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A kind of composite retention aid and its preparation method and application

A technology of retention aid and clay minerals, applied in the field of composite retention aid and its preparation, can solve the problems of poor pattern printing performance, slow dehydration speed, low retention rate, etc., and achieve cost saving, concentration reduction, and dosage reduction. Effect

Active Publication Date: 2021-11-26
HANGZHOU JIUXU NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Titanium dioxide is delicate and wear-resistant. At present, traditional wet strength agents are mainly used to aid retention and drainage. The first-pass retention rate is low, the uniformity is poor, and the dehydration speed is slow; and titanium dioxide and fibers are easily produced during the production process. The flocculation of the product affects the uniformity and coverage of the product, so that the printing performance of the pattern is poor, and the bottom glue is easy to leak
There are problems such as large fluctuations in process adjustment and poor stability in production

Method used

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  • A kind of composite retention aid and its preparation method and application
  • A kind of composite retention aid and its preparation method and application
  • A kind of composite retention aid and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0062] A composite retention aid, prepared by the following steps: Step 1): Bentonite is pulverized through 60 meshes; bentonite: water is 2:8 (weight ratio) ratio for pulping, and after soaking for 2 hours, the slurry passes through 80 meshes. Mesh filter sieve, discard impurities, and dry the slurry to obtain purified bentonite after settling, for subsequent use;

[0063] Step 2): Add 0.5 part of Na to 6.0 parts of purified bentonite 2 CO3 , Carry out double extrusion on the stick; Then add 1.0 parts of high ionicity and low molecular weight anionic polyacrylamide (molecular weight 4 million), and 2.0 parts of magnesium silicate to compound to obtain a semi-finished product;

[0064] Step 3): crush the compounded semi-finished product through 325 mesh to obtain a compound retention aid.

Embodiment 2

[0066] A composite retention aid, prepared by the following steps: Step 1): Diatomite is pulverized through 60 mesh; Diatomite: water is 2:8 (weight ratio) ratio for pulping, soaked for 2 hours Finally, the slurry is passed through an 80-mesh filter sieve, impurities are discarded, and the slurry is dried after settling to obtain purified diatomite for subsequent use;

[0067] Step 2): Take 7 parts of purified diatomaceous earth and add 0.3 parts of Li 2 CO 3 , carry out double extrusion on the stick; then add 0.5 parts of high-ionicity low-molecular-weight anionic polyacrylamide (molecular weight is 5 million), and 1 part of magnesium silicate to compound to obtain a semi-finished product;

[0068] Step 3): crush the compounded semi-finished product through 325 mesh to obtain a compound retention aid.

Embodiment 3

[0070] A composite retention aid prepared by the following steps: Step 1): Diatomaceous earth is pulverized through 60 meshes; pulping is carried out by diatomite:water 2:8 (weight ratio) ratio, after soaking for 2 hours Pass the slurry through a 80-mesh sieve, discard impurities, and dry the slurry to obtain purified diatomaceous earth after settling, and set aside;

[0071] Step 2): Add 0.6 part of Na to 8 parts of purified diatomaceous earth 2 CO 3 , Carry out double extrusion on the stick; Then add 1.5 parts of high-ionicity low-molecular-weight anionic polyacrylamide (molecular weight is 3 million), 3 parts of aluminum silicate to compound to obtain semi-finished products;

[0072] Step 3): crush the compounded semi-finished product through 325 mesh to obtain a compound retention aid.

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Abstract

The invention discloses a composite retention aid and its preparation method and application, comprising the following raw materials in parts by weight: 6-8 parts of high whiteness clay minerals, 0.3-0.6 parts of sodium carbonate or lithium carbonate, high ionization and low molecular weight anions 0.5-1.5 parts of polyacrylamide, 1-3 parts of magnesium silicate or aluminum silicate. The advantages of the composite retention aid of the present invention are as follows: reducing the concentration of white water, stabilizing the wet end system, improving retention and reducing the consumption of pulp, and saving costs. The improvement of filter aid is beneficial to increase the speed of the vehicle and save the unit consumption of steam. energy saving. The formation is improved and the paper quality is improved. Improves the printing properties of paper. Adsorption and inhibition of stickies facilitates improved wet end cleaning. Clean manufacturing. Environmental friendly. Extend the service life of consumables such as forming nets and improve the stability of machine operation.

Description

technical field [0001] The application belongs to the field of retention aids for decorative base paper, in particular to a composite retention aid and its preparation method and application. Background technique [0002] Decorative base paper is an indispensable material for the decoration of many building materials in modern life. For example, low-pressure boards, high-pressure boards, fireproof boards, floors, etc. used in furniture and cabinets are placed under the surface paper in the product structure, mainly to provide decorative patterns and cover functions to prevent the bottom glue from seeping out. Therefore, the paper is required to have good hiding power, impregnation and printing properties. With the continuous improvement of people's requirements for living environment and working environment, the amount of decorative base paper continues to increase, the quality continues to improve, the variety of designs and colors is increasingly rich, and the requirement...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H21/10D21H17/68D21H17/66D21H17/42D21H21/20D21H27/18
CPCD21H21/10D21H17/68D21H17/66D21H17/42D21H21/20D21H27/18D21H17/74
Inventor 陈玖玖童筠
Owner HANGZHOU JIUXU NEW MATERIAL TECH CO LTD
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