 to 60 ℃, and the mixing time is 5 to 40 min.
In some embodiments of the invention, the vulcanization temperature in the step S3 is 100 to 200 ℃, and the vulcanization time is 15 to 500S.
the third purpose of the invention is to provide a preparation method of transparent silica gel beads with color dots wrapped inside, which has the technical points that: the preparation method of the transparent silica gel beads with the color dots wrapped inside comprises the following steps:
s1, mixing: mixing 95.5-98.0 parts by weight of silica gel, 0.5-3.0 parts by weight of colored sand particles and 1.0-2.0 parts by weight of vulcanizing agent at 10-60 ℃ for 5-40 min by a rubber mixing mill to uniformly mix the colored sand particles to obtain a second mixture;
s2, cutting: carrying out sheet cutting on the second mixture mixed in the step S1;
S3, primary vulcanization: putting the second mixture cut in the step S2 into a mold, and carrying out primary vulcanization for 15-500S at 110-220 ℃ by using an oil pressure flat plate forming machine to achieve compression molding;
s4, secondary vulcanization: and (4) putting the primarily vulcanized second mixture in the step (S3) into an oven for secondary vulcanization, and finally performing quality inspection to obtain the transparent silica gel beads with the color points wrapped inside, wherein the secondary vulcanization can remove the peculiar smell of a vulcanizing agent and various auxiliaries added in the silicone rubber product, and the density, the tensile strength, the rebound resilience, the hardness, the swelling degree, the density and the thermal stability of the structure of the silicone rubber product are greatly improved physically.
in some embodiments of the invention, the secondary vulcanization temperature in the step S4 is 120-220 ℃, and the secondary vulcanization time is 30-240 min.
Compared with the prior art, the invention has the beneficial effects that:
The transparent silica gel bead with the color dots wrapped inside is prepared by fully mixing 95.5-98.0 parts by weight of silica gel, 0.5-3.0 parts by weight of colored sand particles and 1.0-2.0 parts by weight of vulcanizing agent, and performing primary vulcanization and secondary vulcanization, wherein the colored sand particles can be single color or sand beads mixed with multiple colors.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below so that those skilled in the art can better understand the advantages and features of the present invention, and thus the scope of the present invention will be more clearly defined. The embodiments described herein are only a few embodiments of the present invention, rather than all embodiments, and all other embodiments that can be derived by one of ordinary skill in the art without inventive faculty based on the embodiments described herein are intended to fall within the scope of the present invention.
example 1
the transparent silica gel bead with the color dots wrapped inside is prepared by fully mixing 98.0 parts by weight of silica gel, 0.5 part by weight of colored gravel particles and 1.0 part by weight of vulcanizing agent, and performing primary vulcanization and secondary vulcanization.
The colored sand gravel particles are prepared by mixing, cutting, vulcanizing and separating 98.5 parts by weight of silica gel, 0.5 part by weight of silica gel color master batch and 1.0 part by weight of vulcanizing agent.
wherein the average diameter of the colored sand particles is 0.5 mm.
Wherein the colored gravel particles are spherical.
wherein, the vulcanizing agents are di-tert-butyl peroxide (vulcanizing agent DTBP), the vulcanizing temperature is 160-180 ℃, and the type is as follows: C-13A, the color master is purchased from the self-Jun chemical industry (Zhongshan) Co., Ltd, and the model is ZJ-712.
