CN105085849A - Modified resorcinol formaldehyde resin adhesion promoter and preparation method thereof - Google Patents
Modified resorcinol formaldehyde resin adhesion promoter and preparation method thereof Download PDFInfo
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- CN105085849A CN105085849A CN201510462756.2A CN201510462756A CN105085849A CN 105085849 A CN105085849 A CN 105085849A CN 201510462756 A CN201510462756 A CN 201510462756A CN 105085849 A CN105085849 A CN 105085849A
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Abstract
The invention discloses phenolic acid modified resorcinol formaldehyde resin adhesion promoter and a preparation method thereof. Resorcinol formaldehyde resin and acid catalyst are added to a reaction still and are stirred and heated to be molten into liquid, and modifier is slowly added dropwise; after a reaction is conducted in the reaction still for 1-2 hours, formalin continues to be slowly added dropwise, and a reaction is conducted for 0.5-1.5 hours; atmospheric distillation is conducted, and after water and other volatile substances are removed in a vacuumizing mode, the phenolic acid modified adhesion promoter is obtained. According to the modified adhesion promoter, while the process is improved, a stereoscopic cross-linked network structure is enhanced through a plurality of functional groups of phenolic acids, the content of free resorcinol is reduced, and the strength, bonding performance and ageing resisting performance of resin are improved. According to the preparation method, production efficiency is improved, and environment friendliness, energy saving, emission reduction and green production are achieved.
Description
Technical field
The present invention relates to rubber industry field, be specifically related to a kind of preparation method and application thereof of resorcinol formaldehyde resin adhesion promotor of phenolic acid modification, the application particularly in rubber combination.
Background technology
Generally use polyester, steel wire etc. as skeleton strongthener in tyre industry, for increasing the intensity of rubber item.But owing to there is huge nature difference between rubber and steel wire, the final performance of combination between the two to material has tremendous influence.Rubber and steel wire cord form good mechanical engagement in sulfidation can obtain excellent initial viscosity, but due to aging and use that is rubber item, bond properties often can weaken or completely dissolve, and causes bonding premature failure.In order to avoid this situation, usually add adhesion promotor to maintain rubber or rubber combination with the excellent adhesion between metal.
Promotion bonding between rubber and steel wire cord, traditional method adopts two-pack binding system, joins among rubber, during vulcanisation step by methylene radical donor and methylene receptor simultaneously, both react formation cross-linked network, improve the physicals of rubber, mechanical property; Simultaneously and generation effect between rubber and steel wire, the interaction between rubber and steel wire is improved and bonding force both finally improving.
As methylene receptor, must have higher reactive behavior, the methylene radical that could discharge with methylene radical donor rapidly reacts, and forms cross-linked network in rubbery parent substance, thus the bonding force between raising rubber and steel wire.It is multiple that methylene receptor common at present comprises Resorcinol, resorcin phenolic resin, meta-cresol resol, phenol formaldehyde resin, alkylphenol-resorcinol formaldehyde resin etc.Wherein the reactive behavior of Resorcinol and methylene radical donor is the highest, uses Resorcinol to have unusual effect as jointing material for the bonding force improved between rubber and steel wire.Resorcinol formaldehyde resin is the industrial conventional steel wire cord of rubber tyre and the tackiness agent between polyester cord and rubber.
But Resorcinol is a kind of small molecules of easy distillation, its volatility of unreacted free Resorcinol in resorcinol formaldehyde resin and smokiness very serious, under rubber processing conditions, bring harm easily to environment and human body, and also cause metering inaccurate because distilling, the performance of product is had a negative impact.
For this reason, develop the treatment process of many Resorcinols or resorcin phenolic resin, reduce free Resorcinol to reach, reduce the object of being in use fuming with loss of weight.
Such as, CN101220130A provides a kind of method that the aqueous solution of saliferous, Resorcinol, formaldehyde and the aliphatic ketone with 3 to 6 carbon atoms are carried out polyreaction, obtained resorcin/formaldehyde resin in the presence of acidic.The method decreases the content that dihydroxy-benzene is sowed discord in product middle reaches to a certain extent, but this series products also can produce smog in refining glue, damages healthy and contaminate environment, and product still exists water absorbability, be easy to the problem of luming.
