CN106192815B - A kind of anti-corrosion flexible safety fence - Google Patents
A kind of anti-corrosion flexible safety fence Download PDFInfo
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- CN106192815B CN106192815B CN201610614700.9A CN201610614700A CN106192815B CN 106192815 B CN106192815 B CN 106192815B CN 201610614700 A CN201610614700 A CN 201610614700A CN 106192815 B CN106192815 B CN 106192815B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
- E01F15/0453—Rails of materials other than metal or concrete, e.g. wood, plastics; Rails of different materials, e.g. rubber-faced metal profiles, concrete-filled steel tubes
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- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The present invention relates to a kind of anti-corrosion flexible safety fence, including protective rail plate, column and obstruction block composition, the guardrail board is combined by flexible outer layer and support sandwich layer；The column is combined by flexible outer layer and middle support layer, and the flexible outer layer of the protective rail plate is ultra-high molecular weight polyethylene or modified ultra-high molecular weight polyethylene, and the support sandwich layer of the protective rail plate is aramid belt or steel wire；The flexible outer layer of the column is ultra-high molecular weight polyethylene or modified ultra-high molecular weight polyethylene, and the middle support layer of the column is expanded metal lath.Flexible safety fence plate, column and obstruction block provided by the invention are coextruded one-pass molding using modified ultra-high molecular weight polyethylene and steel wire or aramid belt, and the flexible outer layer of flexible safety fence plate and column can absorb collision energy, reduction or even avoid secondary injury.
Description
Technical field
The present invention relates to guardrail fields, and in particular to a kind of anti-corrosion flexible safety fence and preparation method thereof.
Background technique
The safety of guardrail is one of most important performance, but travel on a highway have different type, different tonnage,
Where accident occurs for the vehicle of different speeds, and it is also unknown to generate much energy for collision every time.China's turn pike
More than 160,000 kilometers.Department of Transportation remodifies publication " highway traffic safety facilities design specification " and " highway for 2006
Traffic safety facilities construction technique normalizing " in specific requirement and rule especially are being proposed using various aspects to freeway guardrail
It is fixed.
The shortcomings that used rigid concrete guardrail, semi-rigid corrugated beam barrier, is: hardly deforming, hurts to vehicle occupant
Evil is big；Hard and soft phase is simultaneous, can absorb energy；
The shortcomings that used flexible cable guardrail is: deformation is big, absorption energy is big, and hardness, the intensity of steel guardrail are very big,
It is easy to cause secondary injury to vehicle, occupant in collision.
The shortcomings that current steel guardrail, is: needed replacing in 30-50 years 3-5 times, to consume a large amount of human and material resources and
Financial resources.As the extension maintenance cost of time increases year by year, the waste of social resources is caused.Steel guardrail easily corrodes.Especially
That coastal and humid area is even more serious, as time went on, the maintenance cost of anti-corrosion replacement increase year by year, life-cycle costing meeting
It is increasing, to maintenance unit and country result in waste of resources.
Two weakness of current supra polymer material production guardrail: 1 poor rigidity: being not so good as steel material, but flexibility can make up,
2, cutting performance is weak: but it is round and smooth body, not sharp place that automobile, which has identical general character, appearance all, and the probability directly cut is very
It is low.
Summary of the invention
The object of the invention is that in view of the above shortcomings of the prior art, a kind of anti-corrosion flexible safety fence is provided, they
Composition is the guardrail board and column i.e. using the manufacture of ultra-high molecular weight polyethylene (UPE) modified material, is changed with macromolecule polyurethane
Property material manufacture obstruction block.It solves the problems, such as that existing guardrail service life is short, safety is low, perishable, fugitive color, reaches
It defeats a force with a tenderness, the direction of decomposing force, improves safety, realizes effectively interception, absorb collision energy, reduce collision accident to vehicle
, especially to the extent of injury of occupant, causality loss is reduced, while improving the rigidity and shearing property of supra polymer material
Energy.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of anti-corrosion flexible safety fence, including protective rail plate, column and obstruction block, the guardrail board are by flexible outer layer and branch
Support core layer is combined；The column is combined by flexible outer layer and middle support layer, the flexibility of the protective rail plate
Outer layer is ultra-high molecular weight polyethylene or modified ultra-high molecular weight polyethylene, the support sandwich layer of the protective rail plate be aramid belt or
Steel wire；The flexible outer layer of the column is ultra-high molecular weight polyethylene or modified ultra-high molecular weight polyethylene, and described is vertical
The middle support layer of column is expanded metal lath.
