CN103467951A - Water grate and production method thereof - Google Patents
Water grate and production method thereof Download PDFInfo
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- CN103467951A CN103467951A CN2013102385644A CN201310238564A CN103467951A CN 103467951 A CN103467951 A CN 103467951A CN 2013102385644 A CN2013102385644 A CN 2013102385644A CN 201310238564 A CN201310238564 A CN 201310238564A CN 103467951 A CN103467951 A CN 103467951A
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Abstract
The invention discloses a water grate and a production method thereof. The water grate is made from SMC special-purpose yarn, unsaturated polyester resin, epoxy vinyl ester resin, a low shrink additive, a filling material and a plurality of auxiliary agents. Mechanical properties of the water grate, such as tensile strength, modulus strength, density and thermal deformation temperature, are close to that of some metal; the water grate will not break or crumble, and is capable of maintaining integrity after rolling by a vehicle with an actual load capacity of 250KN. The water grate possesses excellent rigidity, elasticity, corrosion resistance, weather ability and aging resistance, and is light in weight.
Description
Technical field
The present invention relates to a kind of urban planning and construction equipment, in particular to the production method of a kind of drain cover and this drain cover.
Background technology
SMC is the abbreviation of Shui Bi water grate, that is: unsaturated polyester is the sheet molding compound that base material strengthens with glass fibre.SMC flake reinforcement plastics main raw material comprises the special-purpose Yarn of SMC, unsaturated polyester resin, epoxy vingl ester resin, low shrinkage additive, filler and various auxiliary agent.The SMC material has superior electric property, corrosion resistance nature, the advantage such as light weight and engineering design are easy, flexible.Because its mechanical property can compare favourably with the part metals material, thereby be widely used in space flight and space shuttle (carbon fiber reinforced cabin), rail vehicle, automobile, railway and highway facilities, military installations, Sports facilities, building, electrical fittings, in the industry such as electric.
Unsaturated polyester is that the sheet molding compound (SMC) that base material strengthens with glass fibre came out in Europe in earlier 1960s, and about nineteen sixty-five, the U.S., Japan have developed SMC technique in succession.China is in SMC production line and the production technique of Introduced From Abroad at the end of the eighties.
SMC material and goods are at international, domestic belonging to of " novel material, novel process, new technology " category.Domesticly with world development speed, synchronize, on some degree, also higher than the prostatitis of the world standard ，Zou world, the SMC material horizontal is developed into to many fields.
Now in world market, the drain cover that matrix material is manufactured is due to its light profile, and remarkable carrying mechanical property is widely used it as the tensile strength of product, modulus intensity, density, heat-drawn wire etc.
In the middle of urban construction, be unable to do without draining, this just need to arrange water exhaust system in the middle of urban construction, same, just inevitably uses drain cover.Traditional drain cover generally forms with iron casting or with the silt cement sintering, though such drain cover can reach certain rigidity, because the material of metal species or silt cement class is subject to the erosion easily corrosion afterwards of rainwater and other waste water.Moreover, when temperature is lower or the lower area of some temperature, press and very possible later the phenomenons such as drain cover splits, breaks occur when cast iron or the drain cover that forms with the silt cement sintering are subject to heavier vehicle, cause the vehicle tyre card to fall in drain well or discharge channel, cause unnecessary property damage, the more serious life security accident that causes.
Summary of the invention
The object of the invention is to solve the central deficiency of prior art, a kind of production method of drain cover and this kind of drain cover and this water grate product of SMC matrix material is provided, be applied in the middle of urban construction.
To achieve these goals, a first aspect of the present invention is to provide a kind of drain cover, and its lid manufactured materials is the SMC advanced composite material.
Preferably, described SMC matrix material comprises synthetic resins, strongthener, subsidiary material.
In above-mentioned arbitrary scheme, preferably, described synthetic resins comprises unsaturated polyester resin, epoxy vingl ester resin.
In above-mentioned arbitrary scheme, preferably, described strongthener is the short glass fiber rove or comprises precursor and the composition material of carbon fiber wire.
In above-mentioned arbitrary scheme, preferably, described subsidiary material comprise filler, solidifying agent, thickening material, shrinking agent, releasing agent, tinting material, linking agent.
In above-mentioned arbitrary scheme, preferably, the lid of described drain cover arranges at least one water vent.
In above-mentioned arbitrary scheme, preferably, the lid centre of described drain cover arranges a glance.
