阅读说明：本技术 一种含eva复配型柴油降凝剂及其制备与应用 (One kind diesel pour inhibitor of Compositional type containing EVA and its preparation and application ) 是由 韩生 杨太顺 张方 陈凤飞 解麦莹 殷素雅 卢德力 蔺华林 薛原 于 2019-08-13 设计创作，主要内容包括：本发明涉及一种含EVA复配型柴油降凝剂及其制备与应用,含EVA复配型柴油降凝剂包括以下重量份数的组分：EVA降凝剂15-85份,甲基丙烯酸十四酯-甲基丙烯酸缩水甘油酯共聚物15-85份,所述的甲基丙烯酸十四酯-甲基丙烯酸缩水甘油酯共聚物通过以下制得：先取甲基丙烯酸十四酯与甲基丙烯酸缩水甘油酯混合,再与过氧化苯甲酰一起加入溶剂中,加热反应,即得到甲基丙烯酸十四酯-甲基丙烯酸缩水甘油酯共聚物。与现有技术相比,本发明的含EVA复配型柴油降凝剂可将柴油的冷凝点降低16-19℃、冷滤点降低6-9℃,有效解决了柴油在低温下流动性差的问题,进一步提高了柴油的低温流动性能。(The present invention relates to a kind of diesel pour inhibitor of Compositional type containing EVA and its preparation and application, the diesel pour inhibitor of Compositional type containing EVA includes the component of following parts by weight: 15-85 parts of EVA pour-point depressant, tetradecyl methylacrylate -15-85 parts of glycidyl methacrylate copolymer, tetradecyl methylacrylate-the glycidyl methacrylate copolymer is made by following: first tetradecyl methylacrylate being taken to mix with glycidyl methacrylate, it is added in solvent together with benzoyl peroxide again, heating reaction, obtain tetradecyl methylacrylate-glycidyl methacrylate copolymer.Compared with prior art, the condensation point of diesel oil can be reduced 16-19 DEG C, 6-9 DEG C of cold filter plugging point reduction by the diesel pour inhibitor of Compositional type containing EVA of the invention, solved the problems, such as diesel oil poor fluidity at low temperature, further improved the low temperature fluidity of diesel oil.)

1. a kind of diesel pour inhibitor of Compositional type containing EVA, which is characterized in that the component including following parts by weight: EVA pour-point depressant 15-85 parts, tetradecyl methylacrylate -15-85 parts of glycidyl methacrylate copolymer.

2. one kind diesel pour inhibitor of Compositional type containing EVA according to claim 1, which is characterized in that the metering system Sour 14 esters-glycidyl methacrylate copolymer is made by following:

First tetradecyl methylacrylate is taken to mix with glycidyl methacrylate, then is added together with benzoyl peroxide molten In agent, heating reacts to arrive tetradecyl methylacrylate-glycidyl methacrylate copolymer.

3. one kind diesel pour inhibitor of Compositional type containing EVA according to claim 2, which is characterized in that the metering system The molar ratio of sour 14 esters and glycidyl methacrylate is (2-4): 1.

4. one kind diesel pour inhibitor of Compositional type containing EVA according to claim 2, which is characterized in that benzoyl peroxide Additive amount meets: it is 1:(95- with the mass ratio of tetradecyl methylacrylate and the mixture of glycidyl methacrylate 105)。

5. one kind diesel pour inhibitor of Compositional type containing EVA according to claim 2, which is characterized in that methacrylic acid 14 The mass ratio of ester, the mixture of glycidyl methacrylate composition and solvent is 4:1.

6. one kind diesel pour inhibitor of Compositional type containing EVA according to claim 2, which is characterized in that the solvent is toluene.

7. one kind diesel pour inhibitor of Compositional type containing EVA according to claim 2, which is characterized in that heat the condition of reaction Are as follows: 8-10h is reacted at 110-130 DEG C.

8. a kind of preparation method of diesel pour inhibitor of Compositional type containing EVA as claimed in claim 1, which is characterized in that EVA pour-point depressant is taken to be uniformly mixed with tetradecyl methylacrylate-glycidyl methacrylate copolymer described to get arriving The diesel pour inhibitor of Compositional type containing EVA.

