CN1522844A - Material and method for manufacturing railway shield support and special apparatus therefor - Google Patents
Material and method for manufacturing railway shield support and special apparatus therefor Download PDFInfo
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- CN1522844A CN1522844A CNA031128653A CN03112865A CN1522844A CN 1522844 A CN1522844 A CN 1522844A CN A031128653 A CNA031128653 A CN A031128653A CN 03112865 A CN03112865 A CN 03112865A CN 1522844 A CN1522844 A CN 1522844A
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Abstract
The present invention relates to a new material, in particular it relates to a material for making railway protection cover supporting frame. The composition of said material includes (wt%) 25-28% of unsaturated polyester resin, 5-7% of low contraction agent, 29-39% of aluminium hydroxide filler, 1-1.8% of internal demoulding agnet, 0.340-0.346% of initiator, 0.28-0.35% of thickening agent, 18-22% of alkali-free twistless continuous roving, 8-12% of alkali-free twistless short-cut roving and 0.6-0.85% of pigment for adding colour. When the protection cover supporting frame is prouded by utilizing said material it can raise its strength, prolong its service life and enhance protection effect.
Description
Technical field
The present invention relates to a kind of new material, refer in particular to a kind of material of making the railway shielding support.
Background technology
Along with the continuous increase of car owning amount per capita, the crowded problem of road will become increasingly conspicuous, and for improving this situation, a lot of countries all adopt the light railway that is erected at underground or ground to improve the traffic capacity in city.
Must provide electric power to train when setting up light railway, power supply mode commonly used has two kinds: conductor rail is awarded electricity and is awarded with contact net.
Need to be provided with the 3rd track in the conductor rail electric feeding method, usually it is referred to as conductor rail, conductor rail is an energized conductor, is specifically designed to power supply.When laying, conductor rail is installed on the insulation column, insulation column is fixed on the concrete sleeper of circuit again, and insulation column plays a part insulation and supporting conductor rail.
Influence the electric conductivity of conductor rail for avoiding exposing to the sun and rain, on conductor rail, protective cover should be set.Existing protective cover has influence on the service life and the protection effect of conductor rail because used material is undesirable.
Summary of the invention
The object of the present invention is to provide a kind of material of railway shielding support and manufacture method and its special equipment of support made, when utilizing this manufacture of materials shielding support, can improve its intensity, prolong its service life, the any enhanced protection effect, and reduce production costs.
Its main technical schemes is that this material is mainly by unsaturated polyester resin 25～28%, shrinking agent 5～7%, filling aluminium hydrate 29～39%, inner pattern releasing agent applicable 1～1.8%, initator 0.340～0.346%, thickener 0.28～0.35%, the non-twist continuous rove 18～22% of alkali-free, the non-twist weak point of alkali-free are cut rove 8～12% and are formed.
For increasing the color of support, can in this material, add 0.6～0.85% pigment.
A kind of production method of railway shielding support is characterized in that
A, preparation resin paste: with unsaturated polyester resin 25～28%, shrinking agent 5～7%, filling aluminium hydrate 29～39%, inner pattern releasing agent applicable 1～1.8%, initator 0.340～0.346%, pigment 0.6～0.85% mix mutually, stir, add thickener 2.8～3.5% again, form resin paste;
B, dipping then: the non-twist short glass fiber rove 8～12% of alkali-free is immersed in respectively in the resin paste with the non-twist continuous glass fibre rove 18～22% of alkali-free, mixes thoroughly, fibre glass roving is fully soaked into;
Carry out c again, close sheet: will flood good fibre glass roving slabbing and be stacked together, the highest and lowest face be polyethylene film, the middle non-twist fibre glass roving of alkali-free for having prescinded is deposited to and has flooded on the good non-twist continuous glass fibre rove of alkali-free;
D, compacting: the glass fiber yarn that is stacked together is utilized the compression roll compacting;
E, rolling: utilize wrap-up to be wound into reel the glass fiber yarn of compacting;
F, slaking: in curing chamber, reel is carried out slaking, 38～42 ℃ of temperature, 10～14 hours time.
The equipment that a kind of production method of railway shielding support is used, it is characterized in that in this equipment, the creel that is used to discharge fibre glass roving is positioned at front end, in the yarn that creel is emitted, one enters the following resin paste storehouse that is installed on the frame, one enters the last resin paste storehouse that is installed on the frame, one enters in the three roller cutters that are installed on the frame, polyethylene film roller and following polyethylene film roller are set respectively in the bottom surface in upper and lower resin paste storehouse, one group of compression roll and wrap-up are arranged in the rear end of frame; Three roller cutters are between upper and lower resin paste storehouse; On last resin paste storehouse, reversing roller is set; On resin paste storehouse up and down, be provided for respectively controlling rove with the edge of a knife of resin paste amount.
