CN105155671A - Fireproof shock insulation rubber support - Google Patents
Fireproof shock insulation rubber support Download PDFInfo
- Publication number
- CN105155671A CN105155671A CN201510408200.5A CN201510408200A CN105155671A CN 105155671 A CN105155671 A CN 105155671A CN 201510408200 A CN201510408200 A CN 201510408200A CN 105155671 A CN105155671 A CN 105155671A
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- Prior art keywords
- fire
- parts
- insulation rubber
- shock insulation
- rubber bearing
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Links
- 238000009413 insulation Methods 0.000 title claims abstract description 80
- 229920001971 elastomer Polymers 0.000 title claims abstract description 58
- 230000035939 shock Effects 0.000 title claims abstract description 44
- 239000004744 fabric Substances 0.000 claims abstract description 32
- 239000003063 flame retardant Substances 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims abstract description 9
- 238000000576 coating method Methods 0.000 claims abstract description 9
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003292 glue Substances 0.000 claims description 27
- 239000003973 paint Substances 0.000 claims description 27
- 230000009970 fire resistant effect Effects 0.000 claims description 25
- 230000002265 prevention Effects 0.000 claims description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 244000043261 Hevea brasiliensis Species 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- 239000004902 Softening Agent Substances 0.000 claims description 4
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 4
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 4
- 235000019270 ammonium chloride Nutrition 0.000 claims description 4
- 229910000410 antimony oxide Inorganic materials 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- 239000006229 carbon black Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 4
- WHHGLZMJPXIBIX-UHFFFAOYSA-N decabromodiphenyl ether Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1OC1=C(Br)C(Br)=C(Br)C(Br)=C1Br WHHGLZMJPXIBIX-UHFFFAOYSA-N 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 229920003052 natural elastomer Polymers 0.000 claims description 4
- 229920001194 natural rubber Polymers 0.000 claims description 4
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 claims description 4
- 239000012188 paraffin wax Substances 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- UGACIEPFGXRWCH-UHFFFAOYSA-N [Si].[Ti] Chemical compound [Si].[Ti] UGACIEPFGXRWCH-UHFFFAOYSA-N 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 230000001681 protective effect Effects 0.000 abstract 1
- 238000010008 shearing Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 20
- 238000002955 isolation Methods 0.000 description 4
- 239000004566 building material Substances 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 208000034189 Sclerosis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000004079 fireproofing Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
Landscapes
- Building Environments (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a fireproof shock-insulation rubber support which comprises a shock-insulation rubber support and a heat-insulation fireproof assembly, wherein the protective rubber of the shock-insulation rubber support is rubber with good flame retardance and heat-insulation performance; the heat-insulating fireproof assembly is coated at two ends of the shock-insulating rubber support and sequentially comprises thick fireproof coating, high-temperature-resistant fireproof cloth and a high-temperature-resistant heat insulating layer from inside to outside, and the high-temperature-resistant heat insulating layer is overlapped and combined layer by layer and fixed on the periphery of the high-temperature-resistant fireproof cloth to form a shutter structure. The fireproof shock-insulation rubber support provided by the invention has good flame-retardant and heat-insulation effects. Even when an earthquake happens, the shock insulation rubber support can not only generate horizontal shearing deformation to protect the upper structure of a building, but also has better fireproof and heat insulation effects at ordinary times, and can better prevent the influence of a high-temperature heat source on the support when a fire disaster happens, thereby achieving the first-level fireproof requirement.
Description
Technical field
The present invention relates to the fire prevention of shock insulation rubber bearing, thermal insulation protection field, specifically a kind of fire prevention shock insulation rubber bearing.