the preparation method of the colored gravel particles provided by the invention comprises the following steps:
s1, mixing: putting 98.5 parts by weight of silica gel, 0.5 part by weight of silica gel color master batch and 1.0 part by weight of vulcanizing agent into a rubber mixing mill, and mixing for 50min at 10 ℃ to obtain a first mixture;
S2, cutting: shearing the first mixture mixed in the step S1 according to the average particle size of 0.5mm, and discharging the mixture into pieces;
S3, vulcanizing: putting the first mixture sheared in the step S2 into a mold, and carrying out primary vulcanization for 500 seconds at 100 ℃ through an oil pressure flat plate forming machine to achieve compression molding;
S4, separation: separating the first mixture molded in the step S3 by a punching machine, screening and then inspecting by quality inspection to obtain the colored gravel particles;
the invention provides a preparation method of transparent silica gel beads with color dots wrapped inside, which comprises the following steps:
S1, mixing: mixing 98.0 parts by weight of silica gel, 0.5 part by weight of colored sand particles and 1.0 part by weight of vulcanizing agent at 10 ℃ for 40min by a rubber mixing mill so as to uniformly mix the colored sand particles to obtain a second mixture;
S2, cutting: carrying out sheet cutting on the second mixture mixed in the step S1;
S3, primary vulcanization: putting the second mixture cut in the step S2 into a mold, and carrying out primary vulcanization for 500 seconds at 110 ℃ by an oil pressure flat plate forming machine to achieve compression molding;
S4, secondary vulcanization: and S3, putting the primarily vulcanized second mixture into an oven for secondary vulcanization, wherein the secondary vulcanization temperature is 120 ℃, the secondary vulcanization time is 240min, and finally, the transparent silica gel beads with the color points wrapped inside are obtained through quality inspection.
Example 2
the transparent silica gel bead with the color dots wrapped inside is prepared by fully mixing 95.5 parts by weight of silica gel, 3.0 parts by weight of colored gravel particles and 2.0 parts by weight of vulcanizing agent, and performing primary vulcanization and secondary vulcanization.
The colored sand gravel particles are prepared by mixing, cutting, vulcanizing and separating 96.0 parts by weight of silica gel, 2.0 parts by weight of silica gel color master batch and 2.0 parts by weight of vulcanizing agent.
Wherein the average grain diameter of the colored gravel particles is 5 mm.
Wherein the colored gravel particles are cylindrical in shape;
wherein, the vulcanizing agents are di-tert-butyl peroxide (vulcanizing agent DTBP), the vulcanizing temperature is 160-180 ℃, and the type is as follows: C-13A, the color master is purchased from the self-Jun chemical industry (Zhongshan) Co., Ltd, and the model is ZJ-712.
the preparation method of the colored gravel particles provided by the invention comprises the following steps:
s1, mixing: putting 96.0 parts by weight of silica gel, 2.0 parts by weight of silica gel color master batch and 2.0 parts by weight of vulcanizing agent into a rubber mixing mill, and mixing for 5min at 60 ℃ to obtain a first mixture;
S2, cutting: cutting the first mixture mixed in the step S1 into pieces with the average grain diameter of 5 mm;
S3, vulcanizing: putting the first mixture sheared in the step S2 into a mold, and carrying out primary vulcanization for 15S at 200 ℃ through an oil pressure flat plate forming machine to achieve compression molding;
S4, separation: separating the first mixture molded in the step S3 by a punching machine, screening and then inspecting by quality inspection to obtain the colored gravel particles;
the invention provides a preparation method of transparent silica gel beads with color dots wrapped inside, which comprises the following steps:
s1, mixing: mixing 95.5 parts by weight of silica gel, 3.0 parts by weight of colored sand particles and 2.0 parts by weight of vulcanizing agent at 50 ℃ for 30min by a rubber mixing mill to uniformly mix the colored sand particles to obtain a second mixture;
S2, cutting: carrying out sheet cutting on the second mixture mixed in the step S1;
s3, primary vulcanization: putting the second mixture cut in the step S2 into a mold, and carrying out primary vulcanization for 50S at 220 ℃ by an oil pressure flat plate forming machine to realize compression molding;
S4, secondary vulcanization: and (5) putting the primarily vulcanized second mixture obtained in the step (S3) into an oven for secondary vulcanization, wherein the secondary vulcanization temperature is 200 ℃, the secondary vulcanization time is 30min, and finally, the transparent silica gel beads with the color points wrapped inside are obtained through quality inspection.
Example 3
the transparent silica gel bead with the color dots wrapped inside is prepared by fully mixing 96.0 parts by weight of silica gel, 2.0 parts by weight of colored gravel particles and 1.5 parts by weight of vulcanizing agent, and performing primary vulcanization and secondary vulcanization.
The colored sand gravel particles are prepared by mixing 97.0 parts by weight of silica gel, 1.5 parts by weight of silica gel color master batch and 1.5 parts by weight of vulcanizing agent, cutting, vulcanizing and separating.
Wherein the average grain diameter of the colored gravel particles is 2.5 mm.
