CN103790014A - Dipping solution for high-temperature-resistant conveyor belt and preparation method of dipping solution - Google Patents
Dipping solution for high-temperature-resistant conveyor belt and preparation method of dipping solution Download PDFInfo
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- CN103790014A CN103790014A CN201410000624.3A CN201410000624A CN103790014A CN 103790014 A CN103790014 A CN 103790014A CN 201410000624 A CN201410000624 A CN 201410000624A CN 103790014 A CN103790014 A CN 103790014A
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- dipping solution
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Abstract
The invention aims at providing a dipping solution for a high-temperature-resistance conveyor belt and a preparation method of the dipping solution. In the dipping formulation, chlorosulfonated polyethylene latex is taken as a main body, isocyanate with the weight ratio of 30-50% is replaced by an adhesive, and sodium carbonate is used for providing an alkaline environment. After a dipping system is improved, the thermal bonding force between a framework layer and a rubber layer is improved, the high temperature resistance of a bonding layer of the conveyor belt is improved, the bonding force of a dipping layer is improved, and the service life of the conveyor belt is prolonged. The adhesive is used for replacing part of the isocyanate, and the sodium carbonate is used for replacing ammonia water and providing the alkaline environment, so that the production cost is lowered under the premise the bonding force of the dipping layer is improved.
Description
Technical field
The technical field that the present invention relates to chemical fibre synthetic fabrics dipping sizing material, is specifically related to dipping solution of a kind of high temperature-resistance conveyor belt and preparation method thereof.
Background technology
High temperature-resistance conveyor belt, is again heat resistance conveyor belt, is a kind of extraordinary heavy-duty conveyor belt, mainly for delivery of the high-temperature material of the industries such as iron and steel, cement, coke.Current high temperature conveyer belt, the poor-performing of resistance to calcination of rubber shoe latex layer, carries in the flourishing process of high temperature, and heat can make the bonding strength between rubber shoe latex layer and casing play reduce, thereby causes rubber shoe latex layer bubble or peel off, come off, and service life is lower.
In polyester canvas impregnation production at present, comparative maturity is to adopt two-bath process, first bath adopts water-based latex, and the second bath is traditional resorcinol-formaldehyde-latex dipping liquid, and this kind of traditional dipping solution is under long-term high temperature action, easily be decomposed, thereby cause the damage inactivation of adhesive layer.
Therefore must improve existing impregnation system, improve the resistance to elevated temperatures of conveyer belt adhesive layer.
Summary of the invention
Technical problem to be solved by this invention is: provide dipping solution of a kind of high temperature-resistance conveyor belt and preparation method thereof, the poor deficiency of conveyer belt adhesive layer resistance to elevated temperatures existing to overcome prior art.
The object of this invention is to provide a kind of dipping solution formula of high temperature-resistance conveyor belt, described dipping solution formula comprises following content according to parts by weight:
1. the formula of RF liquid is:
Soft water 300-330,
NaOH 0.5-1.0,
Resorcinol 20-25,
Formaldehyde 30-40;
2. the formula of dipping solution is:
Soft water 100-130,
NaOH 0.5-1,
Chlorosulfonated polyethylene latex 450-500,
Sodium carbonate 25-30;
RF liquid 350.5-396,
Isocyanates 8-24,
Adhesive 8-12.
Further improvement of the present invention is: the weight ratio of described isocyanates and adhesive is 1-2:1, and described adhesive is contain-NCO of one group, and its chemical formula is C
19h
37nO.
Further improvement of the present invention is: the mass percentage concentration of described NaOH is 30%, the mass percentage concentration of formaldehyde is 45%, the mass percentage concentration of chlorosulfonated polyethylene latex is 40%, and the mass percentage concentration of isocyanates is 50%, and the mass percentage concentration of adhesive is 47%.
