CN112297558A - Preparation method of antistatic silica gel - Google Patents
Preparation method of antistatic silica gel Download PDFInfo
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- CN112297558A CN112297558A CN202011194576.8A CN202011194576A CN112297558A CN 112297558 A CN112297558 A CN 112297558A CN 202011194576 A CN202011194576 A CN 202011194576A CN 112297558 A CN112297558 A CN 112297558A
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D109/00—Coating compositions based on homopolymers or copolymers of conjugated diene hydrocarbons
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on 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; Coating compositions based on derivatives of such polymers
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on 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; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
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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
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- C08K2201/001—Conductive additives
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- 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
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- C08K2201/011—Nanostructured additives
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention relates to the technical field of static prevention, and particularly discloses a preparation method of static-prevention silica gel, which comprises the following operation steps: preparing a substrate layer, coating an adhesive on the surface of a PET film, drying to form an adhesive layer, and then carrying out hot-pressing compounding on the PET film and the PE film to obtain the substrate layer; step two, preparing an antistatic liquid; step three, preparing silica gel; step four, coating silica gel; fifthly, spraying antistatic liquid; step six, curing, namely drying and curing by adopting a multi-stage drying tunnel, wherein the heating temperature of the primary drying tunnel is 100-120 ℃, the heating temperature of the secondary drying tunnel is 140-160 ℃, the heating temperature of the tertiary drying tunnel is 100-120 ℃, and each stage of drying tunnel is heated and dried for 5-10 min; the antistatic liquid comprises, by weight, 5-40% of a conductive material, 10-30% of a silicon material and 30-85% of a solvent. The invention has simple process, one-time coating, excellent antistatic performance and surface resistance up to 106～9Omega, has higher economic benefit and social benefit.
Description
Technical Field
The invention relates to the technical field of static prevention, in particular to a preparation method of static-proof silica gel.
Background
The electrostatic phenomenon is visible everywhere in daily life, the electrostatic harm is great, and the first harm comes from the interaction of charged bodies; the second major hazard is the possibility of explosion due to the electrostatic spark igniting some flammable objects; electrostatic hazards arise from electrical power and electrostatic sparks, the most severe of which causes fires and explosions of combustible materials; the silica gel protective film is difficult to perform antistatic treatment at present, and two schemes are mainly adopted at present, wherein one scheme is to add an antistatic agent into the silica gel, the antistatic agent has poor conductivity, and the general surface resistance can be best used as 1010Omega; the other scheme is that an anti-static bottom coat is made on the protective film, then silica gel is coated, two times of coating are needed, the anti-static performance is difficult to meet the requirement, and the anti-static performance reaches 109Omega is also difficult.
Under the existing technical conditions, the problem that the antistatic performance of a silica gel protective film is difficult to achieve is solved, or the antistatic value is poor, the use requirement is difficult to achieve, or the process is complicated, secondary coating is carried out, and the efficiency is low, so that the preparation method of the antistatic silica gel is provided.
Disclosure of Invention
The invention aims to provide a preparation method of antistatic silica gel, which solves the problems that the antistatic value is poor, the use requirement is difficult to meet, or the process is complicated, secondary coating is performed, and the efficiency is low in the traditional technology.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a preparation method of antistatic silica gel is characterized by comprising the following steps: the method comprises the following operation steps:
preparing a substrate layer, coating an adhesive on the surface of a PET film, drying to form an adhesive layer, and then carrying out hot-pressing compounding on the PET film and the PE film to obtain the substrate layer;
step two, preparing an antistatic liquid;
step three, preparing silica gel, namely weighing methyl vinyl silicone rubber, polyisoprene rubber, silicone resin, vinyl silicone oil, hydrogen-containing silicone oil, nano graphite powder, potassium monododecyl phosphate, toluene and ethyl acetate according to a proportion, then uniformly mixing and stirring for 30-40 min, adding methyl butynol and a platinum catalyst, and continuously stirring for 5-10 min to prepare organic silicon;
step four, coating silica gel;
fifthly, spraying antistatic liquid;
step six, curing, namely drying and curing by adopting a multi-stage drying tunnel, wherein the heating temperature of the primary drying tunnel is 100-120 ℃, the heating temperature of the secondary drying tunnel is 140-160 ℃, the heating temperature of the tertiary drying tunnel is 100-120 ℃, and each stage of drying tunnel is heated and dried for 5-10 min;
the antistatic liquid comprises, by weight, 5-40% of a conductive material, 10-30% of a silicon material and 30-85% of a solvent.
Preferably, the conductive material is preferably 10-35%, more preferably 15-30%, the silicon material is preferably 15-25%, more preferably 15-20%, and the solvent is preferably 40-75%, more preferably 50-70%.
Preferably, the conductive material may be a carbon nanotube dispersion, which may be a multi-walled carbon nanotube dispersion, or a single-walled carbon nanotube dispersion, a polythiophene dispersion, such as poly (3, 4-ethylenedioxythiophene)/polystyrene sulfonic acid, a polyaniline dispersion, and the like, which are the most common.