Wherein the shape of the colored gravel particles is triangular cone.
Wherein, the vulcanizing agents are di-tert-butyl peroxide (vulcanizing agent DTBP), the vulcanizing temperature is 160-180 ℃, and the type is as follows: C-13A, the color master is purchased from the self-Jun chemical industry (Zhongshan) Co., Ltd, and the model is ZJ-712.
The preparation method of the colored gravel particles provided by the invention comprises the following steps:
s1, mixing: putting 97.0 parts by weight of silica gel, 1.5 parts by weight of silica gel color master batch and 1.5 parts by weight of vulcanizing agent into a rubber mixing mill, and mixing for 22.5min at 35 ℃ to obtain a first mixture;
S2, cutting: shearing the first mixture mixed in the step S1 according to the average particle size of 2.5mm, and discharging the mixture into pieces;
s3, vulcanizing: putting the first mixture sheared in the step S2 into a mold, and carrying out primary vulcanization for 250 seconds at 150 ℃ through an oil pressure flat plate forming machine to realize compression molding;
s4, separation: separating the first mixture molded in the step S3 by a punching machine, screening and then inspecting by quality inspection to obtain the colored gravel particles;
The invention provides a preparation method of transparent silica gel beads with color dots wrapped inside, which comprises the following steps:
s1, mixing: mixing 96.0 parts by weight of silica gel, 2.0 parts by weight of colored sand particles and 1.5 parts by weight of vulcanizing agent at 35 ℃ for 22.5min by a rubber mixing mill so as to uniformly mix the colored sand particles to obtain a second mixture;
S2, cutting: carrying out sheet cutting on the second mixture mixed in the step S1;
S3, primary vulcanization: putting the second mixture cut in the step S2 into a mold, and carrying out primary vulcanization for 250S at 165 ℃ by using an oil pressure flat plate forming machine to realize compression molding;
s4, secondary vulcanization: and (5) putting the primarily vulcanized second mixture obtained in the step (S3) into an oven for secondary vulcanization, wherein the secondary vulcanization temperature is 170 ℃, the secondary vulcanization time is 145min, and finally, the transparent silica gel beads with the color points wrapped inside are obtained through quality inspection.
example 4
The transparent silica gel bead with the color dots wrapped inside is prepared by fully mixing 97.0 parts by weight of silica gel, 1.0 part by weight of colored gravel particles and 2.0 parts by weight of vulcanizing agent, and performing primary vulcanization and secondary vulcanization.
the colored sand gravel particles are prepared by mixing, cutting, vulcanizing and separating 98.0 parts by weight of silica gel, 1.0 part by weight of silica gel color master batch and 1.0 part by weight of vulcanizing agent.
Wherein the average grain diameter of the colored gravel particles is 3 mm.
wherein the shape of the colored gravel particles is cuboid.
wherein, the vulcanizing agents are di-tert-butyl peroxide (vulcanizing agent DTBP), the vulcanizing temperature is 160-180 ℃, and the type is as follows: C-13A, the color master is purchased from the self-Jun chemical industry (Zhongshan) Co., Ltd, and the model is ZJ-712.
The preparation method of the colored gravel particles provided by the invention comprises the following steps:
S1, mixing: putting 98.0 parts by weight of silica gel, 1.0 part by weight of silica gel color master batch and 1.0 part by weight of vulcanizing agent into a rubber mixing mill, and mixing for 35min at 40 ℃ to obtain a first mixture;
S2, cutting: shearing the first mixture mixed in the step S1 according to the average particle size of 3mm, and taking out of a sheet;
s3, vulcanizing: putting the first mixture sheared in the step S2 into a mold, and carrying out primary vulcanization for 200S at 180 ℃ through an oil pressure flat plate forming machine to achieve compression molding;
s4, separation: separating the first mixture molded in the step S3 by a punching machine, screening and then inspecting by quality inspection to obtain the colored gravel particles;
the invention provides a preparation method of transparent silica gel beads with color dots wrapped inside, which comprises the following steps:
s1, mixing: mixing 97.0 parts by weight of silica gel, 1.0 part by weight of colored sand particles and 2.0 parts by weight of vulcanizing agent at 20 ℃ for 45min by a rubber mixing mill so as to uniformly mix the colored sand particles to obtain a second mixture;
s2, cutting: carrying out sheet cutting on the second mixture mixed in the step S1;
S3, primary vulcanization: putting the second mixture cut in the step S2 into a mold, and carrying out primary vulcanization for 200S at 180 ℃ by an oil pressure flat plate forming machine to achieve compression molding;
S4, secondary vulcanization: and (5) putting the primarily vulcanized second mixture obtained in the step (S3) into an oven for secondary vulcanization at the temperature of 150 ℃ for 150min, and finally obtaining the transparent silica gel beads with the color dots wrapped inside through quality inspection.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. the transparent silica gel bead with the color dots wrapped inside is characterized by comprising the following components in parts by weight: 95.5-98.0 parts of silica gel, 0.5-3.0 parts of colored gravel particles and 1.0-2.0 parts of vulcanizing agent.
