CN105670226A - Epoxy resin-based laminate with antistatic property and preparation method thereof - Google Patents
Epoxy resin-based laminate with antistatic property and preparation method thereof Download PDFInfo
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- CN105670226A CN105670226A CN201610113883.6A CN201610113883A CN105670226A CN 105670226 A CN105670226 A CN 105670226A CN 201610113883 A CN201610113883 A CN 201610113883A CN 105670226 A CN105670226 A CN 105670226A
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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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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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
- 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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- 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
- B32B37/06—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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
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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
- B32B2250/00—Layers arrangement
- B32B2250/20—All layers being fibrous or filamentary
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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
- B32B2255/02—Coating on the layer surface on fibrous or filamentary 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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- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/21—Anti-static
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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
- B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
- B32B2309/02—Temperature
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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
- B32B2605/00—Vehicles
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to the technical field of fiber-reinforced polymer laminated materials, in particular to an epoxy resin-based laminate with antistatic property and a preparation method thereof. The laminate consists of matrix resin, a glass fabric and modifier, the matrix resin is liquid epoxy resin, the glass fabric is a universal alkali-free glass fabric, and the modifier is micro-nano semiconducting oxide. The preparation method of the epoxy resin-based laminate with the antistatic property includes the following steps: coupling agent is adopted to preprocess the surface of the modifier, the epoxy resin is sufficiently mixed with the modifier after being diluted, and coupling agent is adopted to be sprayed on the surface of the glass fabric; the glass fabric is glued and precured; the glued glass fabric is cut, boarded and laminated, and is then heated, laminated and cured to be shaped. The invention mainly utilizes the nonlinear conductivity property of the novel material to effectively prevent the accumulation of electrostatic charges injected into the material and release the dangerous electrostatic charges in the form of unharmful micropulse conductive current, effectively preventing the harm of generated electrostatic discharge on electronic circuits.
Description
Technical field
The present invention relates to fibrous reinforcement polymer laminate technical field, especially a kind of epoxy resin base veneer sheet with antistatic property and preparation method thereof.
Background technology
Polymeric media is the material that spacecraft uses in a large number, it is mainly used as electric power, the heat control material of electrical insulating material and satellite surface, epoxy laminate then acts not only as electronic circuit pcb board and Electric insulation material in the cabin that Spacecraft Electronic circuit board is indispensable, spacecraft can be subject to various High energy particles Radiation in space environment running, particularly high energy electron, its energy having is enough to penetrate satellite eyelid covering and enters in cabin and be injected into inside pcb board and other dielectric, electrostatic charge continuous deposition in medium can form significantly high electrostatic field, typical polymeric media and glass cloth stiffener lamination material thereof are respectively provided with high specific insulation, at vacuum of space environment, there is high surface resistivity too, cause that in medium, electrostatic charge is constantly gathered and discharged slowly, finally necessarily cause polymeric media partial discharge phenomenon, even directly result in organic dielectric material partial burnt-out, the high energy pulse that electric discharge produces then can be coupled by circuit or Space Coupling causes sensitive electronic circuit misoperation, even directly result in electronic component time serious to burn, satellite lost efficacy, it is used in vacuum, or the electronic circuit under extreme drying regime also can run into above-mentioned Similar Problems.
Summary of the invention
In order to overcome existing polymeric media and glass cloth stiffener lamination material thereof to be respectively provided with the deficiency of high specific insulation, the invention provides a kind of epoxy resin base veneer sheet with antistatic property and preparation method thereof.
The technical solution adopted for the present invention to solve the technical problems is: a kind of epoxy resin base veneer sheet with antistatic property, laminate is formed by matrix resin, glass cloth and modifying agent lamination, and in laminate, the mass percent of each component is: epoxy resin 40 ~ 60%, glass cloth 40 ~ 60%, modifying agent 0.5 ~ 30%.
Further, it is liquid epoxies including matrix resin.
