CN109534840A - A kind of preparation method of graphene modified pitch based composites road sound barrier - Google Patents

A kind of preparation method of graphene modified pitch based composites road sound barrier Download PDF

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CN109534840A
CN109534840A CN201811649411.8A CN201811649411A CN109534840A CN 109534840 A CN109534840 A CN 109534840A CN 201811649411 A CN201811649411 A CN 201811649411A CN 109534840 A CN109534840 A CN 109534840A
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sound barrier
graphene modified
road sound
modified pitch
based composites
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马开梅
何平伟
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Xinghua Precision Casting And Forging Industry Research Institute Co Ltd
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Xinghua Precision Casting And Forging Industry Research Institute Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
    • C04B35/80—Fibres, filaments, whiskers, platelets, or the like
    • C04B35/83—Carbon fibres in a carbon matrix
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/421—Boron
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/422—Carbon
    • C04B2235/425—Graphite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/48—Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6562—Heating rate
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6567—Treatment time

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Composite Materials (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Road Paving Structures (AREA)

Abstract

The invention discloses a kind of preparation method of graphene modified pitch based composites road sound barrier, this method are as follows: one, using short carbon fiber, powdered carbon, graphite powder, boron powder, pitch as main raw material(s), and add suitable grapheme material；Two, Carbon fibe mixture is configured by a certain percentage；Three, press curing forms；Four, charing process；Five, cold primer-oil dipping, curing and carbonization treatment；Six, after being machined, graphene modified pitch based composites road sound barrier is made.The present invention has the characteristics that charcoal/charcoal road sound barrier of high strength & high electric-conduction and high thermal conductivity as lubricant, the wearability of boron powder and graphene as reinforcement, graphite powder as skeleton, pitch carbon matrix, powdered carbon using Carbon fibe, with waterproof, fire prevention, anti-aging, impact resistance is good, with material low energy consumption, environmental protection, discarded rear no pollution to the environment, in use, the advantages that soundproof effect is good.

