CN1238179C - Manufacturing method of polyurethane conveying belt - Google Patents
Manufacturing method of polyurethane conveying belt Download PDFInfo
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- CN1238179C CN1238179C CN 02135740 CN02135740A CN1238179C CN 1238179 C CN1238179 C CN 1238179C CN 02135740 CN02135740 CN 02135740 CN 02135740 A CN02135740 A CN 02135740A CN 1238179 C CN1238179 C CN 1238179C
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Abstract
The present invention relates to a method for manufacturing a polyurethane conveying belt, which comprises: belt mould manufacture comprises the steps that a belt core is braided by a braiding machine, a PVC paste material is prepared from EPVC, etc., and the belt core is immersed in the PVC paste material, is plasticized and shaped by high temperature; prepolymer synthesis comprises the steps that polymer polyhydric alcohol is put in a reaction kettle, and reacts with isocyanate at a certain temperature and vacuum degree so that the prepolymer is manufactured; chain propagation comprises the steps that the prepolymer is stirred and degassed at a certain temperature and vaccine degree so that a component A is formed, and liquid-state chain extender and an additive agent are put in the reaction kettle, are stirred, and are dehydrated at a certain temperature so that a component B is formed; mixed spraying comprises the steps that the component A and the component B are loaded into a mixed chamber of a reaction injection machine by a delivery pump with automatic metering and pressurization by certain proportioning and pressure for uniform mixture; a mixture is sprayed to the belt mould plasticized and shaped by high temperature by a spraying machine for rapid solidification and shaping. The method can be called a spraying method, and has the advantages of high efficiency, uniform coating, easy control for thickness and convenient procedure.
Description
Affiliated technical field
The present invention relates to the manufacture method of the conveyer belt of ribbon conveyer, particularly a kind of polyethane conveyer belt.
Background technology
The manufacture method of the conveyer belt of the ribbon conveyer of known technology for canvas core rubber conveyer belt, generally adopts the cover layer mounting method; For the resin transfer band, adopt infusion process, cladding process, rolling process.Mounting method: comprise the sandwich layer moulding, at the covering glue layer of fitting on the calender, operation such as on vulcanizer, vulcanize.Infusion process: belt carcass repeatedly immerses dipping tank, imports the plasticizing of plasticizing chamber behind the dipping PVC thickener, or pastes rubber cover, vulcanizes on vulcanizer.Cladding process: comprise paste producing, blade coating, fusion, cool off and batch; Equipment is coating machine and fusion drying room.Rolling process: PVC rolls with calender with suspension method.Also having a kind of nylon base conveyer belt, is after nylon base is extruded, coating adhesive, applying cover layer, cutting.Deficiency in order to top manufactured polyethane conveyer belt is: efficient is lower, and the coating uniformity is poor, the difficult control of thickness, and operation is complicated.
Summary of the invention
Low for the efficient that overcomes prior art, as to apply irregular, the difficult control of thickness, complex procedures deficiency, the manufacture method of the polyethane conveyer belt that the invention provides a kind of production efficiency height, apply evenly, thickness is easy to control, operation is easy.
The technical solution adopted for the present invention to solve the technical problems is:
The step of manufacturing of polyethane conveyer belt is as follows:
1. make the band embryo: with synthetic fibers and cotton, use the high-tenacity braider, the braiding belt carcass; Simultaneously, stick with paste resin, plasticizer, stabilizing agent etc., make the PVC thickener by the prescription weighing by PVC; Belt carcass is flooded in the PVC thickener, and the band embryo is made in high temperature plasticizing typing under 170～200 ℃ temperature.
2. synthetic performed polymer: polymer polyatomic alcohol is placed reactor, under 100～140 ℃ of temperature and 0.98～0.1MPa vacuum, stir dehydration 1～2 hour, lay down vacuum, be cooled to about 50 ℃,, slowly heat again when reacting to 80 ℃ again with the under agitation free temperature reaction of the isocyanates that measures, about insulation reaction 2 hours, promptly become performed polymer.
