CN109233321A - The plate forming and stress determination method of fibre reinforced unsaturated-resin - Google Patents
The plate forming and stress determination method of fibre reinforced unsaturated-resin Download PDFInfo
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- CN109233321A CN109233321A CN201810775622.XA CN201810775622A CN109233321A CN 109233321 A CN109233321 A CN 109233321A CN 201810775622 A CN201810775622 A CN 201810775622A CN 109233321 A CN109233321 A CN 109233321A
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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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/042—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with carbon fibres
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0047—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to residual stresses
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- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
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- C08K7/04—Fibres or whiskers inorganic
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Abstract
The plate forming and stress determination method of fibre reinforced unsaturated-resin, comprising the following steps: graphene powder, which is added in acetone soln, is prepared into suspension；Unsaturated-resin adds, UV resin, and peroxidized t-butyl perbenzoate, 1,4-benzoquinone and MgO are stirred to form unsaturated-resin mixed liquor；Unsaturated-resin complex liquid and suspension are mixed to form graphene unsaturated-resin complex liquid；Carbon fiber is put into infiltration in graphene unsaturated-resin complex liquid and forms slurry, slurry is poured into board making mold and forms plate；Loading force and change in resistance curve are measured using digital resistance instrument, completes plate pressure sensing calibration measurement.The present invention using graphene change in resistance under pressure characteristic, produce can with electrified regulation, it is sensitive to pressure change and can real-time monitoring glass fiber reinforcement unsaturated-resin plate.The plate made keep its density it is small, intensity is high under the premise of, modulus is bigger, and wearability is stronger.
Description
Technical field
The invention belongs to polymer-based nanos and Carbon Fiber Technology field, and in particular to there is one kind heating to perceive with stress
The plate forming and stress determination method of the fibre reinforced unsaturated-resin of function.
Background technique
Carbon fiber is high intensity, the new fiber materials of high modulus fibre of a kind of phosphorus content 95% or more.Carbon fiber tool
There are many excellent performance, the axial strength and modulus of carbon fiber are high, and density is low, higher than performance, no creep, resistance under non-oxidizing atmosphere
Superhigh temperature, fatigue durability is good, and between nonmetallic between metal, thermal expansion coefficient is small and has each to different for specific heat and electric conductivity
Property, good corrosion resistance, X-ray transparent are good.Good electrical and thermal conductivity performance, electromagnetic wave shielding are good etc..
Unsaturated-resin unsaturated-resin, which refers to, contains unsaturation by what binary acid and dihydric alcohol were generated through polycondensation reaction
The high-molecular compound of double bond.Have certain heat resistance, it is with higher stretch, bending, compression equal strength, it is water-fast, diluted acid, dilute
The performance of the better performances of alkali, organic solvent-resistant is poor, and electric conductivity is good.
Fibre reinforced unsaturated-resin composite board has many advantages, such as that density is small, intensity is high, and designability is strong, is extensive
Applied to the important composite board of one of national economy and national defense construction.But the composite panel electric conductivity is general, no
Can electrified regulation, using being subject to certain restrictions in cold climate.The load that plate is subject to cannot be safe under perception, specific condition
There are hidden danger for property.
Graphene is as a kind of nano-carbon material, and the electron mobility of graphene is more than 15000 cm at normal temperature2/ (V
S), resistivity about 10-6Cm is the smallest material of current resistivity；Graphene has excellent thermal conductivity,
Thermal coefficient may be up to 5300W/mK, be much higher than carbon nanotube and diamond.Graphene had both had high-intensitive, high-elastic mould and strong
The mechanical properties such as toughness, and there are the functional performances such as excellent thermally conductive, conductive, electromagnetism and assign the increasing of unsaturated-resin base carbon fibre
Strong composite material function/intelligent behaviour.With the sharp fall of graphene price, graphene is applied to field of compound material
Undoubtedly there is major application prospect.
Summary of the invention
The present invention provides a kind of keeping before its density is small, intensity is high to solve shortcoming in the prior art
Put, can electrified regulation, perceive plate pressure change fibre reinforced unsaturated-resin plate forming and stress determination
Method.