Description

A kind of preparation method of graphene modified pitch based composites road sound barrier
Technical field
The invention belongs to field of new materials, and in particular to a kind of corrosion-resistant, anti-aging, low-density composite highway sound-screen Barrier.
Background technique
Sound barrier is mainly used for the sound insulation and noise reducing of highway, highway, overhead composite road and other noise sources.It is divided into The reflection-type sound barrier of pure sound insulation, and the compound sound barrier that sound absorption is combined with sound insulation, the latter is more efficiently sound insulation side Method.It refers to the influence for mitigation driving noise to neighbouring resident and the wall structure by railway and roadside is set.With The continuous quickening of the high speed development of China's economic, urbanization process, the traffic side such as highway, railway, urban track traffic Formula is rapidly developed, these roads will inevitably pass through the residential area of population concentration when building, and generated traffic noise is given Work, life, the study of near roads resident brings certain interference.National environmental monitoring results show: road traffic is made an uproar City in sound there are about 17% belongs to the city category slight pollution of intermediate pollution, 49%, establishes sound barrier and solves traffic noise pollution Major way as urban road noise control.
It is inserted into a facility between sound source and recipient, so that Acoustic Wave Propagation is had a significant additional attenuation, to subtract The influence of noise in certain area where weak recipient, such facility are known as sound barrier.It is divided into traffic noise barrier, sets It is most using all types of sound barriers on standby sound attenuation noise barrier, industrial factory circle noise barrier, highway and highway Place.Sound barrier is mainly made of steel structural upright column and sound absorption screen board two parts, and column is the main bearing member of sound barrier, It is by bolt or is weldingly fixed on road anti-collision wall or the pre-embedded steel slab on track side；Felt is main sound insulation sound absorption Component, it is fixed in H-type column slot by high-strength spring clip, forms sound barrier.The design of sound barrier is more filled Point ground consider overhead super expressway, urban light rail, the wind load of subway, vehicular traffic shock it is safe and it is round-the-clock it is outdoor prevent Rotten problem.Its attractive appearance, production is exquisite, transport, easy for installation, low cost, long service life, especially suitable for overhead The antinoise of super expressway and urban light rail, subway uses, and is the optimal sound insulation and noise reducing facility of modern city.To sound barrier Requirement mainly have the following aspects: (1) oise insulation factor is big；(2) acoustic absorptivity is high；(3) weathering durability；(4) light, sound-absorbing Plate series of products have the characteristics that can reduce the weight-bearing load of elevated railway, viaduct from heavy and light, can reduce structural cost；(5) prevent Fire；(6) high-intensitive；(7) durable, product design fully considers that the wind load of road, the shock safety of vehicular traffic and full gas are false Outdoor anti-corrosion.
Existing road sound barrier material mostly uses organic and inorganic fiber, sponge, foamed board etc. to be made, and has the disadvantages that Waterproof, fire prevention, anti-aging, impact resistance is poor, timber height energy consumption not environmentally, it is discarded after have pollution to environment, in use process In, soundproof effect is poor, while can not block the noise of lower frequency, causes practical function bad.Therefore, it is asked for solution is above-mentioned Topic provides the new technical solution of one kind and carrys out meet demand.
Summary of the invention
The purpose of the present invention is in view of the deficiencies of the prior art, to solve existing heavy-load automobile brake block heat transmitting and heat-resisting Property poor, the unstable technical problem for causing brake block coefficient of friction unstable of material, have using graphene high-intensitive, highly conductive The characteristics of property and high thermal conductivity, and good a kind of simple process, densification effects, high mechanical strength, wearability and heat-resisting are provided Excellent charcoal/charcoal heavy-load automobile brake block the preparation method of property.
To achieve the goals above, the technical scheme adopted by the invention is that: a kind of graphene modified pitch base composite wood Expect the preparation method of road sound barrier, it is characterised in that method includes the following steps:
Step 1: suitable stone is added as main raw material(s) using short carbon fiber, powdered carbon, graphite powder, boron powder, pitch Black alkene material.
Step 2: being stirred in agitator tank after material in step 1 is weighed in proportion, mixing time 1h- 10h。
Step 3: mixture in step 2 is placed in steel mold, the compression moulding on multidaylight press, and pressure is 0.5Mpa-40 Mpa。
Step 4: the semi-finished product of compression moulding in step 3 being placed in retort and carry out charing process, and carbonization temperature is 700℃-1000℃。
Step 5: the semi-finished product after charing process in step 4 are entered in Asphalt tank, carry out impregnating by pressure, and pressure is Dipping 2h-10h is carried out under 0.5MPa-4.0MPa, then carries out curing process, and solidification temperature is 100 DEG C -180 DEG C, is turned after coming out of the stove Retort charing process, carbonization temperature are 700 DEG C -1000 DEG C.
Step 6: graphene modified pitch base is made after over mechanical processing in the composite body that step 5 is come out of the stove Composite highway sound barrier.
A kind of preparation method of above-mentioned graphene modified pitch based composites road sound barrier, which is characterized in that step Short carbon fiber length described in rapid one is 2mm-20mm, and the granular size of powdered carbon is 100 mesh hereinafter, the particle of graphite powder is big Small is 100 mesh hereinafter, boron powder particles size is 500 mesh hereinafter, pitch is coal tar pitch or asphalt.
A kind of preparation method of above-mentioned graphene modified pitch based composites road sound barrier, which is characterized in that step Carbon fibe weight percent described in rapid two is 10wt%-60wt%, and powdered carbon weight percent is 5wt%-15wt%, graphite powder weight Amount percentage is 1wt%-10wt%, and boron powder weight percent is 0.1wt%-5wt%, and pitch weight percent is 10wt%-50wt%, Graphene additive amount is 0.05 wt%-1.0 wt%.
A kind of preparation method of above-mentioned graphene modified pitch based composites road sound barrier, which is characterized in that step Press curing technique described in rapid three, heating rate are 5 DEG C/h-50 DEG C/h, and solidification temperature is 100 DEG C -180 DEG C, when heat preservation Between be 0.5h-5.0h.
A kind of preparation method of above-mentioned graphene modified pitch based composites road sound barrier, which is characterized in that step Carbonization heating rate described in rapid four is 5 DEG C/h-50 DEG C/h, soaking time 1.0h-5.0h.