A second aspect of the present invention relates to a kind of method for the production of the drain cover in above-mentioned arbitrary scheme, comprises the steps:
A, preparation SMC material;
Preparation before B, mold pressing drain cover;
C, carry out water grate mold process.
In such scheme, preferably, described steps A, step B, step C carry out successively according to above-mentioned putting in order.
Preferably, be included as the SMC sheet material design batching formula of producing described drain cover in described steps A in above-mentioned arbitrary scheme.
In above-mentioned arbitrary scheme, preferably, described steps A comprises synthetic SMC sheet material Resin adhesive and glass fibre.
In above-mentioned arbitrary scheme, preferably, described steps A comprises design exothermic peak temperature and Resin adhesive and glass fibre speed of response.
In above-mentioned arbitrary scheme, preferably, described steps A comprises after preparation SMC sheet material material requested is mixed puts into corresponding magazine.
In above-mentioned arbitrary scheme, preferably, described steps A comprises the material after mixing is coated on polyethylene film equably, forms resin paste.
In above-mentioned arbitrary scheme, preferably, described steps A comprises that unit guides described resin paste to enter the short glass fiber settling pocket.
Preferably, be included in the short glass fiber settling pocket in described steps A the short glass fiber of well cutting is coated on resin paste equably in above-mentioned arbitrary scheme.
In above-mentioned arbitrary scheme, preferably, described steps A comprises that the resin paste that will reach sinkability sends settling pocket and enter in the roller battle array of a series of sequences straggly along with transmission mechanism.
Preferably, be included in described steps A in a series of orderly roller battle arrays straggly in above-mentioned arbitrary scheme, repeatedly make in short glass fiber solvent impregnated resin paste under the effect of tension force and roller and drive bubble wherein away, form the accurate sheet material of SMC.
In above-mentioned arbitrary scheme, preferably, described steps A comprises to be put into the accurate sheet material of SMC between slaking and carries out the thickening slaking.
In above-mentioned arbitrary scheme, preferably, described steps A comprises determines curing soaking time.
In above-mentioned arbitrary scheme, preferably, described steps A comprises the slaking quality that checks the SMC sheet material, and the quantitative sheet material of cutting forms and manufactures the required SMC sheet material of drain cover provided by the invention.
In above-mentioned arbitrary scheme, preferably, described step B comprises mould correctly is arranged on hydraulic press workbench.
In above-mentioned arbitrary scheme, preferably, described step B comprises hydropress pressure is transferred to setting pressure, and the dwell time arrives setting-up time.
In above-mentioned arbitrary scheme, preferably, described step B comprises that mould heats up.
Preferably, in described step C, be included in the mould set and fed in raw material in above-mentioned arbitrary scheme.
Preferably, be included in the compacting of carrying out drain cover on hydraulic press workbench in described step C in above-mentioned arbitrary scheme.
In above-mentioned arbitrary scheme, preferably, described step C comprises die sinking, and product is taken out in the demoulding.
In above-mentioned arbitrary scheme, preferably, described step C comprises the physics typing after the drain cover depanning.
In above-mentioned arbitrary scheme, preferably, described step C comprises the logical eye deburring packing of drain cover.
The accompanying drawing explanation
Fig. 1 is the stereographic map according to a preferred embodiment of drain cover of the present invention;
Embodiment
In order to understand better according to drain cover of the present invention, below in conjunction with accompanying drawing, the preferred embodiment of the drain cover in the present invention is further elaborated to explanation.
Pictorial diagram as the preferred embodiment according to drain cover of the present invention of Fig. 1, the lid of the drain cover of the present embodiment is shaped as rectangle, be of a size of: long 5000mm * wide 120mm * high 20mm, lid is provided with 34 water vents altogether, and water vent is distributed as two symmetrical row on lid, except two water vents of every row middle part, 12 drain hole shapes of its excess-three, size are all identical.34 water vents that arrange on described lid are all the slotted hole that two ends form for rectangle for semicircle middle part, and the water vent of every row middle part is slightly less than the water vent that this is listed as other.A glance is set in the centre of the drain cover lid place of the present embodiment rectangle.
