CN1936200A - Glass-fiber reinforced thermo-setting resin inspection manhole cover - Google Patents
Glass-fiber reinforced thermo-setting resin inspection manhole cover Download PDFInfo
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- CN1936200A CN1936200A CN 200610048353 CN200610048353A CN1936200A CN 1936200 A CN1936200 A CN 1936200A CN 200610048353 CN200610048353 CN 200610048353 CN 200610048353 A CN200610048353 A CN 200610048353A CN 1936200 A CN1936200 A CN 1936200A
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- glass
- fiber reinforced
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- manhole cover
- inspection manhole
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Abstract
The invention relates to a manhole cover. It improves the bearing ability and useful life of normal glass steel manhole over. It adopts SMC flake plastic and resin concrete molding through die stamping to extremely improve the bearing ability and useful life, and lower manufacturing cost.
Description
Technical field
The present invention relates to the manhole well lid that uses in a kind of urban construction municipal engineering, specifically a kind of glass-fiber reinforced thermo-setting resin inspection manhole cover.
Background technology
The material that manhole cover is used, initial major part is the steel concrete material, because its fragility is big, easy defective such as aging, easy fracture, is progressively replaced by cast iron, ductile iron material.Now cast iron (containing ductile iron) well lid portion is more than 90%, and especially the ductile iron well lid is compared with cast iron quality, crisp because of its material, easily get rusty, weight bearing power all makes moderate progress, therefore, use amount is increasing.Because casting iron well lid has recovery value, usually becomes lawless person's target, and causes the accident of car crash to happen occasionally because of well lid is stolen.In order to solve the stolen and various problem that disturbs residents of well lid, mainly take two kinds of methods at present: the one, anti-theft device is installed on casting iron well lid, but is adopted anti-theft device to increase cost, but can not tackle the problem at its root, and bring inconvenience to use; Also have a kind of valid approach to adopt composite material to make well lid exactly, can fundamentally solve the stolen problem of well lid.
The process of the glass fibre reinforced plastic manhole covers of domestic development generally has 1. resin transfer molding (RTM) technology.Because resin content is higher, production efficiency is general, is not suitable for large-scale production; 2. hand pastes and makes technology.The well lid of made is not enough because of supporting capacity, only is suitable for using also uncontested advantage at greenbelt; 3. mould pressing process.Well lid is the bearing structure product, and glass fibre reinforced plastic manhole covers preferably adopts mould pressing process, and product structure is dense.Mould pressing process generally all adopts the SMC moulding compound, and SMC compression molding reinforcing material is the short fiber of 10～50mm, and the intensity of short fiber has only 20～30% of continuous fiber, therefore only uses short fiber, then is difficult to make the supporting capacity of well lid to reach instructions for use.The enterprise that has in this case adds reinforcing bar in well lid.From supporting capacity is obviously to have improved, but since the material of reinforcing bar and composite material differ widely, the differing greatly of its coefficient of thermal expansion, rebar surface often gets rusty in addition, causes its surface and resin-bonded bad, has reduced application life.
Summary of the invention
Problem to be solved by this invention is to overcome the deficiencies in the prior art, provides a kind of bearing strength high and durable glass fibre reinforced plastic manhole covers.
The present invention is achieved in that a kind of glass-fiber reinforced thermo-setting resin inspection manhole cover, and this well lid is made by press moulding mode by SMC sheet molding compound and resin concrete, and wherein the part by weight of SMC sheet molding compound and resin concrete is 1: 4.
The composition of resin concrete and parts by weight comprise 100 parts of unsaturated polyester resins among the present invention, 4 parts of initators, 0.1～2 part of accelerator, 0.3 part of durafiber, 100 parts of quartz powders, 215 parts of fine sands, 255 parts of coarse sands.The SMC sheet molding compound should be cut out according to form of structure, the feed location of well lid before compacting.
Press such scheme, described initator is that 50% cyclohexanone peroxide dibutyl ester is stuck with paste, and it can replace with methyl ethyl ketone peroxide solution, and weight fraction is 2 parts.
Press such scheme, described accelerator being contains the styrene solution of 6% naphthoic acid cobalt.
Press such scheme, described durafiber length is 19mm, and handles through silane coupling agent solution KH-560.
Press such scheme, described quartz powder is 100～200 orders, and the fine sand diameter is 0.15～1.2mm, and the coarse sand diameter is 1.2～5.0mm.
This well lid adopts fish maw type structure design on form of structure.
This well lid obtains following test result through performance test: general type well lid is broken under the 100kN trial load, and the permanent set that is loaded on for 5 times behind the 66.7kN that circulates is not more than D/500; Heavy well lid does not destroy under the 240kN trial load, and the permanent set that is loaded on for 5 times behind the 1607kN that circulates is not more than D/500.
