CN107418242A - DMC CF types high strength composites and its application in manhole cover - Google Patents
DMC CF types high strength composites and its application in manhole cover Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
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Abstract
The invention discloses a kind of DMC CF types high strength composite and its application in manhole cover, it is related to road equipment technical field.Composite, there is following performance：Lightweight, specific strength is high, anti-seismic performance is strong, anti-fatigue performance is good, high temperature resistant, the chemicals such as acid and alkali-resistance corrode, good insulating, proof voltage, higher mechanical performance, fail-safety is good, bearing capacity is strong, high accuracy, low-expansion coefficient, weatherability is strong, enough anti-flammabilitys, mildew resistance, it is water-fast, oil resistant, non-corrosive, damping noise reduction is good, anti- sound, bounce-proof, anti-theft is high, environmental protection and energy saving, it is pollution-free, installation facility, pliability is good, strong adaptability, thermodynamic property is excellent, it is easy to large area global formation, it is non-maintaining；Apply it in the preparation of manhole cover, solve traditional cast iron well lid, or the manhole cover that makes of nonmetallic composite of the prior art produced problem in use.
Description
Technical field
The present invention relates to road equipment technical field, more particularly to a kind of DMC-CF types high strength composite and its examining
The application looked into well lid.
Background technology
Manhole cover is urban construction, the essential facility of municipal administration, such as running water, electric power, blowdown, telecommunications, You Xian electricity
Depending on the facility of the departments such as, combustion gas, heating power, fire-fighting, environmental sanitation.
At present, manhole cover mainly includes two kinds：It is a kind of be cast iron materials manufacture manhole cover, the inspection of this material
Noise is big when well lid is not only easily stolen robber, used, and high energy consumption has pollution during production；Another kind is nonmetallic composite
Manhole cover, intensity difference, fragility are big, easy to aging, easy fracture；Framework of steel reinforcement is different from the coefficient of expansion of composite, in height
Temperature, the lower easily disengaging of low temperature change, so as to reduce bearing strength, reduction of service life.Become trap on road and it is concavo-convex not
Flat " navel ", it have impact on the current stationarity of Pedestrians and vehicles and bring potential safety hazard, while be also detracted from the attractive in appearance of the appearance of the city.
The content of the invention
It is an object of the invention to provide a kind of DMC-CF types high strength composite and its application in manhole cover,
So as to solve foregoing problems present in prior art.
To achieve these goals, the technical solution adopted by the present invention is as follows：
A kind of DMC-CF types high strength composite, it is characterised in that be made up of the composition of following number：Thermosetting resin
20-40, styrene pellets 3-6, styrene 4-8, carbon cloth or alkali-free fiber cloth 1-3, carbon fiber long fibre or without alkali fiber
Long fibre 1-5, Staple carbon fibers or without alkali fiber chopped fiber 6-15, tree fourth fat 0.1-0.3, zinc stearate 1-2, calcium hydroxide
0.2-0.4, silica flour or flyash 15-25, quartz sand 10-15, high-calcium powder 10-20, pigment 0.1-0.3.
Preferably, it is made up of the composition of following number：Thermosetting resin 35；Styrene pellets 5；Styrene 6；Carbon cloth
3；Carbon fiber long fibre 3；Staple carbon fibers 15；Tertiary fourth fat 0.1；Zinc stearate 1；Calcium hydroxide 0.2；Silica flour 20；Quartz
Sand 10；High-calcium powder 10；Pigment 0.2.
Preferably, it is made up of the composition of following number：Thermosetting resin 33；Styrene pellets 5；Styrene 6；Without alkali fiber
Cloth 3；Without alkali fiber long fibre 5；Staple carbon fibers 6；Tertiary fourth fat 0.1；Zinc stearate 2；Calcium hydroxide 0.2；Silica flour 25；Stone
Sand 15；High-calcium powder 10；Pigment 0.2.
The preparation method of DMC-CF type high strength composites described above, comprises the following steps：
S1, each composition is weighed according to proportioning；
S2, styrene pellets and styrene are mixed into 60-120 minutes to particle and are completely melt, obtain the first mixing
Material, and the first compound is poured into kneader together with thermosetting resin, and add tree fourth fat, zinc stearate, calcium hydroxide
Stirred with pigment, obtain the second compound；
S3, the second compound is poured into silica flour or flyash, quartz sand and high-calcium powder respectively again and stirred in kneader
Uniformly, the 3rd compound is obtained；
S4, the 3rd compound is stirred with Staple carbon fibers or without alkali fiber chopped fiber, obtains composite wood dough
Material；
S5, the second mixing is immersed in by carbon cloth or alkali-free fiber cloth, carbon fiber long fibre or without alkali fiber long fibre
In material, until the second compound oozes completely by carbon cloth or alkali-free fiber cloth, carbon fiber long fibre or without alkali fiber long fibre
Thoroughly, carbon cloth or alkali-free fiber cloth prepreg are obtained, carbon fiber long fibre or without alkali fiber long fibre prepreg.