Further, it is alkali-free glass cloth including glass cloth.
Further, it is micro/nano level semiconducting oxides including modifying agent.
Further, including the mass percent of laminate each several part it is: epoxy resin 45 ~ 55%, glass cloth 45 ~ 55%, modifying agent 1 ~ 10%.
Further, including the mass percent of laminate each several part it is: epoxy resin 48%, glass cloth 50%, modifying agent 5%.
Further, including laminate preparation method, comprise the steps:
Step one: micro/nano level metal oxide surface processes, weigh powder particle yardstick and join in the analytical pure ethanol that volume is 7 ~ 15 times of powder less than the metal oxide powder of 1 micron of preset quality, then the mixture of the two is placed in ultrasonic stirrer and disperses 7 ~ 15 minutes, it is subsequently adding the KH550 coupling agent that mass fraction is modifying agent 1 ~ 5%, it is further continued for ultrasonic agitation 5 ~ 45 minutes, then above-mentioned dispersion soln is placed in baking oven and dries, namely obtain surface treated and scattered modifying agent raw material;
Epoxy resin adhesive liquid is prepared: weighs quantitative epoxy source material and the technical pure dimethylbenzene of weight ratio 20 ~ 30%, is first joined in xylene solution by modifying agent and be sufficiently stirred for, then joined in epoxy resin by this suspension again, and be sufficiently stirred for;
Step 2: glass cloth pretreatment, glass cloth surface can not have waxiness, if any carrying out dewaxing treatment, one glass cloth pretreating process is added before conventional laminate sheet coating process, namely the method adopting spraying sprays the coupling agent after dimethylbenzene dilutes to the glass cloth both sides on production line, then enters next road conventional coating process after 120 ~ 140 DEG C of oven for drying;
Step 3: enter conventional coating process, the difference is that glue groove be previously implanted be by step one obtain be sufficiently mixed containing the glue of micro-nano modifying agent and high-temperature curing agent after coating glue, specific practice for unreeling, continuous gluing, drying and rolling, obtained as adhesive plaster on semi-solid preparation;
Step 4: cut out and lamination;
Step 5: temperature-pressure curing molding, solidification temperature is generally 140 ~ 160 DEG C, is generally 16 ~ 24 hours hardening time.
Further, it is ZnO including the metal oxide modified agent used by step one.
Further, after adding coupling agent dispersed liquid including step one, drying temperature in an oven is 80 ~ 100 DEG C, and drying time is 24 ~ 36 hours.
Further, the drying temperature sprayed after coupling agent in an oven to glass cloth including step 2 is about 120 ~ 140 DEG C, and drying time is 2 ~ 4 minutes.
The invention has the beneficial effects as follows, utilize the nonlinear conductivity characteristic of this new material, the accumulation of electrostatic charge in injection material can be effectively stoped under space vacuum radiation environment, discharge dangerous electrostatic charge in non-harmful micropulse conduction current mode, effectively prevent the static discharge harm to electronic circuit.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the preparation method flow chart of the present invention.
Fig. 2 is the conductance property comparison diagram of the present invention and conventional pcb board.
Detailed description of the invention
Such as Fig. 1, shown in 2, a kind of epoxy resin base veneer sheet with antistatic property, laminate is by matrix resin, glass cloth and modifying agent lamination form, in laminate, the mass percent of each component is: epoxy resin 40 ~ 60%, glass cloth 40 ~ 60%, modifying agent 0.5 ~ 30%, matrix resin is liquid epoxies, glass cloth is alkali-free glass cloth, modifying agent is micro/nano level semiconducting oxides, the mass percent of laminate each several part is: epoxy resin 45 ~ 55%, glass cloth 45 ~ 55%, modifying agent 1 ~ 10%, the mass percent of laminate each several part is: epoxy resin 48%, glass cloth 50%, modifying agent 5%, .