Advantage of the present invention is because this material is mainly mixed by the non-twist length yarn of unsaturated-resin and alkali-free, compares with other composite, has good serviceability and higher intensity, and the service life of growing; Secondly this material is in that to add man-hour more convenient.
Unsaturated-resin in the material of the present invention (code name is HMC) is the most basic composition of HMC, give HMC good compression molding, have and solidify quick, productivity ratio advantages of higher, making final pressing---the railway shielding support has higher heat distortion temperature, excellent waterproof humidity resistance and good electrical property, and higher mechanical strength.
Shrinking agent wherein can independently be controlled the constriction coefficient of HMC, makes pressing reach good surface appearance quality and suitable dimensions precision.
After utilizing aluminium hydroxide to make filler, not only can make the appearance looks elegant of goods, and make goods have good electric property and fire resistance.
In order to solve the sticking to mould problem that HMC occurs in compacting is produced, in material, added the inner pattern releasing agent applicable zinc stearate, when being heated, can melt, flow to die surface mutually as second, stop unsaturated polyester resin and metal surface that affinity interaction takes place, so just can guarantee that the demoulding is smooth, produce stable.Why being referred to as inner pattern releasing agent applicable is because this releasing agent directly adds in the material, rather than is coated in the surface of mould therefor.
In HMC prescription resin compound, add initator,, thereby make HMC curing molding in die cavity with the two key generation copolyreaction in activated resin and the cross-linking monomer styrene.
In HMC sheet production process, it is very important to adopt magnesia to carry out thickening, and this is determining the success or the failure of entire making process.Should control respectively stage by stage when operation: in the glass fiber impregnated stage, what the thickening of resin will be enough is slow, to guarantee that glass fibre can obtain good dipping; After dipping is finished, require the thickening rate of resin enough fast again, be converted into the high viscosity state of not touching with one's hand rapidly; When reaching the appropriate viscosity of plastic operation, wish that again thickening stops immediately, to obtain long as far as possible storage life.
The alkali-free roving is a kind of reinforcing material, mainly adopts long and short two kinds of glass fibres.In order to satisfy of the specific (special) requirements of railway shielding support, adopt continuous long yarn and short yarn on special plane, to make sheet material to intensity.Long yarn wherein is used to obtain vertically required intensity of support; Short yarn is used to obtain laterally required intensity index of support.
Description of drawings
Fig. 1 is an equipment drawing of the present invention.
The specific embodiment
The production method of railway shielding support
A, preparation resin paste: with unsaturated polyester resin 25～28%, shrinking agent 5～7%, filling aluminium hydrate 29～39%, inner pattern releasing agent applicable 1～1.8%, initator 0.340～0.346%, pigment 0.6～0.85% mix mutually, stir, add thickener 2.8～3.5% again, form resin paste;
B, dipping then: the non-twist short glass fiber rove 8～12% of alkali-free is immersed in respectively in the resin paste with the non-twist continuous glass fibre rove 18～22% of alkali-free, mixes thoroughly, fibre glass roving is fully soaked into;
Carry out c again, close sheet: will flood good fibre glass roving slabbing and be stacked together, the highest and lowest face be polyethylene film, the middle non-twist fibre glass roving of alkali-free for having prescinded is deposited to and has flooded on the good non-twist continuous glass fibre rove of alkali-free;
D, compacting: the glass fiber yarn that is stacked together is utilized the compression roll compacting;
E, rolling: utilize wrap-up to be wound into reel the glass fiber yarn of compacting;
F, slaking: in curing chamber, reel is carried out slaking, 38～42 ℃ of temperature, 10～14 hours time.
In making the used equipment of this railway shielding support, the creel 1 that is used to discharge fibre glass roving is positioned at front end, in the yarn that creel 1 is emitted, one enters the following resin paste storehouse 3 that is installed on the frame 11, one enters the last resin paste storehouse 6 that is installed on the frame 11, one enters in the three roller cutters 4 that are installed on the frame 11, last, following resin paste storehouse 3,6 bottom surface is provided with polyethylene film roller 7 and following polyethylene film roller 2 respectively, one group of compression roll 8 and wrap-up 9 are arranged in the rear end of frame 11, three roller cutters 4 are positioned at, following resin paste storehouse 3, between 6, before last resin paste storehouse 6, reversing roller 5 is set.