2. The transparent silica gel bead with the color dots wrapped inside is characterized in that the colored gravel particles are prepared by mixing, cutting, vulcanizing and separating 96-98.5 parts by weight of silica gel, 0.5-2.0 parts by weight of silica gel color master batch and 1.0-2.0 parts by weight of vulcanizing agent.
3. the transparent silica gel bead with the color dots wrapped inside according to claim 1 or 2, wherein: the average particle size of the colored gravel particles is 0.5-5 mm.
4. The transparent silica gel bead with the color dots wrapped inside according to claim 1 or 2, wherein: the shape of the colored gravel particles can be one or more of spheres, cubes, cylinders, cuboids, cones and other geometric or irregular shapes.
5. The transparent silica gel bead with the color dots wrapped inside according to claim 1 or 2, wherein the preparation method of the colored gravel particles comprises the following steps:
S1, mixing: putting 96-98.5 parts by weight of silica gel, 0.5-2.0 parts by weight of silica gel color master batch and 1.0-2.0 parts by weight of vulcanizing agent into a rubber mixing mill for mixing to obtain a first mixture;
S2, cutting: cutting the first mixture mixed in the step S1 into pieces with the average particle size of 0.5-5 mm, and shearing;
s3, vulcanizing: putting the first mixture sheared in the step S2 into a mold, and carrying out primary vulcanization through an oil pressure flat plate forming machine to achieve compression molding;
s4, separation: and (4) separating the first mixture molded in the step S3 by a stamping machine, screening, and then testing by quality inspection to obtain the colored gravel particles.
6. the transparent silica gel bead with the color dots wrapped inside according to claim 5, wherein: the mixing temperature in the step S1 is 10-60 ℃, and the mixing time is 5-40 min.
7. The transparent silica gel bead with the color dots wrapped inside according to claim 5, wherein: the vulcanization temperature in the step S3 is 100-200 ℃, and the vulcanization time is 15-500S.
8. the method for preparing the transparent silica gel beads with the color dots wrapped inside according to the claims 1 to 7, which comprises the following steps:
s1, mixing: mixing 95.5-98.0 parts by weight of silica gel, 0.5-3.0 parts by weight of colored sand particles and 1.0-2.0 parts by weight of vulcanizing agent at 10-60 ℃ for 5-40 min by a rubber mixing mill to uniformly mix the colored sand particles to obtain a second mixture;
s2, cutting: carrying out sheet cutting on the second mixture mixed in the step S1;
s3, primary vulcanization: putting the second mixture cut in the step S2 into a mold, and carrying out primary vulcanization for 15-500S at 110-220 ℃ by using an oil pressure flat plate forming machine to achieve compression molding;
s4, secondary vulcanization: and (5) putting the primarily vulcanized second mixture in the step (S3) into an oven for secondary vulcanization, and finally obtaining the transparent silica gel beads with the color dots wrapped inside through quality inspection.
9. the method for preparing the transparent silica gel bead with the color dots wrapped inside according to claim 8, wherein the method comprises the following steps: the secondary vulcanization temperature in the step S4 is 120-220 ℃, and the secondary vulcanization time is 30-240 min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113752440A (en) * | 2021-08-02 | 2021-12-07 | 广东方振新材料精密组件有限公司 | Silica gel product and preparation method thereof |
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2019
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Application publication date: 20191213 |
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