CN106436876A - Resin-based polymer composite water grate and preparation method thereof - Google Patents
Resin-based polymer composite water grate and preparation method thereof Download PDFInfo
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- CN106436876A CN106436876A CN201611130009.XA CN201611130009A CN106436876A CN 106436876 A CN106436876 A CN 106436876A CN 201611130009 A CN201611130009 A CN 201611130009A CN 106436876 A CN106436876 A CN 106436876A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/06—Gully gratings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/10—Silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/06—Unsaturated polyesters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention relates to a resin-based polymer composite water grate. The resin-based polymer composite water grate comprises a water grate body with water holes, wherein the water grate body comprises a resin-based polymer layer positioned in upper layer and a reticular composite fiber layer positioned in lower layer; the resin-based polymer layer mainly comprises the following components in parts by weight: 100 parts of hybrid resin employing unsaturated polyester resin as a substrate, 0.4 to 8 parts of a curing agent, 10 to 20 parts of activated calcium powder, 5 to 40 parts of modified engineering plastics, 10 to 60 parts of silica sand, 1 to 10 parts of a release agent, 0.1 to 1 part of an antioxidant, 1 to 5 parts of a pigment and 15 to 30 parts of short fibers; the reticular composite fiber layer comprises the following components in parts by weight: 100 parts of the hybrid resin employing the unsaturated polyester resin as the substrate, 0.4 to 8 parts of a curing agent, 1 to 10 parts of a release agent, 0.1 to 1 part of an antioxidant, 1 to 5 parts of a pigment, 10 to 30 parts of continuous fiberglass, 5 to 10 parts of silicon carbide fibers and 1 to 5 parts of carbon fibers. The invention also discloses a preparation method for the resin-based polymer composite water grate. The water grate has the advantages of low manufacturing cost, composite material irreversibility, no secondary recycling, long service life, high bearing capacity and the like.
Description
Technical field
The invention belongs to water grate technical field, more particularly to a kind of resin base polymer composite shutter grate and its preparation side
Method.
Background technology
At present, urban construction draining, fire-fighting, post and telecommunications, airport life-time service casting iron well lid.In recent years because well lid is lost in a large number
Mistake causes countless traffic and personal injury.The main cause that well lid is lost is that casting iron well lid can recycle, and causes and does not send out
Molecule is united and is committed a crime, and this phenomenon causes grave danger of finance and life to government and the people masses, although people develop band
Have the well lid of lockset or plastics well lid, all because its structure or bearing capacity are limited and be unable to spread, social city
Build urgently develop a kind of low cost of manufacture, composite irreversible, cannot secondary recovery utilizations, long service life, carrying energy
The big resin base polymer composite shutter grate of power.
Content of the invention
The present invention provides a kind of low cost of manufacture, composite can not for solving technical problem present in known technology
Inverse, cannot secondary recovery utilization, long service life, resin base polymer composite shutter grate of large carrying capacity and preparation method thereof.
The present invention is adopted the technical scheme that by solving technical problem present in known technology：
A kind of resin base polymer composite shutter grate it is characterised in that：Including water grate body, described water grate body includes being located at
The resin base polymer layer on upper strata and the netted multiple fibre layer being located at lower floor；The lower surface both sides of described water grate body are provided with seat
Dress edge；From seat dress along being provided with slope to the lower surface of water grate body, described water grate body is provided with least provided with string water hole,
It is provided with dividing wall between adjacent water hole.
The present invention can also adopt following technical measures：
Described separation is embedded with framework of steel reinforcement within the walls, and described framework of steel reinforcement is located at the 1/3 of water grate whole height；Described steel
Muscles and bones frame is welded using screw-thread steel.
Described water hole includes the osculum of superposed gully-hole and bottom, and the external diameter of described gully-hole is more than draining
The external diameter in hole.
Described osculum is taper hole.
Outermost water hole is located at the slope below water grate body.
Described water grate body be formed around seam.
