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Modified calcium silicate papermaking filler and preparation method thereof

A technology of papermaking filler and calcium silicate, applied in the field of papermaking, can solve the problems such as the inability to significantly improve the tear index and tensile index of paper, and achieve good application prospects, wide application, and the effect of increasing paper whiteness and opacity.

Active Publication Date: 2016-11-16
迁安博达纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention patent with application number CN02159775.8 discloses modifiers for paper-making fillers, paper-making fillers, preparation methods and applications, but it cannot significantly improve the tear index and tensile index of paper

Method used

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  • Modified calcium silicate papermaking filler and preparation method thereof

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Embodiment 1

[0022] It consists of the following components in parts by weight: 20 parts of modified calcium silicate, 10 parts of modified zeolite, 5 parts of magnesium aluminum alloy powder, 1 part of polyacrylamide, and 1 part of fatty acid sorbitan ester surfactant 1 part of a mixture of sodium methylcellulose and sodium alginate in a weight ratio of 1:1.

[0023] The preparation method of modified calcium silicate is as follows: Grind active calcium silicate into 800-mesh powder, soak it in 80% sulfuric acid for 3 hours, then add 10% NaOH solution for neutralization, and neutralize until the pH is 3 -6.

[0024] The preparation method of the modified zeolite is as follows: the zeolite is ground into a 300-mesh powder, soaked in lactic acid for 6 hours at 50° C., and then neutralized by adding triethylamine until the pH is 6.

[0025] The magnesium-aluminum alloy powder is composed of the following components according to the weight percentage: Mg: 15%, Si: 2%, Zn: 5%, O: 1%, and the ...

Embodiment 2

[0030] It consists of the following components in parts by weight: 40 parts of modified calcium silicate, 30 parts of modified zeolite, 15 parts of magnesium aluminum alloy powder, 5 parts of polyacrylamide, 3 parts of fatty acid sorbitan ester surfactant 3 parts of a mixture of sodium methylcellulose and sodium alginate in a weight ratio of 1:1.

[0031] The preparation method of the modified calcium silicate is as follows: Grind the active calcium silicate into a 400-mesh powder, soak it in sulfuric acid with a concentration of 60% for 5 hours, then add a NaOH solution with a concentration of 10% for neutralization, and neutralize until the pH is 6 .

[0032] The preparation method of the modified zeolite is as follows: the zeolite is ground into a 300-mesh powder, soaked in lactic acid for 6 hours at 50° C., and then neutralized by adding triethylamine until the pH is 6.

[0033] The magnesium-aluminum alloy powder is composed of the following components according to the w...

Embodiment 3

[0038] It consists of the following components in parts by weight: 30 parts of modified calcium silicate, 20 parts of modified zeolite, 10 parts of magnesium aluminum alloy powder, 3 parts of polyacrylamide, 3 parts of fatty acid sorbitan ester surfactant 1 part of a mixture of sodium methylcellulose and sodium alginate in a weight ratio of 1:1.

[0039] The preparation method of the modified calcium silicate is as follows: Grind the active calcium silicate into a 600-mesh powder, soak it in sulfuric acid with a concentration of 70% for 5 hours, then add a NaOH solution with a concentration of 10% for neutralization, and neutralize until the pH is 6 .

[0040] The preparation method of the modified zeolite is as follows: the zeolite is ground into a 300-mesh powder, soaked in lactic acid for 6 hours at 50° C., and then neutralized by adding triethylamine until the pH is 6.

[0041] The magnesium-aluminum alloy powder is composed of the following components according to the we...

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Abstract

The invention discloses a modified calcium silicate papermaking filler. The modified calcium silicate papermaking filler is prepared from the following components in parts by weight: 20-40 parts of modified calcium silicate, 10-30 parts of modified zeolite, 5-15 parts of magnesium aluminum alloy powder, 1-5 parts of a modifying agent, 1-3 parts of a dispersing agent, and 1-3 parts of a flexibilizer. The invention further discloses a preparation method of the modified calcium silicate papermaking filler. According to the technology disclosed by the invention, the formula is simple and easy to use, the modified calcium silicate papermaking filler has the advantages of being safe, environmentally-friendly and low in cost, the whiteness and the non transparency of paper can be increased, the tear indexes and the tensile indexes can be improved, and the modified calcium silicate papermaking filler has favorable application prospects.

Description

technical field [0001] The invention relates to the field of papermaking, in particular to a modified calcium silicate papermaking filler and a preparation method thereof. Background technique [0002] In order to improve the optical properties and printability of paper, meet some special performance requirements of paper, save fiber raw materials and reduce production costs, fillers are generally required to be added in the production of paper. The filling amount of different paper types varies greatly, ranging from 2%-3% to 40%. Since the price of general fillers is only one-tenth of the price of plant fibers or even lower, adding more fillers to paper can significantly reduce paper production costs. There are many types of paper-making fillers, the most commonly used ones are heavy calcium carbonate, light calcium carbonate, talcum powder, kaolin and so on. Different fillers have different physical and chemical properties. Even the same filler will have different paper-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/69D21H17/63D21H21/08D21H21/18D21H21/14
CPCD21H17/63D21H17/69D21H17/74D21H21/08D21H21/14D21H21/18
Inventor 不公告发明人
Owner 迁安博达纸业有限公司