A kind of application of DMC-CF types high strength composite in manhole cover, the DMC-CF types high-strength composite material
The DMC-CF type high strength composites for expecting to prepare using the above method.
A kind of manhole cover, the DMC-CF type high strength composites prepared using the above method are prepared.
Preferably, three layers of table for being layed in well lid respectively of carbon cloth or alkali-free fiber cloth prepreg point upper, middle and lower
Face, middle part and the back side, if or being only layed in the surface of well lid according to one layer and dried layer；The carbon fiber long fibre or without alkali fiber
Long fibre prepreg is arranged on the reinforcement part inside well lid；The composite wood dough material is filled in well lid die cavity, and upper
The carbon cloth or alkali-free fiber cloth prepreg and carbon fiber long fibre stated combine integral without alkali fiber long fibre prepreg.
The beneficial effects of the invention are as follows：DMC-CF types high strength composite provided in an embodiment of the present invention and its checking
Application in well lid, wherein, include the DMC-CF type high strength composites of carbon fibre material composition, there is following performance：Gently
The chemicals burn intos such as matter, specific strength are high, anti-seismic performance is strong, designability is strong, anti-fatigue performance is good, high temperature resistant, acid and alkali-resistance are anti-ageing
Change, good insulating, arc resistance can good, proof voltage, higher mechanical performance, fail-safety is good, bearing capacity is strong, high-precision
Strong, the enough anti-flammability of degree, low-expansion coefficient, weatherability, mildew resistance, water-fast, oil resistant, non-corrosive, damping noise reduction are good, anti-
Sound, bounce-proof, anti-theft height, easy coloring, bright in luster, attractive and durable, environmental protection and energy saving, pollution-free, installation facility, pliability
Good, strong adaptability, thermodynamic property is excellent, is easy to large area global formation, is non-maintaining；Apply it to the system of manhole cover
In standby, solves traditional cast iron well lid, or the manhole cover that nonmetallic composite of the prior art makes was using
Produced problem in journey, pollution consumption reduction is not only reduced with national energy-saving emission reduction, persistently improves fundamental state policy and the country of environment
Industrial policy matches completely, and also " is matched completely with moulding Dai Gang " fundamental state policy with national simultaneously.Add for country
The fast popularization and application for promoting advanced composite material (ACM), to innovate power, quality power, there is very great meaning.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, the present invention is carried out below further
Describe in detail.It should be appreciated that embodiment described herein is not used to limit this hair only to explain the present invention
It is bright.
Composite refers to the solid material that two or more Material claddings forms.Can be the compound of layer or
The composite prepared after raw material mixing.
In carbon fiber enhancement resin base composite material, carbon fiber plays humidification, and resin base then makes composite
The entirety of bear external force is shaped to, and load is transmitted in carbon fiber by interface.
When preparing composite, carbon fiber is broadly divided into two types：Continuous fiber and chopped fiber.Continuous fiber increases
Strong composite generally has more preferable mechanical performance.But short fiber composite material can be used and added with resin matrix identical
Work technique, such as：Compression molding, injection moulding and extrusion molding etc..When using suitable moulding process, chopped fiber composite wood
Material even can possess the mechanical performance to be compared favourably with continuous fiber composite material, and be suitable for producing on a large scale.Carbon is fine
Dimension reinforced resin based composites have lightweight, specific strength height, anti-seismic performance is strong, designability is strong, anti-fatigue performance is good, resistance to height
The chemicals burn into such as temperature, acid and alkali-resistance is anti-aging, good insulating, arc resistance can good, proof voltage, higher mechanical performance, broken
Damage security is good, bearing capacity is strong, high accuracy, low-expansion coefficient, the anti-flammability that weatherability is strong, enough, mildew resistance, water-fast, oil resistant,
Non-corrosive, damping noise reduction be good, anti-sound, bounce-proof, anti-theft height, easy coloring, bright in luster, attractive and durable, environmental protection and energy saving,
It is pollution-free, installation is convenient, pliability is good, strong adaptability, thermodynamic property is excellent, is easy to large area global formation, is non-maintaining
Etc. particular advantages, be other fibre reinforced composites it is incomparable.