Design to the loading strength (rigidity) of SMC sheet material, must consider maximum value, but in the use procedure of SMC water castor, toughness (flexibility) also will be arranged, if it is inadequate to produce modulus amount of deflection toughness while when SMC water castor is used, being subject to the wheel rolloff, the water castor equally also can be broken.Consider the requirement of above water castor reality, solve SMC water castor rigidity and flexible comprehensive problem, the drain cover of SMC material provided by the invention adopts rigidity resin (unsaturated polyester resin) and flexible resin (Vinylite) to be used in conjunction with according to the resin property ratio, adopt flexible shrinking agent, line style high purity solidifying agent and other auxiliary agents, filler.Form very outstanding formula combination, synthetic ratio is: 65% SMC glue, 35% glass fibre.Wherein, SMC glue design proportioning resin, auxiliary agent, filler are made according to the ratio of 35:4:26.Because the enhancing of SMC comes from glass fibre, the present invention designs and uses 129 of the special-purpose high-strength 4800 gram alkali-free zero twisted yarns of SMC, with long yarn state continuously, synthesizes the SMC sheet material, and this formula combination is the unique distinction of SMC drain cover provided by the invention.
Manufacture the high requirement that drain cover provided by the invention has the preparation of SMC sheet material, will be according to the character design batching formula for preparing material, the density of SMC is generally 1.75-1.95g/cm3, molding shrinkage 0.05%, 240 degrees centigrade of heat-drawn wires, shock strength 121kj/ ㎡, flexural strength 180Mpa, 1.4 * 1015 ohm of insulation resistances.Electrical strength, dielectric dissipation factor, relative permittivity, anti-electric arc, anti-electric trace index, incendivity etc., drain cover provided by the invention reaches country and international standard, possesses and develops the qualified product that require according to quality product.
In view of above condition, strength, precision, die sinking, the pressing speed of product to mould, hydropress, SMC sheet material putting in mould, supporting capacity of the sealing effect of mould, Temperature Setting, mould etc. problem all will all be taken into account when the research and development design.Drain cover provided by the invention has very high requirement to the quality of hydropress and mould in process of production for this reason, existing hydropress equipment is tested, by it, be that the true pressure ability is (through the very high product of laboratory theoretical calculation bearing capacity, need the above pressure of every square centimeter of 30KG, just can complete product needed).Mold developing more will be considered the material density of mould, and exhaust process is set, supporting capacity, the design of heating system, heats and product structure mechanics when producing drain cover provided by the invention for the application of mould.
The technical process that the SMC water sieve is made, whole making processes is the most rambunctious is chemical reaction process; The reaction that two kinds of resins, shrinking agent and line styles are high purity cured dose, very bad control, resin admittedly containing different, viscosity is different, acid number is different, causes with the speed of response of solidifying agent different.The different curing disunity as a result of gelation time, can cause final product crisp or soft, do not reach the effect of the gentle unification of steel.SMC drain cover provided by the invention is in batching, the strict calculation and test of process during synthetic SMC sheet material, solved this difficult problem, its method is: with the solids content (Gu containing) of every kind of resin, viscosity, gelation time (speed of response) is basis, the usage quantity that calculates their participation reactions is how many, substantially obtain the overall curing reaction speed molecular band of resin, speed of response when thereby design water outlet castor is made, gelation time, exothermic peak temperature, and the dwell time of the interior water castor of mould, while solidifying according to resin and solidifying agent, exothermic peak temperature and the content of glass fibre and the Volume design of water castor goods go out needed pressure, the effective pressure 35KG/c ㎡ reached. pressing result is fine.
Consider the special property of SMC sheet material, SMC drain cover provided by the invention is very strict to adopted sheet production condition.Carry out slaking after the synthetic SMC sheet material of Resin adhesive and glass fibre, temperature is controlled at 50 degrees centigrade, and the time was controlled at about 6 hours.Mould is warmed up between 145 degrees centigrade-150 degrees centigrade, and the curing dwell time is 15 minutes, the SMC sheet material is carried out to the compacting of water grate, after depanning, adopts the cold mould of special-purpose steel structure to carry out the physics typing, and typing finishes backlash eye deburring packing.
The SMC sheet material adopted due to the manufacture water sieve is whole 4800 grams long yarns continuously; drain cover provided by the invention has adopted a kind of long yarn not modification, few mobile mould ' full formula ' charging method in mould protected; guarantee the effect that textile glass filament yarn strengthens; its operating method: together overlapping with the sheet material of the width 90% of mould along long yarn direction; 10% sheet material with the arranged in form of long yarn at water castor middle layer, long yarn=5000mm.According to the pressure area of water sieve, set die temperature 150 degree, hydropress uses the pressure of every 160 tons.