In order to solve the above technical problems, the present invention adopts the following technical scheme: the plate of fibre reinforced unsaturated-resin
Molding and stress determination method, comprising the following steps:
(1), graphene is formed into graphene powder after machine is hydride modified；
(2), the graphene powder for weighing constant weight is added portionwise in acetone soln, then places it in Ultrasound Instrument to mixed
Solution ultrasonic treatment is closed, finely dispersed suspension is prepared into；
(3), the unsaturated-resin for weighing constant weight is heated to softening temperature or more, and unsaturated-resin is made to be in melt-flow shape
State, is then successively mixed into UV resin, peroxidized t-butyl perbenzoate, is stirred after 1,4-benzoquinone and MgO, forms unsaturated-resin
Mixed liquor；
(4), the unsaturated-resin mixed liquor melt of melting is added in the suspension of step (2) preparation, at a slow speed using blender
Quickly stirring forms graphene unsaturated-resin complex liquid to being uniformly mixed again after stirring；
(5), carbon fiber is put into graphene unsaturated-resin complex liquid sufficiently infiltration and forms slurry；
(6), board making mold is taken out, board making mold is the rectangular channel of open top, the inner sidewall of board making mold
The diagonal position in rectangular channel be respectively arranged with cylinder groove, cylinder groove side is connected to rectangular channel, by positive electrode and negative electrode
It is plugged in two diagonal cylinder grooves respectively, the connecting terminal of positive electrode and negative electrode upper end protrudes die surface；
(7) slurry in step (5) is poured into board making mold, bubble is discharged using vibratory drilling method, it is thick until reaching design
Degree；
(8), slurry successively forms plate, positive electrode after gel, solidification and curing three phases in board making mold
It adheres on plate with negative electrode and is integrally demoulded with plate；
(9), plate is placed after a certain period of time, according to certain method for supporting, plate is loaded using center loaded method
Pressure, positive electrode and negative electrode connect digital resistance instrument, and digital resistance instrument measures loading force and change in resistance curve, complete
Plate pressure sensing calibration measurement；
(10), plate is packaged.
The weight of graphene powder in step (2) is the unsaturated-resin mixed liquor weight melted in step (4)
0.3%。
Using method addition graphene is first mixed in step (1), graphene uses multi-layer graphene, the rule of multi-layer graphene raw material
Lattice are diameter < 2 μm, with a thickness of 1-5nm, specific surface area 500m2/ g, density 2-2.25g/ml, thermal coefficient > 3000w/m
K, electric conductivity > 107S/m。
The softening point of the unsaturated-resin mixed liquor of melting is at 70 °C and following.
Graphene unsaturated-resin complex liquid in step (4) can also be prepared with reduction method；
Reduction method prepares graphene unsaturated-resin complex liquid process are as follows:
Graphene oxide is prepared using Hummers method is improved；3g graphite powder and 1g sodium nitrate are added equipped with the 69 mL concentrated sulfuric acids
In three-necked flask, it is slowly added to 12g potassium permanganate under stirring in ice-water bath, in 10 DEG C or less reaction 1h；35 DEG C or so are warming up to,
Continue to stir 2h；120 mL deionized waters are slowly added to, system temperature is made to be increased to 95 DEG C or so, maintain 30 min, are added big
Distilled water dilution is measured, 30%H is poured into2O2It generates to no bubble, filters while hot, and washed with the HCl solution that volume ratio is 1: 10
Filter cake, using BaCl2Detection, until without SO in filtrate4, it is dried to obtain graphite oxide；Graphite oxide is soluble in water, and ultrasound makes
Be completely dispersed；Obtain graphene oxide；
50g unsaturated-resin and 25g propylene glycol monomethyl ether are added in three-necked flask, 80 DEG C is warming up to, is slowly added dropwise under stirring
10.5g diethanol amine reacts 2h；Then 60 DEG C are cooled to, 20% acetum reaction 30min is added dropwise, is then slowly added into steaming
The quick stirring and emulsifying of distilled water obtains cationic unsaturation lotion；
It adds graphene oxide into unsaturated-resin lotion, stirs ultrasound 1h, keep the temperature 3h at 60 DEG C, then proceed to ultrasound
30min, filtering obtain graphene oxide/unsaturated-resin and dispersion liquid are blended.
The weight for the carbon fiber being added in step (6) accounts for 30%-the 50% of graphene unsaturated-resin complex liquid weight.
