CN113174066A - Preparation method of composite hollow ball - Google Patents
Preparation method of composite hollow ball Download PDFInfo
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- CN113174066A CN113174066A CN202110451620.7A CN202110451620A CN113174066A CN 113174066 A CN113174066 A CN 113174066A CN 202110451620 A CN202110451620 A CN 202110451620A CN 113174066 A CN113174066 A CN 113174066A
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- 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
- C08J3/12—Powdering or granulating
- C08J3/126—Polymer particles coated by polymer, e.g. core shell structures
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- 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
- C08J3/12—Powdering or granulating
-
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/22—Polyalkenes, e.g. polystyrene
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/32—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming a linkage containing silicon in the main chain of the macromolecule
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
-
- 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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Paints Or Removers (AREA)
- Manufacturing Of Micro-Capsules (AREA)
- Silicon Compounds (AREA)
Abstract
The invention belongs to the technical field of thermal paper, and particularly relates to a preparation method of a composite hollow ball. The invention solves the problems of low heat retention rate and poor pressure bearing capacity of the traditional hollow ball, utilizes the phenyl silicone resin of the silica structure as a frame, greatly improves the pressure bearing performance of the hollow ball under the condition of ensuring that the hollow rate is not changed, and simultaneously has good reflection and heat insulation effects by the silica structure.
Description
Technical Field
The invention belongs to the technical field of thermal paper, and particularly relates to a preparation method of a composite hollow ball.
Background
The thermal paper is widely applied to industries such as food, logistics, lottery, medical treatment and the like at home. The printing principle of thermal paper is that leuco dyes are converted into colored dyes by the transfer of heat. In order to fully utilize the heat, the thermal paper uses a heat insulating material to ensure effective utilization of the heat, thereby ensuring printing fineness. At present, the bottom layer adopts a common hollow ball heat insulation material for heat utilization, but the heat retention rate of the conventional hollow ball is low, the pressure resistance is poor, and the quality of the thermal paper is reduced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a composite hollow ball, which solves the problems of low heat retention rate and poor pressure bearing capacity of the conventional hollow ball.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
a composite hollow ball is prepared from the internal frame of organosilicon resin and polypropylene as coating material through preparing the composite hollow ball with hollow rate of 40-60%.
The particle size of the composite hollow sphere is 30-50 μm.
The preparation method of the composite hollow sphere comprises the following steps:
step 1, adding phenyl trichlorosilane into toluene, uniformly stirring, and then adding polypropylene for constant-temperature ultrasonic dispersion to form a mixed solution; the concentration of the phenyltrichlorosilane in the toluene is 100-200g/L, the stirring speed is 1000-2000r/min, the adding amount of the polypropylene is 10-20% of that of the phenyltrichlorosilane, the temperature of the constant-temperature ultrasonic dispersion is 60-80 ℃, and the ultrasonic frequency is 50-80 kHz;
step 2, adding the mixed solution into a mold for constant-temperature granulation to obtain microsphere particles, then injecting ethyl cellulose ethanol solution into the microsphere particles, and drying at constant temperature to form core-shell microsphere particles; the temperature of the constant-temperature granulation is 70-80 ℃, the pressure is 0.12-0.14MPa, the microsphere particles are sticky, and the particle size is 18-35 mu m; the mass ratio of ethyl cellulose to ethanol in the ethyl cellulose ethanol solution is 3-5:1, the injection amount is 40-60% of the mass of the microsphere particles, and the constant temperature drying temperature is 120-130 ℃;
step 3, standing the shell-core microsphere particles in a reaction kettle at constant temperature for reacting for 1-3h, taking out the shell-core microsphere particles, and putting the shell-core microsphere particles into an illumination reaction kettle for illuminating for 2-4h to obtain prefabricated hollow microspheres; the temperature of the constant temperature standing is 100-110 ℃, and the reaction kettle is filled with water vapor and nitrogenThe volume ratio of water vapor is 30-40%, and the intensity of the irradiation is 20-40W/cm2The temperature is 120-150 ℃;
step 4, uniformly spraying the polypropylene toluene liquid on the surface of the prefabricated hollow microsphere to form a surface liquid film, standing for 20-30min, and drying to obtain a composite hollow sphere; the polypropylene toluene solution contains polypropylene 50-80g/L and spray amount 0.5-0.9mL/cm2The temperature of the standing is 60-80 ℃, the pressure is 0.2-0.4MPa, and the temperature of the drying is 130-140 ℃.