The modified ultra-high molecular weight polyethylene of the flexible outer layer of the flexible outer layer and column of the protective rail plate forms and matter
It is as follows to measure part: 100 parts of supra polymer molecular weight polyethylene, 8 parts -12 parts of fire retardant, 1-1.5 parts of age resister, UV resistant agent
1-1.2 parts, 0.8-1.4 parts of antioxidant, 10 parts of glass fibre, 0.3 part of color masterbatch, 1-3 parts of silane coupling agent.
The flexible outer layer of the guardrail board is combined with support sandwich layer one-pass molding；The column be by flexibility outside
Layer is combined with middle support layer one-pass molding.
The obstruction block is made of modified polyurethane (TPU), and the composition and mass parts of the modified polyurethane are as follows:
TPU-68D:100 parts of polyurethane, 8 parts -12 parts of fire retardant, 1-1.5 parts of age resister, 1-1.2 parts of UV resistant agent, antioxidant
0.8-1.4 parts, 0.3 part of color masterbatch, 10 parts of glass fibre, 1-3 parts of silane coupling agent.The UV resistant agent be selected from hindered amines,
At least one of benzotriazole.The mould inhibitor is selected from least one of zinc borate, Bravo, folpet.Described is anti-
Aging agent is selected from one or both of hydrogen donors such as Hinered phenols, secondary arylamine.
A kind of production method on anti-corrosion flexible safety fence column, its step are as follows: after making guardrail board, column and obstruction block respectively
Three is assembled:
(1) guardrail board the production method is as follows:
A. by silane coupling agent 1-5 parts as stated in claim 2 with distilled water and ethyl alcohol dilution after solution with it is fire-retardant
8 parts -12 parts of agent, 1-1.5 parts of age resister, 1-1.2 parts of UV resistant agent, 0.8-1.4 parts of antioxidant, 10 parts of glass fibre, color
Female 0.3 part, 1-3 parts of silane coupling agent are sufficiently mixed, dry, afterwards with 100 parts of addition twin-screw extrusions of ultra-high molecular weight polyethylene
Extruding pelletization in machine, extrusion temperature are 130-230 DEG C, extruded velocity 5-15Hz, extrusion pressure 25-45Mpa；
B. aramid belt is fixed with wrapping machine, the particulate material obtained in step a is transported to screw co-extruder group
Feeding inlet, while three aramid belts or steel wire that fix are transported on screw co-extruder mold distributor and are lockked,
Extrusion temperature is 130-230 DEG C, extruded velocity 5-15Hz, extrusion pressure 25-45Mpa；Modified ultra-high molecular weight polyethylene with
Aramid belt or the synchronous mold of steel wire, coextrusion are integrally formed and obtain guardrail board；
(2) column the production method is as follows:
A. by silane coupling agent 1-5 parts as stated in claim 2 with distilled water and ethyl alcohol dilution after solution with it is fire-retardant
8 parts -12 parts of agent, 1-1.5 parts of age resister, 1-1.2 parts of UV resistant agent, 0.8-1.4 parts of antioxidant, 10 parts of glass fibre, color
Female 0.3 part, 1-3 parts of silane coupling agent be sufficiently mixed, dry after with 100 parts of addition twin-screw extrusions of ultra-high molecular weight polyethylene
Extruding pelletization in machine, extrusion temperature are 130-230 DEG C, extruded velocity 5-15Hz, extrusion pressure 25-45Mpa；
B. the particulate material obtained in step a is transported to screw co-extruder group feeding inlet, while by steel screen layer
It is placed on screw co-extruder mold, extrusion temperature is 130-230 DEG C, extruded velocity 5-15Hz, extrusion pressure 25-
45Mpa；Modified ultra-high molecular weight polyethylene mold synchronous with aramid belt or steel wire, coextrusion are integrally formed and obtain column；
(3) obstruction block the production method is as follows: by TPU-68D:100 parts of polyurethane, 8 parts -12 parts of fire retardant, age resister
1-1.5 parts, 1-1.2 parts of UV resistant agent, 0.8-1.4 parts of antioxidant, 0.3 part of color masterbatch, 10 parts of glass fibre, silane coupling agent 1-
It 3 parts, is molded and is made in addition injection molding machine after mixing in proportion, injection temperature is 190-230 DEG C, injection pressure 50-
70Mpa。
Compared with prior art, the invention has the benefit that
1 has a safety feature: flexible safety fence plate, column and obstruction block provided by the invention use the poly- second of modified ultra-high molecular mass
The flexible outer layer of alkene and the coextrusion one-pass molding of steel wire or aramid belt, flexible safety fence plate and column can absorb collision energy, subtract
It is small or even avoid secondary injury.