3. chain extension: the performed polymer that measures under 80～85 ℃ of temperature and 0.98～0.1MPa vacuum, is stirred about degassing 30min, form the A component; With pure chain extender and additive, drop in proportion in the reactor, 110～125 ℃ temperature, behind the stirring dehydration 30min, form the B component.
4. mix spraying: with A, B component respectively through separately the automatic gauge and the delivery pump of pressurization, in proportion and with certain pressure, deliver to the mixing chamber of reaction injection machine, after mixing, braking mouth ejection by flush coater, material is sprayed on the band embryo of firm high temperature plasticizing typing, fast curing-formed, form the polyurethane covering glue layer.The inventive method is called spraying process again.
The technical solution adopted for the present invention to solve the technical problems can also be:
Its polyurethane rubber cover constituent content is: (for the weight ratio content, below identical)
100 parts of PEPA: CMA-24EG
30～35 parts of vulcabond: MD2-100
Liquid chain extender: 10～14 parts of 1,4 butanediols
Additive: wherein catalyst C-102 is 0.05～0.15 part.
When polyethane conveyer belt is fire retarding conveying band, need in the PVC thickener, add fire retardant, antistatic additive; And in the additive of B component, increase fire retardant, antistatic additive.At this moment, polyurethane rubber cover constituent content is: PEPA: 100 parts of CMA-24EG
30～35 parts of vulcabond: MD2-100
Liquid chain extender: 10～14 parts of 1,4 butanediols
Its polymer polyatomic alcohol also can adopt polyether polyol.
Its belt carcass is woven to directly through the braiding belt carcass.
Beneficial effect of the present invention: the production efficiency height, apply evenly, thickness is easy to control, and operation is easy.
The specific embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1:
Polyurethane flame-proof conveyer belt step of manufacturing of the present invention is as follows:
The band embryo manufacturing process: belt carcass is selected excellent synthetic fibers for use, for example: dacron thread, nylon yarn, Polyamide Yarns etc. and cotton, pool capital in proportion and twist thread, through the high-tenacity braider be woven into more than three layers or three layers directly through the integral fabric belt carcass.Be woven into directly through the integral fabric belt carcass, after vacuum depilation and dry the processing, in the PVC thickener, flood, under 170～200 ℃ temperature, carry out high temperature plasticizing typing, make the band embryo.
The PVC thickener is stuck with paste resin, plasticizer, stabilizing agent, fire retardant, antistatic additive, colouring agent etc. by PVC, makes by the prescription weighing.Wherein: fire retardant adopts antimony oxide, Firebrake ZB, liquid chlorinated paraffin, aluminium hydroxide, three virtues etc.Antistatic additive adopts TX-6, TC-90, NP-6 etc.
2. performed polymer is synthetic:
Polymer polyatomic alcohol is placed reactor, under 100～140 ℃ temperature and 0.98～0.1MPa vacuum, stir dehydration 1～2 hour, lay down vacuum, be cooled to about 50 ℃, with the isocyanate reaction that measures consumption, under agitation free temperature reaction is slowly heated when reacting to 80 ℃ more again, about insulation reaction 2 hours, be performed polymer.Wherein: polymer polyatomic alcohol comprises polyester-type, polyether-type and other polymerized polyalcohol.
3. chain extension: with the performed polymer that measures, under 80～85 ℃ of temperature and 0.98～0.1MPa vacuum, stir about degassing 30min, form the A component; With liquid chain extender, fire retardant, antistatic additive and other additive, drop in proportion in the reactor, 110～125 ℃ temperature, behind the stirring dehydration 30min, form the B component.Wherein: liquid chain extender adopts 1,4 butanediol etc.; Fire retardant adopts TCEP etc.; Antistatic additive adopts TX-6, TC-90, NP-6 etc.