Preferably, the silicon-based material may be a silane coupling agent such as common 3-triethoxysilyl-1-propylamine, gamma-glycidoxypropyltrimethoxysilane, gamma-methacryloxypropyltrimethoxysilane, or the like, a polysilane such as polyether-modified polymethylsiloxane, hydrophilic silicone oil grafted with a hydrophilic group, a silicon-based surfactant such as a german BYK-349 aqueous silicon leveling agent, or the like.
Preferably, the solvent may be water, alcohol or a mixture of water and alcohol, and may be a polyhydric alcohol such as methanol, ethanol, isopropanol, ethylene glycol, glycerol, etc.
Preferably, in the first step, the conductive material, the silicon material and the solvent are sequentially put into a high-speed dispersion tank and uniformly stirred, so that the antistatic liquid can be obtained.
Preferably, the step three spraying antistatic liquid is after the step two coating the silica gel and before the silica gel is not cured.
The invention has the beneficial effects that: the invention has simple process, one-time coating, excellent antistatic performance and higher economic and social benefits.
Drawings
FIG. 1 is a flow chart of a method for preparing an antistatic silica gel according to the present invention;
Detailed Description
Referring to fig. 1, the following describes a specific embodiment of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example one
The implementation method comprises the following specific steps:
1) 5% of conductive material, 30% of silicon material and 65% of solvent are put into a high-speed dispersion tank and uniformly stirred to prepare antistatic liquid for later use;
2) coating a layer of silica gel on the surface of the protective film, and immediately spraying the antistatic liquid prepared in the step 1) on the surface of the silica gel to form a coating;
3) testing the surface resistance of the protective film by using a surface resistance tester to obtain the surface resistance of 109Ω。
Example two
The implementation method comprises the following specific steps:
1) putting 10% of conductive material, 25% of silicon material and 65% of solvent into a high-speed dispersion tank, and uniformly stirring to prepare antistatic liquid for later use;
2) coating a layer of silica gel on the surface of the protective film, and immediately spraying the antistatic liquid prepared in the step 1) on the surface of the silica gel to form a coating;
3) testing the surface resistance of the protective film by using a surface resistance tester to obtain the surface resistance of 108Ω。
EXAMPLE III
The implementation method comprises the following specific steps:
1) putting 15% of conductive material, 20% of silicon material and 65% of solvent into a high-speed dispersion tank, and uniformly stirring to prepare antistatic liquid for later use;
2) coating a layer of silica gel on the surface of the protective film, and immediately spraying the antistatic liquid prepared in the step 1) on the surface of the silica gel to form a coating;
3) testing the surface resistance of the protective film by using a surface resistance tester to obtain the surface resistance of 107Ω。
Example four
The implementation method comprises the following specific steps:
1) putting 30% of conductive material, 15% of silicon material and 55% of solvent into a high-speed dispersion tank, and uniformly stirring to prepare antistatic liquid for later use;
2) coating a layer of silica gel on the surface of the protective film, and immediately spraying the antistatic liquid prepared in the step 1) on the surface of the silica gel to form a coating;
3) testing the surface resistance of the protective film by using a surface resistance tester to obtain the surface resistance of 106Ω。
EXAMPLE five
The implementation method comprises the following specific steps:
1) putting 35% of conductive material, 15% of silicon material and 50% of solvent into a high-speed dispersion tank, and uniformly stirring to prepare antistatic liquid for later use;
2) coating a layer of silica gel on the surface of the protective film, and immediately spraying the antistatic liquid prepared in the step 1) on the surface of the silica gel to form a coating;
3) testing the surface resistance of the protective film by using a surface resistance tester to obtain the surface resistance of 106Ω。
EXAMPLE six
The implementation method comprises the following specific steps:
1) putting 40% of conductive material, 10% of silicon material and 50% of solvent into a high-speed dispersion tank, and uniformly stirring to prepare antistatic liquid for later use;
2) coating a layer of silica gel on the surface of the protective film, and immediately spraying the antistatic liquid prepared in the step 1) on the surface of the silica gel to form a coating;
3) testing the surface resistance of the protective film by using a surface resistance tester to obtain the surface resistance of 106Ω。
EXAMPLE seven
The implementation method comprises the following specific steps:
1) putting 15% of conductive material, 15% of silicon material and 70% of solvent into a high-speed dispersion tank, and uniformly stirring to prepare antistatic liquid for later use;
2) coating a layer of silica gel on the surface of the protective film, and immediately spraying the antistatic liquid prepared in the step 1) on the surface of the silica gel to form a coating;
3) testing the surface resistance of the protective film by using a surface resistance tester to obtain the surface resistance of 107Ω。
Example eight
The implementation method comprises the following specific steps:
