Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of paper surface sizing strengthening additive and preparation method thereof

A surface sizing and additive technology, applied in biochemical equipment and methods, water repellent addition, microorganism-based methods, etc., can solve problems such as adverse effects on the ecological environment, improve printability and strength performance, improve paper Strength reduction, the effect of realizing continuous production

Active Publication Date: 2021-01-08
浙江杭化新材料科技有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these additives are synthetic polymers, and the oligomers or monomers produced after degradation have adverse effects on the ecological environment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of paper surface sizing strengthening additive and preparation method thereof
  • A kind of paper surface sizing strengthening additive and preparation method thereof
  • A kind of paper surface sizing strengthening additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0058] A preparation method for paper surface sizing strengthening additive, comprising the following steps:

[0059] 1) The bacterial cellulose is separated, soaked in 3-6wt% NaOH solution for 0.5-2h, and washed with deionized water until neutral to obtain pure bacterial cellulose.

[0060] Among them, the method of dispersing the bacterial cellulose is to adopt the method of combining high-speed tissue masher and ultrasonic wave; the conditions of the high-speed tissue masher are: the concentration of the bacterial cellulose suspension is 0.05-1.0%, the rotating speed is 10000-15000r / min, the dispersion The time is 10-40 minutes; the conditions of ultrasonic treatment are: the concentration of bacterial cellulose suspension is 0.05-0.5%, the amount of ultrasonic pulse is 50-80%, and the treatment time is 3-10 minutes.

[0061] The preparation method of described bacterial cellulose is:

[0062] a) Activation: inoculate Acetobacter xylinum into the seed medium, and culture i...

Embodiment 1

[0075] 1. Bacterial cellulose cultivation

[0076] (1) Prepare culture medium

[0077] Seed medium: glucose 5w / v%, peptone 0.5w / v%, citric acid 0.1w / v%, disodium hydrogen phosphate 0.2w / v%, potassium dihydrogen phosphate 0.1w / v%, yeast extract 0.5w / v%, pH=6.0, sterilized at 121°C, 0.1MPa for 30min.

[0078] Slant medium: glucose 5w / v%, peptone 0.5w / v%, citric acid 0.1w / v%, agar 2.0w / v%, calcium carbonate 0.05w / v%, pH=6.0, at 121°C, 0.1MPa Sterilize for 30min.

[0079] Fermentation medium: glucose 5w / v%, peptone 0.5w / v%, citric acid 0.1w / v%, disodium hydrogen phosphate 0.2w / v%, potassium dihydrogen phosphate 0.1w / v%, yeast extract 0.5w / v%, pH=6.0, sterilized at 121°C, 0.1MPa for 30min.

[0080] (2) Activation of strains

[0081] The strain is Acetobacter xylinum, inoculate the strain into the seed medium, plug the mouth of the bottle with sterilized cotton, shake it gently to disperse the seeds in the medium, and then cultivate it in a constant temperature incubator at 2...

Embodiment 5

[0112] Similar to Example 1, the difference is that the composition of the surface sizing agent is: the concentration of starch is 6%, the amount of modified bacterial cellulose added is 0.5% of the absolute dry weight of starch, and the tensile index of the obtained paper is 14.1 ± 0.2N m / g, the burst index is 2.36±0.2kPa.m 2 / g, the surface strength is 3.8±0.1m / s.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
strengthaaaaaaaaaa
stiffnessaaaaaaaaaa
strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of paper additives, and discloses a paper surface adhesive application reinforcing additive and a method for preparing the same. The paper surface adhesive application reinforcing additive comprises modified bacterial celluloses, starch and paper. The concentration of the starch is 5-15 wt%, and the mass of the modified bacterial celluloses is 0.05-5.0% of the absolute dry mass of the starch. The paper surface adhesive application reinforcing additive and the method have the advantages that the modified bacterial celluloses not only are of unique texture structures, but also contain a large quantity of hydroxyl, accordingly, the internal bond strength and the surface strength of paper can be obviously reinforced, and hair and powder dropping phenomena canbe effectively relieved; the prepared modified bacterial celluloses and the starch are compounded to obtain the paper surface adhesive application reinforcing additive by the aid of the method, excellent adhesive application effects can be realized, the paper with applied adhesive cannot be easily affected with damp, the paper surface adhesive application reinforcing additive is little in influence on the viscosity of applied adhesive liquid when compounded and applied with the starch, and the strength performance of the paper can be greatly improved under the condition of extremely low usage; the paper surface adhesive application reinforcing additive is green and environmentally friendly, is good in biocompatibility and is an environment-friendly biological material.

Description

technical field [0001] The invention relates to the field of paper additives, in particular to a paper surface sizing enhancing additive and a preparation method thereof. Background technique [0002] Surface sizing refers to the process of applying biological or chemical substances (ie, sizing agent) with film-forming or hydrophobic properties to the surface of paper to achieve the purpose of improving the surface properties, mechanical properties, and barrier properties of paper. Generally speaking, during the implementation of surface sizing, part of the sizing agent penetrates into the paper, and part of the sizing agent forms a continuous film on the surface of the paper. Inexpensive starch has long been the primary surface sizing agent. However, the use of starch surface sizing agents alone often cannot meet the surface strength requirements of paper. Therefore, in actual production, starch is often used in combination with synthetic surface sizing additives to achiev...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): D21H21/16D21H19/12C12P19/04C12R1/02
CPCC12P19/04D21H19/12D21H21/16
Inventor 周丹丹王立军姚献平赵文彦范俊
Owner 浙江杭化新材料科技有限公司