Treatment method of nano silica particles for oil product drag reducer

A nano-silica, processing method technology, applied in the direction of dyeing organosilicon compound treatment, dyeing physical treatment, fibrous filler, etc., can solve the problems of molecular weight reduction, loss of drag reduction function, etc. The effect of compounding efficiency

Active Publication Date: 2015-04-29
PIPECHINA SOUTH CHINA CO
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Problems solved by technology

However, the current high molecular weight polymers with a molecular weight of several million are very easy to lose the drag reduction function-shear degradation due to the molecular chain breakage to reduce the molecular weight, and this kind of degradation property is permanent and irrevers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Dissolve 20g of n-heptane in 100g of N-methylpyrrolidone to prepare a dispersion, place it in a 25khz ultrasonic environment, take 50g of nano-silica with a specific surface area of ​​640m2 / g and a primary particle size of 10nm, and make the nano-silica Silicon was added in 5 times, the mass order of adding was 20g, 15g, 7.5g, 5g, 2.5g, each interval was 5min, and ultrasonic was 30min. Prepare the compound type I silane coupling agent according to the mass ratio of KH-550 and KH-570 of 3:1, and prepare the compound type II silane according to the mass ratio of KH-550, KH-560 and A-172 in the ratio of 5:3:1 coupling agent. Prepare the modifier according to the mixing mass ratio of type I silane coupling agent, modifier additive and deionized water as 100:10:5. Divide 2g of modifier into 5 times, add 0.4g each time to the dispersion, refrigerate at -30°C for 5h, and stir at 60rad / min at a constant temperature of 40°C for 6h. Centrifuge three times, wash and filter each ...

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Abstract

The invention relates to a treatment method of nano silica particles for an oil product drag reducer. The method comprises the following steps: firstly, putting a nano silica dispersion liquid into an ultrasonic environment, and dissolving the nano silica particles into a nano silica dispersion liquid in batches until the solution is clear; mixing a compound silane coupling agent I, a modifier assistant and deionized water, adding the mixture to the nano silica dispersion liquid in batches, refrigerating at a low temperature, and carrying out treatment in an air isolating manner; carrying out centrifugal treatment on the nano silica dispersion liquid for three times, dissolving the centrifuged nano silica dispersion liquid into normal heptane, and adding a compound silane coupling agent II in batches, wherein the nano silica dispersion liquid is N-methyl pyrrolidone and normal heptane, the compound silane coupling agent I is KH-550 and KH570, and the compound silane coupling agent II is KH-550, KH560 and A-172. According to the method, the compound experiment process of the oil product drag reducer is optimized; good dispersion of nano silica packing and the stability and invariance of organic matrix in the compound process are ensured; and the compound efficiency is improved.

Description

technical field [0001] The invention relates to a surface treatment method of nano silicon dioxide particles in the process of preparing composite materials from oil drag reducers, and belongs to the post-treatment technology of composite oil drag reducers in the field of pipeline chemical additives. Background technique [0002] Oil drag reducer is a kind of high molecular polymer, which can reduce the frictional energy loss in the oil flow through the elastic deformation of the molecular chain, reduce the flow resistance, and achieve the effect of reducing drag and increasing transmission. The oil drag reducer can increase the output without adding additional equipment after the original pipeline reaches the maximum output; or reduce the operating pressure of the oil pipeline and reduce safety risks while maintaining the same output. The oil drag reducer has the characteristics of low cost, quick effect, obvious drag reduction, and flexibility and convenience. It can reali...

Claims

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Application Information

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IPC IPC(8): C09C1/28C09C3/12C09C3/04
Inventor 李国平代晓东郭旭郭海峰李春漫贾子麒常维纯高艳清
Owner PIPECHINA SOUTH CHINA CO
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