The content of the heavy metal of SMC drain cover provided by the invention is respectively: heavy metal lead (Pd) content 46ppm; Mercury (Hg) content 0 ppm; Cadmium (Cd) content 0 ppm; Sexavalent chrome (Cr6+) 34 ppm; Polybrominated biphenyl (PBB) 0.4 ppm; Poly Brominated Diphenyl Ethers (PBDE) 23 ppm.
The die design of SMC water castor Shui Bi water grate, adopt the 3 D stereo design software to carry out the design of science mechanics; Water castor (a kind of specification of water sieve provided by the invention) for long 5000mm * wide 120mm * high 20mm starts from planar design, by carrying, makes a concerted effort to test, and finally is defined as plane and adds lower profound mode.By trial-production water castor finished product, obtain the best angle of making a concerted effort to carry.
Mold material adopts the P20 steel, and material hardness reaches 32 degree, and along with die temperature is elevated to 145 while spending, P20 material hardness can reach the 39-41 degree.The carrying of mould own will reach 1000 tons of integrated carrying pressure, heat-resisting ability reach 240 degree-300 degree indeformable, also there is stronger mould toughness.
Embodiment 2
The lid of the drain cover of the present embodiment is shaped as rectangle, be of a size of: long 2500mm * wide 60mm * high 20mm, lid is provided with 18 water vents altogether, and water vent is distributed as two symmetrical row on lid, except two water vents of every row middle part, all the other 16 drain hole shapes, size are all identical.18 water vents that arrange on described lid are all the slotted hole that two ends form for rectangle for semicircle middle part, and the water vent of every row middle part is slightly less than the water vent that this is listed as other.A glance also is set in the centre of the drain cover lid place of the present embodiment rectangle.
Make the at first synthetic SMC sheet material of drain cover of SMC material, the material that forms the SMC sheet material of the present embodiment comprises synthetic resins, strongthener, subsidiary material.
Synthetic resins is unsaturated polyester resin and epoxy vingl ester resin, and strongthener is that the thick Yarn of short glass fiber or precursor and carbon fiber wire subsidiary material comprise filler, solidifying agent, thickening material, shrinking agent, releasing agent, tinting material and linking agent etc.SMC to the requirement of unsaturated polyester is: viscosity is low, can be good to the glass fibre wetting property; There is enough reactivities with thickening material, meet the thickening requirement; Curing speed adapts to, and with short production cycle, efficiency is high; Cured article has enough hot strengths, is convenient to the hot demoulding of goods; Cured article has enough toughness, and goods do not ftracture when some distortion occurs; Lower shrinking percentage.
Strongthener is the thick Yarn of short glass fiber or precursor and carbon fiber wire.In the unsaturated polyester moulding compound, for the strongthener of SMC, a lot of short glass fiber length dimensions are arranged at present, as the uninterrupted long Yarn etc. of 12 ㎜, 24 ㎜, 36 ㎜, content of glass fiber is 30%.
Subsidiary material comprise filler, solidifying agent, thickening material, shrinking agent, releasing agent, tinting material and linking agent etc.
After being ready to produce the SMC material, enter the production phase of SMC sheet material.
The flow process that SMC produces mainly comprises: the processes such as resin paste preparation, the operation of upper paste, fiber cutting sedimentation and dipping, resin multiviscosisty, and its technical process is as follows:
1. the preparation of resin paste and the operation of upper paste
Resin paste in the SMC formula is divided into to two portions, be that thickening material, releasing agent, part filler and vinylbenzene are a part, all the other components are another part, after measuring respectively, mixing, send on the SMC unit in the corresponding magazine arranged, the pipeline by speed-limiting switch while needing enters static mixer, by the time, quantitatively mix after, be transported to SMC Shang Hu district, be coated on polyethylene film uniformly.
2. dipping and compacting
Through coating resin, stick with paste, under be loaded on polyethylene film, under the traction of unit, enter the short glass fiber settling pocket, the short glass fiber uniform settling of well cutting is on resin paste, after meeting the requirements of sinkability, along with transmission mechanism leaves settling pocket, and be superimposed with the upper carrier film that is coated with resin paste, then enter in the roller battle array of a series of sequences straggly, under the effect of tension force and roller; Upper and lower bearing film tightly forces together resin paste and chopped strand, through repeatedly repeatedly making in short glass fiber solvent impregnated resin paste and driving bubble wherein away; Form the closely knit and accurate sheet material of uniform continuous SMC.Then enter thickening slaking between slaking.
The accurate sheet material of SMC is 50 degrees centigrade through excess temperature between slaking, the condition slaking that the time is 6 hours, and the accurate sheet material of SMC becomes the SMC sheet material of producing drain cover provided by the invention.Prepare after SMC sheet material step completes the mold process that enters the SMC drain cover.