4. mix spraying: with A component and B component through separately the automatic gauge and the delivery pump of pressurization, accurately metering in proportion, and with certain pressure, deliver to the mixing chamber of reaction injection machine respectively, after mixing,, material is sprayed on the band embryo of the typing of high temperature plasticizing just by the braking mouth ejection of flush coater, curing molding forms fire-retardant upper and lower cover layer apace.
The proportioning of polyurethane flame-proof conveyor belt covering sizing material is given an example:
100 parts of PEPA: CMA-24EG
32.5 parts of vulcabond: MD2-100
Liquid chain extender: 12 parts of 1,4 butanediols
Additive: 0.1 part of catalyst C-102
11.5 parts of fire retardant: TCEP
3.5 parts of antistatic additive: TX-6 or TC-90
The weight ratio of PEPA CMA-24EG and vulcabond MD2-100, liquid chain extender 1,4 butanediol, catalyst C-102, fire retardant TCEP, antistatic additive TX-6 content also can for: 100 parts: 30 parts: 10 parts: 0.05 part: 8 parts: 3 parts.
The weight ratio of PEPA CMA-24EG and vulcabond MD2-100, liquid chain extender 1,4 butanediol, catalyst C-102, fire retardant TCEP, antistatic additive TC-90 content can also for: 100 parts: 35 parts: 14 parts: 0.115 part: 15 parts: 4 parts.
The proportioning of polyurethane flame-proof conveyer belt belt carcass thickener is: PVC sticks with paste resin (EPVC): 100 parts, fire retardant TCEP: 8～15 parts, antistatic additive TX-6 or TC-90: 3～4 parts, all the other are an amount of plasticizer, stabilizing agent and colouring agent.
Should reach fire-retardant, the antistatic requirement of using under the coal mine as the PU fire retarding conveying band, and, reach the requirement of Chinese coal industry standard MT147-87 by the roll friction test.
Embodiment 2:
The non-flame retardant polyurethane conveyer belt of the present invention manufacture method, substantially the same manner as Example 1, difference is:
When 1. making the band embryo, do not add fire retardant, antistatic additive in the PVC thickener of belt carcass dipping usefulness.
2. when chain extension, in the B component, do not add fire retardant, antistatic additive.The proportioning of other composition can be identical for example with three kinds of proportionings among the embodiment 1 in the polyurethane cover layer sizing material.
3. belt carcass be woven into directly through belt carcass or common belt carcass.
Claims (5)
1. the manufacture method of a polyethane conveyer belt, its step is as follows:
1. make the band embryo: with synthetic fibers and cotton, use the high-tenacity braider, the braiding belt carcass; Simultaneously, stick with paste resin, plasticizer, stabilizing agent, make the PVC thickener by the prescription weighing by PVC; Belt carcass is flooded in the PVC thickener, and the band embryo is made in high temperature plasticizing typing under 170～200 ℃ temperature;
2. synthetic performed polymer: polymer polyatomic alcohol is placed reactor, under 100～140 ℃ of temperature and 0.98～0.1MPa vacuum, stir dehydration 1～2 hour, lay down vacuum, be cooled to about 50 ℃,, slowly heat again when reacting to 80 ℃ again with the under agitation free temperature reaction of the isocyanates that measures, about insulation reaction 2 hours, promptly become performed polymer;
3. chain extension: the performed polymer that measures under 80～85 ℃ of temperature and 0.98～0.1MPa vacuum, is stirred about degassing 30min, form the A component; With liquid chain extender and additive, drop in proportion in the reactor, 110～125 ℃ temperature, behind the stirring dehydration 30min, form the B component;
4. mix spraying: with A, B component respectively through separately the automatic gauge and the delivery pump of pressurization, in proportion and with certain pressure, deliver to the mixing chamber of reaction injection machine, after mixing, braking mouth ejection by flush coater, material is sprayed on the band embryo of firm high temperature plasticizing typing, fast curing-formed is the polyurethane covering glue layer.
