CN103410004A - Formula of single-bath glue dipping liquid for improving fatigue resistance of cord thread - Google Patents
Formula of single-bath glue dipping liquid for improving fatigue resistance of cord thread Download PDFInfo
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- CN103410004A CN103410004A CN2013103480909A CN201310348090A CN103410004A CN 103410004 A CN103410004 A CN 103410004A CN 2013103480909 A CN2013103480909 A CN 2013103480909A CN 201310348090 A CN201310348090 A CN 201310348090A CN 103410004 A CN103410004 A CN 103410004A
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Abstract
The invention discloses a formula of single-bath glue dipping liquid for improving fatigue resistance of a cord thread. The formula is suitable for single-bath glue dipping of cord fabrics, wherein the content of RFL (resorcinol formaldehyde latex) is 11% to 12%, and the ratio of RF to L is 1 to (5.5-6); a mixed aqueous solution of epoxy resin and isocyanate is adopted as a single-bath general liquid; an aqueous solution prepared through condensation polymerization of resorcinol and formaldehyde, or an aqueous solution subjected to pre-condensation polymerization is adopted as RF resin; HVP, namely butadiene vinyl-pyridine rubber latex subjected to hydrogen treatment, with solid content of 20%, is adopted as L (latex). Compared with the prior art, the formula has the advantages that the softness of a glue dipped layer is improved, the modulus difference between the cord thread and the glue dipped layer is lowered, and the fatigue resistance of the glue dipped cord fabrics is improved.
Description
Technical field
The present invention relates to a kind of be used to improving the impregnation formula of cord fatigue performance.
Background technology
The HMLS polyester cord have powerful high, modulus is high, elongation strain is little, good stability of the dimension, dry-hot shrinkage and hysteresis loss little, the strength retention high, be widely used in the production of automobile radial tyre.But in traditional gum dipping process, the technical barrier that exists cord and rubber shoe latex layer modulus otherness to cause greatly fatigue performance to descend, make Using Life of Tyre short, and turnover rate is high.
Quick emergence along with China's car industry, the industry matched with auto industry also obtains swift and violent development, the trend pickup of China's automobile tire, at present be that the maximum tire in the whole world is manufactured country, but the high-end tire production capacity of China is little, the domestic car that some are high-end, tire are but imports.
Therefore, further improve the fatigue performance of radial tyre framework material HMLS polyester cord, extend Using Life of Tyre, become the important topic of industry research.
At present aspect the production of HMLS polyester cord, one bathes the mixed aqueous solution that impregnation generally adopts conventional resin+adhesive, because the elongation at break of rubber shoe latex layer is significantly less than cord fabric thread, under the Compression and Expansion effect of stress, cracking easily appears in rubber shoe latex layer, cause the rubber shoe latex layer fatigue performance to descend, occur peeling off in early days.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of be used to improving the impregnation formula of cord fatigue performance, and large to overcome in prior art between cord and rubber shoe latex layer the modulus otherness, the problem that causes fatigue performance to descend.
For solving described technical problem, the present invention by the following technical solutions:
In conventional one bathes dipping solution, added the RFL latex, RFL content is at 11%-12%, RF:L=1:5.5-6;
One bathes the mixed aqueous solution that conventional liquid adopts epoxy resin and isocyanates, and the RF resin adopts resorcinol and formaldehyde to carry out the aqueous solution of polycondensation reaction or the aqueous solution that the RF resin adopts precondensation;
L is HVP, i.e. butadiene-vinylpyridine copylymer latex after a kind of hydrogenation treatment, and solid content is 20%.
One weight portion of bathing dipping solution is filled a prescription as follows:
Conventional liquid weight
Soft water 800-820;
Epoxy resin 10-15;
Isocyanates 50% 55-70;
Conventional liquid 880-885;
Reaction time: 5 hrs, reaction temperature: 25 ℃
RFL latex 115-120;
One to bathe dipping solution be above sum, namely 1000.
The weight portion that the RF resin adopts resorcinol and formaldehyde to carry out the aqueous solution of polycondensation reaction is filled a prescription as follows:
The RF weight resin
Soft water 250-350;
NaOH 5% 5-8;
Resorcinol solid 14-15;
Formaldehyde 37% 20-23;
Reaction time: 6 hrs, reaction temperature: 24 C;
The RFL latex
HVP latex 20% 600 – 710;
RFL latex 1000.
Adopt the weight portion of the RF resin aqueous solution of precondensation to fill a prescription as follows:
The precondensation weight resin
Soft water 200;
NaOH 5% 5;
Precondensation resin 20;
Formaldehyde (37%) 10;
Precondensation resin solution 235;
Reaction time: 2-3 hrs, reaction temperature: 24 C;
The RFL latex
HVP latex 20% 765;
RFL latex 1000.