Invention additionally discloses a kind of composite based on said structure resin base polymer composite shutter grate, including positioned at upper
The resin base polymer layer of layer and the netted multiple fibre layer being located at lower floor；Resin base polymer layer key component by weight,
Unsaturated polyester resin is 100 parts of the hybrid resin of matrix, 0.4～8 part of firming agent；10～20 parts of activated calcium powder；Modified engineering
5～40 parts of plastics；10～60 parts of silica sand；1～10 part of releasing agent；0.1～1 part of antioxidant；1～5 part of pigment；Chopped fiber 15～
30 parts；
Netted multiple fibre layer, according to unsaturated polyester resin for matrix 100 parts of hybrid resin, 0.4～8 part of firming agent；
1～10 part of releasing agent；0.1～1 part of antioxidant；1～5 part of pigment；10～30 parts of continuous glass fibre；Silicon carbide fibre 5～
10 parts；1～5 part of carbon fiber.
Invention additionally discloses a kind of preparation method based on above-mentioned resin base polymer composite shutter grate, mainly include as follows
Step：
1), framework of steel reinforcement is prefabricated：
(1.1), screw-thread steel is selected to make framework of steel reinforcement, a diameter of 16～20mm of screw-thread steel；
(1.2), the length and width according to water grate cuts；
(1.3), welded reinforcement skeleton according to the quantity of water grate dividing wall arrange longitudinal reinforcement, the centre in longitudinal reinforcement or
Transverse steel is welded on both sides；
2), configuration resin base polymer layer is combined batch mixing：
2.1st, unsaturated polyester resin is pulled an oar；
2.2nd, firming agent, activated calcium powder, modified engineered plastic, the silicon of 20～300 mesh granularities are added in above-mentioned serosity
Sand, releasing agent, antioxidant and pigment, are added one by one in adding procedure, and at the uniform velocity stir；
3), netted multiple fibre layer is combined batch mixing：
3.1st, unsaturated polyester resin is pulled an oar；
3.2nd, firming agent, releasing agent, antioxidant, pigment, continuous glass fibre are added in above-mentioned serosity；Carborundum
Fiber；Carbon fiber, is added one by one in adding procedure, and at the uniform velocity stirs；
4), compression molding
4.1st, it is first filled with netted multiple fibre layer in mould and is combined batch mixing, then add configuration resin base polymer layer multiple
Close batch mixing；And at 90～140 DEG C, carry out compression molding；
5), after, being incubated 48 hours, carry out demoulding process；
6), check；_
7), finished product warehouse-in.
The present invention has the advantages and positive effects that：Due to the water grate being manufactured based on above-mentioned composite, it is through too high
The irreversible chemical reaction carrying out under temperature, condition of high voltage, changes the molecular structure of original resin, produces cross-linked structure,
Compression molding is carried out using the different structure of two-layer composite simultaneously, the intensity of resin, rigidity, toughness can be significantly improved；
Its index exceedes Minstry of Housing and Urban-Rural Development of People Republic of China's CT/T121-2000 standard, has that intensity height, acid and alkali-resistance, resisting fatigue be slightly good, damping performance
High, bearing capacity is strong, long service life, to human body fanout free region, no secondary recovery reproduce the advantages of value, environmental protection.
Brief description
Fig. 1 is the structural representation of resin base polymer composite shutter grate of the present invention；
Fig. 2 is resin base polymer composite shutter grate sectional view.
In figure：1st, water grate body；1-1, resin base polymer layer；1-2, netted multiple fibre layer；1-3, seat dress edge；1-4、
Slope；1-5, water hole；1-6, dividing wall；1-7, seam；2nd, reinforcing bar.
Specific embodiment
For content of the invention, feature and effect of the present invention can be further appreciated that, hereby enumerate following examples, and coordinate accompanying drawing
Describe in detail as follows：
Refer to Fig. 1 and Fig. 2, a kind of resin base polymer composite shutter grate, including water grate body 1, described water grate body bag
Include the resin base polymer layer 1-1 positioned at the upper strata and netted multiple fibre layer 1-2 being located at lower floor；Resin base polymer layer 1-1
Need to be set according to actual bearer with the thickness of the netted multiple fibre layer 1-2 positioned at lower floor；Under described water grate body
Surface both sides are provided with seat and fill along 1-3；From seat dress along being provided with slope 1-4 to the lower surface of water grate body, described water grate body sets
Have at least provided with string water hole 1-5, it acts on for draining；It is provided with dividing wall 1-6 between adjacent water hole.
The present invention can also adopt following technical measures：
In order to improve bearing capacity and the shearing force of water grate, it is embedded with framework of steel reinforcement within the walls in described separation, described reinforcing bar
Frame is located at the 1/3 of water grate whole height；Described reinforcing bar 2 adopts screw-thread steel.
