CN101736596A - Method for manufacturing environmentally-friendly polyurethane elastomer conveying belt and aqueous adhesive therein - Google Patents
Method for manufacturing environmentally-friendly polyurethane elastomer conveying belt and aqueous adhesive therein Download PDFInfo
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- CN101736596A CN101736596A CN200910201593A CN200910201593A CN101736596A CN 101736596 A CN101736596 A CN 101736596A CN 200910201593 A CN200910201593 A CN 200910201593A CN 200910201593 A CN200910201593 A CN 200910201593A CN 101736596 A CN101736596 A CN 101736596A
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Abstract
The invention relates to a method for manufacturing an environmentally-friendly polyurethane elastomer conveying belt and an aqueous adhesive therein. The method adopts a coating process, and comprises the following steps: heating and drying a polyester fabric core through a production line oven, and tentering the setting fabric; base-coating the aqueous adhesive to the setting fabric by a coating cutter of a coating machine, and drying the setting fabric in the oven; coating a surface layer by the coating cutter of the coating machine, and heating and melting the fabric in the oven; and feeding the conveying belt coated with the surface layer to the oven again for heating and finishing so as to form a finished product. The aqueous adhesive comprises the following components in part by weight: 100 parts of aqueous polyurethane, 1 to 5 parts of thickening agent, 0 to 2 parts of antifoaming agent and 1 to 10 parts of crosslinking agent, wherein the aqueous polyurethane is synthesized by polyester polyol and polyisocyanate. The method has the advantages that an organic adhesive solvent is replaced by the aqueous adhesive, so the polyurethane conveying belt is safe and sanitary, has no peculiar smell, meets the standard requirement and related regulations of organic volatile substances, and has good peeling strength for polyester fabrics and polyurethane elastomer, small flexure fatigue damage and long service life.
Description
Technical field
The present invention relates to a kind of manufacture method of environmentally-friendly polyurethane elastomer conveying belt, also relate to and make aqueous adhesive used in this conveyer belt and preparation method thereof.
Background technology
Conveyer belt desired strength height, the flexibility used in light industry are good, wear-resisting, tear-resistant, and coefficient of friction is enough big, and service life is long as far as possible.Because polyurethane elastomer has high-wearing feature and great friction coefficient, and is celebrated with " abrasive rubber ", so polyurethane elastomer is one of the most suitable material.Polyurethane elastomer conveying belt not only has characteristics such as duck conveyor belt tensile strength height, circumnutating property are good, light, thin, tough, and oil resistant, and non-toxic sanitary cleans easily.Abroad, polyurethane elastomer conveying belt has been used for the production line of industries such as food, precision instrument, printing.
Polyurethane elastomer physical and mechanical property excellence can keep higher elasticity in very big hardness range; Except anti-wear performance, tearing strength can reach 2～10 times of natural rubber and the elastomer of other similar consistency and elasticities compares, and it has higher bearing load ability.With the conveyer belt that this material is made, its physical and mechanical property will be higher than the present rubber conveyer belt and the physical and mechanical property of PVC conveyer belt.
Meanwhile, adhesive is used in material-transporting system that conveyer belt is bonding is used widely.The adhesive that is used for polyurethane elastomer conveying belt is the solvent-type double-component polyurethane adhesive normally.Though its adhesive property can meet the demands,, it (NCO), in the applying glue operating process, human body is had great injury with hypertoxic free polyisocynate monomer because containing higher isocyanate groups.And, because inflammable, explosive, volatile, the smell of organic solvent is big, contaminated environment and have toxicity.Therefore, along with people to the wholesomeness of material and to the attention day by day of environmental protection, some developed countries have worked out the use that relevant laws and regulations limit solvent.
Undeniable, it is an inexorable trend that domestic adhesive market is developed to the environment-friendly type direction.European Union has has enacted and enforced the REACH rules and has been intended to protect human health and Environmental security; also there are similar environmental protection laws and regulations in other developed country of the world and area; so China's conveyer belt industry will be paid close attention to relevant information in the selection and the application facet of material and auxiliary agent, avoids the International Technical Trade barrier to bring unnecessary loss to industry development.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of manufacture method of environmentally-friendly polyurethane elastomer conveying belt.
Another technical problem to be solved by this invention is to provide the aqueous adhesive in the above-mentioned manufacture method, makes the adhesive strength of conveyer belt fabric and polyurethane elastomer satisfy market demands.
A technical problem more to be solved by this invention is to provide the finger preparation method of above-mentioned aqueous adhesive.