From the above description, it can be seen that the present invention has the following advantages:
1. the invention solves the problems of low heat retention rate and poor pressure bearing capacity of the traditional hollow ball, utilizes the phenyl silicone resin of the silica structure as a frame, greatly improves the pressure bearing performance of the hollow ball under the condition of ensuring that the hollow rate is not changed, and simultaneously has good reflection and heat insulation effects by the silica structure.
2. According to the invention, the high permeability of the silica structure and the photolysis property of the ethyl cellulose are utilized to achieve a stable hollow structure, and meanwhile, the content controllability of the ethyl cellulose is realized to realize the controllability of the hollow structure.
Detailed Description
The present invention is described in detail with reference to examples, but the present invention is not limited to the claims.
Example 1
A composite hollow ball is formed by taking an organic silicon resin inner frame and polypropylene as a coating material; the preparation method comprises the following steps:
step 1, adding phenyl trichlorosilane into 1L of toluene, uniformly stirring, and then adding polypropylene for constant-temperature ultrasonic dispersion to form a mixed solution; the concentration of the phenyltrichlorosilane in the toluene is 100g/L, the stirring speed is 1000r/min, the adding amount of the polypropylene is 10 percent of that of the phenyltrichlorosilane, the temperature of the constant-temperature ultrasonic dispersion is 60 ℃, and the ultrasonic frequency is 50 kHz;
step 2, adding the mixed solution into a mold for constant-temperature granulation to obtain microsphere particles, then injecting ethyl cellulose ethanol solution into the microsphere particles, and drying at constant temperature to form core-shell microsphere particles; the temperature of the constant-temperature granulation is 70 ℃, the pressure is 0.12MPa, the microsphere particles are sticky, and the particle size is 18 mu m; the mass ratio of ethyl cellulose to ethanol in the ethyl cellulose ethanol solution is 3:1, the injection amount is 40% of the mass of the microsphere particles, and the constant-temperature drying temperature is 120 ℃;
step 3, standing the shell-core microsphere particles in a reaction kettle at constant temperature for reacting for 1-3h, taking out the shell-core microsphere particles, and putting the shell-core microsphere particles into an illumination reaction kettle for illuminating for 2-4h to obtain prefabricated hollow microspheres; the constant temperature standing temperature is 100 ℃, the reaction kettle is filled with mixed gas of water vapor and nitrogen, the volume ratio of the water vapor is 30%, and the irradiation intensity is 20W/cm2The temperature is 120 ℃;
step 4, uniformly spraying polypropylene toluene liquid on the surface of the prefabricated hollow microsphere to form a surface liquid film, standing for 20min, and drying to obtain a composite hollow sphere; the polypropylene toluene solution has a polypropylene concentration of 50g/L and a spray amount of 0.5mL/cm2The standing temperature is 60 ℃, the pressure is 0.2MPa, and the drying temperature is 130 ℃.
The particle diameter of the hollow sphere prepared in the embodiment is 30 μm, the hollow rate is 60%, when the reflecting layer of the thermal paper is laid by the composite hollow sphere, the heat retention rate is 55%, and the pressure-bearing pressure is more than 0.9 MPa.
Example 2
A composite hollow ball is formed by taking an organic silicon resin inner frame and polypropylene as a coating material; the preparation method comprises the following steps:
step 1, adding phenyl trichlorosilane into 1L of toluene, uniformly stirring, and then adding polypropylene for constant-temperature ultrasonic dispersion to form a mixed solution; the concentration of the phenyl trichlorosilane in the toluene is 200g/L, the stirring speed is 2000r/min, the adding amount of the polypropylene is 20 percent of that of the phenyl trichlorosilane, the temperature of the constant-temperature ultrasonic dispersion is 80 ℃, and the ultrasonic frequency is 80 kHz;
step 2, adding the mixed solution into a mold for constant-temperature granulation to obtain microsphere particles, then injecting ethyl cellulose ethanol solution into the microsphere particles, and drying at constant temperature to form core-shell microsphere particles; the temperature of the constant-temperature granulation is 80 ℃, the pressure is 0.14MPa, the microsphere particles are sticky, and the particle size is 35 mu m; the mass ratio of ethyl cellulose to ethanol in the ethyl cellulose ethanol solution is 5:1, the injection amount is 60 percent of the mass of the microsphere particles, and the constant-temperature drying temperature is 130 ℃;
step 3, standing the shell-core microsphere particles in a reaction kettle at constant temperature for reacting for 3 hours, taking out the shell-core microsphere particles, and putting the shell-core microsphere particles into an illumination reaction kettle for illuminating for 4 hours to obtain prefabricated hollow microspheres; the constant temperature standing temperature is 110 ℃, the reaction kettle is filled with mixed gas of water vapor and nitrogen, the volume ratio of the water vapor is 30-40%, and the irradiation intensity is 40W/cm2The temperature is 150 ℃;
step 4, uniformly spraying polypropylene toluene liquid on the surface of the prefabricated hollow microsphere to form a surface liquid film, standing for 30min, and drying to obtain a composite hollow sphere; the polypropylene toluene solution has a polypropylene concentration of 80g/L and a spray amount of 0.9mL/cm2The temperature of the standing is 80 ℃, the pressure is 0.4MPa, and the temperature of the drying is 140 ℃.