In order to improve the displacement of water hole, described water hole includes the osculum of superposed gully-hole and bottom,
The external diameter of described gully-hole is more than the external diameter of osculum；Described osculum is taper hole.
In order to prevent edge's pole water, outermost water hole is located at the slope below water grate body.
In order to reduce collide with edge in transportation after large area fracture, being formed around of described water grate body stop
Mouth 1-7, this seam plays the scattered effect of stress,.
Invention additionally discloses a kind of composite based on said structure resin base polymer composite shutter grate, including positioned at upper
The resin base polymer layer of layer and the netted multiple fibre layer being located at lower floor；Resin base polymer layer key component by weight,
Unsaturated polyester resin is 100 parts of the hybrid resin of matrix, 0.4～8 part of firming agent；10～20 parts of activated calcium powder；Modified engineering
5～40 parts of plastics；10～60 parts of silica sand；1～10 part of releasing agent；0.1～1 part of antioxidant；1～5 part of pigment；Chopped fiber 15～
30 parts；
Netted multiple fibre layer, according to unsaturated polyester resin for matrix 100 parts of hybrid resin, 0.4～8 part of firming agent；
1～10 part of releasing agent；0.1～1 part of antioxidant；1～5 part of pigment；10～30 parts of continuous glass fibre；Silicon carbide fibre 5～
10 parts；1～5 part of carbon fiber.
Above-mentioned dispersant, preferably EBS dispersant；Coupling agent, preferably coupling agent FH-550；Firming agent, preferably
Benzoyl peroxide tert-butyl acrylate；Antioxidant, preferably antioxidant 1010.
Embodiment 1,
The water grate of common bearing capacity, including the resin base polymer layer positioned at upper strata and the netted multiple fibre positioned at lower floor
Layer；By weight, unsaturated polyester resin is 100 parts of the hybrid resin of matrix to resin base polymer layer key component, firming agent
0.4 part；10 parts of activated calcium powder；5 parts of modified engineered plastic；10 parts of silica sand；1 part of releasing agent；0.1 part of antioxidant；1 part of pigment；
15 parts of chopped fiber；
Netted multiple fibre layer, according to unsaturated polyester resin for matrix 100 parts of hybrid resin, 0.4 part of firming agent；The demoulding
1 part of agent；0.1 part of antioxidant；1 part of pigment；10 parts of continuous glass fibre；5 parts of silicon carbide fibre；1 part of carbon fiber.
The water grate of general bearing capacity, including the resin base polymer layer positioned at upper strata and the netted multiple fibre positioned at lower floor
Layer；By weight, unsaturated polyester resin is 100 parts of the hybrid resin of matrix to resin base polymer layer key component, firming agent 5
Part；15 parts of activated calcium powder；35 parts of modified engineered plastic；40 parts of silica sand；8 parts of releasing agent；0.5 part of antioxidant；3 parts of pigment；Short
20 parts of fiber；
Netted multiple fibre layer, according to unsaturated polyester resin for matrix 100 parts of hybrid resin, 5 parts of firming agent；Releasing agent
8 parts；0.5 part of antioxidant；3 parts of pigment；15 parts of continuous glass fibre；8 parts of silicon carbide fibre；3 parts of carbon fiber.
Embodiment 2, the water grate of more than bearing capacity 360KN：Including the resin base polymer layer positioned at upper strata with positioned at lower floor
Netted multiple fibre layer；By weight, unsaturated polyester resin mixes tree for matrix to resin base polymer layer key component
100 parts of fat, 8 parts of firming agent；20 parts of activated calcium powder；40 parts of modified engineered plastic；60 parts of silica sand；10 parts of releasing agent；Antioxidant 1
Part；5 parts of pigment；30 parts of chopped fiber；
Netted multiple fibre layer, according to unsaturated polyester resin for matrix 100 parts of hybrid resin, 8 parts of firming agent；Releasing agent
10 parts；1 part of antioxidant；5 parts of pigment；30 parts of continuous glass fibre；10 parts of silicon carbide fibre；5 parts of carbon fiber.