2. endurance quality is long, the acidproof alkali salt of modified ultra-high molecular weight polyethylene of the invention, anti-aging non-discolouring, durability
It being (30-50 years), good weatherability (uses) between subzero-70 DEG C to 110 DEG C above freezing, and service life is steel material,
3-5 times.
3. maintenance cost is low: from usually anti-corrosion maintenance processing, the expenditure of manpower financial capacity can be saved, in slight impact
Under can spring back resets (in the limit), after deformation, not need repair and replacement, light-weight, convenient in carrying: installation saves labor, effect
Rate is high, and freight is low.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of anti-corrosion flexible safety fence of the invention；
Fig. 2 is the structural schematic diagram of guardrail board of the invention；
Fig. 3 is the structural schematic diagram of obstruction block of the invention；
Fig. 4 is the structural schematic diagram of column of the invention；
Wherein: 1 guardrail board, 2 obstruction blocks, 3 columns, 11 guardrail board flexible outer layers, 12 guardrail boards support sandwich layer, 31 columns
Flexible outer layer, 32 column middle support layers.
Specific embodiment
The present invention will be further explained with reference to the examples below.
As shown in Figure 1, the present invention provides a kind of anti-corrosion flexible safety fence, including protective rail plate, column and obstruction block composition, it is described
Guardrail board be by flexible outer layer and support sandwich layer be combined；The column is compound with middle support layer by flexible outer layer
It forms, the flexible outer layer of the protective rail plate is ultra-high molecular weight polyethylene or modified ultra-high molecular weight polyethylene, the shield
The support sandwich layer of sideboard is aramid belt or steel wire；The flexible outer layer of the column is ultra-high molecular weight polyethylene or is modified super
High molecular weight polyethylene, the middle support layer of the column are expanded metal lath.The flexible outer layer of the protective rail plate and column
The modified ultra-high molecular weight polyethylene of flexible outer layer forms and mass parts are as follows: 100 parts of supra polymer molecular weight polyethylene, fire-retardant
8 parts -12 parts of agent, 1-1.5 parts of age resister, 1-1.2 parts of UV resistant agent, 0.8-1.4 parts of antioxidant, 10 parts of glass fibre, color
It is 0.3 part, 1-3 parts of silane coupling agent female.The flexible outer layer of the guardrail board is combined with support sandwich layer one-pass molding；Institute
The column stated is combined by flexible outer layer and middle support layer one-pass molding.
The obstruction block is made of modified polyurethane, and the composition and mass parts of the modified polyurethane are as follows: poly- ammonia
TPU-68D:100 parts of ester, 8 parts -12 parts of fire retardant, 1-1.5 parts of age resister, 1-1.2 parts of UV resistant agent, antioxidant 0.8-
1.4 parts, 0.3 part of color masterbatch, 10 parts of glass fibre, 1-3 parts of silane coupling agent.The UV resistant agent is selected from hindered amines, benzo
At least one of triazole.The mould inhibitor is selected from least one of zinc borate, Bravo, folpet.Described is anti-aging
Agent is selected from one or both of hydrogen donors such as Hinered phenols, secondary arylamine.
A kind of production method on anti-corrosion flexible safety fence column assembles three after making guardrail board, column and obstruction block respectively,
Making step is as follows:
(1) guardrail board the production method is as follows:
A. by silane coupling agent 1-3 parts as stated in claim 2 with distilled water and ethyl alcohol dilution after solution with it is fire-retardant
8 parts -12 parts of agent, 1-1.5 parts of age resister, 1-1.2 parts of UV resistant agent, 0.8-1.4 parts of antioxidant, 10 parts of glass fibre, color
Female 0.3 part, 1-3 part of silane coupling agent be sufficiently mixed dry after with 100 parts of addition double screw extruders of ultra-high molecular weight polyethylene
Middle extruding pelletization, extrusion temperature are 130-230 DEG C, extruded velocity 5-15Hz, extrusion pressure 25-45Mpa；
B. aramid belt is fixed with wrapping machine, the particle obtained in step a is transported to screw co-extruder group and is entered
Material mouth, while three aramid belts or steel wire that fix are transported on screw co-extruder mold distributor and are lockked, it squeezes
Temperature is 130-230 DEG C, extruded velocity 5-15Hz, extrusion pressure 25-45Mpa out；Modified ultra-high molecular weight polyethylene and virtue
Synthetic fibre band or the synchronous mold of steel wire, coextrusion are integrally formed and obtain guardrail board.