High temperature-resistance conveyor belt dipping solution preparation method's of the present invention technical scheme is: the preparation method of RF liquid is as follows: the first, in reaction cylinder, add soft water, and water temperature is controlled at below 23 ℃; The second, in reaction cylinder, add NaOH, stir 5 minutes; The 3rd, in reaction cylinder, add resorcinol, stir 20 minutes; The 4th, after resorcinol all dissolves, in reaction cylinder, add formaldehyde, then continuous stirring at least 5 hours, and temperature is controlled at below 28 ℃; The preparation method of dipping solution is as follows: the first, in reaction cylinder, add soft water; The second, in reaction cylinder, add NaOH, and mix and blend 5 minutes; The 3rd, in reaction cylinder, add chlorosulfonated polyethylene latex; The 4th, in reaction cylinder, add sodium carbonate, and mix and blend 8 minutes; The 5th, in reaction cylinder, add RF liquid; The 6th, in reaction cylinder, add isocyanates and adhesive, continuous stirring 30 minutes.
Beneficial effect of the present invention: adopt the chlorosulfonated polyethylene latex with good heat resistance energy and weather resisteant energy as main body, having strengthened the hot sticky of casing play and rubber layer makes a concerted effort, improve the resistance to elevated temperatures of conveyer belt adhesive layer, improve the bonding force of rubber shoe latex layer, extended the service life of conveyer belt.By replacing 30% ~ 50% blocked isocyanate with adhesive, and provide alkaline environment with sodium carbonate, strengthening under the prerequisite of rubber shoe latex layer bonding force, reduce production costs; And apply this dipping solution and can adopt single bath process impregnation, make the technological process of production short, feed intake less, not only greatly reduce and saved cost, improved efficiency, also reduced energy resource consumption and the disposal of pollutants in production process.
The specific embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment, the invention will be further described, and this embodiment only, for explaining the present invention, does not form limiting the scope of the present invention.
Embodiment 1
A dipping solution for high temperature-resistance conveyor belt, described dipping solution formula comprises following content according to parts by weight:
1. the formula of RF liquid is:
Soft water 316,
NaOH 0.7,
Resorcinol 21.2,
Formaldehyde 34;
2. the formula of dipping solution is:
Soft water 111,
NaOH 0.8,
Chlorosulfonated polyethylene latex 468,
Sodium carbonate 27;
RF liquid 371.9,
Isocyanates 18,
Adhesive 10.
The weight ratio of described isocyanates and adhesive is 1.8:1.Described adhesive is contain-NCO of one group, and its chemical formula is C
19h
37nO.The mass percentage concentration of described NaOH is 30%, and the mass percentage concentration of formaldehyde is 45%, and the mass percentage concentration of chlorosulfonated polyethylene latex is 40%, and the mass percentage concentration of isocyanates is 50%, and the mass percentage concentration of adhesive is 47%.
Preparation method and the step of high temperature-resistance conveyor belt dipping solution are as follows: the preparation method of RF liquid is as follows: the first, in reaction cylinder, add soft water, and water temperature is controlled at 22 ℃ ± 1 ℃; The second, in reaction cylinder, add NaOH, stir 5 minutes; The 3rd, in reaction cylinder, add resorcinol, stir 20 minutes; The 4th, after resorcinol all dissolves, in reaction cylinder, add formaldehyde, then continuous stirring 5 hours, and temperature is controlled at 23 ℃ ± 4 ℃; The preparation method of dipping solution is as follows: the first, in reaction cylinder, add soft water; The second, in reaction cylinder, add NaOH, and mix and blend 5 minutes; The 3rd, in reaction cylinder, add chlorosulfonated polyethylene latex; The 4th, in reaction cylinder, add sodium carbonate, and mix and blend 8 minutes; The 5th, in reaction cylinder, add RF liquid; The 6th, in reaction cylinder, add isocyanates and adhesive, continuous stirring 30 minutes.
Embodiment 2
A dipping solution for high temperature-resistance conveyor belt, described dipping solution formula comprises following content according to parts by weight:
1. the formula of RF liquid is:
Soft water 300,
NaOH 0.5,
Resorcinol 20,
Formaldehyde 30;
2. the formula of dipping solution is:
Soft water 100,
NaOH 0.5,
Chlorosulfonated polyethylene latex 450,
Sodium carbonate 25;
RF liquid 350.5,
Isocyanates 8,
Adhesive 8.