Carbon fiber is a kind of new material of excellent in mechanical performance, and its proportion is less than the 1/4 of steel, carbon fiber enhancement resin base
Composite material tensile strength is general all in more than 3500MPa, is 7-9 times of steel, and tensile modulus of elasticity is 2300~4300MPa,
It is also higher than steel.Therefore the ratio between the intensity of carbon fiber enhancement resin base composite material (CFRP) and its density can reach 2000MPa/
(g/cm3) more than, and the specific strength of A3 steel is only 59MPa/ (g/cm3) left and right, and its specific modulus is also higher than steel.The specific strength of material
Higher, then member dead weight is smaller, and specific modulus is higher, then the rigidity of component is bigger.The advantages of carbon fiber is most prominent is rigidity and strong
Degree is high (being 5 times of steel), and has outstanding heat resistance (can tolerate 2000 DEG C of high temperature above), outstanding thermal-shock resistance, low
It is thermal coefficient of expansion (deflection is small), thermal capacity small (energy-conservation), proportion small (the 1/5 of steel), outstanding anticorrosive and radiance, anti-
Creep properties, excellent size stability, service life length.This materials of some carbon fibre materials will have been made more than material by adding carbon fiber
The advantages of material.
Embodiment one
The embodiments of the invention provide a kind of DMC-CF types high strength composite, it is made up of the composition of following number：Heat
Thermosetting resin 20-40, styrene pellets 3-6, styrene 4-8, carbon cloth or alkali-free fiber cloth 1-3, carbon fiber long fibre or
Without alkali fiber long fibre 1-5, Staple carbon fibers or without alkali fiber chopped fiber 6-15, fourth fat 0.1-0.3, zinc stearate 1-2 are set,
Calcium hydroxide 0.2-0.4, silica flour or flyash 15-25, quartz sand 10-15, high-calcium powder 10-20, pigment 0.1-0.3.
In a preferred embodiment of the invention, there is provided a kind of DMC-CF types high strength composite, by following part
Several composition compositions：(1) thermosetting resin 35；(2) styrene pellets 5；(3) styrene 6；(4) carbon cloth 3；(5) carbon fiber length is fine
Dimension 3；(6) Staple carbon fibers 15；(7) tertiary fourth fat 0.1；(8) zinc stearate 1；(9) calcium hydroxide 0.2；(10) silica flour 20；(11) it is quartzy
Sand 10；(12) high-calcium powder 10；(13) pigment 0.2.
In a preferred embodiment of the invention, there is provided a kind of DMC-CF types high strength composite, by following part
Several composition compositions：(1) thermosetting resin 33；(2) styrene pellets 5；(3) styrene 6；(4) alkali-free fiber cloth 3；(5) without alkali fiber
Long fibre 5；(6) Staple carbon fibers 6；(7) tertiary fourth fat 0.1；(8) zinc stearate 2；(9) calcium hydroxide 0.2；(10) silica flour 25；(11) stone
Sand 15；(12) high-calcium powder 10；(13) pigment 0.2.
Embodiment two
The embodiments of the invention provide a kind of preparation method of the DMC-CF type high strength composites described in embodiment one,
Comprise the following steps：
S1, each composition is weighed according to proportioning；
S2, styrene pellets and styrene are mixed into 60-120 minutes to particle and are completely melt, obtain the first mixing
Material, and the first compound is poured into kneader together with thermosetting resin, and add tree fourth fat, zinc stearate, calcium hydroxide
Stirred with pigment, obtain the second compound；
S3, the second compound is poured into silica flour or flyash, quartz sand and high-calcium powder respectively again and stirred in kneader
Uniformly, the 3rd compound is obtained；
S4, the 3rd compound is stirred with Staple carbon fibers or without alkali fiber chopped fiber, obtains composite wood dough
Material；
S5, the second mixing is immersed in by carbon cloth or alkali-free fiber cloth, carbon fiber long fibre or without alkali fiber long fibre
In material, until the second compound oozes completely by carbon cloth or alkali-free fiber cloth, carbon fiber long fibre or without alkali fiber long fibre
Thoroughly, carbon cloth or alkali-free fiber cloth prepreg are obtained, carbon fiber long fibre or without alkali fiber long fibre prepreg.
Embodiment three
It is described the embodiments of the invention provide a kind of application of DMC-CF types high strength composite in manhole cover
DMC-CF types high strength composite is the DMC-CF type high strength composites prepared using the method described in embodiment two.
Example IV
The embodiments of the invention provide a kind of manhole cover, utilizes the DMC-CF type high intensity of the preparation described in embodiment two
Composite is prepared.
Wherein, described three layers of surface for being layed in well lid respectively of carbon cloth or alkali-free fiber cloth prepreg point upper, middle and lower,
Middle part and the back side, if or being only layed in the surface of well lid according to one layer and dried layer；The carbon fiber long fibre is grown without alkali fiber
Fiber prepreg material is arranged on the reinforcement part inside well lid；The composite wood dough material is filled in well lid die cavity, and above-mentioned
Carbon cloth or alkali-free fiber cloth prepreg and carbon fiber long fibre or combined without alkali fiber long fibre prepreg integral.