Background technology
Current shock insulation rubber bearing has been widely used in the shock insulation engineering of building, bridge, equipment, significantly can alleviate earthquake to structural damage effect, ensures the safety of structure, people and property.But the fire resistance of shock insulation rubber bearing is elongated very poor, threaten the fire safety evaluating of isolation structure.Especially for the shock-insulation building space that personnel are more, fire-protection rating is higher, and General Requirements reaches one-level fire protection requirement, and only relies on shock insulation rubber bearing to prevent fires, and is difficult to reach one-level fire protection requirement.Existing a lot of fire protection construction is comparatively complicated, cost is higher, is difficult to promotion and application.Therefore a kind of fire prevention shock insulation rubber bearing is needed to solve the problems referred to above.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide a kind of simple and reasonable fire prevention shock insulation rubber bearing, it can effectively isolate thermal source and burning things which may cause a fire disaster, reaches one-level fire protection requirement.
Technical scheme of the present invention is achieved in that
A kind of fire prevention shock insulation rubber bearing, comprise shock insulation rubber bearing and be fixed on the junction plate of upper and lower buttress, the protecting glue of described shock insulation rubber bearing is fire-retardant, heat insulation protecting glue.Scribble low thermal conductivity thicker fireproof paint making a circle in the week of protecting glue, this coating has certain toughness, can the deformation with bearing shear strain, and paint thickness preferably controls at 2-6cm.
Preferably, the flame retardant rating of described protecting glue is A level or B1 level;
Preferably; the composition that described protecting glue contains and weight portion as follows: neoprene and/or natural rubber 35 ~ 55, white carbon or fire-retardant carbon black 5 ~ 10 parts, organophosphor system softening agent 2 ~ 5 parts; 5 ~ 20 parts, aluminium hydroxide; antimony oxide 3 ~ 8 parts, 2 ~ 7 parts, red phosphorus, decabromodiphenyl oxide 5 ~ 10 parts; chlorinated paraffin wax 5 ~ 10 parts; 5 ~ 10 parts, calcium carbonate, 3 ~ 7 parts, potter's clay, ammonium chloride 2 ~ 5 parts.
Around coating, a corral has low thermal conductivity fire resistant cloth, and fire resistant cloth thickness preferably controls at 2-6cm, and this material is flexible material, can the deformation with bearing shear strain.
Preferably, high-temperature resistant thermal insulating material is because being fixed on fire resistant cloth surrounding, and the composition shutter configuration that is layering, can, with self and then deformation during bearing shear strain, not hinder shock insulation rubber bearing horizontal shear to be out of shape the object of architecture protection superstructure.
Thicker fireproof paint is thicker steel structure fireproofing material, and fire resistance period can reach 3 hours.
Preferably, described fire resistant cloth can be ceramic fiber blanket and ceramic fiber cloth or high silica cloth, and this flameproof fabric has good anti-flaming thermal-insulation effect, and under 1000 DEG C of hot conditions Long-Time Service and comparatively large deformation, sclerosis and embrittlement do not occur itself.
High-temperature resistant thermal insulating material main component is silica and silicon titanium composite material, this material is nanometer micropore light material, the feature of its extremely low coefficient of thermal conductivity and extremely difficult combustion plays more effective heat-insulating flame-retardant effect, and there is not deformation in this material Long-Time Service self under 1000 DEG C of hot conditions, makes this material have good applying value.
The invention solves the defect existed in background technology, there is following beneficial effect:
One fire prevention shock insulation rubber bearing provided by the invention is simple and reasonable, and the protecting glue of shock insulation rubber bearing adopts anti-flaming thermal-insulation rubber, arrives A level or B1 level flame retardant rating, has good anti-flaming thermal-insulation effect.Heat-insulating, fire-preventing assembly is coated on outside protecting glue by thicker fireproof paint and fire resistant cloth and stops thermal source to bearing internal delivery, finally protects shock insulation rubber bearing further with the high temperature resistant heat insulation layer isolation burning things which may cause a fire disaster of shutter configuration and thermal source.Even if this shock insulation rubber bearing is when earthquake occurs; horizontal shear distortion architecture protection superstructure can not only be produced, and at ordinary times also there is good fire prevention, heat-blocking action, when fire occurs; high temperature heat source can be stoped preferably on the impact of bearing, reach one-level fire protection requirement.
Accompanying drawing explanation
Fig. 1 is one fire prevention shock insulation rubber bearing structural representation of the present invention.
Fig. 2 is the generalized section along A-A cross section in Fig. 1.