Embodiment one: the preparation method step of this epoxy resin base veneer sheet with antistatic property is:
Step 1: Modifiers Surface processes, weigh powder particle yardstick and join in the analytical pure ethanol that volume is 7 times of powder less than the metal oxide powder of 1 micron of preset quality, then the mixture of the two is placed in ultrasonic stirrer and disperses 10 minutes, it is subsequently adding the KH550 coupling agent that mass fraction is modifying agent 1%, it is further continued for ultrasonic agitation 40 minutes, then above-mentioned dispersion soln is placed in 100 DEG C of baking ovens and dries 24 hours, namely obtain surface treated and scattered modifying agent raw material;
Epoxy resin dilution processes: weigh quantitative epoxy source material, weighs technical pure dimethylbenzene that weight ratio is 20% as solution, first quantitative modifying agent raw material is added solvent and is sufficiently stirred for, then is added by this suspension in resin raw material, namely obtains the required glue of coating.
Step 2: glass cloth pretreatment, glass cloth surface can not have waxiness, if any carrying out dewaxing treatment. One glass cloth pretreating process is added before conventional laminate sheet coating process, namely the method adopting spraying sprays the coupling agent after dimethylbenzene dilutes to the glass cloth both sides on production line, then enters next road conventional coating process after 120 DEG C of baking ovens are baked 4 minutes;
Step 3: in proportion to adding high-temperature curing agent in the obtained glue of step 2, be sufficiently stirred for, inject glue groove, be coated with pre-cure process subsequently into routine;
Step 4: cut out and lamination;
Step 5: temperature-pressure curing molding, solidification temperature 140 DEG C, 24 hours hardening times.
Embodiment two: the preparation method step of this epoxy resin base veneer sheet with antistatic property is:
Step 1: Modifiers Surface processes, weigh powder particle yardstick and join in the analytical pure ethanol that volume is 10 times of powder less than the metal oxide powder of 1 micron of preset quality, then the mixture of the two is placed in ultrasonic stirrer and disperses 5 minutes, it is subsequently adding the KH550 coupling agent that mass fraction is modifying agent 1%, it is further continued for ultrasonic agitation 45 minutes, then above-mentioned dispersion soln is placed in 80 DEG C of baking ovens and dries 36 hours, namely obtain surface treated and scattered modifying agent raw material;
Epoxy resin dilution processes: weigh quantitative epoxy source material, weighs technical pure dimethylbenzene that weight ratio is 20% as solution, first quantitative modifying agent raw material is added solvent and is sufficiently stirred for, then is added by this suspension in resin raw material, namely obtains the required glue of coating;
Step 2: glass cloth pretreatment, glass cloth surface can not have waxiness, if any carrying out dewaxing treatment. One glass cloth pretreating process is added before conventional laminate sheet coating process, namely the method adopting spraying sprays the coupling agent after dimethylbenzene dilutes to the glass cloth both sides on production line, then enters next road conventional coating process after 140 DEG C of baking ovens are baked 2 minutes;
Step 3: in proportion to adding high-temperature curing agent in the obtained glue of step 2, be sufficiently stirred for, inject glue groove, be coated with pre-cure process subsequently into routine;
Step 4: cut out and lamination;
Step 5: temperature-pressure curing molding, solidification temperature 150 DEG C, 20 hours hardening times.