The weight ratio of described isocyanates and adhesive is 1:1.Described adhesive is contain-NCO of one group, and its chemical formula is C
19h
37nO.The mass percentage concentration of described NaOH is 30%, and the mass percentage concentration of formaldehyde is 45%, and the mass percentage concentration of chlorosulfonated polyethylene latex is 40%, and the mass percentage concentration of isocyanates is 50%, and the mass percentage concentration of adhesive is 47%.
The preparation method of high temperature-resistance conveyor belt dipping solution and step are identical with embodiment 1.
Embodiment 3
A dipping solution for high temperature-resistance conveyor belt, described dipping solution formula comprises following content according to parts by weight:
1. the formula of RF liquid is:
Soft water 330,
NaOH 1.0,
Resorcinol 25,
Formaldehyde 40;
2. the formula of dipping solution is:
Soft water 130,
NaOH 1,
Chlorosulfonated polyethylene latex 500,
Sodium carbonate 30;
RF liquid 396,
Isocyanates 24,
Adhesive 12.
The weight ratio of described isocyanates and adhesive is 2:1.Described adhesive is contain-NCO of one group, and its chemical formula is C
19h
37nO.The mass percentage concentration of described NaOH is 30%, and the mass percentage concentration of formaldehyde is 45%, and the mass percentage concentration of chlorosulfonated polyethylene latex is 40%, and the mass percentage concentration of isocyanates is 50%, and the mass percentage concentration of adhesive is 47%.
The preparation method of high temperature-resistance conveyor belt dipping solution and step are identical with embodiment 1.
In impregnation system after the improvement that above embodiment provides, RF liquid adopts traditional resorcinol-formaldehyde+NaOH system, dipping solution adopts chlorosulfonated polyethylene (being called for short CSM) latex, it has saturated main chain and side group completely, due to this structure, the vulcanizate of CSM has fabulous heat resistance and weather resistance.By substituting 30% ~ 50% isocyanates with the lower adhesive of price, when improving adhesive layer bonding force, save cost.By adopting sodium carbonate to replace ammoniacal liquor, the environment of basic solvent is conducive to reacting of adhesive-NCO group and terylene surface-OH, make the polyester canvas surface webbed resinous coat of shape and the polarity of terylene is strengthened by this reaction, increase reacting of terylene and dipping system, strengthened the bonding force of rubber shoe latex layer.And sodium carbonate, compared with ammoniacal liquor low price, can not cause because of the volatilization of ammoniacal liquor the loss of fiber strength, and reduce the harm to workshop condition yet when production.And apply this dipping solution and can adopt single bath process impregnation, make the technological process of production short, feed intake less, not only greatly reduce and saved cost, improved production efficiency, also reduced energy resource consumption and the disposal of pollutants in production process.
Claims (4)
1. a dipping solution for high temperature-resistance conveyor belt, is characterized in that: described dipping solution formula comprises following content according to parts by weight:
The formula of resorcinol formaldehyde resin liquid (being called for short RF liquid) is:
Soft water 300-330,
NaOH 0.5-1.0,
Resorcinol 20-25,
Formaldehyde 30-40;
The formula of dipping solution is:
Soft water 100-130,
NaOH 0.5-1,
Chlorosulfonated polyethylene latex 450-500,
Sodium carbonate 25-30;
RF liquid 350.5-396,
Isocyanates 8-24,
Adhesive 8-12.
2. the dipping solution of high temperature-resistance conveyor belt as claimed in claim 1, is characterized in that: the weight ratio of described isocyanates and adhesive is 1-2:1, and described adhesive is contain-NCO of one group, and its chemical formula is C
19h
37nO.
3. the dipping solution of high temperature-resistance conveyor belt as claimed in claim 1 or 2, it is characterized in that: the mass percentage concentration of described NaOH is 30%, the mass percentage concentration of formaldehyde is 45%, the mass percentage concentration of chlorosulfonated polyethylene latex is 40%, the mass percentage concentration of isocyanates is 50%, and the mass percentage concentration of adhesive is 47%.