2. the manufacture method of polyethane conveyer belt according to claim 1, it is characterized in that: said polyurethane rubber cover constituent content is:
Polymer polyatomic alcohol: 100 parts of PEPA CMA-24EG
30～35 parts of vulcabond: MD2-100
Liquid chain extender: 10～14 parts of 1,4 butanediols
Additive: wherein catalyst C-102 is 0.05～0.15 part.
3. the manufacture method of polyethane conveyer belt according to claim 1 is characterized in that: add fire retardant, antistatic additive in said PVC thickener; Increase fire retardant, antistatic additive in the additive of said B component, polyurethane rubber cover constituent content is:
Polymer polyatomic alcohol: 100 parts of PEPA CMA-24EG
30～35 parts of vulcabond: MD2-100
Liquid chain extender: 10～14 parts of 1,4 butanediols
Additive:
4. the manufacture method of polyethane conveyer belt according to claim 1, it is characterized in that: said polymer polyatomic alcohol is a polyether polyol.
5. the manufacture method of polyethane conveyer belt according to claim 1 is characterized in that: said belt carcass is for directly through the braiding belt carcass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02135740 CN1238179C (en) | 2002-10-28 | 2002-10-28 | Manufacturing method of polyurethane conveying belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02135740 CN1238179C (en) | 2002-10-28 | 2002-10-28 | Manufacturing method of polyurethane conveying belt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1493452A CN1493452A (en) | 2004-05-05 |
| CN1238179C true CN1238179C (en) | 2006-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 02135740 Expired - Fee Related CN1238179C (en) | 2002-10-28 | 2002-10-28 | Manufacturing method of polyurethane conveying belt |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101070370B (en) * | 2007-05-25 | 2010-04-14 | 张勇 | Process for polyurethane crosslinking agent for melting spandex fiber |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1313530C (en) * | 2005-03-07 | 2007-05-02 | 上海永利带业制造有限公司 | Conveyer belt materials with high frictional property |
| CN102673942B (en) * | 2012-05-11 | 2015-06-03 | 甘肃西隆橡胶有限公司 | Production method of whole-core flame retardant conveyor belt |
| CN103072784B (en) * | 2012-09-19 | 2015-02-04 | 袁民军 | Joint-less polyurethane conveyor belt |
| CN102935927B (en) * | 2012-11-02 | 2016-01-20 | 齐建国 | A kind of method manufacturing lamination type fabric core conveyer belt |
| CN103466254B (en) * | 2013-09-22 | 2016-04-27 | 上海永利带业股份有限公司 | Flowers mechanized production system load-transfer device and manufacture method thereof |
| CN106738993A (en) * | 2016-12-16 | 2017-05-31 | 上海永利输送系统有限公司 | A kind of heatproof light-type conveyer belt and preparation method thereof |
| CN108035040A (en) * | 2017-12-25 | 2018-05-15 | 芜湖华烨新材料有限公司 | A kind of its preparation method of heat resistant type dipping canvas |
| CN112111978B (en) * | 2020-09-08 | 2021-10-08 | 浙江中天能橡胶股份有限公司 | Smearing machine for manufacturing method of wear-resistant durable conveying belt |
| CN113334658A (en) * | 2021-06-03 | 2021-09-03 | 焦作市德邦科技有限公司 | Production process of ceramic bead wear-resistant conveying belt |
| CN113637315A (en) * | 2021-07-27 | 2021-11-12 | 上海永利输送系统有限公司 | Middle tooth type wireless core conveyor belt |
| CN114149561A (en) * | 2021-12-23 | 2022-03-08 | 无锡百年通工业输送有限公司 | Cast polyurethane fabric core conveyer belt and preparation method thereof |
-
2002
- 2002-10-28 CN CN 02135740 patent/CN1238179C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101070370B (en) * | 2007-05-25 | 2010-04-14 | 张勇 | Process for polyurethane crosslinking agent for melting spandex fiber |
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| CN1493452A (en) | 2004-05-05 |
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Granted publication date: 20060125 Termination date: 20121028 |