Embodiment three: the preparation method step of this epoxy resin base veneer sheet with antistatic property is:
Step 1: Modifiers Surface processes, weigh powder particle average dimension and join in the analytical pure ethanol that volume is 15 times of powder less than the metal oxide powder of 1 micron of preset quality, then the mixture of the two is placed in ultrasonic stirrer and disperses 8 minutes, it is subsequently adding the KH550 coupling agent that mass fraction is modifying agent 1%, it is further continued for ultrasonic agitation 40 minutes, then above-mentioned dispersion soln is placed in 90 DEG C of baking ovens and dries 30 hours, namely obtain surface treated and scattered modifying agent raw material;
Epoxy resin dilution processes: weigh quantitative epoxy source material, weighs industrial grade toluene that weight ratio is 20% as solution, first quantitative modifying agent raw material is added solvent and is sufficiently stirred for, then is added by this suspension in resin raw material, namely obtains the required glue of coating;
Step 2: glass cloth pretreatment, glass cloth surface can not have waxiness, if any carrying out dewaxing treatment;
Step 3: in proportion to adding high-temperature curing agent in the obtained glue of step 2, be sufficiently stirred for, inject glue groove, be coated with pre-cure process subsequently into routine, must be added to automatic stirring measure in coating process;
Step 4: cut out and lamination;
Step 5: temperature-pressure curing molding, solidification temperature 160 DEG C, 16 hours hardening times.
From Fig. 2 with the comparison diagram of conventional laminates conductance property can be seen that, nonlinear conductance characteristic added with modifying agent new material is significantly better than general layer pressing plate, the threshold field not only producing to have reversible feature nonlinear conductance can be controlled, reach the numerical value that we are required, and normal resistance rate is in high state of insulation. Simultaneously it can be seen that when modifier content is bigger, nonlinear conductance characteristic is further obvious, required nonlinear conductivity threshold value is up to ideal numerical value, but machinery, physical property can be under some influence, Comprehensive Assessment, it has been found that it is ideal that nearly nano modification agent content is positioned at 1 ~ 10%. Spatial environments applied analysis shows, the nonlinear conductance quality threshold electric field of pcb board class material should be positioned at less than the 30% of electrical strength, and Fig. 2 shows, has reached scheduled target. Other electric parameter comprehensive and physics, mechanical performance parameter, particularly material discharge and recharge comparative test result and space charge measurement result, this laminate has rational nonlinear conductivity characteristic and corresponding excellent antistatic capability, it is possible not only to space high energy electron irradiation environment, and adjacent ground surface can be used and namely need antistatic, require again the occasion of good insulating performance.
The micro/nano level semi-conductive powder with relatively low specific insulation is joined in glass cloth reinforced epoxy resin laminate by the epoxy resin base veneer sheet of this antistatic property, and three kinds of material surface coupling agents are processed, this kind of laminate sheet material has occurred as soon as the three-phase structure with different resistivity and boundary layer thereof, whether this material occurs that nonlinear conductance characteristic depends primarily on formula, modifying agent yardstick and process technique thereof, it is absent under dangerous electrostatic charge electric field conditions, this material presents close with polymer body material or slightly below polymer high insulation resistance, when static charge accumulation is to when exceeding threshold electric field strength, this advanced composite material (ACM) insulation resistance can reduce at least two orders of magnitude moment, after dischargeing dangerous electrostatic charge, insulation resistance is promptly restored to again high state of insulation, this is so-called nonlinear conductivity characteristic, be by modifying agent microgranule between the what is called " tunnel-effect " that occurs under high local fields of matrix resin thin layer realize, above-mentioned so-called threshold field, refer to that material macroscopic resistance rate declines suddenly corresponding macroscopic electric field, this threshold electric field strength is far below the electric breakdown strength of material.
Described above it is merely exemplary for the purpose of the present invention; and nonrestrictive, those of ordinary skill in the art understand, when the spirit and scope limited without departing from claims; many amendments, change or equivalence can be made, but fall within protection scope of the present invention.
Claims (10)
1. an epoxy resin base veneer sheet with antistatic property, it is characterized in that, laminate is formed by matrix resin, glass cloth and modifying agent lamination, and in laminate, the mass percent of each component is: epoxy resin 40 ~ 60%, glass cloth 40 ~ 60%, modifying agent 0.5 ~ 30%.
2. a kind of epoxy resin base veneer sheet with antistatic property according to claim 1, is characterized in that, described matrix resin is liquid epoxies.