Deposit enough cylindric fibre glass rovings and roll into a ball for the unit use on creel 1, yarn is divided into A, B, C three tunnel leads to unit;
Following polyethylene film roller 2 provides OPE (being polyethylene) film for unit continuously, and the film rod has two, and one of them is standby;
Following resin paste storehouse 3 is used for storing and the impregnated glass fiber yarn, by the artificial resin paste that has prepared that in the storehouse, adds, when resin paste storehouse 3 under the C road rove process of creel 1, rove is flooded by resin paste, on following resin paste storehouse 3, be provided for controlling rove with the edge of a knife of resin paste amount, the dipping rove travels forward continuously by edge of a knife gap, is guaranteed the proportioning of resin paste by edge of a knife gap.
Three roller cutters 4 are driven by motor reducer 10, and when the B road rove from creel 1 passed through cutter, continuous rove was formed to 25 millimeters short yarn, free being deposited to equably on the continuous rove in C road that had flooded resin paste.
Last resin paste storehouse 6 is the same with following resin paste storehouse 3, earlier by the artificial resin paste that has prepared that in the storehouse, adds, when the last resin paste of rove process storehouse, A road from creel, continuous rove is flooded by resin paste, on last resin paste storehouse 6, be provided for controlling rove with the edge of a knife of resin paste amount, the rove that dipping is good passes through the continuous motion forward of edge of a knife gap equally, is guaranteed the proportioning of resin paste by edge of a knife gap.A road rove changes direction through behind the reversing roller 5, and the continuous rove that comes with the C road closes sheet;
Upper film roller 7 is the same with following film roll 2, and same for unit provides the OPE film continuously, standby film roll is used when changing;
The sheet material that 8 pairs of compression rolls close sheet up and down kneads, crooked, extension and compacting, makes it to become the HMC sheet material; The HMC sheet material that wrap-up 9 is used for producing is rolled into the reel of constant weight, is convenient to deposit and transport.
Among the figure 12 is transmission mechanism, is made up of motor and stepless speed reducer, for unit provides power.
The prescription of above-mentioned resin paste comprises the visible the following examples of concrete ratio that fibre glass roving is shared:
Embodiment 1
In this material, unsaturated polyester resin 28%, shrinking agent 5%, filling aluminium hydrate 36%, inner pattern releasing agent applicable 1%, initator 0.340%, thickener 0.28%, the non-twist continuous rove 18% of alkali-free, the non-twist weak point of alkali-free is cut rove 10.78%, pigment 0.6%.38 ℃ of its curing temperatures, 14 hours curing times.
In this material, unsaturated polyester resin 25%, shrinking agent 7%, filling aluminium hydrate 35%, inner pattern releasing agent applicable 1.8%, initator 0.346%, thickener 0.35%, the non-twist continuous rove 18% of alkali-free, the non-twist weak point of alkali-free is cut rove 11.654%, pigment 0.85%.42 ℃ of its curing temperatures, 10 hours curing times.
Embodiment 3
In this material, unsaturated polyester resin 25%, shrinking agent 5%, filling aluminium hydrate 39%, inner pattern releasing agent applicable 1.157%, initator 0.343%, thickener 0.30%, the non-twist continuous rove 20.6% of alkali-free, the non-twist weak point of alkali-free is cut rove 8%, pigment 0.6%.39 ℃ of its curing temperatures, 13 hours curing times.
In this material, unsaturated polyester resin 26.6%, shrinking agent 6.3%, filling aluminium hydrate 34.3%, inner pattern releasing agent applicable 1.4%, initator 0.343%, thickener 0.315%, the non-twist continuous rove 20% of alkali-free, the non-twist weak point of alkali-free is cut rove 10%, pigment 0.742%.40 ℃ of its curing temperatures, 12 hours curing times.
Embodiment 5
In this material, unsaturated polyester resin 28%, shrinking agent 7%, filling aluminium hydrate 29%, inner pattern releasing agent applicable 1.8%, initator 0.340%, thickener 0.35%, the non-twist continuous rove 22% of alkali-free, the non-twist weak point of alkali-free is cut rove 10.66%, pigment 0.85%.41 ℃ of its curing temperatures, 11 hours curing times.
Embodiment 6
In this material, unsaturated polyester resin 27%, shrinking agent 6.68%, filling aluminium hydrate 33%, inner pattern releasing agent applicable 1.5%, initator 0.340%, thickener 0.28%, the non-twist continuous rove 19.18% of alkali-free, the non-twist weak point of alkali-free is cut rove 12%, pigment 0.7%.42 ℃ of its curing temperatures, 10 hours curing times.