Fig. 3 is the partial enlarged view of Fig. 1 at B place.
Fig. 4 is the partial enlarged view of Fig. 1 at C place.
In figure: 1-shock insulation rubber bearing, 2-buttress, 3-flanged plate, 4-junction plate, 5-protecting glue, 6-thicker fireproof paint, 7-fire resistant cloth, heat insulation layer that 8-is high temperature resistant, 9-ironware, 10-screw.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, Figure 2 and Figure 4, a kind of fire prevention shock insulation rubber bearing, comprise shock insulation rubber bearing 1, buttress 2, flanged plate 3, junction plate 4, protecting glue 5, thicker fireproof paint 6, fire resistant cloth 7 and high temperature resistant heat insulation layer 8; The protecting glue 5 of shock insulation rubber bearing 1 is anti-flaming thermal-insulation rubber.The coated thicker fireproof paint 6 in outside of protecting glue 5; the coated fire resistant cloth 7 in periphery of thicker fireproof paint 6; the periphery of fire resistant cloth 7 is high temperature resistant heat insulation layer 8; and with the buttress 2 of the coated shock insulation rubber bearing of thicker fireproof paint 6 and the flanged plate 3 that is exposed in air, make whole bearing be subject to heat-insulating, fire-preventing protection.When earthquake occurs, this heat insulation shock insulation rubber bearing does not hinder shock insulation rubber bearing shear strain architecture protection superstructure.Be the thicker fireproof paint 6 that 1 ~ 3cm is thick at the flanged plate 3 be exposed in air, junction plate 4 and buttress 2 place coating thickness, thicker fireproof paint 6 is that powder-type coating and glue special are formed by certain proportioning stirring, pressing again by giving certain external force and certain hour makes it to be bonded on buttress 2, junction plate 4 and flanged plate 3, props up the quick effect of transmitting of rubber base 1 because this material thermal conductivity plays prevention heat compared with low energy by buttress 2, flanged plate 3 and junction plate 4 to shock insulation.
Anti-flaming thermal-insulation rubber 5 is fire-retardant, heat-proof quality is better, flame retardant rating is A level, incombustible material or B1 level nonflammable material (according to national standard Classification on burning behaviour for building materials, GB/T8625-88 Test method of difficultflammability for building materials and GB/T8626-88 Test method of flammability for building materials).
Make the embodiment 1 of protecting glue 5, the composition that protecting glue 5 contains and weight portion as follows: neoprene 30 parts, natural rubber 15 parts; fire-retardant carbon black 10 parts; organophosphor system softening agent 3 parts, 10 parts, aluminium hydroxide, antimony oxide 8 parts; 5 parts, red phosphorus; decabromodiphenyl oxide 8 parts, chlorinated paraffin wax 7 parts, 7 parts, calcium carbonate; 5 parts, potter's clay, ammonium chloride 3 parts.According to above-mentioned raw materials proportioning, this protecting glue 5 is fire-retardant, heat-proof quality better, and flame retardant rating reaches A level, incombustible material.
Make the embodiment 2 of protecting glue 5; the composition that protecting glue 5 contains and weight portion as follows: natural rubber 55 parts, fire-retardant carbon black 5 parts, organophosphor system softening agent 3 parts; 10 parts, aluminium hydroxide; antimony oxide 8 parts, 5 parts, red phosphorus, decabromodiphenyl oxide 8 parts; chlorinated paraffin wax 7 parts; 7 parts, calcium carbonate, 5 parts, potter's clay, ammonium chloride 5 parts.According to above-mentioned raw materials proportioning, this protecting glue 5 is fire-retardant, heat-proof quality better, and flame retardant rating reaches B1 level, nonflammable material.
The surrounding of anti-flaming thermal-insulation rubber 5 is thicker fireproof paint 6, and this coating is formed by certain proportioning stirring with glue special equally, and the pressing giving certain external force and certain hour equally makes it to be bonded in around protecting glue 5.Around thicker fireproof paint 6, be coated with fire resistant cloth 7, because flameproof fabric is flexible material, direct coated thicker fireproof paint 6, comes off fastening the preventing of fire resistant cloth 7 interface iron nail.This material thermal conductivity is lower, has anti-flaming thermal-insulation equally, effectively can stop the effect that heat inner layer is transmitted fast.