Specific embodiment (one)
The proportioning of DMC-CF type high strength composites, is made up of the composition of following number：
(1) thermosetting resin 35；(2) styrene pellets 5；(3) styrene 6；(4) carbon cloth 3；(5) carbon fiber long fibre 3；⑹
Staple carbon fibers 15；(7) tertiary fourth fat 0.1；(8) zinc stearate 1；(9) calcium hydroxide 0.2；(10) silica flour 20；(11) quartz sand 10；⑿
High-calcium powder 10；(13) pigment 0.2.
The DMC-CF type high strength composites of said ratio, are prepared in accordance with the following steps：
The first step：Each composition is weighed according to proportioning；
Second step：Liquid mixes
Styrene pellets and styrene are mixed and pour into special-purpose stirring machine, stirring 60-120 minutes (are dissolved completely with particle
It is defined).
The compound of styrene pellets and styrene and thermosetting resin are poured into kneader respectively, add tertiary fourth fat stirring
Uniformly (10-15 minutes).
3rd step：The preparation of fluid mix, powder
First zinc stearate, calcium hydroxide, pigment are poured into kneader and stirred, be subsequently poured into silica flour, quartz sand and
High-calcium powder, it is stirred for uniformly.
4th step：With the mixing of Staple carbon fibers
The compound that 3rd step obtains is added into Staple carbon fibers, stirs 5-10 minutes.
Note：Proportioning is using 350 liters of kneader as standard above.
5th step：Slurry makes
Zinc stearate, calcium hydroxide, silica flour and pigment is added to pour into kneader stirring the fluid mix of second step equal
It is even.
6th step：Carbon cloth and the long stapled preimpregnation of carbon fiber
Carbon cloth and carbon fiber long fibre are immersed in the slurry of the 5th step making, until slurry by carbon cloth and
Carbon fiber long fibre permeates.
After slurry, carbon cloth and carbon fiber long fibre prepreg have been prepared, pack.Needed in the environment of≤20 DEG C
Used in 10 days.
Manufacture manhole cover when, by carbon cloth be mainly three layers of upper, middle and lower (or only wherein one layer) be distributed in well lid or
Surface；Carbon fiber long fibre prepreg can prefabricated carbon fiber reinforcement or the internal structure for being directly applied to well lid reinforcement muscle portion
Point；Staple carbon fibers are then distributed in composite wood dough material.Composite wood dough material is filled in well lid die cavity, with above-mentioned carbon
Fiber cloth or alkali-free fiber cloth prepreg and carbon fiber long fibre combine integral without alkali fiber long fibre prepreg.The DMC-
The manufacture craft of CF type high-strength composite material manhole covers uses hydraulic press, is molded one-shot forming by HTHP, is one
The new environment-friendly products of kind.Simultaneously also can use make by hand and other techniques make.
Finder charge detection is carried out to the bearing capacity of manhole cover with reference to standard GB/T/T23858-2009 specification.
Method for testing and detecting is：It is not less than 500kN loading equipemtn by application load, is placed on and meets on standard-sized stiffness bearer
Pressurizeed, the rubber sheet gasket that one piece of thickness is 6mm~10mm, the outer rim of pad are placed between the stiffness bearer and detection well lid
Size should be identical with stiffness bearer.Load carrying capacity test step is further applied load as defined in this standard, and detected data are
430kN, and 30s is kept, manhole cover does not find crackle and breakage, and the detected manhole cover bearing capacity numerical value is
430kN, that is, it is qualified to be determined as.
Specific embodiment (two)
The proportioning of DMC-CF type high strength composites, is made up of the composition of following number：
(1) thermosetting resin 33；(2) styrene pellets 5；(3) styrene 6；(4) alkali-free fiber cloth 3；(5) without alkali fiber long fibre
5；(6) Staple carbon fibers 6；(7) tertiary fourth fat 0.1；(8) zinc stearate 2；(9) calcium hydroxide 0.2；(10) silica flour 25；(11) quartz sand
15；(12) high-calcium powder 10；(13) pigment 0.2.The DMC-CF type high strength composites of said ratio, are made in accordance with the following steps
It is standby：
The first step：Each composition is weighed according to proportioning；
Second step：Liquid mixes；
Styrene pellets and styrene are mixed and pour into special-purpose stirring machine, stirring 60-120 minutes (are dissolved completely with particle
It is defined).
The compound of styrene pellets and styrene and thermosetting resin are poured into kneader respectively, add tertiary fourth fat stirring
Uniformly (10-15 minutes).
3rd step：The making of fluid mix, powder
Zinc stearate, calcium hydroxide and pigment first are poured into kneader to stir, be subsequently poured into silica flour, quartz sand and
High-calcium powder, it is stirred for uniformly.
4th step：With the mixing of Staple carbon fibers
The compound of 3rd step is added into Staple carbon fibers, stirs 5-10 minutes.