The particle diameter of the hollow sphere prepared in the embodiment is 50 μm, the hollow rate is 50%, when the reflecting layer of the thermal paper is laid by the composite hollow sphere, the heat retention rate is 59%, and the bearing pressure is more than 0.9 MPa.
Example 3
A composite hollow ball is formed by taking an organic silicon resin inner frame and polypropylene as a coating material; the preparation method comprises the following steps:
step 1, adding phenyl trichlorosilane into 1L of toluene, uniformly stirring, and then adding polypropylene for constant-temperature ultrasonic dispersion to form a mixed solution; the concentration of the phenyltrichlorosilane in the toluene is 150g/L, the stirring speed is 1500r/min, the adding amount of the polypropylene is 15 percent of that of the phenyltrichlorosilane, the temperature of constant-temperature ultrasonic dispersion is 80 ℃, and the ultrasonic frequency is 70 kHz;
step 2, adding the mixed solution into a mold for constant-temperature granulation to obtain microsphere particles, then injecting ethyl cellulose ethanol solution into the microsphere particles, and drying at constant temperature to form core-shell microsphere particles; the temperature of the constant-temperature granulation is 75 ℃, the pressure is 0.13MPa, the microsphere particles are sticky, and the particle size is 24 mu m; the mass ratio of ethyl cellulose to ethanol in the ethyl cellulose ethanol solution is 4:1, the injection amount is 55% of the mass of the microsphere particles, and the constant-temperature drying temperature is 125 ℃;
step 3, standing the shell-core microsphere particles in a reaction kettle at constant temperature for reacting for 4 hours, taking out the shell-core microsphere particles, putting the shell-core microsphere particles into an illumination reaction kettle, and illuminating for 3 hours to obtain prefabricated hollow microspheres; the constant temperature standing temperature is 105 ℃, the reaction kettle is filled with mixed gas of water vapor and nitrogen, the volume ratio of the water vapor is 35%, and the irradiation intensity is 30W/cm2At a temperature of 140 ℃;
step 4, uniformly spraying the polypropylene toluene liquid on the surface of the prefabricated hollow microsphere to form a surface liquid film, standing for 25min, and drying to obtain a composite hollow sphere; the polypropylene toluene solution has a polypropylene concentration of 70g/L and a spray amount of 0.7mL/cm2The temperature of the standing is 70 ℃, the pressure is 0.3MPa, and the temperature of the drying is 135 ℃.
The particle diameter of the hollow sphere prepared in the embodiment is 40 μm, the hollow rate is 60%, when the reflecting layer of the thermal paper is paved by the composite hollow sphere, the heat retention rate is 58%, and the pressure-bearing pressure is more than 0.9 MPa.
In summary, the invention has the following advantages:
1. the invention solves the problems of low heat retention rate and poor pressure bearing capacity of the traditional hollow ball, utilizes the phenyl silicone resin of the silica structure as a frame, greatly improves the pressure bearing performance of the hollow ball under the condition of ensuring that the hollow rate is not changed, and simultaneously has good reflection and heat insulation effects by the silica structure.
2. According to the invention, the high permeability of the silica structure and the photolysis property of the ethyl cellulose are utilized to achieve a stable hollow structure, and meanwhile, the content controllability of the ethyl cellulose is realized to realize the controllability of the hollow structure.
It should be understood that the detailed description of the invention is merely illustrative of the invention and is not intended to limit the invention to the specific embodiments described. It will be appreciated by those skilled in the art that the present invention may be modified or substituted equally as well to achieve the same technical result; as long as the use requirements are met, the method is within the protection scope of the invention.
Claims (9)
1. A composite hollow ball is characterized in that: the composite hollow ball is formed by taking the inner frame of the organic silicon resin and taking polypropylene as a coating material.