3. a kind of epoxy resin base veneer sheet with antistatic property according to claim 1, is characterized in that, described glass cloth is alkali-free glass cloth.
4. a kind of epoxy resin base veneer sheet with antistatic property according to claim 1, is characterized in that, described modifying agent is micro/nano level semiconducting oxides.
5. a kind of epoxy resin base veneer sheet with antistatic property according to claim 1, is characterized in that, the mass percent of described laminate each several part is: epoxy resin 45 ~ 55%, glass cloth 45 ~ 55%, modifying agent 1 ~ 10%.
6. a kind of epoxy resin base veneer sheet with antistatic property according to claim 5, is characterized in that, the mass percent of described laminate each several part is: epoxy resin 48%, glass cloth 50%, modifying agent 5%.
7. the preparation method of a kind of epoxy resin base veneer sheet with antistatic property according to claim 1, it is characterised in that comprise the steps:
Step one: micro/nano level metal oxide surface processes, weigh powder particle yardstick and join in the analytical pure ethanol that volume is 7 ~ 15 times of powder less than the metal oxide powder of 1 micron of preset quality, then the mixture of the two is placed in ultrasonic stirrer and disperses 7 ~ 15 minutes, it is subsequently adding the KH550 coupling agent that mass fraction is modifying agent 1 ~ 5%, it is further continued for ultrasonic agitation 5 ~ 45 minutes, then above-mentioned dispersion soln is placed in baking oven and dries, namely obtain surface treated and scattered modifying agent raw material;
Epoxy resin adhesive liquid is prepared: weighs quantitative epoxy source material and the technical pure dimethylbenzene of weight ratio 20 ~ 30%, is first joined in xylene solution by modifying agent and be sufficiently stirred for, then joined in epoxy resin by this suspension again, and be sufficiently stirred for;
Step 2: glass cloth pretreatment, glass cloth surface can not have waxiness, if any carrying out dewaxing treatment, one glass cloth pretreating process is added before conventional laminate sheet coating process, namely the method adopting spraying sprays the coupling agent after dimethylbenzene dilutes to the glass cloth both sides on production line, then enters next road conventional coating process after 120 ~ 140 DEG C of oven for drying;
Step 3: enter conventional coating process, the difference is that glue groove be previously implanted be by step one obtain be sufficiently mixed containing the glue of micro-nano modifying agent and high-temperature curing agent after coating glue, specific practice for unreeling, continuous gluing, drying and rolling, obtained as adhesive plaster on semi-solid preparation;
Step 4: cut out and lamination;
Step 5: temperature-pressure curing molding, solidification temperature is generally 140 ~ 160 DEG C, is generally 16 ~ 24 hours hardening time.
8. the preparation method of a kind of epoxy resin base veneer sheet with antistatic property according to claim 7, is characterized in that, the metal oxide modified agent used by described step one is ZnO.
9. the preparation method of a kind of epoxy resin base veneer sheet with antistatic property according to claim 7, is characterized in that, described step one after adding coupling agent dispersed liquid drying temperature in an oven be 80 ~ 100 DEG C, drying time is 24 ~ 36 hours.
10. the preparation method of a kind of epoxy resin base veneer sheet with antistatic property according to claim 7, it is characterized in that, the drying temperature that described step 2 sprays after coupling agent in an oven to glass cloth is about 120 ~ 140 DEG C, and drying time is 2 ~ 4 minutes.
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Cited By (1)
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CN106341949A (en) * | 2016-09-22 | 2017-01-18 | 惠州市永隆电路有限公司 | Circuit board drilling and etching process |
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CN101379161A (en) * | 2006-02-01 | 2009-03-04 | 徐光锡 | Basic solution washable antistatic composition and polymer products manufactured by using the same |
CN102391620A (en) * | 2011-08-30 | 2012-03-28 | 西安交通大学 | Epoxy resin matrix nano-zinc oxide composite material and preparation method thereof |
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2016
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Patent Citations (3)
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