Embodiment 7
In this material, unsaturated polyester resin 26%, shrinking agent 6%, filling aluminium hydrate 32%, inner pattern releasing agent applicable 1.8%, initator 0.340%, thickener 0.33%, the non-twist continuous rove 21% of alkali-free, the non-twist weak point of alkali-free is cut rove 11%, pigment 0.6～0.85%.38 ℃ of its curing temperatures, 14 hours curing times.
Claims (7)
1, railway shielding support, the material that it is characterized in that this support is mainly by unsaturated polyester resin 25～28%, shrinking agent 5～7%, filling aluminium hydrate 29～39%, inner pattern releasing agent applicable 1～1.8%, initator 0.340～0.346%, thickener 0.28～0.35%, the non-twist continuous rove 18～22% of alkali-free, the non-twist weak point of alkali-free are cut rove 8～12% and are formed.
2, support according to claim 1 is characterized in that also containing 0.6～0.85% pigment in this material.
3, a kind of production method of railway shielding support is characterized in that
A, preparation resin paste: with unsaturated polyester resin 25～28%, shrinking agent 5～7%, filling aluminium hydrate 29～39%, inner pattern releasing agent applicable 1～1.8%, initator 0.340～0.346%, pigment 0.6～0.85% mix mutually, stir, add thickener 2.8～3.5% again, form resin paste;
B, dipping then: the non-twist short glass fiber rove 8～12% of alkali-free is immersed in respectively in the resin paste with the non-twist continuous glass fibre rove 18～22% of alkali-free, mixes thoroughly, fibre glass roving is fully soaked into;
Carry out c again, close sheet: will flood good fibre glass roving slabbing and be stacked together, the highest and lowest face be polyethylene film, the middle non-twist fibre glass roving of alkali-free for having prescinded is deposited to and has flooded on the good non-twist continuous glass fibre rove of alkali-free;
D, compacting: the glass fiber yarn that is stacked together is utilized the compression roll compacting;
E, rolling: utilize wrap-up to be wound into reel the glass fiber yarn of compacting;
F, slaking: in curing chamber, reel is carried out slaking, 38～42 ℃ of temperature, 10～14 hours time.
4, the equipment that a kind of production method of railway shielding support is used, it is characterized in that in this equipment, the creel (1) that is used to discharge fibre glass roving is positioned at front end, in the yarn that creel (1) is emitted, one enters the following resin paste storehouse (3) that is installed on the frame (11), one enters the last resin paste storehouse (6) that is installed on the frame (11), one enters in the three roller cutters (4) that are installed on the frame (11), last, following resin paste storehouse (6), (3) bottom surface is provided with polyethylene film roller (7) and following polyethylene film roller (2) respectively, and one group of compression roll (8) and wrap-up (9) are arranged in the rear end of frame (11).
5, equipment according to claim 4 is characterized in that three roller cutters (4) are positioned between upper and lower resin paste storehouse (3), (6).
6, equipment according to claim 4 is characterized in that being provided with reversing roller (5) on last resin paste storehouse (6).
7, equipment according to claim 4, it is characterized in that on up and down resin paste storehouse (6), (3), being provided for respectively controlling rove with the edge of a knife of resin paste amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031128653A CN1522844A (en) | 2003-02-20 | 2003-02-20 | Material and method for manufacturing railway shield support and special apparatus therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031128653A CN1522844A (en) | 2003-02-20 | 2003-02-20 | Material and method for manufacturing railway shield support and special apparatus therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1522844A true CN1522844A (en) | 2004-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031128653A Pending CN1522844A (en) | 2003-02-20 | 2003-02-20 | Material and method for manufacturing railway shield support and special apparatus therefor |
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| Country | Link |
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| CN (1) | CN1522844A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205649A (en) * | 2011-01-22 | 2011-10-05 | 中国矿业大学 | Method for producing glass fiber reinforced plastic anchor pole |
| CN103213231A (en) * | 2013-03-20 | 2013-07-24 | 成都顺美国际贸易有限公司 | Mold pressing method for unidirectional high strength SMC molded product |
-
2003
- 2003-02-20 CN CNA031128653A patent/CN1522844A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205649A (en) * | 2011-01-22 | 2011-10-05 | 中国矿业大学 | Method for producing glass fiber reinforced plastic anchor pole |
| CN102205649B (en) * | 2011-01-22 | 2013-04-03 | 中国矿业大学 | Method for producing glass fiber reinforced plastic anchor pole |
| CN103213231A (en) * | 2013-03-20 | 2013-07-24 | 成都顺美国际贸易有限公司 | Mold pressing method for unidirectional high strength SMC molded product |
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