Preparation method of shear-resistant softener

A lubricant and anti-shear technology, which is applied in the field of preparation of anti-shear lubricants, can solve problems such as sticking rolls, cylinders, resistance to high shear, poor compatibility, etc., to improve the degree of reaction, Effect of improving shear resistance and improving rheological properties

Inactive Publication Date: 2018-10-12
翟琳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the shortcomings of existing amino-modified silicones, which are prone to sticking to rollers and cylinders during p

Method used

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  • Preparation method of shear-resistant softener

Examples

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Example Embodiment

[0017] Example 1

[0018] Take the rice bran and grind and pulverize, sieve through 200 mesh to obtain rice bran powder, add the rice bran powder to the 1% sodium hydroxide solution by mass fraction according to the mass ratio of 1:15, stir and mix and place at 75℃ for hydrolysis treatment for 3h, and filter to obtain The filtrate was adjusted to pH 1.5 with 20% hydrochloric acid by mass fraction, and the acid hydrolysis filtrate was filtered and collected again. The acid hydrolysis filtrate was added to ethyl acetate at a mass ratio of 1:10, mixed and extracted with stirring, and the acetic acid was distilled off under reduced pressure. Ethyl ester obtains the extract, filter and collect the extraction residue and add it to methanol at a mass ratio of 1:5, stir and mix and filter with a filter membrane with a pore size of 0.25 microns to collect the modified solution; parts by weight, respectively, weigh Place 45 parts of deionized water, 10 parts of modified liquid, 3 parts of ...

Example Embodiment

[0019] Example 2

[0020] Take the rice bran and grind and crush it, sieve through 200 meshes to obtain rice bran powder. According to the mass ratio of 1:15, add the rice bran powder to the 1% sodium hydroxide solution by mass fraction, stir and mix and place it at 77°C for hydrolysis for 4 hours, and filter to obtain The filtrate was adjusted to pH 1.5 with 20% hydrochloric acid by mass fraction, and the acid hydrolysis filtrate was filtered and collected again. The acid hydrolysis filtrate was added to ethyl acetate at a mass ratio of 1:10, stirred and mixed and extracted, and the acetic acid was distilled off under reduced pressure. Ethyl ester to obtain the extract, filter and collect the extraction residue and add it to methanol at a mass ratio of 1:5, stir and mix and filter with a filter membrane with a pore size of 0.25 microns to collect the modified solution; parts by weight are respectively weighed 47 parts of deionized water, 12 parts of modified liquid, 4 parts of 2...

Example Embodiment

[0021] Example 3

[0022] Take the rice bran and grind and pulverize, pass a 200 mesh sieve to obtain the rice bran powder, add the rice bran powder to the 1% sodium hydroxide solution by mass fraction according to the mass ratio of 1:15, stir and mix and place it at 85°C for hydrolysis treatment for 5 hours, and filter to obtain The filtrate was adjusted to pH 1.5 with 20% hydrochloric acid by mass fraction, and the acid hydrolysis filtrate was filtered and collected again. The acid hydrolysis filtrate was added to ethyl acetate at a mass ratio of 1:10, mixed and extracted with stirring, and the acetic acid was distilled off under reduced pressure. Ethyl ester to obtain the extract, filter and collect the extraction residue and add it to methanol at a mass ratio of 1:5, stir and mix and filter with a filter membrane with a pore size of 0.25 microns to collect the modified solution; parts by weight are respectively weighed 50 parts of deionized water, 15 parts of modified liquid,...

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Abstract

The invention relates to a preparation method of a shear-resistant softener, and belongs to the technical field of softeners. According to the technical scheme, rice bran is extracted, and extract iscollected; since a large amount of ferulic acid is included in the rice bran, during synthesis of the softener, an esterification reaction is performed between hydroxyl groups contained in the synthesized substance and carboxyl groups of the ferulic acid; and when the dosage of the ferulic acid is small, sufficient esterification is performed between the added ferulic acid and the hydroxyl groups,bonds are generated at the molecular chain segment, but when the amount of the ferulic acid participating in the reaction is increased, the number of bonds on the molecular chain segment is increased, so that the rheological performance of the softener material is improved effectively, and the shear-resistant performance of the softener material in the technical scheme is improved effectively; since the esterification reaction is an exothermic reaction during material synthesis, and heat is absorbed by bond breaking before esterification is conducted, the higher the temperature is in the process, the more sufficient the reaction is conducted, so that the esterification reaction is carried out at a suitable temperature, the degree of reaction is increased effectively, and the shear resistance of the softener material in the technical scheme is further improved.

Description

technical field [0001] The invention relates to a preparation method of a shear-resistant smooth agent, belonging to the technical field of smooth agents. Background technique [0002] The softness of paper is mainly related to factors such as the type and ratio of pulp, the degree of beating, the addition of chemical additives, and the papermaking process. In the production process of toilet paper and tissue paper, the creping process is usually used to reduce the bonding between fibers. Force, giving the paper a certain softness. But this cannot satisfy people's pursuit of the quality of these paper products, so it has become the choice of most paper mills to achieve good softening performance by using paper softeners, which also greatly promotes the development and research of paper softeners. [0003] Paper softeners can generally be divided into two categories: surfactant type and non-surfactant type. The cellulose in the paper is a straight-chain macromolecule with h...

Claims

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Application Information

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IPC IPC(8): D21H21/14D21H17/00D21H17/36D21H17/14D21H17/59D21H17/02
CPCD21H17/00D21H17/02D21H17/14D21H17/36D21H17/59D21H21/14
Inventor 翟琳蒋益
Owner 翟琳
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