The present invention is the irreversible chemical reaction carrying out under high temperature, condition of high voltage, changes the molecule of original resin
Structure, produces cross-linked structure, carries out compression molding using the different structure of two-layer composite simultaneously, can significantly improve
The intensity of resin, rigidity, toughness；
Invention additionally discloses a kind of preparation method based on above-mentioned resin base polymer composite shutter grate, mainly include as follows
Step：
1), framework of steel reinforcement is prefabricated：
(1.1), screw-thread steel is selected to make framework of steel reinforcement, a diameter of 16～20mm of screw-thread steel；
(1.2), the length and width according to water grate cuts；
(1.3), welded reinforcement skeleton according to the quantity of water grate dividing wall arrange longitudinal reinforcement, the centre in longitudinal reinforcement or
Transverse steel is welded on both sides；
2), configuration resin base polymer layer is combined batch mixing：
2.1st, unsaturated polyester resin is pulled an oar；
2.2nd, firming agent, activated calcium powder, modified engineered plastic, the silicon of 20～300 mesh granularities are added in above-mentioned serosity
Sand, releasing agent, antioxidant and pigment, are added one by one in adding procedure, and at the uniform velocity stir；
3), netted multiple fibre layer is combined batch mixing：
3.1st, unsaturated polyester resin is pulled an oar；
3.2nd, firming agent, releasing agent, antioxidant, pigment, continuous glass fibre are added in above-mentioned serosity；Carborundum
Fiber；Carbon fiber, is added one by one in adding procedure, and at the uniform velocity stirs；
4), compression molding
4.1st, it is first filled with netted multiple fibre layer in mould and is combined batch mixing, then add configuration resin base polymer layer multiple
Close batch mixing；And at 90～140 DEG C, carry out compression molding；
5), after, being incubated 48 hours, carry out demoulding process；
6), check；Main test those project burr, hollow, pressure testing, outward appearances；
7), finished product warehouse-in.
The above is only to presently preferred embodiments of the present invention, not the present invention is made with any pro forma restriction,
Every technical spirit according to the present invention, to any simple modification made for any of the above embodiments, equivalent variations and modification, belongs to
In the range of technical solution of the present invention.
Claims (8)
1. a kind of resin base polymer composite shutter grate it is characterised in that：Including water grate body, described water grate body is included positioned at upper
The resin base polymer layer of layer and the netted multiple fibre layer being located at lower floor；The lower surface both sides of described water grate body are provided with seat dress
Edge；From seat dress along being provided with slope to the lower surface of water grate body, described water grate body is provided with least provided with string water hole, phase
It is provided with dividing wall between adjacent water hole.
2. resin base polymer composite shutter grate according to claim 1 it is characterised in that：Described separation is embedded with steel within the walls
Muscles and bones frame, described framework of steel reinforcement is located at the 1/3 of water grate whole height；Described framework of steel reinforcement is welded using screw-thread steel.
3. resin base polymer composite shutter grate according to claim 1 it is characterised in that：Described water hole is included positioned at upper
The gully-hole in portion and the osculum of bottom, the external diameter of described gully-hole is more than the external diameter of osculum.
4. resin base polymer composite shutter grate according to claim 1 it is characterised in that：Described osculum is taper hole.
5. resin base polymer composite shutter grate according to claim 1 it is characterised in that：Outermost water hole is located at water
At slope below grate body.
6. resin base polymer composite shutter grate according to claim 1 it is characterised in that：The surrounding of described water grate body sets
There is seam.
7. a kind of composite based on said structure resin base polymer composite shutter grate it is characterised in that：Resin base polymer
By weight, unsaturated polyester resin is 100 parts of the hybrid resin of matrix to layer key component, 0.4～8 part of firming agent；Activated calcium
10～20 parts of powder；5～40 parts of modified engineered plastic；10～60 parts of silica sand；1～10 part of releasing agent；0.1～1 part of antioxidant；Face
1～5 part of material；15～30 parts of chopped fiber；
Netted multiple fibre layer, according to unsaturated polyester resin for matrix 100 parts of hybrid resin, 0.4～8 part of firming agent；The demoulding
1～10 part of agent；0.1～1 part of antioxidant；1～5 part of pigment；10～30 parts of continuous glass fibre；5～10 parts of silicon carbide fibre；
1～5 part of carbon fiber.