A kind of preparation method of above-mentioned graphene modified pitch based composites road sound barrier, which is characterized in that step Solidification heating rate described in rapid five be 5 DEG C/h-50 DEG C/h, soaking time 1.0h-5.0h, carbonization heating rate be 2 DEG C/ H-30 DEG C/h, soaking time 1.0h-5.0h.
Compared with the prior art, the present invention has the following advantages:
1, compared with the technology of preparing of conventional road sound barrier, the present invention is using Carbon fibe as skeleton, pitch carbon matrix, powdered carbon As lubricant, the wearability of boron powder and graphene there is high strength & high electric-conduction and height to lead as reinforcement, graphite powder The features such as hot property, charcoal/charcoal road sound barrier of preparation, with waterproof, fire prevention, anti-aging, impact resistance is good, low with material Energy consumption, environmental protection, it is discarded after no pollution to the environment, in use, the advantages that soundproof effect is good.
2, present invention process is simple, and soundproof effect is good, and is easy to produce in enormous quantities, can according to it is different require by material with Meaning carries out processing excision forming.
Detailed description of the invention
Fig. 1 is the process flow diagram that the present invention prepares graphene modified pitch based composites road sound barrier.
Specific embodiment
Embodiment 1
Step 1: suitable stone is added as main raw material(s) using short carbon fiber, powdered carbon, graphite powder, boron powder, pitch Black alkene material, short carbon fiber length are 2mm, and the granular size of powdered carbon is 120 mesh, and the granular size of graphite powder is 120 mesh, boron Powder particles size is 600 mesh, and pitch is coal tar pitch.
Step 2: being stirred in agitator tank after material in step 1 is weighed in proportion, Carbon fibe weight percent Than for 20wt%, powdered carbon weight percent is 20wt%, graphite powder weight percent is 10wt%, and boron powder weight percent is 5wt%, Pitch weight percent is 44.95wt%, and graphene additive amount is 0.05 wt%, mixing time 1h.
Step 3: mixture in step 2 is placed in steel mold, the compression moulding on multidaylight press, and pressure is 0.5Mpa, solidification heating rate are 5 DEG C/h, and solidification temperature is 100 DEG C, soaking time 0.5h.
Step 4: the semi-finished product of compression moulding in step 3 being placed in retort and carry out charing process, and carbonization temperature is 700 DEG C, carbonization heating rate is 5 DEG C/h, soaking time 1.0h.
Step 5: the semi-finished product after charing process in step 4 are entered in Asphalt tank, carry out impregnating by pressure, and pressure is Dipping 2h is carried out under 0.5MPa, then carries out curing process, and solidification temperature is 100 DEG C, and solidification heating rate is 5 DEG C/h, heat preservation Time is 1.0h, turns retort charing process after coming out of the stove, and carbonization temperature is 700 DEG C, and carbonization heating rate is 2 DEG C/h, when heat preservation Between be 1.0h.
Step 6: graphene modified pitch base is made after over mechanical processing in the composite body that step 5 is come out of the stove Composite highway sound barrier.
Embodiment 2
Step 1: suitable stone is added as main raw material(s) using short carbon fiber, powdered carbon, graphite powder, boron powder, pitch Black alkene material, short carbon fiber length are 10mm, and the granular size of powdered carbon is 200 mesh, and the granular size of graphite powder is 200 mesh, Boron powder particles size is 700 mesh, and pitch is asphalt.
Step 2: being stirred in agitator tank after material in step 1 is weighed in proportion, Carbon fibe weight percent Than for 30wt%, powdered carbon weight percent is 15wt%, graphite powder weight percent is 5wt%, and boron powder weight percent is 3wt%, Pitch weight percent is 46.9wt%, and graphene additive amount is 0.1wt%, mixing time 5h.
Step 3: mixture in step 2 is placed in steel mold, the compression moulding on multidaylight press, pressure 10Mpa, Solidification heating rate is 15 DEG C/h, and solidification temperature is 150 DEG C, soaking time 2h.
Step 4: the semi-finished product of compression moulding in step 3 being placed in retort and carry out charing process, and carbonization temperature is 800 DEG C, carbonization heating rate is 15 DEG C/h, soaking time 2.0h.
Step 5: the semi-finished product after charing process in step 4 are entered in Asphalt tank, carry out impregnating by pressure, and pressure is Dipping 5h is carried out under 1.5MPa, then carries out curing process, and solidification temperature is 150 DEG C, and solidification heating rate is 20 DEG C/h, heat preservation Time is 2.0h, turns retort charing process after coming out of the stove, and carbonization temperature is 800 DEG C, and carbonization heating rate is 20 DEG C/h, when heat preservation Between be 2.0h.
Step 6: graphene modified pitch base is made after over mechanical processing in the composite body that step 5 is come out of the stove Composite highway sound barrier.
Embodiment 3
Step 1: suitable stone is added as main raw material(s) using short carbon fiber, powdered carbon, graphite powder, boron powder, pitch Black alkene material, short carbon fiber length are 20mm, and the granular size of powdered carbon is 300 mesh, and the granular size of graphite powder is 300 mesh, Boron powder particles size is 800 mesh, and pitch is asphalt.
Step 2: being stirred in agitator tank after material in step 1 is weighed in proportion, Carbon fibe weight percent Than for 50wt%, powdered carbon weight percent is 8wt%, graphite powder weight percent is 1wt%, and boron powder weight percent is 2wt%, drip Green weight percent is 38wt%, and graphene additive amount is 1.0 wt%, mixing time 10h.
Step 3: mixture in step 2 is placed in steel mold, the compression moulding on multidaylight press, pressure 40Mpa, Solidification heating rate is 50 DEG C/h, and solidification temperature is 180 DEG C, soaking time 5h.
Step 4: the semi-finished product of compression moulding in step 3 being placed in retort and carry out charing process, and carbonization temperature is 1000 DEG C, carbonization heating rate is 50 DEG C/h, soaking time 5.0h.
Step 5: the semi-finished product after charing process in step 4 are entered in Asphalt tank, carry out impregnating by pressure, and pressure is Dipping 10h is carried out under 4.0MPa, then carries out curing process, and solidification temperature is 180 DEG C, and solidification heating rate is 50 DEG C/h, is protected The warm time is 5.0h, turns retort charing process after coming out of the stove, and carbonization temperature is 1000 DEG C, and carbonization heating rate is 30 DEG C/h, is protected The warm time is 5.0h.
Step 6: graphene modified pitch base is made after over mechanical processing in the composite body that step 5 is come out of the stove Composite highway sound barrier.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention Technical spirit any simple modification, change and equivalent structure transformation to the above embodiments, still fall within skill of the present invention In the protection scope of art scheme.