Gel, solidification and the detailed process of curing in step (8) are as follows:
Gel: gel time is a part of curing time, and after mixing, resin/curing agent mixture is still liquid and can
To work and be suitble to application；In order to guarantee reliably to be bonded, all construction and positioning work should be done within the curing operation time
It is good；Solidification: mixture initially enters solidification phase, and at this moment it starts gel or " mutation "；At this moment unsaturation is not prolonged
Work is possible, will also lose viscosity；In this stage any interference cannot be carried out to it；It will become soft gel as hard rubber
Object, with thumb will press it is dynamic it；
Curing: cure stage mixture is local solidification, the unsaturated-resin newly used still can with its chemical bonds, therefore
The untreated surface still can be bonded or be reacted；Anyway, close to cured mixture, these abilities are reducing；
Unsaturated mixture reaches solidification and becomes solids stages, at this moment can be sanded and integer；At this moment with thumb pressed it is motionless it, at this
When unsaturated-resin there are about 90% end reaction intensity, therefore can remove fixed clip, maintained at room temperature if placing it
Doing angel, it continues to solidify.
Center loaded method in step (9) specifically: multistage loadings are carried out to practical maximum to plate plane position of form center
Load；By sheet material measurement under by different load actions the variation of voltage and current calculate resistivity, utilize digital resistance instrument survey
It measures loading force and change in resistance curve calculates actual loading, while the security situation of plate is monitored.
The trade mark of UV resin is 9893, UV resin, peroxidized t-butyl perbenzoate, 1,4-benzoquinone and MgO difference in step (3)
Account for 15%, 2%, 0.5% and the 2.5% of unsaturated-resin mixed liquor weight.
By adopting the above technical scheme, method for supporting is set according to the actual support condition of test plate, different practical branch
Stay part uses different method for supporting.Such as: simply supported on four sides, opposite side freely-supported, arbitrary loading, opposite side are clamped.
Since graphene partial size is very small and is powder, the present invention is added multi-layer graphene using method is first mixed, is not easy in this way
It is adsorbed on stirring vessel and stirring blade and causes damages.The present invention improves unsaturated-resin base using a certain amount of graphene is added
Carbon fiber sheet conduction and voltage-dependent characteristic, adapt to plate heating requirements under specified conditions, while can pass through real-time measurement resistance
Rate variation perception plate stress condition.
Although carbon fiber additional amount is bigger, composite material strength is higher, and carbon fiber additional amount is bigger, composite material
Brittleness is also bigger.The effect of carbon fiber: carbon fiber is a kind of inorganic non-metallic material haveing excellent performance, and heat resistance is strong, anticorrosive
The good, high mechanical strength of property, tensile strength are big.Tensile strength is 6.3~6.9g/d in normal conditions, moisture state 5.4~
5.8g/d, density 2.54g/cm3, carbon fiber are used as a kind of reinforcing material in the composite material.
Production method of the present invention is simple and easy, using the characteristic of graphene change in resistance under pressure, produces
Can with electrified regulation, it is sensitive to pressure change and can real-time monitoring fibre reinforced unsaturated-resin plate.It makes
Plate keep its density it is small, intensity is high under the premise of, modulus is bigger, and wearability is stronger.After tested, based on unsaturated-resin
Graphene+carbon fibre composite heating declines 80 times with the resistance of force sensing function plate is answered.Thermal coefficient improves 40%, pressure
Quick coefficient reaches 100 or more.
Detailed description of the invention
Fig. 1 is the schematic top plan view of board making mold.
