Plate-strip steel cold-rolling emulsified oil containing nanometer hexagonal boron nitride particles, and preparation method

A technology of hexagonal boron nitride and emulsified oil, which is applied in the petroleum industry, dyeing low-molecular organic compound treatment, additives, etc., can solve the problems of nano-particle dispersion, achieve the effect of improving lubrication performance and reducing wear

Inactive Publication Date: 2010-04-28
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

The main reason lies in the rolling emulsion containing nanoparticles, not only the disper...
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Abstract

The invention belongs to the technical field of lubricant, and relates to plate-strip steel cold-rolling emulsified oil containing nanometer hexagonal boron nitride particles, and a preparation method, which is used for lubrication in a plate-strip steel cold-rolling process. The emulsified oil comprises the following components in percentage by weight: 0.2 to 1 percent of nanometer hexagonal boron nitride particles, 62 to 72 percent of 12-DEG C palm oil, 0 to 5 percent of vulcanized castor oil, 10 to 12 percent of Span to 80, 6 to 8 percent of Tween-60, 5 to 6 percent of oleic acid, 1.5 to 2 percent of triethanolamine, 4 to 5 percent of petroleum sodium sulfonate with 35 to 45 percent of active substances, and 0 to 2 percent of triorthocresol phosphate. The preparation method adopts the Span-80 serving as an emulsifier and the oleic acid serving as polymeric fatty acid in a formulation to achieve the aim of dispersing nanoparticles through surface modification and molecular complexation without changing the properties of nanometer hexagonal boron nitride or affecting the stability and rust resistance of the primary rolling emulsion. After the plate-strip steel cold-rolling emulsified oil containing nanometer boron nitride particles is diluted with water into the emulsion with volume concentration between 2 and 8 percent, the emulsion can be directly used in the cold-rolling process of plate-band steel. Moreover, the emulsified oil has the advantages of high extreme-pressure lubrication performance, good cooling property, long antirust cycle and safe environmental-friendly use.

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  • Plate-strip steel cold-rolling emulsified oil containing nanometer hexagonal boron nitride particles, and preparation method

Examples

  • Experimental program(3)

Example Embodiment

[0019] Example 1
[0020] The main components and weight ratio, see Table 2
[0021] Table 2
[0022] Serial number
[0023] Preparation:
[0024] The first step: In order to achieve a better dispersion effect of the nano-boron nitride particles and the convenience of the experimental operation, the components used for the dispersion of the nanoparticles are increased by 10 times, that is, 105 grams of Span-80, 50 grams of oleic acid, 2 grams of nano boron nitride particles were added to the beaker in turn, placed on a thermostatic heating magnetic stirrer, heated to 60°C, stirred at a constant temperature for 30 minutes, and cooled for later use.
[0025] The second step: 65.2 grams of palm oil at 12°C, 4 grams of sulfurized castor oil, 1 gram of tricresol phosphate, 4 grams of active substance 45% sodium petroleum sulfonate are added to the beaker in turn, and placed at a constant temperature of 400-500 rpm On a magnetic stirrer, heat to 90°C while stirring, stir at constant temperature for 30 minutes, then stir and cool to 60°C; when the temperature drops to 60°C, add 16.1 g of the mixture from the first step, 7 g of Tween6 and 1.7 g After stirring the triethanolamine for 30 minutes, continue to stir and cool to room temperature to obtain the cold-rolled emulsified oil containing nano-hexagonal boron nitride particles. According to the actual production situation, the steel plant dilutes the emulsified oil with water to form an emulsified liquid with a volume concentration of 2-8%, which can be directly used in the production process of cold rolling of strip steel.

Example Embodiment

[0026] Example 2
[0027] The main components and weight ratio, see Table 3 Table 3
[0028] Serial number
[0029] The combined preparation process of Example 2 is the same as that of Example 1. Only the weight ratio of each component is different.

Example Embodiment

[0030] Example 3
[0031] The main components and weight ratio, see Table 4
[0032] Table 4
[0033] Serial number
[0034] Serial number
[0035] The combined preparation process of Example 3 is the same as that of Example 1. Only the weight ratio of each component is different.
[0036] The performance of Example 3 is better, and the tribological properties and rolling lubrication properties of the configured emulsion are shown in the following table: Example 3 is prepared, and the performance indicators are shown in Table 5.
[0037] table 5
[0038]
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Description & Claims & Application Information

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