Gum dipping process is as follows:
Cement dipping machine adopts the cement dipping machine with 6 dry heat treatment ovens, and with soft device.
Cord fabric is through impregnation station impregnation, and impregnation compression roller pressure is 1800daN;
After impregnation, adopt vacuum to inhale glue and absorb remaining glue, vacuum is 25MPa;
Impregnation speed: 75 m/mins (producing 1000D/2*100CM*1450)
One bathes dipping: impregnation tension force: 1000daN, and compression roller pressure: 1800daN, vacuum is inhaled colloidality: 22MPa;
One bathes the deblocking temperature: 165 ℃, and tension force: 800daN;
One bathes baking temperature: 120 ℃, and tension force: 800daN;
One bathes heat treatment temperature: 240 ℃, and tension force: 1000daN;
Two bathe dipping: impregnation tension force: 1000daN, and compression roller pressure: 2400daN, vacuum is inhaled colloidality: 35MPa;
Two bathe predrying temperature: 120 ℃, and tension force: 800daN;
Two bathe baking temperature: 140 ℃, and tension force: 800daN;
Two bathe heat treatment temperature: 242 ℃, and tension force: 470daN;
Pliability: 55.
The present invention compared with prior art, adds the toughness that latex utilizes latex afterwards, has increased the elongation at break of rubber shoe latex layer, has reduced the modulus otherness, has improved the fatigue performance of cord.Improve the pliability of rubber shoe latex layer, improved the fatigue performance of HMLS polyester cord, be more suitable for the framework material of radial tyre.
The specific embodiment
Embodiments of the invention: dipping solution formula of the present invention and concocting method are described below:
Embodiment mono-:
(1) RF resin formula
Soft water 34.9;
NaOH 5% 0.9;
Resorcinol solid 1.6;
Formaldehyde 37% 2.3;
RF resin 39.7.
(2) RF resin allotment
A) in the retort, first put into a certain amount of soft water.Water temperature is controlled at 1 ℃ of 20 ℃ of +/-;
B) with a certain amount of soft water of a certain amount of dissolution of sodium hydroxide, be mixed with concentration and be about 5% the aqueous solution, render in retort, and be uniformly mixed 5 minutes.Mixing speed: 60 rev/mins;
C) by a certain amount of resorcinol dissolution of solid in soft water, be mixed with concentration 10%-20% solution;
D) resorcinol solution is rendered in retort.And stir more than 5 minutes mixing speed: 60 rev/mins;
E) a certain amount of formaldehyde and soft water are mixed, being mixed with concentration is 5-20%;
F) formalin is slowly added in retort, retort now must continue to stir, 60 rev/mins of mixing speeds;
G) retort is the jacket water (J.W.) insulation, and by the cooling water of temperature lower than 20 ℃, cooling retort, controlling reaction temperature is 2 ℃ of 25 ℃ of +/-;
H) reaction time is 6 hours.
(3) formula of RFL latex:
RF resin solution 39.7;
HVP latex 20% 77.0;
RFL latex 116.7.
(4) allotment of RFL latex:
In blend tank, by the formula regulation, put into HVP latex, then the RF resin of reaction end in retort is transplanted in blend tank, when being transplanted on retort, must continue to stir, transferring the RF resin solution must complete in 30 minutes.The handover mode of RF resin is similar to spray, accelerates mixing velocity and the uniformity of RF resin and latex solution.Blend tank adopts the water cooling jacket heat-preservation, and keeping the glue temperature in blend tank is between 15-20 ℃.In blend tank, from the RF resin is transferred, glue to be joined after slaking in 20 hours.
(5) one bathe the dipping solution formula:
Soft water 800.7;
Epoxy resin 13.1;
Isocyanates 69.5;
RFL latex 116.7;
One bathes dipping solution 1000.0.
(6) one bathe the allotment of dipping solution:
In blend tank, by the formula regulation, add soft water, then add epoxy resin, stir 1h, minute three allotments, continue to stir 1h after mixing; Isocyanates is slowly added in soft water, stir, then add in blend tank, continue to stir 0.5h, glue temperature is controlled at 22-25 ℃; Then the RFL latex is slowly added, stir 1h, filter stand-by.
Embodiment bis-:
(1) precondensation RF resin formula
Soft water 23.4;
NaOH 5% 4.4;
Precondensation RF resin 40% 1.9;
Formaldehyde 37% 16.7;
RF resin 30.2.