Note：Proportioning is using 350 liters of kneader as standard above.
5th step：Slurry makes
The fluid mix of second step is added into zinc stearate, calcium hydroxide, silica flour and pigment and pours into kneader stirring
Uniformly.
6th step：Alkali-free fiber cloth and without the long stapled preimpregnation of alkali fiber
It is immersed in by alkali-free fiber cloth and without alkali fiber long fibre in the slurry of the 5th step making, until slurry is fine by alkali-free
Wei Bu and without alkali fiber long fibre permeate.
Slurry, alkali-free fiber cloth and after having been prepared without alkali fiber long fibre prepreg, are packed.In≤20 DEG C of environment
Under need to be used in 10 days.
During production, alkali-free fiber cloth is mainly that three layers of upper, middle and lower (or only wherein one layer) is distributed in well lid or table
Face；Without alkali fiber long fibre prepreg can prefibers reinforcement or be directly applied to well lid internal structure reinforcement muscle portion
Point；Staple carbon fibers are then distributed in composite wood dough material.Composite wood dough material is filled in well lid die cavity, with above-mentioned nothing
Alkali fiber cloth prepreg and without alkali fiber long fibre prepreg combine it is integral.The DMC-CF type high strength composite inspection shafts
The manufacture craft of lid uses hydraulic press, is molded one-shot forming by HTHP, is a kind of new environment-friendly products.Also may be used simultaneously
Using make by hand and other techniques make.
The finder charge inspection done with reference to standard GB/T/T23858-2009 specification to the bearing capacity of manhole cover
Survey.Method for testing and detecting：It is not less than 500kN loading equipemtn by application load, is placed on and meets standard-sized stiffness bearer
On pressurizeed, the stiffness bearer and detection well lid between should place one piece of thickness be 6mm~10mm rubber sheet gasket, pad
Physical dimension should be identical with stiffness bearer.Load carrying capacity test step is further applied load as defined in this standard, detected number
According to for 375kN, and 30s is kept, manhole cover does not find crackle and breakage, and the detected manhole cover bearing capacity numerical value is
375kN, that is, it is qualified to be determined as.
Specific embodiment (three)
The proportioning of DMC-CF type high strength composites, is made up of the composition of following number：
(1) thermosetting resin 30；(2) styrene pellets 3；(3) styrene 6；(4) without alkali fiber chopped fiber 6；(5) carbon fiber length is fine
Dimension 1；(6) Staple carbon fibers 6；(7) tertiary fourth fat 0.1；(8) zinc stearate 1；(9) calcium hydroxide 0.2；(10) silica flour 25；(11) quartz sand
10；(12) high-calcium powder 10；(13) pigment 0.2.
The DMC-CF type high strength composites of said ratio, are prepared in accordance with the following steps：
The first step：Each composition is weighed according to proportioning；
Second step：Liquid mixes；
Styrene pellets and styrene are mixed and pour into special-purpose stirring machine, stirring 60-120 minutes (are dissolved completely with particle
It is defined).
The compound of styrene pellets and styrene and thermosetting resin are poured into kneader respectively, add tertiary fourth fat stirring
Uniformly (10-15 minutes).
3rd step：The making of fluid mix, powder：
First zinc stearate, calcium hydroxide, pigment are poured into kneader and stirred, is subsequently poured into silica flour, quartz sand, height
Calcium powder, it is stirred for uniformly.
4th step：With the mixing without alkali fiber chopped fiber
The compound of 3rd step is added into no alkali fiber chopped fiber, stirs 5-10 minutes.
Note：Proportioning is using 350 liters of kneader as standard above.
5th step：Slurry makes
The fluid mix of second step is added into zinc stearate, calcium hydroxide, silica flour, pigment and pours into kneader stirring
It is even.
6th step：Well lid prefabricated skeleton
The slurry made of the 5th step, carbon fiber long fibre and Staple carbon fibers are added, then wrap steel skeleton completely
Wrap up in, be heated to solidifying.
During production, the well lid skeleton that the 6th step is made is put into the composite wood dough material that the above prepares and uses liquid
Press, one-shot forming is molded by HTHP.
Simultaneously also can use make by hand and other techniques make.
The finder charge inspection done with reference to standard GB/T/T23858-2009 specification to the bearing capacity of manhole cover
Survey.Method for testing and detecting：It is not less than 500kN loading equipemtn by application load, is placed on and meets standard-sized stiffness bearer
On pressurizeed, the stiffness bearer and detection well lid between should place one piece of thickness be 6mm~10mm rubber sheet gasket, pad
Physical dimension should be identical with stiffness bearer.Load carrying capacity test step is further applied load as defined in this standard, detected number
According to for 310kN, and 30s is kept, manhole cover does not find crackle and breakage, and the detected manhole cover bearing capacity numerical value is
310kN, that is, it is qualified to be determined as.