The present invention solves the problems of the technologies described above the technical scheme of being taked: a kind of method for manufacturing environmentally-friendly polyurethane elastomer conveying belt, adopt coating processes, utilize oven heating to produce, its production procedure is in regular turn: fabric typing, primary coat aqueous adhesive, apply surface layer, have a shave with polyurethane powder, make finished product, specifically comprise the steps:
The first step: with the polyester textile core through production line oven heat drying, stentering forming fabric;
Second step: the typing fabric is coated with cutter primary coat aqueous adhesive through coating machine, advances oven for drying again;
The 3rd step: be coated with cutter through coating machine and apply surface layer, advance the baking oven for heating fusion again;
The 4th step: the conveyer belt behind the above-mentioned coating surface layer is entered baking oven for heating once more have a shave, make finished product.
On the basis of such scheme, the coating surface layer described in the 3rd step is for applying polyurethane powder.
At aqueous adhesive used in the above-mentioned preparation method, described aqueous adhesive comprises following component by weight:
Aqueous polyurethane 100
Thickener 1～5
Defoamer 0～2
Crosslinking agent 1～10, wherein,
Described aqueous polyurethane is the synthetic polyester-type aqueous polyurethane of the pure and mild polyisocyanates of polyester polyols, the CR-60N of the DesmodurDA of polyisocyanates such as Bayer company or Japanese DIC company.
In aqueous polyurethane 100 weight portions,
The thickener consumption can be 1,2,3,4 or 5 weight portions;
The defoamer consumption can be 0,0.5,1,1.5 or 2 weight portions;
Dosage of crosslinking agent can be 1,2,3,4,5,6,7,8,9 or 10 weight portions.
On the basis of such scheme, described thickener is the nonionic polyurethane compound.
On the basis of such scheme, described defoamer is silicone based defoamer, as homemade 201 methyl-silicone oils or external trade mark BYK-141.
On the basis of such scheme, described crosslinking agent is an epoxide, as bisphenol A epoxide resin.
On the such scheme basis, described aqueous adhesive prepares as follows: earlier the aqueous polyurethane in the aqueous adhesive component, thickener and defoamer are stirred, treat to go up coating machine and add crosslinking agent in preceding 2 hours and stir and get final product.
Beneficial effect of the present invention:
Adhesive substitutes organic solvent with water in the environmentally-friendly polyurethane elastomer conveying belt of the present invention, safety, health, free from extraneous odour, the relevant regulations that meets U.S. FDA standard-required and VOC (organic volatile), and employing cleaning procedure production, can reduce environmental pollution, reduce production safety hidden danger.Peel strength to polyester textile and polyurethane elastomer is good, and with polyethane conveyer belt of the present invention to deflect fatigue damage little, long service life.Such conveyer belt meets U.S. FDA food hygienic standard and the REACH of European Union rules fully, has that ABRASION RESISTANCE is good, the characteristic of anti-physically aged, is a kind of long-lived conveying products.
Description of drawings
Fig. 1 is an environmentally-friendly polyurethane elastomer conveying belt flow sheet of the present invention.
The specific embodiment
Further specify the present invention below in conjunction with specific embodiment.
Embodiment 1
Earlier 100g aqueous polyurethane, 2g thickener and 0.5g defoamer in the aqueous adhesive component are stirred, treat to go up coating machine and add the 1g crosslinking agent in preceding 2 hours and stir, make the aqueous adhesive component.
See also shown in Figure 1ly, method for manufacturing environmentally-friendly polyurethane elastomer conveying belt of the present invention adopts coating processes, utilizes oven heating to produce, and production procedure comprises the steps: in regular turn
The first step: with the polyester textile core through production line oven heat drying, stentering forming fabric;
Second step: the typing fabric is coated with cutter primary coat aqueous adhesive through coating machine, advances oven for drying again;
The 3rd step: be coated with cutter through coating machine and apply surface layer (polyurethane powder), advance the baking oven for heating fusion again;
The 4th step: the conveyer belt behind the above-mentioned coating surface layer is entered baking oven for heating once more have a shave, make finished product.
Embodiment 2
Other prescriptions are identical with embodiment 1 with production procedure, are the consumption difference of crosslinking agent, and crosslinking agent is 2g.
Comparative example 1
Earlier with the polyester textile core through production line oven heat drying, stentering forming; Directly be coated with cutter then and apply surface layer (polyurethane powder), advance the baking oven for heating fusion through coating machine; Advancing baking oven for heating at last again has a shave and can make polyurethane elastomer conveying belt.