(2) precondensation RF resin allotment
A) in the retort, first put into a certain amount of soft water.Water temperature is controlled at 1 ℃ of 20 ℃ of +/-;
B) with a certain amount of soft water of a certain amount of dissolution of sodium hydroxide, be mixed with concentration and be about 5% the aqueous solution, render in retort, and be uniformly mixed 5 minutes.Mixing speed: 60 rev/mins;
C) a certain amount of precondensation RF resin solution is rendered in retort.And stir more than 5 minutes mixing speed: 60 rev/mins;
D) a certain amount of formaldehyde and soft water are mixed, being mixed with concentration is 5-20%;
E) formalin is slowly added in retort, retort now must continue to stir, 60 rev/mins of mixing speeds;
F) retort is the jacket water (J.W.) insulation, and by the cooling water of temperature lower than 20 ℃, cooling retort, controlling reaction temperature is 2 ℃ of 25 ℃ of +/-;
G) reaction time is 2 hours.
(3) formula of RFL latex:
RF resin solution 30.2;
HVP latex 20% 86.5;
RFL latex 116.7.
(4) allotment of RFL latex:
In blend tank, by the formula regulation, put into HVP latex, then the RF resin of reaction end in retort is transplanted in blend tank, when being transplanted on retort, must continue to stir, transferring the RF resin solution must complete in 30 minutes.The handover mode of RF resin is similar to spray, accelerates mixing velocity and the uniformity of RF resin and latex solution.Blend tank adopts the water cooling jacket heat-preservation, and keeping the glue temperature in blend tank is between 15-20 ℃.In blend tank, from the RF resin is transferred, after slaking in 6 hours, send cement dipping machine to use.
(5) one bathe the dipping solution formula:
Soft water 800.7;
Epoxy resin 13.1;
Isocyanates 69.5;
RFL latex 116.7;
One bathes dipping solution 1000.0.
(6) one bathe the allotment of dipping solution:
In blend tank, by the formula regulation, add soft water, then add epoxy resin, stir 1h, minute three allotments, continue to stir 1h after mixing; Isocyanates is slowly added in soft water, stir, then add in blend tank, continue to stir 0.5h, glue temperature is controlled at 22-25 ℃; Then the RFL latex is slowly added, stir 1h, filter stand-by.
Claims (7)
1. be used to improving one of cord fatigue performance, bathe the dipping solution formula for one kind, it is characterized in that one bathes the mixed aqueous solution that dipping solution adopts epoxy resin and isocyanates, in one bathes dipping solution, added RFL, RFL content is at 11%-12%, RF:L=1:5.5-6, RF resin adopt resorcinol and formaldehyde to carry out the aqueous solution of polycondensation reaction or the aqueous solution of precondensation; L is HVP, i.e. butadiene-vinylpyridine copylymer latex after a kind of hydrogenation treatment, and solid content is 20%.
2. according to claim 1 be used to improving the impregnation formula of cord fatigue performance, it is characterized in that: a weight portion of bathing dipping solution is filled a prescription as follows:
Soft water 800-820;
Epoxy resin 10-15;
Isocyanates 50% 55-70;
RFL latex 115-120;
One to bathe dipping solution be above sum, namely 1000.
3. according to claim 2 be used to improving the impregnation formula of cord fatigue performance, it is characterized in that: a weight portion of bathing dipping solution is filled a prescription as follows:
Soft water 800.7;
Epoxy resin 13.1;
Isocyanates 50% 69.5;
RFL latex 116.7;
One to bathe dipping solution be above sum, namely 1000.
4. according to claim 1 be used to improving the impregnation formula of cord fatigue performance, it is characterized in that: the weight portion that the RF resin adopts resorcinol and formaldehyde to carry out the aqueous solution of polycondensation reaction is filled a prescription as follows:
Soft water 250-350;
NaOH 5% 5-8;
Resorcinol solid 14-15;
Formaldehyde 37% 20-23;
HVP latex 20% 600 – 710;
The RFL latex is above sum, namely 1000.
5. according to claim 4 be used to improving the impregnation formula of cord fatigue performance, it is characterized in that: the weight portion that the RF resin adopts resorcinol and formaldehyde to carry out the aqueous solution of polycondensation reaction is filled a prescription as follows:
Soft water 300.0;
NaOH 5% 7.4;
Resorcinol solid 13.5;
Formaldehyde 37% 19.3;
HVP latex 20% 660.0;
The RFL latex is above sum, namely 1000.0.