A kind of steel cord compound adhensive for radial ply type and its Preparation Method that CN1858141 provides, Resorcinol is polymerized under basic catalyst effect with bisphenol A epoxide resin, obtain Resorcinol-bisphenol a resin, again under acidic catalyst effect, adopt melamine monomer modification, obtain trimeric cyanamide-Resorcinol-bisphenol A epoxide resin.But modification is the bisphenol A epoxide resin with having bis ether reactive group, and thus etherification reaction can form superpolymer, molecular weight crosses conference, and to cause gained resin to be difficult in rubbery system dispersed.For controlling the generation of high polymers, this reaction can not be carried out thoroughly, so also still have a certain amount of free Resorcinol, to be fuming and loss of weight problem still exists.
CN101235165A provides a kind of aralkyl Resorcinol-aldehydes compound resin of Metha Amino Phenon modification, add this resin and can improve the mechanical property of vulcanized rubber or rubber combination, the bond properties of aging and unaged rubber, improve the problem of being fuming simultaneously.But because it is two-step reaction, and often step reaction all needed with the longer time, and the shortcoming that therefore reaction time is long, energy consumption is high is unfavorable for suitability for industrialized production.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of resorcinol formaldehyde resin adhesion promotor of phenolic acid modification, provide its preparation method simultaneously.
The present invention is achieved through the following technical solutions:
A resorcinol formaldehyde resin adhesion promotor for phenolic acid modification, has following general structure:
Wherein x, y be more than or equal to 1 integer, m, n are the integers of 0-50.
Wherein R
1, R
2, R
3independently H, OH or OR separately
4, wherein R
4alkyl or the aromatic group of 1-12 carbon atom.
A preparation method for the resorcinol formaldehyde resin adhesion promotor of phenolic acid modification, comprises the following steps:
(1) be placed in by resorcinol formaldehyde resin resin and be equipped with in the reactor of mechanical stirrer, heat fused is liquid, then adds an acidic catalyst and mix;
(2) feed temperature in reactor is elevated to 110-150 DEG C, slowly drips properties-correcting agent, the mass ratio of resorcinol formaldehyde resin and properties-correcting agent is 100:0.1-50, time for adding 20-30 minute, continues stirring reaction 1-2 hour;
(3) slowly drip formalin under stirring, the mass ratio of resorcinol formaldehyde resin and formalin is 100:1-50, reaction 0.5-1.5 hour;
(4) add in alkaline matter and an acidic catalyst in above-mentioned mixed solution;
(5) air distillation, vacuumizes dehydration, devolatilization material, obtains resorcinol formaldehyde resin adhesion promotor.
Described properties-correcting agent is the phenolic acid compound containing double bond structure.
Concrete reaction process is as follows:
In preparation method,
The described phenolic acid compound containing double bond structure, preferably, at least containing the phenolic acid compound shown in formula (1),
(1) wherein R
1, R
2, R
3independently H, OH or OR separately
4, wherein R
4alkyl or the aromatic group of 1-12 carbon atom; N, m are the integers of 0-50, and preferred n, m are the integers of 0-20.
The described phenolic acid compound containing double bond structure comprise in coffic acid, forulic acid, vanillinated, sinapinic acid, chlorogenic acid one or more.
Described acid catalyst is one or more in tosic acid, Witco 1298 Soft Acid, acid dimethyl, Phenylsulfonic acid, hydrochloric acid, sulfuric acid, phosphoric acid.
Described alkaline matter is the aqueous solution of one or more in sodium hydroxide, potassium hydroxide, triethylamine, trolamine, amine acetate, and mass percent concentration is 10-20%.
Resorcinol-the application of aldehydes adhesion promotor in rubber of phenolic acid modification, the application especially in tire.
The present invention has the following advantages:
A kind of modification adhesion promotor provided by the invention, the most important thing is to use a kind of phenolic acid with reactive behavior to carry out modification to resorcinol formaldehyde resin, while improving technique, by multiple functional groups of phenolic acid, enhance stereo crosslinked network structure, reduce free Resorcinol content, improve the intensity of resin, bond properties and ageing-resistant performance, thus obtain the more excellent modification resorcinol formaldehyde resin of performance.
The production method of modification resorcinol formaldehyde resin provided by the invention improves production efficiency, and achieves environmental protection, energy-saving and emission-reduction green production.
Embodiment
Again foregoing of the present invention is described in further detail below by embodiment, but this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to following embodiment.