Specific embodiment
The plate forming and stress determination method of fibre reinforced unsaturated-resin of the invention, comprising the following steps:
(1), graphene is formed into graphene powder after machine is hydride modified；
(2), the graphene powder for weighing constant weight is added portionwise in acetone soln, then places it in Ultrasound Instrument to mixed
Solution ultrasonic treatment is closed, finely dispersed suspension is prepared into；
(3), the unsaturated-resin for weighing constant weight is heated to softening temperature or more, and unsaturated-resin is made to be in melt-flow shape
State, is then successively mixed into UV resin, peroxidized t-butyl perbenzoate, is stirred after 1,4-benzoquinone and MgO, forms unsaturated-resin
Mixed liquor；
(4), the unsaturated-resin mixed liquor melt of melting is added in the suspension of step (2) preparation, at a slow speed using blender
Quickly stirring forms graphene unsaturated-resin complex liquid to being uniformly mixed again after stirring；
(5), carbon fiber is put into graphene unsaturated-resin complex liquid sufficiently infiltration and forms slurry；
(6), as shown in Figure 1, taking out board making mold 1, board making mold 1 is the rectangular channel 2 of open top, board making
The diagonal position in rectangular channel 2 of the inner sidewall of mold 1 is respectively arranged with cylinder groove 3, and 3 side of cylinder groove is connected to rectangular channel 2,
Positive electrode and negative electrode are plugged respectively in two diagonal cylinder grooves 3, the connecting terminal of positive electrode and negative electrode upper end is convex
1 surface of board making mold out；
(7) slurry in step (5) is poured into board making mold 1, bubble is discharged using vibratory drilling method, it is thick until reaching design
Degree；
(8), slurry successively forms plate, positive electrode after gel, solidification and curing three phases in board making mold 1
It adheres on plate with negative electrode and is integrally demoulded with plate；
(9), plate is placed after a certain period of time, according to certain method for supporting, plate is loaded using center loaded method
Pressure, positive electrode and negative electrode connect digital resistance instrument, and digital resistance instrument measures loading force and change in resistance curve, complete
Plate pressure sensing calibration measurement；
(10), plate is packaged.
The weight of graphene powder in step (2) is the unsaturated-resin mixed liquor weight melted in step (4)
0.3%。
Using method addition graphene is first mixed in step (1), graphene uses multi-layer graphene, the rule of multi-layer graphene raw material
Lattice are diameter < 2 μm, with a thickness of 1-5nm, specific surface area 500m2/ g, density 2-2.25g/ml, thermal coefficient > 3000w/m
K, electric conductivity > 107S/m。
The softening point of the unsaturated-resin mixed liquor of melting is at 70 °C and following.
Graphene unsaturated-resin complex liquid in step (4) can also be prepared with reduction method；
Reduction method prepares graphene unsaturated-resin complex liquid process are as follows:
Graphene oxide is prepared using Hummers method is improved；3g graphite powder and 1g sodium nitrate are added equipped with the 69 mL concentrated sulfuric acids
In three-necked flask, it is slowly added to 12g potassium permanganate under stirring in ice-water bath, in 10 DEG C or less reaction 1h；35 DEG C or so are warming up to,
Continue to stir 2h；120 mL deionized waters are slowly added to, system temperature is made to be increased to 95 DEG C or so, maintain 30 min, are added big
Distilled water dilution is measured, 30%H is poured into2O2It generates to no bubble, filters while hot, and washed with the HCl solution that volume ratio is 1: 10
Filter cake, using BaCl2Detection, until without SO in filtrate4, it is dried to obtain graphite oxide；Graphite oxide is soluble in water, and ultrasound makes
Be completely dispersed；Obtain graphene oxide；
50g unsaturated-resin and 25g propylene glycol monomethyl ether are added in three-necked flask, 80 DEG C is warming up to, is slowly added dropwise under stirring
10.5g diethanol amine reacts 2h；Then 60 DEG C are cooled to, 20% acetum reaction 30min is added dropwise, is then slowly added into steaming
The quick stirring and emulsifying of distilled water obtains cationic unsaturation lotion；
It adds graphene oxide into unsaturated-resin lotion, stirs ultrasound 1h, keep the temperature 3h at 60 DEG C, then proceed to ultrasound
30min, filtering obtain graphene oxide/unsaturated-resin and dispersion liquid are blended.
The weight for the carbon fiber being added in step (6) accounts for 30%-the 50% of graphene unsaturated-resin complex liquid weight.
Gel, solidification and the detailed process of curing in step (8) are as follows:
Gel: gel time is a part of curing time, and after mixing, resin/curing agent mixture is still liquid and can
To work and be suitble to application；In order to guarantee reliably to be bonded, all construction and positioning work should be done within the curing operation time
It is good；Solidification: mixture initially enters solidification phase, and at this moment it starts gel or " mutation "；At this moment unsaturation is not prolonged
Work is possible, will also lose viscosity；In this stage any interference cannot be carried out to it；It will become soft gel as hard rubber
Object, with thumb will press it is dynamic it；
Curing: cure stage mixture is local solidification, the unsaturated-resin newly used still can with its chemical bonds, therefore
The untreated surface still can be bonded or be reacted；Anyway, close to cured mixture, these abilities are reducing；
Unsaturated mixture reaches solidification and becomes solids stages, at this moment can be sanded and integer；At this moment with thumb pressed it is motionless it, at this
When unsaturated-resin there are about 90% end reaction intensity, therefore can remove fixed clip, maintained at room temperature if placing it
Doing angel, it continues to solidify.