Specific embodiment (four)
The proportioning of DMC-CF type high strength composites, is made up of the composition of following number：
(1) thermosetting resin 20；(2) styrene pellets 6；(3) styrene 4；(4) carbon cloth 3；(5) carbon fiber long fibre 1；⑹
Staple carbon fibers 6；(7) tertiary fourth fat 0.1；(8) zinc stearate 1；(9) calcium hydroxide 0.2；(10) flyash 15；(11) quartz sand 15；⑿
High-calcium powder 10；(13) pigment 0.1.
The DMC-CF type high strength composites of said ratio, are prepared in accordance with the following steps：
The first step：Each composition is weighed according to proportioning；
Second step：Liquid mixes
Styrene pellets and styrene are mixed and pour into special-purpose stirring machine, stirring 60-120 minutes (are dissolved completely with particle
It is defined).
The compound of styrene pellets and styrene and thermosetting resin are poured into kneader respectively, add tertiary fourth fat stirring
Uniformly (10-15 minutes).
3rd step：The preparation of fluid mix, powder
First zinc stearate, calcium hydroxide, pigment are poured into kneader and stirred, be subsequently poured into silica flour, quartz sand and
High-calcium powder, it is stirred for uniformly.
4th step：With the mixing of Staple carbon fibers
The compound that 3rd step obtains is added into Staple carbon fibers, stirs 5-10 minutes.
Note：Proportioning is using 350 liters of kneader as standard above.
5th step：Slurry makes
Zinc stearate, calcium hydroxide, silica flour and pigment is added to pour into kneader stirring the fluid mix of second step equal
It is even.
6th step：Carbon cloth and the long stapled preimpregnation of carbon fiber
Carbon cloth and carbon fiber long fibre are immersed in the slurry of the 5th step making, until slurry by carbon cloth and
Carbon fiber long fibre permeates.
After slurry, carbon cloth and carbon fiber long fibre prepreg have been prepared, pack.Needed in the environment of≤20 DEG C
Used in 10 days.
Manufacture manhole cover when, by carbon cloth be mainly three layers of upper, middle and lower (or only wherein one layer) be distributed in well lid or
Surface；Carbon fiber long fibre prepreg can prefabricated carbon fiber reinforcement or the internal structure for being directly applied to well lid reinforcement muscle portion
Point；Staple carbon fibers are then distributed in composite wood dough material.Composite wood dough material is filled in well lid die cavity, with above-mentioned carbon
Fiber cloth or alkali-free fiber cloth prepreg and carbon fiber long fibre combine integral without alkali fiber long fibre prepreg.The DMC-
The manufacture craft of CF type high-strength composite material manhole covers uses hydraulic press, is molded one-shot forming by HTHP, is one
The new environment-friendly products of kind.Simultaneously also can use make by hand and other techniques make.
Finder charge detection is carried out to the bearing capacity of manhole cover with reference to standard GB/T/T23858-2009 specification.
Method for testing and detecting is：It is not less than 500kN loading equipemtn by application load, is placed on and meets on standard-sized stiffness bearer
Pressurizeed, the rubber sheet gasket that one piece of thickness is 6mm~10mm, the outer rim of pad are placed between the stiffness bearer and detection well lid
Size should be identical with stiffness bearer.Load carrying capacity test step is further applied load as defined in this standard, and detected data are
350kN, and 30s is kept, manhole cover does not find crackle and breakage, and the detected manhole cover bearing capacity numerical value is
350kN, that is, it is qualified to be determined as.
Specific embodiment (five)
The proportioning of DMC-CF type high strength composites, is made up of the composition of following number：
(1) thermosetting resin 40；(2) styrene pellets 3；(3) styrene 8；(4) alkali-free fiber cloth 1；(5) without alkali fiber long fibre
5；(6) without alkali fiber chopped fiber 6；(7) tertiary fourth fat 0.3；(8) zinc stearate 2；(9) calcium hydroxide 0.4；(10) flyash 25；(11) quartz sand
10；(12) high-calcium powder 20；(13) pigment 0.3.
The DMC-CF type high strength composites of said ratio, are prepared in accordance with the following steps：
The first step：Each composition is weighed according to proportioning；
Second step：Liquid mixes
Styrene pellets and styrene are mixed and pour into special-purpose stirring machine, stirring 60-120 minutes (are dissolved completely with particle
It is defined).
The compound of styrene pellets and styrene and thermosetting resin are poured into kneader respectively, add tertiary fourth fat stirring
Uniformly (10-15 minutes).
3rd step：The preparation of fluid mix, powder
First zinc stearate, calcium hydroxide, pigment are poured into kneader and stirred, be subsequently poured into silica flour, quartz sand and
High-calcium powder, it is stirred for uniformly.