The invention has the beneficial effects as follows: high-strength light, anti-fatigue performance is good, fail-safety is good, moulding process is superior, corrosion-resistant, specious, the pattern designability is strong, and can solve the stolen problem of casting iron well lid well; Make the supporting capacity of glass fibre reinforced plastic manhole covers be largely increased simultaneously, and prolonged application life.Structurally adopt fish maw type structure design, saved raw material and simplified mould, reduced the manufacturing cost of well lid.
Description of drawings
Fig. 1 is a die press technology for forming flow process of the present invention.
Fig. 2 is the resin concrete preparation process.
The specific embodiment
Embodiment 1
The technical scheme of this invention glass-fiber reinforced thermo-setting resin inspection manhole cover is achieved in that to be made SMC sheet molding compound and resin concrete by press moulding mode, its mould pressing process flow chart as shown in Figure 1.
Before carrying out mould pressing process, reply SMC sheet molding compound is cut out.The SMC sheet molding compound has very big influence to molding process and quality of item, therefore should at first understand the quality of SMC sheet molding compound, as resin paste prescription, glass fiber content, substance, film fissility, quality uniformity etc., cuts out then.To make model earlier, cut out material according to model again according to the form of structure of well lid, shape and the size that feed location decision SMC sheet molding compound is cut out when cutting out.For preventing the pollution of introduced contaminants, the film up and down of SMC sheet molding compound is thrown off before charging again.
To the preparation process of resin concrete as shown in Figure 2.The batching of resin concrete and parts by weight are: 100 parts of unsaturated polyester resins, 4 parts of initators, 0.1～2 part of accelerator, 0.3 part of durafiber, 100 parts of quartz powders, 215 parts of fine sands, 255 parts of coarse sands.Wherein initator is that 50% cyclohexanone peroxide dibutyl ester is stuck with paste; Accelerator being contains the styrene solution of 6% naphthoic acid cobalt; The length of durafiber is 19mm, before using reply its carry out surfacing: durafiber is carried out loose, in silane coupling agent solution KH-560, soaks into the back and take out and dry, can be standby; Quartz powder is 100～200 orders, and the fine sand diameter is 0.15～1.2mm, and the coarse sand diameter is 1.2～5.0mm.
After the SMC sheet molding compound of cutting out and resin concrete entered die cavity, forcing press was descending fast, when upper and lower mould coincide, slowly applied required briquetting pressure to 6～8Mpa, and the dwell time is 15 minutes, and forming temperature is remained between 135～145 ℃.Through after certain curing system, well lid is promptly plastic.
Embodiment 2
To the preparation process of resin concrete as shown in Figure 2.The batching of resin concrete and parts by weight are: 100 parts of unsaturated polyester resins, 2 parts of initators, 0.1～2 part of accelerator, 0.3 part of durafiber, 100 parts of quartz powders, 215 parts of fine sands, 255 parts of coarse sands.Wherein initator is a methyl ethyl ketone peroxide solution; Accelerator being contains the styrene solution of 6% naphthoic acid cobalt; The length of durafiber is 19mm, before using reply its carry out surfacing: durafiber is carried out loose, in silane coupling agent solution KH-560, soaks into the back and take out and dry, can be standby; Quartz powder is 100～200 orders, and the fine sand diameter is 0.15～1.2mm, and the coarse sand diameter is 1.2～5.0mm.
Other are with embodiment 1.
Claims (8)
1, a kind of glass-fiber reinforced thermo-setting resin inspection manhole cover is characterized in that: described well lid is made by press moulding mode by SMC sheet molding compound and resin concrete, and wherein the part by weight of SMC sheet molding compound and resin concrete is 1: 4.
2, glass-fiber reinforced thermo-setting resin inspection manhole cover according to claim 2, it is characterized in that: the composition of described resin concrete and parts by weight are 100 parts of unsaturated polyester resins, 4 parts of initators, 0.1～2 part of accelerator, 0.3 part of durafiber, 100 parts of quartz powders, 215 parts of fine sands, 255 parts of coarse sands.
3, glass-fiber reinforced thermo-setting resin inspection manhole cover according to claim 1 is characterized in that: described SMC sheet molding compound should be cut out according to form of structure, the feed location of well lid before compacting.
4, glass-fiber reinforced thermo-setting resin inspection manhole cover according to claim 1 is characterized in that: described initator is that 50% cyclohexanone peroxide dibutyl ester is stuck with paste,
5, according to claim 1 or 4 described glass-fiber reinforced thermo-setting resin inspection manhole covers, it is characterized in that: the initator that described 50% cyclohexanone peroxide dibutyl ester is stuck with paste can replace with methyl ethyl ketone peroxide solution, and its weight fraction is 2 parts.