Center loaded method in step (9) specifically: multistage loadings are carried out to practical maximum to plate plane position of form center
Load；By sheet material measurement under by different load actions the variation of voltage and current calculate resistivity, utilize digital resistance instrument survey
It measures loading force and change in resistance curve calculates actual loading, while the security situation of plate is monitored.
The trade mark of UV resin is 9893, UV resin, peroxidized t-butyl perbenzoate, 1,4-benzoquinone and MgO difference in step (3)
Account for 15%, 2%, 0.5% and the 2.5% of unsaturated-resin mixed liquor weight.
The present embodiment not makes any form of restriction shape of the invention, material, structure etc., all according to this hair
Bright technical spirit any simple modification, equivalent change and modification to the above embodiments, belong to the technology of the present invention side
The protection scope of case.
Claims (9)
1. the plate forming and stress determination method of fibre reinforced unsaturated-resin, it is characterised in that: the following steps are included:
(1), graphene is formed into graphene powder after machine is hydride modified；
(2), the graphene powder for weighing constant weight is added portionwise in acetone soln, then places it in Ultrasound Instrument to mixed
Solution ultrasonic treatment is closed, finely dispersed suspension is prepared into；
(3), the unsaturated-resin for weighing constant weight is heated to softening temperature or more, and unsaturated-resin is made to be in melt-flow shape
State, is then successively mixed into UV resin, peroxidized t-butyl perbenzoate, is stirred after 1,4-benzoquinone and MgO, forms unsaturated-resin
Mixed liquor；
(4), the unsaturated-resin mixed liquor melt of melting is added in the suspension of step (2) preparation, at a slow speed using blender
Quickly stirring forms graphene unsaturated-resin complex liquid to being uniformly mixed again after stirring；
(5), carbon fiber is put into graphene unsaturated-resin complex liquid sufficiently infiltration and forms slurry；
(6), board making mold is taken out, board making mold is the rectangular channel of open top, the inner sidewall of board making mold
The diagonal position in rectangular channel be respectively arranged with cylinder groove, cylinder groove side is connected to rectangular channel, by positive electrode and negative electrode
It is plugged in two diagonal cylinder grooves respectively, the connecting terminal of positive electrode and negative electrode upper end protrudes die surface；
(7) slurry in step (5) is poured into board making mold, bubble is discharged using vibratory drilling method, it is thick until reaching design
Degree；
(8), slurry successively forms plate, positive electrode after gel, solidification and curing three phases in board making mold
It adheres on plate with negative electrode and is integrally demoulded with plate；
(9), plate is placed after a certain period of time, according to certain method for supporting, plate is loaded using center loaded method
Pressure, positive electrode and negative electrode connect digital resistance instrument, and digital resistance instrument measures loading force and change in resistance curve, complete
Plate pressure sensing calibration measurement；
(10), plate is packaged.
2. the plate forming and stress determination method of fibre reinforced unsaturated-resin according to claim 1, feature
Be: the weight of the graphene powder in step (2) is the 0.3% of the unsaturated-resin mixed liquor weight melted in step (4).
3. the plate forming and stress determination method of fibre reinforced unsaturated-resin according to claim 1, feature
Be: using method addition graphene is first mixed in step (1), graphene uses multi-layer graphene, the specification of multi-layer graphene raw material
For diameter < 2 μm, with a thickness of 1-5nm, specific surface area 500m2/ g, density 2-2.25g/ml, thermal coefficient > 3000w/mK,
Electric conductivity > 107S/m。
4. the plate forming and stress determination method of fibre reinforced unsaturated-resin according to claim 2, feature
Be: the softening point of the unsaturated-resin mixed liquor of melting is at 70 °C and following.