(2) column the production method is as follows:
A. by silane coupling agent 1-3 parts as stated in claim 2 with distilled water and ethyl alcohol dilution after solution with it is fire-retardant
8 parts -12 parts of agent, 1-1.5 parts of age resister, 1-1.2 parts of UV resistant agent, 0.8-1.4 parts of antioxidant, 10 parts of glass fibre, color
It is 0.3 part female, it 1-3 parts of silane coupling agent, is sufficiently mixed after drying and 100 parts of addition twin-screw extrusions of ultra-high molecular weight polyethylene
Extruding pelletization in machine, extrusion temperature are 130-230 DEG C, extruded velocity 5-15Hz, extrusion pressure 25-45Mpa；
B. the particle obtained in step a is transported to screw co-extruder group feeding inlet, while steel screen layer is put
It sets in screw co-extruder mold, extrusion temperature is 130-230 DEG C, extruded velocity 5-15Hz, extrusion pressure 25-45Mpa；
Modified ultra-high molecular weight polyethylene mold synchronous with aramid belt or steel wire, coextrusion are integrally formed and obtain column.
(3) obstruction block the production method is as follows: by TPU-68D:100 parts of polyurethane, 8 parts -12 parts of fire retardant, age resister
1-1.5 parts, 1-1.2 parts of UV resistant agent, 0.8-1.4 parts of antioxidant, 10 parts of 0.3 part of color masterbatch, glass fibre silane coupling agent 1-3
Part, it is molded and is made in addition injection molding machine after mixing in proportion, injection temperature is 190-230 DEG C, injection pressure 50-
70Mpa。
The processing method of guardrail of the invention: firstly, be modified processing to raw material, i.e. mainly added material, such as glass
Glass fiber, aramid belt are crosslinking grafting with silane KH-570 0 and all raw materials are then carried out high puddling mix, by what is be stirred
Mixture causes particulate material by double-screw extruding pelletizing machine extrusion, aramid belt is fixed finally by wrapping machine, and particulate material is defeated
It is sent to and squeezes out unit feeding inlet, while three aramid belts fixed are transported to squeeze out and are lockked on unit mold distributor, this
It carves and squeezes out unit heating, be switched on by the parameter setting that process flow determines, raw material and aramid belt are total to by mold by extrusion unit
Extrusion forming produces guardrail board,
Embodiment 1-5: the production of guardrail board
As shown in Figure 1, guardrail board length 4320mm, guardrail board width 310mm, wave height 85mm, guardrail board wall thickness 6-9mm.
Table 1:
Making step is as follows:
A. it is added together with ultra-high molecular weight polyethylene after the auxiliary agent in above-mentioned table 1 being sufficiently mixed by above-mentioned mass parts double
Extruding pelletization in screw extruder, extrusion temperature are 130-230 DEG C, extruded velocity 5-15Hz, extrusion pressure 25-45Mpa；
B. aramid belt is fixed with wrapping machine, the particle obtained in step a is transported to screw co-extruder group and is entered
Material mouth, while three aramid belts or steel wire that fix are transported on screw co-extruder mold distributor and are lockked, it squeezes
Temperature is 130-230 DEG C, extruded velocity 5-15Hz, extrusion pressure 25-45Mpa out；Modified ultra-high molecular weight polyethylene and virtue
Synthetic fibre band or the synchronous mold of steel wire, coextrusion are integrally formed and obtain guardrail board；
The modified ultra-high molecular weight polyethylene of the flexible outer layer of guardrail board made from above embodiments is tested for the property,
As a result such as table 2:
Table 2
Embodiment 6-10: add the production of vertical muscle guardrail board together on W-shaped waist:
As shown in Fig. 2, anti-corrosion flexible safety fence slab geomitry shape design guardrail board length 4320mm, guardrail board width 310mm,
Wave height 85mm, guardrail board wall thickness 6-9mm.