Comparative example 2
In the production earlier with the polyester textile core through production line oven heat drying, stentering forming; Be coated with the above-mentioned prepared solvent type of cutter primary coat adhesive through coating machine again, enter oven for drying; Apply surface layer (polyurethane powder) then, advance the baking oven for heating fusion; Advancing baking oven for heating at last again has a shave and can make polyurethane elastomer conveying belt.
Peel strength test:
The foregoing description 1,2 is that with the main distinction in the Comparative Examples 2 employed adhesive is different, and adhesive coating not in the comparative example 1.These 4 kinds of embodiment have been carried out pilot scale on the small-scale production line, and tested the peel strength between each product polyester textile and the coating surface layer, contrast sees Table 1.
Table 1
By the result of the test of table 1 as can be known, use the polyurethane elastomer conveying belt polyester textile of adhesive and peel strength between the coating surface layer all to be better than the conveyer belt that does not add adhesive.In addition, though use solvent-type double-component polyurethane adhesive peel strength to meet the demands, the organic solvent of volatilization has certain harm to human body, also can cause certain pollution to environment.And adopt aqueous adhesive can reach effect same, and safety, health.Such conveyer belt meets U.S. FDA food hygienic standard and the REACH of European Union rules fully.
Claims (7)
1. method for manufacturing environmentally-friendly polyurethane elastomer conveying belt is characterized in that: adopt coating processes, utilize oven heating to produce, its production procedure comprises the steps: in regular turn
The first step: with the polyester textile core through production line oven heat drying, stentering forming fabric;
Second step: the typing fabric is coated with cutter primary coat aqueous adhesive through coating machine, advances oven for drying again;
The 3rd step: be coated with cutter through coating machine and apply surface layer, advance the baking oven for heating fusion again;
The 4th step: the conveyer belt behind the above-mentioned coating surface layer is entered baking oven for heating once more have a shave, make finished product.
2. method for manufacturing environmentally-friendly polyurethane elastomer conveying belt according to claim 1 is characterized in that: the coating surface layer described in the 3rd step is for applying polyurethane powder.
3. at used aqueous adhesive in claim 1 or the 2 described preparation methods, it is characterized in that: described aqueous adhesive comprises following component by weight:
Aqueous polyurethane 100
Thickener 1～5
Defoamer 0～2
Crosslinking agent 1～10, wherein,
Described aqueous polyurethane is the synthetic polyester-type aqueous polyurethane of the pure and mild polyisocyanates of polyester polyols.
4. aqueous adhesive according to claim 3 is characterized in that: described thickener is the nonionic polyurethane compound.
5. aqueous adhesive according to claim 3 is characterized in that: described defoamer is silicone based defoamer.
6. aqueous adhesive according to claim 3 is characterized in that: described crosslinking agent is an epoxide.
7. at the preparation method of the described aqueous adhesive of one of claim 3 to 6, it is characterized in that preparing as follows in regular turn: earlier the aqueous polyurethane in the aqueous adhesive component, thickener and defoamer are stirred, treat to go up and add crosslinking agent in preceding 2 hours of the coating machine and stir again, make aqueous adhesive.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870857A (en) * | 2010-06-24 | 2010-10-27 | 同济大学 | Emulsion-type water-based polyurethane adhesive for polyurethane conveyor belt and its synthesis method |
| CN102173335A (en) * | 2011-04-02 | 2011-09-07 | 上海永利带业股份有限公司 | Manufacturing method for environment-friendly antiseptic polyvinyl chloride light-type conveyer belt and antiseptic coating material |
| CN102424236A (en) * | 2011-07-28 | 2012-04-25 | 上海永利带业股份有限公司 | Seamless wrapper belt and method of making same |
| CN102424233A (en) * | 2011-07-28 | 2012-04-25 | 上海永利带业股份有限公司 | Burr-proof thermoplastic polyurethane elastic body conveying belt for food industry and manufacture method thereof |