Embodiment 1
(1) be placed in by resorcinol formaldehyde resin 100g and be equipped with in the 500ml reactor of mechanical stirrer, thermometer, reflux exchanger and dropping funnel, heat fused is liquid; Add 0.2g tosic acid to mix;
(2) temperature of reaction kettle is elevated to 140 DEG C, and in above-mentioned mixed solution, drips forulic acid 2g, time for adding 20-30 minute, material in reactor continues reaction 1 hour, and constantly stirs;
(3) stir the formalin 3g that lower slowly dropping mass percent concentration is 37%, react 0.5 hour;
(4) in above-mentioned mixed solution, adding mass percent concentration is in the NaOH of 10% and an acidic catalyst, makes Ph be about 7;
(5) air distillation, vacuumizes dehydration, devolatilization material, is then poured out by the thick liquid in reactor, obtain resorcinol formaldehyde resin adhesion promotor.
Embodiment 2
(1) be placed in by resorcinol formaldehyde resin 100g and be equipped with in the 500ml reactor of mechanical stirrer, thermometer, reflux exchanger and dropping funnel, heat fused is liquid; Add 0.3g acid dimethyl to mix;
(2) temperature of reaction kettle is elevated to 140 DEG C, and in above-mentioned mixed solution, drips forulic acid 5g, time for adding 20-30 minute, continue reaction 1.5 hours in reactor, and constantly stir;
(3) stir the formalin 3g that lower slowly dropping mass percent concentration is 37%, react 0.5 hour;
(4) in above-mentioned mixed solution, adding mass percent concentration is in the NaOH of 10% and an acidic catalyst, makes Ph be about 7;
(5) air distillation, vacuumizes dehydration, devolatilization material, is then poured out by the thick liquid in reactor, obtain resorcinol formaldehyde resin adhesion promotor.
Embodiment 3
(1) be placed in by resorcinol formaldehyde resin 100g and be equipped with in the 500ml reactor of mechanical stirrer, thermometer, reflux exchanger and dropping funnel, heat fused is liquid; Add 0.5g mixed in hydrochloric acid even;
(2) temperature of reaction kettle is elevated to 140 DEG C, and in above-mentioned mixed solution, drips vanillinated 7g, time for adding 20-30 minute, continue reaction 2 hours in reactor, and constantly stir;
(3) stir the formalin 4g that lower slowly dropping mass percent concentration is 37%, react 0.5 hour;
(4) in above-mentioned mixed solution, adding mass percent concentration is in the NaOH of 10% and an acidic catalyst, makes Ph be about 7;
(5) air distillation, vacuumizes dehydration, other materials de-, is then poured out by the thick liquid in reactor, obtain resorcinol formaldehyde resin adhesion promotor.
The contrast experiment of embodiment 4 bond properties
According to standard GB/T3513-2001, carry out bond properties experiment.Formula with reference to lower list 1 carries out bond properties experiment, in order to check the bond properties of binder resin.Following formula is conventional truck bias tyre steel bead wire Rubbering formula.
Table 1 bond properties experimental formula
Note: A is phenol-formaldehyde resin (upper seawater emerging Industrial Co., Ltd. product)
B is unmodified resorcinol-formaldehyde resin (Tianjin Huan Qi International Trading Company Ltd product)
C is the resorcinol-formaldehyde resin (embodiment 1,2 or 3 product) of phenolic acid modification
Experimental result is in table 2.
Table 2 bond properties experimental result
Note: aging condition: 100 DEG C of * 48h
The content of the free Resorcinol in the unmodified resorcinol formaldehyde resin recorded by high performance liquid chromatography (HPLC) is 9.2%, and the resorcinol formaldehyde resin of phenol-formaldehyde resin and phenolic acid modification is not containing free Resorcinol.
As can be seen from above data, the bounding force of phenol-formaldehyde resin is significantly less than resorcinol formaldehyde resin, and aging after bounding force reduce obviously; And the resorcinol formaldehyde resin of phenolic acid modification has the bond properties suitable with resorcinol formaldehyde resin, and not containing free Resorcinol, more environmental protection.
For those skilled in the art, under the premise without departing from the principles of the invention, can also make the change of some selections about component and proportioning etc., these must be considered as protection scope of the present invention.
Claims (10)
1. a resorcinol formaldehyde resin adhesion promotor for phenolic acid modification, is characterized in that having following general structure:
Wherein x, y be more than or equal to 1 integer, m, n are the integers of 0-50;
Wherein R
1, R
2, R
3independently H, OH or OR separately
4, wherein R
4alkyl or the aromatic group of 1-12 carbon atom.