As shown in Figure 3, it is the high temperature resistant thermal insulation slab 8 of pole low thermal conductivity around fire resistant cloth, this thermal insulation slab is lightweight, low-durometer material, length just covers upper and lower flanged plate 3, and be layering from the bottom to top the formation coated fire resistant cloth 7 of shutter configuration and thicker fireproof paint 6, gap between often two-layer is within 1mm, and the every one deck of this light material all uses ironware 9 to be anchored in fire resistant cloth 7 and thicker fire-resistant coating for steel structure, and installs fixing with screw 10.Gap between high temperature resistant thermal insulation slab 8 and fire resistant cloth 7 is within 2mm.This shutter configuration that high temperature resistant thermal insulation slab 8 forms both can effectively stop heat to transmit to fire resistant cloth 7 and thicker fireproof paint 6; the effect effectively stoping heat to be transmitted by flanged plate 3 inner layer rubber is played again because length covers flanged plate 3; and this shutter can the deformation with bearing shear strain; thicker fireproof paint 6 and fire resistant cloth 7 are flexible material, and this structural fire protection heat-proof device does not hinder bearing to protect the effect of top-out structure yet when earthquake.
Principle of the present invention is: the protecting glue 5 of shock insulation rubber bearing 1 is designed to have fire-retardant and heat insulation protecting glue; carry out successively coated prevention heat transmission with thicker fireproof paint 6, fire resistant cloth 7, high temperature resistant heat insulation layer 8 again, reach the object of isolation thermal source and burning things which may cause a fire disaster further.This shock insulation rubber bearing 1 has better fire prevention, heat insulating function when every day use; Upper and lower buttress 2, be exposed to junction plate 4 in air and flanged plate 3 place is all coated with thicker fireproof paint 6; Be coated on thicker fireproof paint 6 outside protecting glue and fire resistant cloth 7 is flexible material, what be coated on the surrounding of fire resistant cloth 7 and fireproof paint is high-temperature resistant thermal insulating material, this material because of the composition shutter configuration that is layering can the deformation with bearing shear strain; Because the heat insulation shock insulation rubber bearing of the high temperature resistant thermal insulation slab composition of thicker fireproof paint 6, fire resistant cloth 7, shutter configuration can be out of shape and deformation with shock insulation rubber bearing horizontal shear, even if when earthquake, isolation rubber is not hindered to protect the object of superstructure yet; After earthquake terminates, as intactly in shock insulation rubber bearing 1 clad material still can play fire-proof function, as because of earthquake damage, only need change damaged location can recover fire-proof function.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a fire prevention shock insulation rubber bearing, comprise shock insulation rubber bearing (1) and heat-insulating, fire-preventing assembly, it is characterized in that, the protecting glue (5) of described shock insulation rubber bearing (1) is fire-retardant, the good rubber of heat-proof quality; Described heat-insulating, fire-preventing assembly is coated on shock insulation rubber bearing (1) two ends, is followed successively by thicker fireproof paint (6), fire resistant cloth (7) and high temperature resistant heat insulation layer (8) from the inside to the outside; Described high temperature resistant heat insulation layer (8) successively stack combinations is fixed on the periphery of fire resistant cloth (7), in shutter.
2. a kind of fire prevention shock insulation rubber bearing according to claim 1, it is characterized in that, the flame retardant rating of described protecting glue (5) is A level or B1 level.
3. a kind of fire prevention shock insulation rubber bearing according to claim 1, is characterized in that, the composition that described protecting glue (5) contains and weight portion as follows: neoprene and/or natural rubber 35 ~ 55 parts; white carbon or fire-retardant carbon black 5 ~ 10 parts; organophosphor system softening agent 2 ~ 5 parts, 5 ~ 20 parts, aluminium hydroxide, antimony oxide 3 ~ 8 parts; 2 ~ 7 parts, red phosphorus; decabromodiphenyl oxide 5 ~ 10 parts, chlorinated paraffin wax 5 ~ 10 parts, 5 ~ 10 parts, calcium carbonate; 3 ~ 7 parts, potter's clay, ammonium chloride 2 ~ 5 parts.