4th step：With the mixing of Staple carbon fibers
The compound that 3rd step obtains is added into Staple carbon fibers, stirs 5-10 minutes.
Note：Proportioning is using 350 liters of kneader as standard above.
5th step：Slurry makes
Zinc stearate, calcium hydroxide, silica flour and pigment is added to pour into kneader stirring the fluid mix of second step equal
It is even.
6th step：Carbon cloth and the long stapled preimpregnation of carbon fiber
Carbon cloth and carbon fiber long fibre are immersed in the slurry of the 5th step making, until slurry by carbon cloth and
Carbon fiber long fibre permeates.
After slurry, carbon cloth and carbon fiber long fibre prepreg have been prepared, pack.Needed in the environment of≤20 DEG C
Used in 10 days.
Manufacture manhole cover when, by carbon cloth be mainly three layers of upper, middle and lower (or only wherein one layer) be distributed in well lid or
Surface；Carbon fiber long fibre prepreg can prefabricated carbon fiber reinforcement or the internal structure for being directly applied to well lid reinforcement muscle portion
Point；Staple carbon fibers are then distributed in composite wood dough material.Composite wood dough material is filled in well lid die cavity, with above-mentioned carbon
Fiber cloth or alkali-free fiber cloth prepreg and carbon fiber long fibre combine integral without alkali fiber long fibre prepreg.The DMC-
The manufacture craft of CF type high-strength composite material manhole covers uses hydraulic press, is molded one-shot forming by HTHP, is one
The new environment-friendly products of kind.Simultaneously also can use make by hand and other techniques make.
Finder charge detection is carried out to the bearing capacity of manhole cover with reference to standard GB/T/T23858-2009 specification.
Method for testing and detecting is：It is not less than 500kN loading equipemtn by application load, is placed on and meets on standard-sized stiffness bearer
Pressurizeed, the rubber sheet gasket that one piece of thickness is 6mm~10mm, the outer rim of pad are placed between the stiffness bearer and detection well lid
Size should be identical with stiffness bearer.Load carrying capacity test step is further applied load as defined in this standard, and detected data are
300kN, and 30s is kept, manhole cover does not find crackle and breakage, and the detected manhole cover bearing capacity numerical value is
300kN, that is, it is qualified to be determined as.
By using above-mentioned technical proposal disclosed by the invention, following beneficial effect has been obtained：The embodiment of the present invention carries
The DMC-CF types high strength composite of confession and its application in manhole cover, wherein, including carbon fibre material composition
DMC-CF type high strength composites, there is following performance：Lightweight, specific strength are high, anti-seismic performance is strong, designability is strong, anti-tired
The chemicals burn intos such as labor performance is good, high temperature resistant, acid and alkali-resistance are anti-aging, good insulating, arc resistance can good, proof voltage, higher
Mechanical performance, fail-safety is good, bearing capacity is strong, high accuracy, low-expansion coefficient, the anti-flammability that weatherability is strong, enough, mould proof
Property, water-fast, oil resistant, non-corrosive, damping noise reduction be good, anti-sound, bounce-proof, anti-theft height, easy coloring, bright in luster, attractive in appearance
Durable, environmental protection and energy saving, pollution-free, installation is convenient, pliability is good, strong adaptability, thermodynamic property is excellent, is easy to large area whole
It is body formed, non-maintaining；Apply it in the preparation of manhole cover, solve traditional cast iron well lid, or it is of the prior art
The manhole cover produced problem in use that nonmetallic composite makes, not only reduce and pollute with national energy-saving emission reduction
Consumption reduction, persistently the fundamental state policy of improvement environment and national industrial policies match completely, and simultaneously also with country " with modeling
Dai Gang " fundamental state policy matches completely.Accelerate to promote the popularization and application of advanced composite material (ACM) for country, to innovate power, matter
Amount power, has very great meaning.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
Depending on protection scope of the present invention.
Claims (7)
1. a kind of DMC-CF types high strength composite, it is characterised in that be made up of the composition of following number：Thermosetting resin
20-40, styrene pellets 3-6, styrene 4-8, carbon cloth or alkali-free fiber cloth 1-3, carbon fiber long fibre or without alkali fiber
Long fibre 1-5, Staple carbon fibers or without alkali fiber chopped fiber 6-15, tree fourth fat 0.1-0.3, zinc stearate 1-2, calcium hydroxide
0.2-0.4, silica flour or flyash 15-25, quartz sand 10-15, high-calcium powder 10-20, pigment 0.1-0.3.
2. DMC-CF types high strength composite according to claim 1, it is characterised in that by following number into packet
Into：(1) thermosetting resin 35；(2) styrene pellets 5；(3) styrene 6；(4) carbon cloth 3；(5) carbon fiber long fibre 3；(6) carbon is fine
Tie up chopped fiber 15；(7) tertiary fourth fat 0.1；(8) zinc stearate 1；(9) calcium hydroxide 0.2；(10) silica flour 20；(11) quartz sand 10；(12) high calcium
Powder 10；(13) pigment 0.2.