2. a preparation method for the resorcinol formaldehyde resin adhesion promotor of phenolic acid modification, is characterized in that comprising the following steps:
(1) be placed in by resorcinol formaldehyde resin and be equipped with in the reactor of mechanical stirrer, heat fused is liquid, then adds an acidic catalyst and mix;
(2) feed temperature in reactor is elevated to 110-150 DEG C, slowly drips properties-correcting agent, the mass ratio of resorcinol formaldehyde resin and properties-correcting agent is 100:0.1-50, time for adding 20-30 minute, continues stirring reaction 1-2 hour;
(3) slowly drip formalin under stirring, the mass ratio of resorcinol formaldehyde resin and formalin is 100:1-50, reaction 0.5-1.5 hour;
(4) add in alkaline matter and an acidic catalyst in above-mentioned mixed solution;
(5) air distillation, vacuumizes dehydration, devolatilization material, obtains resorcinol formaldehyde resin adhesion promotor;
Described properties-correcting agent is the phenolic acid compound containing double bond structure.
3. preparation method as claimed in claim 2, is characterized in that: the described phenolic acid compound containing double bond structure, at least containing the phenolic acid compound shown in formula (1),
(1) wherein R
1, R
2, R
3independently H, OH or OR separately
4, wherein R
4alkyl or the aromatic group of 1-12 carbon atom; N, m are the integers of 0-50.
4. preparation method as claimed in claim 3, is characterized in that: n, m are the integers of 0-20.
5. as claimed in claim 2 or claim 3 preparation method, is characterized in that: the described phenolic acid compound containing double bond structure is one or more in coffic acid, forulic acid, vanillinated, sinapinic acid, chlorogenic acid.
6. preparation method as claimed in claim 2, is characterized in that: described acid catalyst is organic acid or mineral acid, or the mixing of organic acid and mineral acid.
7. the preparation method as described in claim 2 or 6, is characterized in that: described acid catalyst is one or more in tosic acid, Witco 1298 Soft Acid, acid dimethyl, Phenylsulfonic acid, hydrochloric acid, sulfuric acid, phosphoric acid.
8. preparation method as claimed in claim 2, is characterized in that: described alkaline matter is organic bases or mineral alkali, or organic bases and mineral alkali mixing.
9. the preparation method as described in claim 2 or 8, is characterized in that: described alkaline matter is the aqueous solution of one or more in sodium hydroxide, potassium hydroxide, triethylamine, trolamine, amine acetate, and mass percent concentration is 10-20%.
10. the application of resorcinol formaldehyde resin adhesion promotor in rubber of a phenolic acid modification.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106700003A (en) * | 2016-12-23 | 2017-05-24 | 沈阳化工大学 | Benzylphosphonic acid copolymerized phenol formaldehyde foamed resin and preparation method thereof |
| CN109705410A (en) * | 2018-12-28 | 2019-05-03 | 江苏麒祥高新材料有限公司 | A kind of rubber composition and its preparation process for bead wire belt |
| CN114672074A (en) * | 2020-12-24 | 2022-06-28 | 彤程新材料集团股份有限公司 | Rubber composition containing xylene modified phenolic resin and application thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106700003A (en) * | 2016-12-23 | 2017-05-24 | 沈阳化工大学 | Benzylphosphonic acid copolymerized phenol formaldehyde foamed resin and preparation method thereof |
| CN109705410A (en) * | 2018-12-28 | 2019-05-03 | 江苏麒祥高新材料有限公司 | A kind of rubber composition and its preparation process for bead wire belt |
| CN114672074A (en) * | 2020-12-24 | 2022-06-28 | 彤程新材料集团股份有限公司 | Rubber composition containing xylene modified phenolic resin and application thereof |
| CN114672074B (en) * | 2020-12-24 | 2024-02-09 | 彤程新材料集团股份有限公司 | Rubber composition containing xylene modified phenolic resin and application thereof |
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| CN105085849B (en) | 2017-03-29 |
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Denomination of invention: The invention relates to a modified resorcinol formaldehyde resin adhesion promoter and a preparation method thereof Effective date of registration: 20211122 Granted publication date: 20170329 Pledgee: Suzhou Qixiang New Material Co.,Ltd. Pledgor: JIANGSU CHEESHINE PERFORMANCE MATERIALS Co.,Ltd. Registration number: Y2021980013060 |
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