5. the plate forming and stress determination method of fibre reinforced unsaturated-resin according to claim 1, feature
Be: the graphene unsaturated-resin complex liquid in step (4) can also be prepared with reduction method；
Reduction method prepares graphene unsaturated-resin complex liquid process are as follows:
Graphene oxide is prepared using Hummers method is improved；3g graphite powder and 1g sodium nitrate are added equipped with the 69 mL concentrated sulfuric acids
In three-necked flask, it is slowly added to 12g potassium permanganate under stirring in ice-water bath, in 10 DEG C or less reaction 1h；35 DEG C or so are warming up to,
Continue to stir 2h；120 mL deionized waters are slowly added to, system temperature is made to be increased to 95 DEG C or so, maintain 30 min, are added big
Distilled water dilution is measured, 30%H is poured into2O2It generates to no bubble, filters while hot, and washed with the HCl solution that volume ratio is 1: 10
Filter cake, using BaCl2Detection, until without SO in filtrate4, it is dried to obtain graphite oxide；Graphite oxide is soluble in water, and ultrasound makes
Be completely dispersed；Obtain graphene oxide；
50g unsaturated-resin and 25g propylene glycol monomethyl ether are added in three-necked flask, 80 DEG C is warming up to, is slowly added dropwise under stirring
10.5g diethanol amine reacts 2h；Then 60 DEG C are cooled to, 20% acetum reaction 30min is added dropwise, is then slowly added into steaming
The quick stirring and emulsifying of distilled water obtains cationic unsaturation lotion；
It adds graphene oxide into unsaturated-resin lotion, stirs ultrasound 1h, keep the temperature 3h at 60 DEG C, then proceed to ultrasound
30min, filtering obtain graphene oxide/unsaturated-resin and dispersion liquid are blended.
6. the plate forming and stress determination method of fibre reinforced unsaturated-resin according to claim 1, feature
Be: the weight for the carbon fiber being added in step (6) accounts for 30%-the 50% of graphene unsaturated-resin complex liquid weight.
7. the plate forming and stress determination method of fibre reinforced unsaturated-resin according to claim 1, feature
It is: gel, solidification and the detailed process of curing in step (8) are as follows:
Gel: gel time is a part of curing time, and after mixing, resin/curing agent mixture is still liquid and can
To work and be suitble to application；In order to guarantee reliably to be bonded, all construction and positioning work should be done within the curing operation time
It is good；Solidification: mixture initially enters solidification phase, and at this moment it starts gel or " mutation "；At this moment unsaturation is not prolonged
Work is possible, will also lose viscosity；In this stage any interference cannot be carried out to it；It will become soft gel as hard rubber
Object, with thumb will press it is dynamic it；
Curing: cure stage mixture is local solidification, the unsaturated-resin newly used still can with its chemical bonds, therefore
The untreated surface still can be bonded or be reacted；Anyway, close to cured mixture, these abilities are reducing；
Unsaturated mixture reaches solidification and becomes solids stages, at this moment can be sanded and integer；At this moment with thumb pressed it is motionless it, at this
When unsaturated-resin there are about 90% end reaction intensity, therefore can remove fixed clip, maintained at room temperature if placing it
Doing angel, it continues to solidify.
8. the plate forming and stress determination method of fibre reinforced unsaturated-resin according to claim 1, feature
It is: the center loaded method in step (9) specifically: multistage loadings are carried out to practical maximum lotus to plate plane position of form center
It carries；By sheet material measurement under by different load actions the variation of voltage and current calculate resistivity, utilize digital resistance instrument measurement
Loading force and change in resistance curve calculate actual loading out, while being monitored to the security situation of plate.
9. the plate forming and stress determination method of fibre reinforced unsaturated-resin according to claim 1, feature
Be: the trade mark of UV resin is that 9893, UV resin, peroxidized t-butyl perbenzoate, 1,4-benzoquinone and MgO are accounted for respectively in step (3)
15%, 2%, 0.5% and the 2.5% of unsaturated-resin mixed liquor weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810775622.XA CN109233321A (en) | 2018-07-16 | 2018-07-16 | The plate forming and stress determination method of fibre reinforced unsaturated-resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810775622.XA CN109233321A (en) | 2018-07-16 | 2018-07-16 | The plate forming and stress determination method of fibre reinforced unsaturated-resin |
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