2. The composite hollow sphere of claim 1, wherein: the composite hollow sphere has a hollow rate of 40-60%.
3. The composite hollow sphere of claim 1, wherein: the particle size of the composite hollow sphere is 30-50 μm.
4. The composite hollow sphere of claim 1, wherein: the preparation method of the composite hollow sphere comprises the following steps:
step 1, adding phenyl trichlorosilane into toluene, uniformly stirring, and then adding polypropylene for constant-temperature ultrasonic dispersion to form a mixed solution;
step 2, adding the mixed solution into a mold for constant-temperature granulation to obtain microsphere particles, then injecting ethyl cellulose ethanol solution into the microsphere particles, and drying at constant temperature to form core-shell microsphere particles;
step 3, standing the shell-core microsphere particles in a reaction kettle at constant temperature for reacting for 1-3h, taking out the shell-core microsphere particles, and putting the shell-core microsphere particles into an illumination reaction kettle for illuminating for 2-4h to obtain prefabricated hollow microspheres;
and 4, uniformly spraying the polypropylene toluene liquid on the surface of the prefabricated hollow microsphere to form a surface liquid film, standing for 20-30min, and drying to obtain the composite hollow sphere.
5. The composite hollow sphere of claim 4, wherein: the concentration of the phenyltrichlorosilane in the toluene in the step 1 is 100-200g/L, the stirring speed is 1000-2000r/min, the adding amount of the polypropylene is 10-20% of that of the phenyltrichlorosilane, the temperature of the constant-temperature ultrasonic dispersion is 60-80 ℃, and the ultrasonic frequency is 50-80 kHz.
6. The composite hollow sphere of claim 4, wherein: the temperature of the constant-temperature granulation in the step 2 is 70-80 ℃, the pressure is 0.12-0.14MPa, the microsphere particles are sticky, and the particle size is 18-35 mu m.
7. The composite hollow sphere of claim 4, wherein: the mass ratio of the ethyl cellulose to the ethanol in the ethyl cellulose ethanol solution in the step 2 is 3-5:1, the injection amount is 40-60% of the mass of the microsphere particles, and the constant temperature drying temperature is 120-130 ℃.
8. The composite hollow sphere of claim 4, wherein: the temperature of the constant temperature standing in the step 3 is 100-110 ℃, the reaction kettle is filled with mixed gas of water vapor and nitrogen, the volume ratio of the water vapor is 30-40%, and the irradiation intensity is 20-40W/cm2The temperature is 120-150 ℃.
9. The composite hollow sphere of claim 4, wherein: the concentration of the polypropylene in the polypropylene toluene liquid in the step 4 is 50-80g/L, and the spraying amount is 0.5-0.9mL/cm2The temperature of the standing is 60-80 ℃, the pressure is 0.2-0.4MPa, and the temperature of the drying is 130-140 ℃.
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| CN202110451620.7A CN113174066A (en) | 2021-04-26 | 2021-04-26 | Preparation method of composite hollow ball |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20100048394A1 (en) * | 2006-07-12 | 2010-02-25 | Papierfabrik August Koehler Ag | Heat-sensitive recording material |
| CN102616046A (en) * | 2012-04-16 | 2012-08-01 | 金华盛纸业（苏州工业园区）有限公司 | Thermo-sensitive paper and preparing method thereof |
| CN107254111A (en) * | 2017-05-27 | 2017-10-17 | 常州可赛成功塑胶材料有限公司 | A kind of polyolefin low VOC lubricants and preparation method thereof for the hud typed inorganic particle of self assembly that adulterates |
| CN110157315A (en) * | 2019-05-23 | 2019-08-23 | 南京珈时新材料科技有限公司 | A kind of insulating moulding coating and its application containing hollow silica microsphere |
| US20200283959A1 (en) * | 2018-10-01 | 2020-09-10 | Nigel J. Flynn | Re-pulpable thermally insulated paper products and methods of making and using the same |
-
2021
- 2021-04-26 CN CN202110451620.7A patent/CN113174066A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100048394A1 (en) * | 2006-07-12 | 2010-02-25 | Papierfabrik August Koehler Ag | Heat-sensitive recording material |
| CN102616046A (en) * | 2012-04-16 | 2012-08-01 | 金华盛纸业（苏州工业园区）有限公司 | Thermo-sensitive paper and preparing method thereof |
| CN107254111A (en) * | 2017-05-27 | 2017-10-17 | 常州可赛成功塑胶材料有限公司 | A kind of polyolefin low VOC lubricants and preparation method thereof for the hud typed inorganic particle of self assembly that adulterates |
| US20200283959A1 (en) * | 2018-10-01 | 2020-09-10 | Nigel J. Flynn | Re-pulpable thermally insulated paper products and methods of making and using the same |
| CN110157315A (en) * | 2019-05-23 | 2019-08-23 | 南京珈时新材料科技有限公司 | A kind of insulating moulding coating and its application containing hollow silica microsphere |
Non-Patent Citations (1)
| Title |
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| 吴森纪: "《有机硅及其应用》", 科学技术文献出版社, pages: 212 * |
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