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A kind of water-soluble lubricant for papermaking and preparation method thereof

A lubricant and water-soluble technology, which is applied in the field of paper-making water-soluble lubricants and its preparation, can solve problems such as complex processes, and achieve the effect of improving smoothness and gloss, improving smoothness and gloss

Active Publication Date: 2018-03-13
SHANGHAI DONGSHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention is limited to the emulsion prepared by several emulsifiers and oxidized polyethylene wax, and the process is complicated

Method used

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  • A kind of water-soluble lubricant for papermaking and preparation method thereof
  • A kind of water-soluble lubricant for papermaking and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Synthesis of embodiment 1 water-soluble lubricant:

[0037] Step 1, add 100g of stearic acid, 10g of sodium phosphate, 5g of diethanolamine and 135g of deionized water into the reaction kettle, mix well, dissolve completely, and heat up to 90°C;

[0038] Step 2, at 90°C, add 20g of isomeric alcohol polyoxyethylene ether dropwise for 1 hour; after the dropwise addition, keep warm at 90°C for 1 hour;

[0039] Step 3: Cool down the heat-preserved mixed solution to 20° C., add 0.01 g of bronopol, continue stirring for 10 minutes, and filter the mixture through a 100-mesh sieve.

[0040] In step 4, the obtained water-soluble lubricant has a weight solid content of 49.7wt%, a viscosity of 634 mPa.s (measured by NDJ-1 rotational viscometer), and pH=7.18 (measured by PHS-3C precision pH meter).

Embodiment 2

[0041] The synthesis of embodiment 2 water-soluble lubricants:

[0042] Step 1, add 100g of palmitic acid, 30g of potassium phosphate, 20g of sodium hydroxide and 1800g of deionized water into the reaction kettle, mix well, dissolve completely, and heat up to 70°C;

[0043] Step 2: Add 50 g of isomeric alcohol polyoxyethylene ether mixture dropwise at 70°C for 3 hours; after the dropwise addition, keep warm at 70°C for 3 hours;

[0044] Step 3, cool down to 40°C, add 0.05g bronopol, 0.1g 5-chloro-2-methyl-4-isothiazolin-3-one, 0.05g 2-methyl-4-isothiazoline-3- Ketone, continued to stir for 10 minutes, and filtered the discharge with a 100-mesh sieve.

[0045] Step 4, the obtained water-soluble lubricant has a weight solid content of 10.9wt%, a viscosity of 11 mPa.s (measured by NDJ-1 rotational viscometer), and pH=10.81 (measured by PHS-3C precision pH meter).

Embodiment 3

[0046] The synthesis of embodiment 3 water-soluble lubricants:

[0047] Step 1, add 50g of palmitic acid, 50g of oleic acid, 10g of potassium phosphate, 10g of sodium phosphate, 5g of potassium hydroxide, 5g of triethylenediamine and 680g of deionized water into the reactor, mix well, dissolve completely, and heat up to 80 ℃;

[0048] Step 2, at 80°C, add 40g of isomeric alcohol polyoxyethylene ether dropwise for 2 hours; after the dropwise addition, keep warm at 80°C for 2 hours;

[0049] Step 3, cool down to 25°C, add 0.07g 5-chloro-2-methyl-4-isothiazolin-3-one, 0.05g 2-methyl-4-isothiazolin-3-one, and continue stirring for 10 minutes , and filter the discharge with a 100-mesh sieve.

[0050] Step 4, the weight solid content of the obtained water-soluble lubricant is 20.16wt%, the viscosity is 48mPa.s (measured by NDJ-1 rotational viscometer), and pH=8.69 (measured by PHS-3C precision pH meter).

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Abstract

The invention discloses a water-soluble lubricant for paper making and a preparation method of the water-soluble lubricant. The water-soluble lubricant for paper making is obtained through the following steps of mixing the following components of fatty acid, isomerized alcohol polyethenoxy ether, an inorganic modifying agent, alkali, a germicide and water, and performing a reaction. When the water-soluble lubricant for paper making, prepared by the method disclosed by the invention is applied to paper making coating of coated paper, the smoothness of the surface of the paper can be obviously improved, the lustrousness of the paper is improved, besides, the water-soluble lubricant is convenient and simple to prepare and convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of papermaking coatings, and in particular relates to a water-soluble lubricant for papermaking and a preparation method thereof. Background technique [0002] Lubricants generally contain hydrophobic groups in chemical composition, which have lubricating effect and release effect. The so-called lubricating effect refers to the effect of reducing the friction, wear and friction heat of the contact surface; the so-called release effect refers to the effect of reducing the adhesion of the contact surface. Specifically, the lubricant can prevent the powder falling of the paper sheet in the calender, drying cylinder, etc. in the production of coated paper and the powder falling of the coated paper in the printing operation; improve the separation of the coated paper on the cast coating cylinder Formability; imparts slip properties to paper and reduces friction. [0003] Lubricant is one of the trace additives ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H21/14D21H19/12
CPCD21H19/12D21H21/14
Inventor 施晓旦尹东华
Owner SHANGHAI DONGSHENG NEW MATERIALS