4. a preparation method for high temperature-resistance conveyor belt dipping solution as claimed in claim 1, is characterized in that: the preparation method of RF liquid is as follows: the first, in reaction cylinder, add soft water, and water temperature is controlled at below 23 ℃; The second, in reaction cylinder, add NaOH, stir 5 minutes; The 3rd, in reaction cylinder, add resorcinol, stir 20 minutes; The 4th, after resorcinol all dissolves, in reaction cylinder, add formaldehyde, then continuous stirring at least 5 hours, and temperature is controlled at below 28 ℃;
The preparation method of dipping solution is as follows: the first, in reaction cylinder, add soft water; The second, in reaction cylinder, add NaOH, and mix and blend 5 minutes; The 3rd, in reaction cylinder, add chlorosulfonated polyethylene latex; The 4th, in reaction cylinder, add sodium carbonate, and mix and blend 8 minutes; The 5th, in reaction cylinder, add RF liquid; The 6th, in reaction cylinder, add isocyanates and adhesive, continuous stirring 30 minutes.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104233823A (en) * | 2014-09-20 | 2014-12-24 | 安徽工程大学 | Dipping solution for high-temperature-resistant industrial canvas and preparation method of dipping solution |
| CN109056330A (en) * | 2018-07-30 | 2018-12-21 | 江苏百利达股份有限公司 | A kind of high fluidity RF liquid and preparation method thereof |
| CN110952307A (en) * | 2019-10-23 | 2020-04-03 | 芜湖华烨新材料有限公司 | Graphene modified impregnation liquid and preparation method thereof |
| CN114293381A (en) * | 2022-01-07 | 2022-04-08 | 嘉兴博蕾新材料有限公司 | Tire skeleton cord fabric rubber dipping process |
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| CN1824684A (en) * | 2006-02-10 | 2006-08-30 | 河海大学 | Phenol formaldehyde-rubber copolymerized emulsion and its preparation method |
| CN1948608A (en) * | 2006-10-23 | 2007-04-18 | 刘显宝 | Dacron glass fiber dipped canvas and its preparation method |
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| CN101289555A (en) * | 2008-05-29 | 2008-10-22 | 南京大学 | Resorcinol formaldehyde rubber latex modified by alkyl phenol and method for preparing same |
| CN102220699A (en) * | 2011-05-30 | 2011-10-19 | 浙江尤夫科技工业有限公司 | Impregnation formula, impregnation production method and impregnation technology for high temperature resistant conveyer belt |
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2014
- 2014-01-02 CN CN201410000624.3A patent/CN103790014B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1824684A (en) * | 2006-02-10 | 2006-08-30 | 河海大学 | Phenol formaldehyde-rubber copolymerized emulsion and its preparation method |
| CN1948608A (en) * | 2006-10-23 | 2007-04-18 | 刘显宝 | Dacron glass fiber dipped canvas and its preparation method |
| CN101269369A (en) * | 2008-04-25 | 2008-09-24 | 黎绍明 | Gelatinizing method for cord fabric and gelatinizing liquid |
| CN101289555A (en) * | 2008-05-29 | 2008-10-22 | 南京大学 | Resorcinol formaldehyde rubber latex modified by alkyl phenol and method for preparing same |
| CN102220699A (en) * | 2011-05-30 | 2011-10-19 | 浙江尤夫科技工业有限公司 | Impregnation formula, impregnation production method and impregnation technology for high temperature resistant conveyer belt |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104233823A (en) * | 2014-09-20 | 2014-12-24 | 安徽工程大学 | Dipping solution for high-temperature-resistant industrial canvas and preparation method of dipping solution |
| CN109056330A (en) * | 2018-07-30 | 2018-12-21 | 江苏百利达股份有限公司 | A kind of high fluidity RF liquid and preparation method thereof |
| CN110952307A (en) * | 2019-10-23 | 2020-04-03 | 芜湖华烨新材料有限公司 | Graphene modified impregnation liquid and preparation method thereof |
| CN114293381A (en) * | 2022-01-07 | 2022-04-08 | 嘉兴博蕾新材料有限公司 | Tire skeleton cord fabric rubber dipping process |
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Address after: 241008 Export Processing Zone No. 68 Jiuhuabei Road, Wuhu City, Anhui Province Patentee after: Anhui Huaye Special Materials Co., Ltd. Address before: 241008 Export Processing Zone No. 68 Jiuhuabei Road, Wuhu City, Anhui Province Patentee before: Wuhu S.H.Z Industrial Fabric Co., Ltd. |
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