8. a kind of preparation method based on above-mentioned resin base polymer composite shutter grate it is characterised in that：Main inclusion is following to be walked
Suddenly：
1), framework of steel reinforcement is prefabricated：
(1.1), screw-thread steel is selected to make framework of steel reinforcement, a diameter of 16～20mm of screw-thread steel；
(1.2), the length and width according to water grate cuts；
(1.3), welded reinforcement skeleton arranges longitudinal reinforcement, the centre in longitudinal reinforcement or both sides according to the quantity of water grate dividing wall
Welding transverse steel；
2), configuration resin base polymer layer is combined batch mixing：
2.1st, unsaturated polyester resin is pulled an oar；
2.2nd, add firming agent, activated calcium powder, modified engineered plastic, the silica sand of 20～300 mesh granularities in above-mentioned serosity, take off
Mould agent, antioxidant and pigment, are added one by one in adding procedure, and at the uniform velocity stir；
3), netted multiple fibre layer is combined batch mixing：
3.1st, unsaturated polyester resin is pulled an oar；
3.2nd, firming agent, releasing agent, antioxidant, pigment, continuous glass fibre are added in above-mentioned serosity；Carborundum is fine
Dimension；Carbon fiber, is added one by one in adding procedure, and at the uniform velocity stirs；
4), compression molding
4.1st, it is first filled with netted multiple fibre layer in mould and is combined batch mixing, then add configuration resin base polymer layer compound mixed
Material；And at 90～140 DEG C, carry out compression molding；
5), after, being incubated 48 hours, carry out demoulding process；
6), check；
7), finished product warehouse-in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611130009.XA CN106436876A (en) | 2016-12-09 | 2016-12-09 | Resin-based polymer composite water grate and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611130009.XA CN106436876A (en) | 2016-12-09 | 2016-12-09 | Resin-based polymer composite water grate and preparation method thereof |
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| CN106436876A true CN106436876A (en) | 2017-02-22 |
Family
ID=58217139
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2797385C1 (en) * | 2022-08-12 | 2023-06-05 | Общество с ограниченной ответственностью "Символ" | Polymeric-sand reinforced rainwater well storm water inlet |
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| CN201202123Y (en) * | 2008-01-09 | 2009-03-04 | 邵世乐 | Resin-based high polymer composite well lid |
| CN201567587U (en) * | 2009-05-20 | 2010-09-01 | 李学闵 | Hybrid fiber reinforced nano-composite well cover with hollow structure |
| 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 |
| CN102660964A (en) * | 2012-05-21 | 2012-09-12 | 大庆市海钰金属制品有限公司 | Unsaturated resin well utensil and manufacturing method thereof |
| KR101536955B1 (en) * | 2014-04-01 | 2015-07-15 | 글로벌피앤에프주식회사 | Grating method with clean tech wood composites |
| CN206581380U (en) * | 2016-12-09 | 2017-10-24 | 天津市博安塑胶制品有限公司 | Resin base polymer composite shutter grate |
-
2016
- 2016-12-09 CN CN201611130009.XA patent/CN106436876A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1990968A (en) * | 2005-12-28 | 2007-07-04 | 曾建祥 | High load composite material shutter grate |
| CN1990961A (en) * | 2005-12-28 | 2007-07-04 | 曾建祥 | Composite material moulded well covers |
| CN1850904A (en) * | 2006-05-19 | 2006-10-25 | 天津市博安塑胶制品有限公司 | Resin base polymer composite manhole cover |
| CN201202123Y (en) * | 2008-01-09 | 2009-03-04 | 邵世乐 | Resin-based high polymer composite well lid |
| CN201567587U (en) * | 2009-05-20 | 2010-09-01 | 李学闵 | Hybrid fiber reinforced nano-composite well cover with hollow structure |
| 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 |
| CN102660964A (en) * | 2012-05-21 | 2012-09-12 | 大庆市海钰金属制品有限公司 | Unsaturated resin well utensil and manufacturing method thereof |
| KR101536955B1 (en) * | 2014-04-01 | 2015-07-15 | 글로벌피앤에프주식회사 | Grating method with clean tech wood composites |
| CN206581380U (en) * | 2016-12-09 | 2017-10-24 | 天津市博安塑胶制品有限公司 | Resin base polymer composite shutter grate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2797385C1 (en) * | 2022-08-12 | 2023-06-05 | Общество с ограниченной ответственностью "Символ" | Polymeric-sand reinforced rainwater well storm water inlet |
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Application publication date: 20170222 |