Table 3
| UPE | Fire retardant | Age resister | UV resistant agent | Antioxidant | Color masterbatch | Glass fibre | Silane coupling agent | |
| Embodiment 6 | 100 | 8 | 1 | 1.1 | 0.8 | 0.3 | 10 | 2 |
| Embodiment 7 | 100 | 11 | 1.5 | 1 | 1.1 | 0.3 | 10 | 3 |
| Embodiment 8 | 100 | 12 | 1.1 | 1.2 | 1.2 | 0.3 | 10 | 1 |
| Embodiment 9 | 100 | 9 | 1.3 | 1 | 1.3 | 0.3 | 10 | 3 |
| Embodiment 10 | 100 | 10 | 1.2 | 1.1 | 1.4 | 0.3 | 10 | 1 |
Making step is as follows:
A. it is added together with ultra-high molecular weight polyethylene after the auxiliary agent in above-mentioned table 3 being sufficiently mixed by above-mentioned mass parts double
Extruding pelletization in screw extruder, extrusion temperature are 130-230 DEG C, extruded velocity 5-15Hz, extrusion pressure 25-45Mpa；
B. aramid belt is fixed with wrapping machine, the particle obtained in step a is transported to screw co-extruder group and is entered
Material mouth, while three aramid belts or steel wire that fix are transported on screw co-extruder mold distributor and are lockked, it squeezes
Temperature is 130-230 DEG C, extruded velocity 5-15Hz, extrusion pressure 25-45Mpa out；Modified ultra-high molecular weight polyethylene and virtue
Synthetic fibre band or the synchronous mold of steel wire, coextrusion are integrally formed and obtain guardrail board；
The modified ultra-high molecular weight polyethylene of the flexible outer layer of guardrail board made from above embodiments is tested for the property,
As a result such as table 4:
Table 4
Embodiment 11-15: the production of obstruction block
As shown in figure 3, guardrail board (W type) obstruction block geometry is in frame-type, design length 170mm, both ends of the surface are in
Pincer, width be rectangle 120mm*140mm, wooden partition thickness 12mm.
The raw material of embodiment 11-13 and its mass parts of addition are as follows:
Table 5
Making step is as follows: injection molding in injection molding machine is added in the mass parts in above-mentioned materials statement 5 after mixing and is made,
Injection temperature is that injection pressure is.
Obstruction block made from above embodiments is tested for the property, as a result as follows:
A. tensile strength: 280-300Mpa
B. elongation at break 80%
C. impact strength: 180Kj/m2
D. hardness: shore 72D
E. weight: 0.99Kg/.
F. weatherability: corrosion-resistant 50 years, it is 30 years anti-aging, do not fade 15 years.
Embodiment 16: the preparation method of column: raw material are identical as guardrail board, and test result is identical.
Column the production method is as follows:
A. the making step of the modification UPE of the flexible outer layer of column is identical as the flexible outer layer of guardrail board；
B. the particle obtained in step a is transported to screw co-extruder group feeding inlet, while steel screen layer is put
It sets in screw co-extruder mold, extrusion temperature is 130-230 DEG C, extruded velocity 5-15Hz, extrusion pressure 25-45Mpa；
Modified ultra-high molecular weight polyethylene mold synchronous with aramid belt or steel wire, coextrusion, which is integrally formed, obtains as shown in Figure 4 stand
Column.
By test, the weatherability temperature of the flexible outer layer material and obstruction block of guardrail board provided by the invention and column is
Subzero -70 DEG C to above freezing between 110 DEG C, flame retardant rating is B grades.
Embodiments of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but can not
Therefore limitations on the scope of the patent of the present invention are interpreted as, as long as skill obtained in the form of equivalent substitutions or equivalent transformations
Art scheme should all be fallen within the scope and spirit of the invention.