6, glass-fiber reinforced thermo-setting resin inspection manhole cover according to claim 1 is characterized in that: described accelerator being contains the styrene solution of 6% naphthoic acid cobalt.
7, glass-fiber reinforced thermo-setting resin inspection manhole cover according to claim 1 is characterized in that: the length of described durafiber is 19mm, and handles through silane coupling agent solution KH-560.
8, glass-fiber reinforced thermo-setting resin inspection manhole cover according to claim 1 is characterized in that: described quartz powder is 100～200 orders, and the fine sand diameter is 0.15～1.2mm, and the coarse sand diameter is 1.2～5.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610048353A CN100577926C (en) | 2006-09-26 | 2006-09-26 | Glass-fiber reinforced thermo-setting resin inspection manhole cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610048353A CN100577926C (en) | 2006-09-26 | 2006-09-26 | Glass-fiber reinforced thermo-setting resin inspection manhole cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1936200A true CN1936200A (en) | 2007-03-28 |
| CN100577926C CN100577926C (en) | 2010-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610048353A Expired - Fee Related CN100577926C (en) | 2006-09-26 | 2006-09-26 | Glass-fiber reinforced thermo-setting resin inspection manhole cover |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322097A (en) * | 2011-07-25 | 2012-01-18 | 无锡市新大地合成材料有限公司 | SMC (sheet moulding compound) mould pressing resin finished well and manufacturing method thereof |
| CN103804872A (en) * | 2014-02-11 | 2014-05-21 | 烟台泰和新材料股份有限公司 | Aramid fiber composite material and well lid prepared by utilizing same |
| CN105198280A (en) * | 2015-08-24 | 2015-12-30 | 泉州市路通管业科技有限公司 | Overall resin inspection well and preparation method thereof |
| CN105368025A (en) * | 2015-12-08 | 2016-03-02 | 东营市天诚建材有限公司 | Marble-imitated glass fiber reinforced plastics manhole cover and production process thereof |
| CN106281180A (en) * | 2016-08-27 | 2017-01-04 | 安徽天瞳智能科技有限公司 | A kind of resin adhesive with superior heat-stability |
| CN106381118A (en) * | 2016-08-27 | 2017-02-08 | 安徽天瞳智能科技有限公司 | Resin adhesive with high mechanical strength and good heat stability |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1445565A (en) * | 1972-08-02 | 1976-08-11 | Cement & Concrete Ass | Concrete articles |
| CA2277683A1 (en) * | 1998-07-22 | 2000-01-22 | Dainippon Ink And Chemicals, Inc. | Resin concrete composition and molded article thereof |
| CN2437774Y (en) * | 2000-07-17 | 2001-07-04 | 芜湖市东方防腐有限公司 | Glass fibre reinforced plastic bar resin concrete structural member |
| JP2003003559A (en) * | 2001-06-21 | 2003-01-08 | Miyama Ind Corp | Grating made of synthetic resin |
| CN2584688Y (en) * | 2002-11-22 | 2003-11-05 | 申晓宏 | Glass fibre reinforced manhole cover, galley grate |
| CN1749488A (en) * | 2005-10-02 | 2006-03-22 | 陈忆 | Method for producing inspection well cover, water grate and well seat combined piece |
-
2006
- 2006-09-26 CN CN200610048353A patent/CN100577926C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322097A (en) * | 2011-07-25 | 2012-01-18 | 无锡市新大地合成材料有限公司 | SMC (sheet moulding compound) mould pressing resin finished well and manufacturing method thereof |
| CN103804872A (en) * | 2014-02-11 | 2014-05-21 | 烟台泰和新材料股份有限公司 | Aramid fiber composite material and well lid prepared by utilizing same |
| CN105198280A (en) * | 2015-08-24 | 2015-12-30 | 泉州市路通管业科技有限公司 | Overall resin inspection well and preparation method thereof |
| CN105368025A (en) * | 2015-12-08 | 2016-03-02 | 东营市天诚建材有限公司 | Marble-imitated glass fiber reinforced plastics manhole cover and production process thereof |
| CN105368025B (en) * | 2015-12-08 | 2017-06-23 | 东营市天诚建材有限公司 | The glass fibre reinforced plastic manhole covers and its production technology of a kind of parian |
| CN106281180A (en) * | 2016-08-27 | 2017-01-04 | 安徽天瞳智能科技有限公司 | A kind of resin adhesive with superior heat-stability |
| CN106381118A (en) * | 2016-08-27 | 2017-02-08 | 安徽天瞳智能科技有限公司 | Resin adhesive with high mechanical strength and good heat stability |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100577926C (en) | 2010-01-06 |
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Granted publication date: 20100106 Termination date: 20110926 |