9. a kind of application of diesel pour inhibitor of Compositional type containing EVA as claimed in claim 1, which is characterized in that make Used time takes the diesel pour inhibitor of Compositional type containing EVA to be added in diesel oil, wherein matter of the diesel pour inhibitor of Compositional type containing EVA in diesel oil Measuring percentage composition is 0.15%.

10. a kind of application of diesel pour inhibitor of Compositional type containing EVA according to claim 9, which is characterized in that multiple containing EVA After distribution type diesel pour inhibitor is added into diesel oil, the ultrasonic disperse 25-35min at 35-45 DEG C.

Technical field

The invention belongs to diesel pour inhibitor technical field, be related to a kind of diesel pour inhibitor of Compositional type containing EVA and its preparation and Using.

Background technique

Diesel oil is midbarrel, and the low temperature fluidity of diesel oil is to limit an important factor for its low temperature uses.When temperature drops When low, the long-chain normal paraffin solubility in diesel oil is reduced, and starts to be precipitated in the form of wax crystalline substance, and the wax crystalline substance of precipitation is with three dimensional network Shape encapsulated by structures lives diesel oil, makes its solidification, to influence the use of diesel engine.

Pour-point depressant has become the prefered method for improving diesel low-temperature liquidity at present because of its economic, convenient advantage. Pour-point depressant ethylene-vinyl acetate class, polyacrylate, copolymer-maleic anhydride for studying at present etc., these pour-point depressants pair The oil product place of production and model dependence are bigger, and effect is unstable, and exploitation Compositional type pour-point depressant is the hot spot studied at present.

If Chinese patent 201811597071.9 discloses a kind of preparation method of diesel pour inhibitor, first with methyl-prop Olefin(e) acid and polyalcohol are raw material, and it is catalyst to benzene methanesulfonic acid, hydroquinone is that polymerization inhibitor passes through that toluene, which is solvent and azeotropic agent, Direct esterification prepares higher alkyl methacrylate；Then under nitrogen protection, by a certain percentage by higher alkyl methacrylate, Maleic anhydride and vinylacetate are added in reaction kettle, are warming up to reaction temperature, and a certain amount of initiator is added, and constant temperature polymerize 6-8 Hour, reaction terminates, and it is dry with anhydrous calcium chloride, obtain faint yellow viscous liquid pour-point depressant.This patent is ter-polymers, The increase of polymerized monomer has accordingly increased cost；The condensation point and cold filter plugging point of diesel oil are reduced by the ter-polymers of synthesis simultaneously It is deteriorated compared to Compositional type pour-point depressant economy.

Summary of the invention

It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of bavins of Compositional type containing EVA Oily pour-point depressant and its preparation and application.

The purpose of the present invention can be achieved through the following technical solutions:

One of technical solution of the present invention is the provision of a kind of diesel pour inhibitor of Compositional type containing EVA, including following weight The component of number: 15-85 parts of EVA pour-point depressant, tetradecyl methylacrylate-glycidyl methacrylate copolymer 15-85 Part.

Further, the tetradecyl methylacrylate-glycidyl methacrylate copolymer passes through following system :

First tetradecyl methylacrylate is taken to mix with glycidyl methacrylate, then added together with benzoyl peroxide Enter in solvent, heating reacts to arrive tetradecyl methylacrylate-glycidyl methacrylate copolymer.

Further, the molar ratio of the tetradecyl methylacrylate and glycidyl methacrylate is (2- 4):1。

Further, the additive amount of benzoyl peroxide meets: itself and tetradecyl methylacrylate and methacrylic acid The mass ratio of the mixture of ethylene oxidic ester is 1:(95-105).

Further, the mixture and solvent of tetradecyl methylacrylate, glycidyl methacrylate composition Mass ratio is 4:1.

Further, the solvent is toluene.Tetradecyl methylacrylate-glycidyl methacrylate copolymer During preparation, toluene is as solvent, and benzoyl peroxide is as initiator.

Further, the condition of reaction is heated are as follows: react 8-10h at 110-130 DEG C.