4. a kind of fire prevention shock insulation rubber bearing according to claim 1, it is characterized in that, described thicker fireproof paint (6) is thicker fire-resistant coating for steel structure, and coating thickness is 2cm ~ 6cm.
5. one fire prevention shock insulation rubber bearing according to claim 1, is characterized in that, described fire resistant cloth (7) is ceramic fiber blanket, ceramic fiber cloth or high silica cloth, its thickness is 2cm ~ 6cm.
6. one fire prevention shock insulation rubber bearing according to claim 1, it is characterized in that: described high temperature resistant heat insulation layer (8) is silica and silicon titanium nanometer micropore light composite material, described high temperature resistant heat insulation layer (8) successively superposes and is fixed on thicker fireproof paint (11) surrounding by ironware (9), distributes in shutter.
7. the one fire prevention shock insulation rubber bearing according to any one of claim 1 to 6, is characterized in that: the fire resistance period of described thicker fireproof paint (6) is not less than 3 hours.
8. the one fire prevention shock insulation rubber bearing according to any one of claim 1 to 6, is characterized in that: described shock insulation rubber bearing (1) is fixed on the buttress (2) at upper and lower two ends by flanged plate (3) and junction plate (4); Described protecting glue (5) surrounding, buttress (2), flanged plate (3) and junction plate (4) place are coated with thicker fireproof paint (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510408200.5A CN105155671B (en) | 2015-07-14 | 2015-07-14 | Fireproof shock insulation rubber support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510408200.5A CN105155671B (en) | 2015-07-14 | 2015-07-14 | Fireproof shock insulation rubber support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105155671A true CN105155671A (en) | 2015-12-16 |
| CN105155671B CN105155671B (en) | 2017-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510408200.5A Active CN105155671B (en) | 2015-07-14 | 2015-07-14 | Fireproof shock insulation rubber support |
Country Status (1)
| Country | Link |
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| CN (1) | CN105155671B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525698A (en) * | 2016-02-26 | 2016-04-27 | 云南震安减震科技股份有限公司 | Damping force adjustable fireproof viscoelastic damper |
| CN107386456A (en) * | 2017-09-21 | 2017-11-24 | 安徽新华学院 | A kind of shearing-type rubber vibration isolation seating concatenation type flameproof protection device |
| CN107605062A (en) * | 2017-09-14 | 2018-01-19 | 云南震安减震科技股份有限公司 | A kind of movable flameproof protection device for architectural vibration-insulation rubber supporting seat |
| CN107868290A (en) * | 2017-12-30 | 2018-04-03 | 海门市宏达铁路机车车辆配件有限公司 | A kind of flame-retardant rubber pipe and preparation method thereof |
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| US5546711A (en) * | 1995-05-26 | 1996-08-20 | Heller; Paul S. | Base isolator fire barrier system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525698A (en) * | 2016-02-26 | 2016-04-27 | 云南震安减震科技股份有限公司 | Damping force adjustable fireproof viscoelastic damper |
| CN107605062A (en) * | 2017-09-14 | 2018-01-19 | 云南震安减震科技股份有限公司 | A kind of movable flameproof protection device for architectural vibration-insulation rubber supporting seat |
| CN107386456A (en) * | 2017-09-21 | 2017-11-24 | 安徽新华学院 | A kind of shearing-type rubber vibration isolation seating concatenation type flameproof protection device |
| CN107386456B (en) * | 2017-09-21 | 2024-02-02 | 安徽新华学院 | Series type fireproof protection device for shearing type rubber vibration isolation support |
| CN107868290A (en) * | 2017-12-30 | 2018-04-03 | 海门市宏达铁路机车车辆配件有限公司 | A kind of flame-retardant rubber pipe and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN105155671B (en) | 2017-08-25 |
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