Mould is warming up to 150 degrees centigrade, while solidifying according to resin and solidifying agent, exothermic peak temperature and the content of glass fibre and the Volume design of water castor goods go out needed pressure, the effective pressure 35KG/c ㎡ reached. according to the pressure area of water castor, hydropress uses the pressure of every 160 tons.Design resin speed of response and exothermic temperature (182 degrees centigrade), determine and solidify 15 minutes dwell times, starts the SMC sheet material is suppressed according to the temperature of having set, time, pressure.Depanning after compaction procedure completes, carry out the physics typing with the cold mould of special-purpose steel structure, final dotting punch deburring packing.
Abovely in conjunction with specific embodiments of the invention, be described in detail, but be not limitation of the present invention,, the shape of water vent how many such as the number of described water vent and the size of drain cover provided by the invention, the order of each step etc., every foundation technical spirit of the present invention all belongs to technical scope of the present invention to any simple modification made for any of the above embodiments.Also it should be noted that, according to drain cover of the present invention and the category of producing the method and technology scheme of this drain cover, comprise the arbitrary combination between each part mentioned above.
Claims (10)
1. a drain cover, comprise lid (1), it is characterized in that: described lid is to be made by the SMC advanced composite material.
2. drain cover as claimed in claim 1, it is characterized in that: described SMC matrix material comprises synthetic resins, strongthener, subsidiary material.
3. drain cover as claimed in claim 2, it is characterized in that: described synthetic resins comprises unsaturated polyester resin, epoxy vingl ester resin.
4. drain cover as claimed in claim 3 is characterized in that: described strongthener is the short glass fiber rove or is precursor and carbon fiber wire combination.
5. drain cover as claimed in claim 4, it is characterized in that: described subsidiary material comprise filler, solidifying agent, thickening material, shrinking agent, releasing agent, tinting material, linking agent.
6. drain cover as claimed in claim 1, it is characterized in that: described lid arranges at least one water vent (2).
7. drain cover as claimed in claim 6, it is characterized in that: described water vent (2) is shaped as Long Circle.
8. drain cover as described as claim 1 or 7, it is characterized in that: the centre that is positioned at described lid (1) arranges a hole (3).
9. a method of producing drain cover, it is characterized in that: drain cover is the described drain cover of above-mentioned arbitrary claim.
10. the method for production drain cover as claimed in claim 9, it is characterized in that: described production method comprises the steps:
A, preparation SMC material;
Preparation before B, mold pressing drain cover;
C, carry out water grate mold process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310238564.4A CN103467951B (en) | 2013-06-17 | 2013-06-17 | A kind of drain cover and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310238564.4A CN103467951B (en) | 2013-06-17 | 2013-06-17 | A kind of drain cover and production method thereof |
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| Publication Number | Publication Date |
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| CN103467951A true CN103467951A (en) | 2013-12-25 |
| CN103467951B CN103467951B (en) | 2016-06-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3088456A3 (en) * | 2015-04-10 | 2017-02-15 | Channell Commercial Corporation | Thermoset polymer utility vault lid |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2173288Y (en) * | 1993-11-15 | 1994-08-03 | 张国志 | Grate for sewer |
| CN1944530A (en) * | 2006-09-30 | 2007-04-11 | 李刚 | Low shrinking unsaturated polyester resin glass fibre reinforced mould plastic and its use |
-
2013
- 2013-06-17 CN CN201310238564.4A patent/CN103467951B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2173288Y (en) * | 1993-11-15 | 1994-08-03 | 张国志 | Grate for sewer |
| CN1944530A (en) * | 2006-09-30 | 2007-04-11 | 李刚 | Low shrinking unsaturated polyester resin glass fibre reinforced mould plastic and its use |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3088456A3 (en) * | 2015-04-10 | 2017-02-15 | Channell Commercial Corporation | Thermoset polymer utility vault lid |
| CN109385051A (en) * | 2015-04-10 | 2019-02-26 | 舍奈尔商业公司 | Thermosetting polymer facility library lid |
| US10358285B2 (en) | 2015-04-10 | 2019-07-23 | Channell Commercial Corporation | Thermoset polymer utility vault lid |
| CN109385051B (en) * | 2015-04-10 | 2020-08-28 | 舍奈尔商业公司 | Thermoset polymer utility vault lid |
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| CN103467951B (en) | 2016-06-08 |
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