Claims (6)

1. a kind of preparation method of graphene modified pitch based composites road sound barrier, it is characterised in that this method include with Lower step:
Step 1: suitable stone is added as main raw material(s) using short carbon fiber, powdered carbon, graphite powder, boron powder, pitch Black alkene material；
Step 2: being stirred in agitator tank after material in step 1 is weighed in proportion, mixing time 1h-10h；
Step 3: mixture in step 2 is placed in steel mold, the compression moulding on multidaylight press, pressure 0.5Mpa-40 Mpa；
Step 4: the semi-finished product of compression moulding in step 3 being placed in retort and carry out charing process, carbonization temperature 700 ℃-1000℃；
Step 5: the semi-finished product after charing process in step 4 are entered in Asphalt tank, carry out impregnating by pressure, and pressure is Dipping 2h-10h is carried out under 0.5MPa-4.0MPa, then carries out curing process, and solidification temperature is 100 DEG C -180 DEG C, is turned after coming out of the stove Retort charing process, carbonization temperature are 700 DEG C -1000 DEG C；
Step 6: it is compound that graphene modified pitch base is made after over mechanical processing in the composite body that step 5 is come out of the stove Material road sound barrier.
2. a kind of preparation method of graphene modified pitch based composites road sound barrier according to claim 1, It is characterized in that, short carbon fiber length described in step 1 is 2mm-20mm, and the granular size of powdered carbon is 100 mesh hereinafter, stone The granular size of ink powder is 100 mesh hereinafter, boron powder particles size is 500 mesh hereinafter, pitch is coal tar pitch or asphalt.
3. a kind of preparation method of graphene modified pitch based composites road sound barrier according to claim 1, It is characterized in that, Carbon fibe weight percent described in step 2 is 10wt%-60wt%, and powdered carbon weight percent is 5wt%- 15wt%, graphite powder weight percent are 1wt%-10wt%, and boron powder weight percent is 0.1wt%-5wt%, pitch weight percent For 10wt%-50wt%, graphene additive amount is 0.05 wt%-1.0 wt%.
4. a kind of preparation method of graphene modified pitch based composites road sound barrier according to claim 1, Be characterized in that, press curing technique described in step 3, heating rate be 5 DEG C/h-50 DEG C/h, solidification temperature be 100 DEG C- 180 DEG C, soaking time 0.5h-5.0h.
5. a kind of preparation method of graphene modified pitch based composites road sound barrier according to claim 1, It is characterized in that, carbonization heating rate described in step 4 is 5 DEG C/h-50 DEG C/h, soaking time 1.0h-5.0h.
6. a kind of preparation method of graphene modified pitch based composites road sound barrier according to claim 1, It is characterized in that, solidification heating rate described in step 5 is 5 DEG C/h-50 DEG C/h, soaking time 1.0h-5.0h, and charing rises Warm rate is 2 DEG C/h-30 DEG C/h, soaking time 1.0h-5.0h.
CN201811649411.8A 2018-12-30 2018-12-30 A kind of preparation method of graphene modified pitch based composites road sound barrier Withdrawn CN109534840A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112179936A (en) * 2020-10-12 2021-01-05 南京林业大学 Method for preparing nano graphene oxide modified asphalt and evaluating anti-aging performance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112179936A (en) * 2020-10-12 2021-01-05 南京林业大学 Method for preparing nano graphene oxide modified asphalt and evaluating anti-aging performance

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Application publication date: 20190329