Claims (1)
1. a kind of anti-corrosion flexible safety fence, including protective rail plate, column and obstruction block, it is characterised in that: the guardrail board is by soft
Property outer layer with support sandwich layer be combined；The column is combined by flexible outer layer and middle support layer, the shield
The flexible outer layer of sideboard is ultra-high molecular weight polyethylene or modified ultra-high molecular weight polyethylene, the support sandwich layer of the protective rail plate
For aramid belt or steel wire, the flexible outer layer of the column is ultra-high molecular weight polyethylene or the poly- second of modified ultra-high molecular mass
Alkene, the middle support layer of the column are expanded metal lath；The flexible outer layer of the flexible outer layer and column of the protective rail plate changes
Property ultra-high molecular weight polyethylene composition and mass parts it is as follows: 100 parts of supra polymer molecular weight polyethylene, 8 parts -12 parts of fire retardant,
1-1.5 parts of age resister, 1-1.2 parts of UV resistant agent, 0.8-1.4 parts of antioxidant, 10 parts of glass fibre, 0.3 part of color masterbatch, silane
1-3 parts of coupling agent；The obstruction block is made of modified polyurethane, and the composition and mass parts of the modified polyurethane are as follows:
TPU-68D:100 parts, 8 parts -12 parts of fire retardant, 1-1.5 parts of age resister, 1-1.2 parts of UV resistant agent, antioxidant 0.8-1.4
Part, 0.3 part of color masterbatch, 10 parts of glass fibre, 1-3 parts of silane coupling agent；
The step of its production method, is as follows: three assembled after making guardrail board, column and obstruction block respectively,
(1) guardrail board the production method is as follows:
A. solution and 8 parts -12 parts of fire retardant, age resister 1- after 1-5 parts of silane coupling agent being diluted with distilled water and ethyl alcohol
1.5 parts, 1-1.2 parts of UV resistant agent, 0.8-1.4 parts of antioxidant, 10 parts of glass fibre, 0.3 part of color masterbatch, silane coupling agent 1-3
Part is sufficiently mixed and dries, and adds twin-screw extrude extruding pelletization with 100 parts of ultra-high molecular weight polyethylene, extrusion temperature is
130-230 DEG C, extruded velocity 5-15Hz, extrusion pressure 5-25Mpa；
B. aramid belt is fixed with wrapping machine, the particle obtained in step a is transported to screw co-extruder group feeding inlet,
Three aramid belts or steel wire that fix are transported on screw co-extruder mold distributor simultaneously and are lockked, extrusion temperature
It is 130-230 DEG C, extruded velocity 5-15Hz, extrusion pressure 5-25Mpa；Modified ultra-high molecular weight polyethylene and aramid belt or steel
Silk screen synchronizes mold, and coextrusion is integrally formed and obtains guardrail board；
(2) column the production method is as follows:
A. by 1-5 parts of silane coupling agent with 8 parts -12 parts of solution and the fire retardant agent, anti-ageing after distilled water and ethyl alcohol dilution
1-1.5 parts of agent, 1-1.2 parts of UV resistant agent, 0.8-1.4 parts of antioxidant, 10 parts of glass fibre, 0.3 part of color masterbatch, it is silane coupled
1-3 parts of agent are sufficiently mixed and dry, then add twin-screw extrude extruding pelletization with 100 parts of ultra-high molecular weight polyethylene, squeeze
Temperature is 130-230 DEG C, extruded velocity 5-15Hz, extrusion pressure 5-25Mpa out；
B. the particle obtained in step a is transported to screw co-extruder group feeding inlet, while steel screen layer is placed on
Screw co-extruder mold, extrusion temperature are 130-230 DEG C, extruded velocity 5-15Hz, extrusion pressure 5-25Mpa；It is modified
Ultra-high molecular weight polyethylene mold synchronous with aramid belt or steel wire, coextrusion are integrally formed and obtain column；
(3) obstruction block the production method is as follows: by TPU-68D:100 parts, it is 8 parts -12 parts of fire retardant, 1-1.5 parts of age resister, anti-
1-1.2 parts of ultraviolet light agent, 0.8-1.4 parts of antioxidant, 0.3 part of color masterbatch, 10 parts of glass fibre, 1-3 parts of silane coupling agent, in proportion
It is added in injection molding machine to be molded after mixing and be made, injection temperature is 190-230 DEG C, injection pressure 50-70Mpa.
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| CN106759393B (en) * | 2016-12-15 | 2019-02-26 | 四川航天拓鑫玄武岩实业有限公司 | A kind of passive flexible protective column |
| CN108004979B (en) * | 2017-11-08 | 2019-09-06 | 王筱文 | A kind of flexible protective plate |
| NL1043934B1 (en) * | 2021-02-15 | 2022-10-07 | Kiem Innovations B V | Rail profile, and guardrail comprising two of such rail profiles |
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| CN101613998B (en) * | 2009-07-14 | 2011-01-26 | 周志亮 | Crash barrier made from high tensile flexible resin matrix composite material |
| CA2884738A1 (en) * | 2012-09-13 | 2014-03-20 | Energy Absorption Systems, Inc. | Guardrail |
| CN103866712A (en) * | 2014-04-08 | 2014-06-18 | 陕西龙盛亚实业有限公司 | Expressway guardrail plate |
| CN203755206U (en) * | 2014-04-08 | 2014-08-06 | 陕西龙盛亚实业有限公司 | Highway guardrail board and anti-collision guardrail |
| CN105625221A (en) * | 2014-10-29 | 2016-06-01 | 广州金发碳纤维新材料发展有限公司 | Continuous filament reinforced polyolefin composite guard bar |
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