1) putting 10% of conductive material, 15% of silicon material and 75% of solvent into a high-speed dispersion tank, and uniformly stirring to prepare antistatic liquid for later use;
2) coating a layer of silica gel on the surface of the protective film, and immediately spraying the antistatic liquid prepared in the step 1) on the surface of the silica gel to form a coating;
3) testing the surface resistance of the protective film by using a surface resistance tester to obtain the surface resistance of 107Ω。
Example nine
The implementation method comprises the following specific steps:
1) putting 5% of conductive material, 10% of silicon material and 85% of solvent into a high-speed dispersion tank, and uniformly stirring to prepare antistatic liquid for later use;
2) coating a layer of silica gel on the surface of the protective film, and immediately spraying the antistatic liquid prepared in the step 1) on the surface of the silica gel to form a coating;
3) testing the surface resistance of the protective film by using a surface resistance tester to obtain the surface resistance of 108Ω。
Through the above examples, the surface of the invention has the advantages of simple process, one-time coating, excellent antistatic performance and surface resistance up to 106～9Ω。
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. A preparation method of antistatic silica gel is characterized by comprising the following steps: the method comprises the following operation steps:
preparing a substrate layer, coating an adhesive on the surface of a PET film, drying to form an adhesive layer, and then carrying out hot-pressing compounding on the PET film and the PE film to obtain the substrate layer;
step two, preparing an antistatic liquid;
step three, preparing silica gel, namely weighing methyl vinyl silicone rubber, polyisoprene rubber, silicone resin, vinyl silicone oil, hydrogen-containing silicone oil, nano graphite powder, potassium monododecyl phosphate, toluene and ethyl acetate according to a proportion, then uniformly mixing and stirring for 30-40 min, adding methyl butynol and a platinum catalyst, and continuously stirring for 5-10 min to prepare organic silicon;
step four, coating silica gel;
fifthly, spraying antistatic liquid;
step six, curing, namely drying and curing by adopting a multi-stage drying tunnel, wherein the heating temperature of the primary drying tunnel is 100-120 ℃, the heating temperature of the secondary drying tunnel is 140-160 ℃, the heating temperature of the tertiary drying tunnel is 100-120 ℃, and each stage of drying tunnel is heated and dried for 5-10 min;
the antistatic liquid comprises, by weight, 5-40% of a conductive material, 10-30% of a silicon material and 30-85% of a solvent.
2. The method for preparing antistatic silica gel according to claim 1, wherein the method comprises the following steps: the conductive material is preferably 10-35%, more preferably 15-30%, the silicon material is preferably 15-25%, more preferably 15-20%, and the solvent is preferably 40-75%, more preferably 50-70%.
3. The method for preparing antistatic silica gel according to claim 1, wherein the method comprises the following steps: the conductive material may be a carbon nanotube dispersion, a multi-walled carbon nanotube dispersion, a single-walled carbon nanotube dispersion, a polythiophene dispersion, such as the most common poly (3, 4-ethylenedioxythiophene)/polystyrene sulfonic acid, polyaniline dispersion, or the like.
4. The method for preparing antistatic silica gel according to claim 1, wherein the method comprises the following steps: the silicon-based material may be, for example, a silane coupling agent such as common 3-triethoxysilyl-1-propylamine, gamma-glycidoxypropyltrimethoxysilane, gamma-methacryloxypropyltrimethoxysilane, etc., a polysilane such as polyether-modified polymethylsiloxane, hydrophilic silicone oil grafted with a hydrophilic group, a silicon-based surfactant such as a Germany BickBYK-349 aqueous silicon leveling agent, etc.
5. The method for preparing antistatic silica gel according to claim 1, wherein the method comprises the following steps: the solvent may be water, alcohol or mixture of water and alcohol, and may be polyalcohol such as methanol, ethanol, isopropanol, ethylene glycol, glycerol, etc.
6. The method for preparing antistatic silica gel according to claim 1, wherein the method comprises the following steps: and in the first step, the conductive material, the silicon material and the solvent are sequentially put into a high-speed dispersion tank and uniformly stirred, so that the antistatic liquid can be obtained.
7. The method for preparing antistatic silica gel according to claim 1, wherein the method comprises the following steps: the spraying antistatic liquid in the fifth step is after the silica gel is coated in the fourth step and before the silica gel is not cured.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113528009A (en) * | 2021-08-04 | 2021-10-22 | 苏州纳普乐思纳米材料有限公司 | Conductive and antistatic liquid and preparation method thereof |
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| CN110845943A (en) * | 2019-10-30 | 2020-02-28 | 江西铜业技术研究院有限公司 | Water-based transparent antistatic coating and preparation method thereof |
| CN111763471A (en) * | 2020-07-21 | 2020-10-13 | 苏州特普乐新材料有限公司 | Dustproof, antistatic and skin-feel paint and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113528009A (en) * | 2021-08-04 | 2021-10-22 | 苏州纳普乐思纳米材料有限公司 | Conductive and antistatic liquid and preparation method thereof |
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