The two of technical solution of the present invention are the provision of a kind of preparation method of diesel pour inhibitor of Compositional type containing EVA, It is characterized in that, takes EVA pour-point depressant to be uniformly mixed with tetradecyl methylacrylate-glycidyl methacrylate copolymer, i.e., Obtain the diesel pour inhibitor of Compositional type containing EVA.

The three of technical solution of the present invention are the provision of a kind of application of diesel pour inhibitor of Compositional type containing EVA, feature It is, when in use, takes the diesel pour inhibitor of Compositional type containing EVA to be added in diesel oil, wherein the diesel pour inhibitor of Compositional type containing EVA exists Mass percentage in diesel oil is 0.15%.

Further, after the diesel pour inhibitor of Compositional type containing EVA is added into diesel oil, the ultrasonic disperse 25- at 35-45 DEG C 35min。

Tetradecyl methylacrylate-glycidyl methacrylate copolymer and EVA pour-point depressant, which play, to act synergistically, from And play the effect for improving diesel low-temperature liquidity.It is wherein total in tetradecyl methylacrylate-glycidyl methacrylate In polymers, chain alkyl is as the raw interaction of wax trichite in non-polar group and diesel oil in tetradecyl methylacrylate；First Ester group is adsorbed on wax crystalline substance as polar group in the two polymerized monomers of base tetradecyl acrylate, glycidyl methacrylate Surface, change the crystal habit of wax crystalline substance, prevent small wax recovery from forming bulk wax crystalline substance, effectively so as to improve the low temperature of diesel oil Mobile performance.In EVA pour-point depressant, polarity VA group adsorbs its growth of wax crystalline substance surface disturbance, and then reaches the effect of pour point depression.

The molar ratio of tetradecyl methylacrylate and glycidyl methacrylate is in suitable range, competence exertion Better depression effeCt, if molar ratio is higher than upper limit value or can make the polarity and dissolubility hair of copolymer pour-point depressant lower than lower limit value It is raw to change, to influence depression effeCt.If polar group too high levels, reduced with the ability that wax eutectic is precipitated, if polar group Mass contg is too low, then preferable peptizaiton can not be formed to wax crystalline substance.The addition of remaining raw material has optimal proportion, it is excessive or It is very few；Reaction temperature has most suitable reaction interval, too high or too low, can all influence the progress of reaction and the generation of product, To influence depression effeCt.

In the present invention, the diesel pour inhibitor long alkyl chain of synthesis, which is adsorbed on the wax crystalline substance surface being just precipitated, can increase polymerization Oil-soluble of the object in diesel oil.The polar group contained hinders the growth of wax crystalline substance, to reach improvement research of cold flow properties of diesel fuel Effect.

In the present invention, tetradecyl methylacrylate-glycidyl methacrylate copolymer is compounded with EVA pour-point depressant When, by producing preferable compounding synergistic effect, the low temperature flow of diesel oil is improved, depression effeCt is improved.

Compared with prior art, Compositional type containing EVA of the invention diesel pour inhibitor is added in diesel oil, after tested can be by bavin The condensation point of oil reduce 16-19 DEG C, cold filter plugging point reduce 6-9 DEG C, overcome the problem of diesel pour inhibitor effect difference at low temperature, energy It enough further increases the low temperature flow of diesel oil, improves its low temperature fluidity.

Detailed description of the invention

Fig. 1 is the tetradecyl methylacrylate-glycidyl methacrylate copolymer being prepared in embodiment 1 Nuclear magnetic resonance (1HNMR) spectrogram；

Fig. 2 is the tetradecyl methylacrylate-glycidyl methacrylate copolymer being prepared in embodiment 1 Infrared spectrum.

Specific embodiment

The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention Premised on implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to Following embodiments.

Used each raw material is commercial product in following embodiment.Wherein: 0# diesel oil is purchased from Shanghai Songjiang gas station, EVA pour-point depressant is purchased from the smooth Science and Technology Co., Ltd. of upper Haitai.Remaining raw material or technology unless otherwise instructed, then show be The conventional commercial raw material or Technology development of this field.

The measurement method of condensation point according to " measurement of GB510-83 petroleum products questionable points " progress, the measurement method of cold filter plugging point according to It is carried out according to " SH/T0248-2006 diesel oil and domestic heating oil cold filter plugging point measuring method ".