3. DMC-CF types high strength composite according to claim 1, it is characterised in that by following number into packet
Into：(1) thermosetting resin 33；(2) styrene pellets 5；(3) styrene 6；(4) alkali-free fiber cloth 3；(5) without alkali fiber long fibre 5；⑹
Staple carbon fibers 6；(7) tertiary fourth fat 0.1；(8) zinc stearate 2；(9) calcium hydroxide 0.2；(10) silica flour 25；(11) quartz sand 15；⑿
High-calcium powder 10；(13) pigment 0.2.
4. the preparation method of the DMC-CF type high strength composites as described in claim any one of 1-3, it is characterised in that bag
Include following steps：
S1, each composition is weighed according to proportioning；
S2, styrene pellets and styrene are mixed into 60-120 minutes to particle and are completely melt, obtain the first compound, and
First compound is poured into kneader together with thermosetting resin, and adds tree fourth fat, zinc stearate, calcium hydroxide and pigment
Stir, obtain the second compound；
S3, the second compound is poured into silica flour or flyash, quartz sand and high-calcium powder respectively again and stirred in kneader,
Obtain the 3rd compound；
S4, the 3rd compound is stirred with Staple carbon fibers or without alkali fiber chopped fiber, obtains composite wood dough material；
S5, it is immersed in by carbon cloth or alkali-free fiber cloth, carbon fiber long fibre or without alkali fiber long fibre in the second compound,
Until the second compound permeates completely by carbon cloth or alkali-free fiber cloth, carbon fiber long fibre or without alkali fiber long fibre, obtain
To carbon cloth or alkali-free fiber cloth prepreg, carbon fiber long fibre or without alkali fiber long fibre prepreg.
5. application of a kind of DMC-CF types high strength composite in manhole cover, it is characterised in that the DMC-CF types are high
Strength composite materials are the DMC-CF type high strength composites prepared using the method described in claim 4.
A kind of 6. manhole cover, it is characterised in that the DMC-CF type high-strength composites prepared using the method described in claim 4
Material is prepared.
7. manhole cover as claimed in claim 6, it is characterised in that on carbon cloth or alkali-free the fiber cloth prepreg point
In the lower three layers surface, middle part and the back side for being layed in well lid respectively, if or being only layed in the surface of well lid according to one layer and dried layer；
The carbon fiber long fibre or the reinforcement part being arranged on without alkali fiber long fibre prepreg inside well lid；The composite
Group's material is filled in well lid die cavity, fine with above-mentioned carbon cloth or alkali-free fiber cloth prepreg and carbon fiber long fibre or alkali-free
Long fibre prepreg is tieed up with reference to integral.
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| CN201710657862.5A CN107418242A (en) | 2017-08-03 | 2017-08-03 | DMC CF types high strength composites and its application in manhole cover |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110014542A (en) * | 2019-04-17 | 2019-07-16 | 安徽省飞龙新型材料有限公司 | Compound resin is molded sewage-collecting well well seat production technology |
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|---|---|---|---|---|
| CN101089300A (en) * | 2007-07-05 | 2007-12-19 | 吕运征 | Method for producing manhole cover |
| CN101906784A (en) * | 2010-08-09 | 2010-12-08 | 江苏普利匡聚合物材料有限公司 | Non-metal material reinforced unsaturated polyester resin manhole cover |
| CN102359124A (en) * | 2011-08-01 | 2012-02-22 | 贵州省复合改性聚合物材料工程技术研究中心 | BMC (dough moulding compound) long glass fiber die pressing well cover |
| CN103804872A (en) * | 2014-02-11 | 2014-05-21 | 烟台泰和新材料股份有限公司 | Aramid fiber composite material and well lid prepared by utilizing same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101089300A (en) * | 2007-07-05 | 2007-12-19 | 吕运征 | Method for producing manhole cover |
| CN101906784A (en) * | 2010-08-09 | 2010-12-08 | 江苏普利匡聚合物材料有限公司 | Non-metal material reinforced unsaturated polyester resin manhole cover |
| CN102359124A (en) * | 2011-08-01 | 2012-02-22 | 贵州省复合改性聚合物材料工程技术研究中心 | BMC (dough moulding compound) long glass fiber die pressing well cover |
| CN103804872A (en) * | 2014-02-11 | 2014-05-21 | 烟台泰和新材料股份有限公司 | Aramid fiber composite material and well lid prepared by utilizing same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110014542A (en) * | 2019-04-17 | 2019-07-16 | 安徽省飞龙新型材料有限公司 | Compound resin is molded sewage-collecting well well seat production technology |
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Application publication date: 20171201 |