| CN103072784A (en) * | 2012-09-19 | 2013-05-01 | 袁民军 | Joint-less polyurethane conveyor belt |
| CN103466254A (en) * | 2013-09-22 | 2013-12-25 | 上海永利带业股份有限公司 | Conveyor belt for flowering plant automatic production system and manufacturing method of conveyor belt |
| CN103771185A (en) * | 2014-02-25 | 2014-05-07 | 北京东奥工贸有限公司 | Folding machine composite conveyor belt for improving friction and preparation method thereof |
| CN106217705A (en) * | 2016-07-22 | 2016-12-14 | 东华大学 | A kind of accurate woven seamless base flat rubber belting and preparation method thereof |
| CN106346671A (en) * | 2016-09-13 | 2017-01-25 | 南京东润带业有限公司 | Manufacturing method of polyurethane conductive conveying belt |
| CN106609469A (en) * | 2016-12-01 | 2017-05-03 | 上海永利带业股份有限公司 | High-strength and high-wear-resistance light conveying belt for logistics industry and manufacturing method thereof |
| CN112030572A (en) * | 2020-08-26 | 2020-12-04 | 南京东润带业有限公司 | Special airport environment-friendly flame-retardant logistics belt and preparation method thereof |
| CN112111978A (en) * | 2020-09-08 | 2020-12-22 | 浙江圣雅达橡胶有限公司 | Manufacturing method of wear-resistant durable conveying belt |
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2009
- 2009-12-22 CN CN200910201593A patent/CN101736596A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870857B (en) * | 2010-06-24 | 2012-08-22 | 同济大学 | Emulsion type water-base polyurethane adhesive for polyurethane conveying belt and synthetic method thereof |
| CN101870857A (en) * | 2010-06-24 | 2010-10-27 | 同济大学 | Emulsion-type water-based polyurethane adhesive for polyurethane conveyor belt and its synthesis method |
| CN102173335A (en) * | 2011-04-02 | 2011-09-07 | 上海永利带业股份有限公司 | Manufacturing method for environment-friendly antiseptic polyvinyl chloride light-type conveyer belt and antiseptic coating material |
| CN102424233B (en) * | 2011-07-28 | 2016-05-11 | 上海永利带业股份有限公司 | Anti-burr thermoplastic polyurethane elastic body conveying belt and manufacture method for food service industry |
| CN102424236A (en) * | 2011-07-28 | 2012-04-25 | 上海永利带业股份有限公司 | Seamless wrapper belt and method of making same |
| CN102424233A (en) * | 2011-07-28 | 2012-04-25 | 上海永利带业股份有限公司 | Burr-proof thermoplastic polyurethane elastic body conveying belt for food industry and manufacture method thereof |
| CN102424236B (en) * | 2011-07-28 | 2016-06-08 | 上海永利带业股份有限公司 | Seamless Wrapper belt and manufacture method thereof |
| CN103072784A (en) * | 2012-09-19 | 2013-05-01 | 袁民军 | Joint-less polyurethane conveyor 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 |
| CN103466254A (en) * | 2013-09-22 | 2013-12-25 | 上海永利带业股份有限公司 | Conveyor belt for flowering plant automatic production system and manufacturing method of conveyor belt |
| CN103771185A (en) * | 2014-02-25 | 2014-05-07 | 北京东奥工贸有限公司 | Folding machine composite conveyor belt for improving friction and preparation method thereof |
| CN103771185B (en) * | 2014-02-25 | 2017-06-13 | 北京东奥工贸有限公司 | A kind of folding machine composite conveyer belt for improving frictional force and preparation method thereof |
| CN106217705A (en) * | 2016-07-22 | 2016-12-14 | 东华大学 | A kind of accurate woven seamless base flat rubber belting and preparation method thereof |
| CN106217705B (en) * | 2016-07-22 | 2019-01-11 | 东华大学 | A kind of precision woven seamless base flat rubber belting and preparation method thereof |
| CN106346671A (en) * | 2016-09-13 | 2017-01-25 | 南京东润带业有限公司 | Manufacturing method of polyurethane conductive conveying belt |
| CN106609469A (en) * | 2016-12-01 | 2017-05-03 | 上海永利带业股份有限公司 | High-strength and high-wear-resistance light conveying belt for logistics industry and manufacturing method thereof |
| CN106609469B (en) * | 2016-12-01 | 2019-03-12 | 上海永利带业股份有限公司 | A kind of logistic industry high-strength, high-anti-friction light-type conveyer belt and its manufacturing method |
| CN112030572A (en) * | 2020-08-26 | 2020-12-04 | 南京东润带业有限公司 | Special airport environment-friendly flame-retardant logistics belt and preparation method thereof |
| CN112111978A (en) * | 2020-09-08 | 2020-12-22 | 浙江圣雅达橡胶有限公司 | Manufacturing method of wear-resistant durable conveying belt |
| 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 |
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Application publication date: 20100616 |