6. according to claim 1 be used to improving the impregnation formula of cord fatigue performance, it is characterized in that: the RF resin adopts the weight portion of the aqueous solution of precondensation to fill a prescription as follows:
Soft water 200;
NaOH 5% 5;
Precondensation resin 20;
37% formaldehyde 10;
The precondensation resin solution is above all sum, namely 235;
HVP latex 20% 765;
The RFL latex is precondensation resin solution and HVP latex sum, namely 1000.
7. according to claim 6 be used to improving the impregnation formula of cord fatigue performance, it is characterized in that: the RF resin adopts the weight portion of the aqueous solution of precondensation to fill a prescription as follows:
Soft water 200.0;
NaOH 5% 4.2;
Precondensation RF resin 40% 37.5;
Formaldehyde 37% 16.7;
The precondensation resin solution is above all sum, namely 258.4;
HVP latex 20% 741.6;
The RFL latex is precondensation resin solution and HVP latex sum, namely 1000.0.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310348090.9A CN103410004B (en) | 2013-08-12 | 2013-08-12 | Formula of single-bath glue dipping liquid for improving fatigue resistance of cord thread |
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| CN201310348090.9A CN103410004B (en) | 2013-08-12 | 2013-08-12 | Formula of single-bath glue dipping liquid for improving fatigue resistance of cord thread |
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| CN103410004B CN103410004B (en) | 2015-05-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104611819A (en) * | 2015-02-13 | 2015-05-13 | 浙江尤夫科技工业有限公司 | Aramid rubber canvas fabric structure for high-strength conveyor belts and production process of aramid rubber canvas fabric structure |
| CN104894861A (en) * | 2015-06-09 | 2015-09-09 | 浙江尤夫高新纤维股份有限公司 | Impregnation formula for improving chromatic aberration of glue tube yarns and production method |
| CN106637989A (en) * | 2016-12-06 | 2017-05-10 | 钦州市高新技术产业服务中心 | Fiber fabric dipping solution and preparation method thereof |
| CN107700220A (en) * | 2017-10-18 | 2018-02-16 | 江苏太极实业新材料有限公司 | A kind of preparation method of fibre framework materials dipping solution |
| CN108004783A (en) * | 2017-12-14 | 2018-05-08 | 芜湖华烨新材料有限公司 | A kind of cord dipping liquid for improving fatigue performance |
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| EP1731657A1 (en) * | 2004-03-30 | 2006-12-13 | Nippon Sheet Glass Company, Limited | Composition for cord coating, cord for rubber reinforcement made with the same, and rubber product made with the same |
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2013
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Patent Citations (3)
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| EP1731657A1 (en) * | 2004-03-30 | 2006-12-13 | Nippon Sheet Glass Company, Limited | Composition for cord coating, cord for rubber reinforcement made with the same, and rubber product made with the same |
| CN1938475A (en) * | 2004-03-30 | 2007-03-28 | 日本板硝子株式会社 | Composition for cord coating, cord for rubber reinforcement made with the same, and rubber product made with the same |
| CN102199878A (en) * | 2011-04-12 | 2011-09-28 | 可隆（南京）特种纺织品有限公司 | Primary dip solution and dipping treatment method of polyester cord fabrics |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104611819A (en) * | 2015-02-13 | 2015-05-13 | 浙江尤夫科技工业有限公司 | Aramid rubber canvas fabric structure for high-strength conveyor belts and production process of aramid rubber canvas fabric structure |
| CN104894861A (en) * | 2015-06-09 | 2015-09-09 | 浙江尤夫高新纤维股份有限公司 | Impregnation formula for improving chromatic aberration of glue tube yarns and production method |
| CN106637989A (en) * | 2016-12-06 | 2017-05-10 | 钦州市高新技术产业服务中心 | Fiber fabric dipping solution and preparation method thereof |
| CN107700220A (en) * | 2017-10-18 | 2018-02-16 | 江苏太极实业新材料有限公司 | A kind of preparation method of fibre framework materials dipping solution |
| CN108004783A (en) * | 2017-12-14 | 2018-05-08 | 芜湖华烨新材料有限公司 | A kind of cord dipping liquid for improving fatigue performance |
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| CN103410004B (en) | 2015-05-20 |
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Inventor after: Mao Huixin Inventor after: Li Yong Inventor before: Mao Huixin |
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Denomination of invention: A One Bath Dipping Solution Preparation Method for Improving the Fatigue Resistance of Cords Effective date of registration: 20230702 Granted publication date: 20150520 Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Huzhou Linghu Small and Micro Enterprise Sub branch Pledgor: ZHEJIANG UNIFULL HIGH-TECHNOLOGY INDUSTRY CO.,LTD. Registration number: Y2023330001321 |
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