A modifying method of soft wollastonite fibers

A technology of wollastonite fiber and wollastonite, which is applied in the direction of radioactive element fiber treatment, fiber treatment, improved hand feeling fiber, etc., which can solve the adverse effects of paper-forming performance and strength indicators, limited combination of cationic modifiers, and increased modification In order to achieve the effect of increasing active groups, improving application performance and weakening force

Inactive Publication Date: 2016-05-04
CHENDU NEW KELI CHEM SCI CO LTD
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, the current modification method for wollastonite fiber is mainly to use cationic modifiers for surface modification, although the compatibility between wollastonite fiber and plant fiber has been improved to a certain extent, and the mineral fiber has been improved. The retention rate in the papermaking process, but because there are few active groups on the surface o

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Add 60 parts by weight of wollastonite into a sodium hydroxide solution with a mass fraction of 1.5% and stir for 50 minutes, so that the surface of the wollastonite fiber presents a honeycomb microporous structure, then filter, and add 10 parts by weight of poly Methylsiloxane, continue stirring for 30min to obtain modified wollastonite fibers;

[0024](2) Put the modified wollastonite fiber obtained in step (1) into a closed stirred reactor, add 10 parts by weight of polyethyleneimine and 10 parts by weight of polymaleic acid and stir for 10 minutes to make the wollastonite Mix the fiber and the polymer evenly; place the mixture in a gamma ray irradiation device with a radiation dose rate of 3-10kGy / h, add 5 parts by weight of N-methylpyrrolidone, and use the delivery system for dynamic irradiation treatment with a radiation dose of 30kGy , to make polyethyleneimine and polymaleic acid undergo copolymerization reaction, and graft to the surface of wollastonite fib...

Embodiment 2

[0027] (1) Add 70 parts by weight of wollastonite into a sodium hydroxide solution with a mass fraction of 2% and stir for 30 minutes, so that the surface of the wollastonite fiber presents a honeycomb microporous structure, then filter, and add 10 parts by weight of poly Methylsiloxane, continue stirring for 30min to obtain modified wollastonite fibers;

[0028] (2) Put the modified wollastonite fiber obtained in step (1) into a closed stirring reactor, add 5 parts by weight of polyethyleneimine and 5 parts by weight of polymaleic acid and stir for 10 minutes to make the wollastonite Mix the fiber and the polymer evenly; place the mixture in a γ-ray irradiation device with a radiation dose rate of 3-10kGy / h, add 3 parts by weight of N-vinylpyrrolidone, and use the delivery system to dynamically irradiate with a radiation dose of 50kGy , to make polyethyleneimine and polymaleic acid undergo copolymerization reaction, and graft to the surface of wollastonite fiber after surface...

Embodiment 3

[0031] (1) Add 80 parts by weight of wollastonite into a sodium hydroxide solution with a mass fraction of 2% and stir for 50 minutes, so that the surface of the wollastonite fiber presents a honeycomb microporous structure, then filter, and add 5 parts by weight of poly Methylsiloxane, continue stirring for 30min to obtain modified wollastonite fibers;

[0032] (2) Put the modified wollastonite fiber obtained in step (1) into a closed stirred reactor, add 5 parts by weight of polyethyleneimine and 5 parts by weight of polymaleic acid and stir for 5-10 minutes to make the silicon Mix the limestone fiber and the polymer evenly; place the mixture in a gamma ray irradiation device with a radiation dose rate of 3-10kGy / h, add 1 weight part of polyvinylpyrrolidone, and use the delivery system to dynamically irradiate with a radiation dose of 30kGy , to make polyethyleneimine and polymaleic acid undergo copolymerization reaction, and graft to the surface of wollastonite fiber after ...

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

No PUM Login to view more

Abstract

The invention belongs to the field of inorganic mineral fibers and particularly relates to a modifying method of soft wollastonite fibers. The method is characterized in that the soft wollastonite fibers are prepared by adding wollastonite fibers into a sodium hydroxide solution, performing alkaline treatment to allow surfaces of the wollastonite fibers to be in a honeycomb microcellular structure, adding polydimethylsiloxane, stirring, mixing to obtain the modified wollastonite fibers, subjecting the modified wollastonite fibers, polyethyleneimine and polymaleic acid to gamma-ray radiation under functions of an initiator to allow the polymaleic acid and the polyethyleneimine to be subjected to copolymerization and to be grafted to the surfaces of the wollastonite fibers, and adding a cationic surface modifying agent for surface covering. Surface activity of the wollastonite fibers can be improved through the method, softness and dispersity of the wollastonite fibers are improved, and bonding force between the wollastonite fibers and plant fibers is increased. The soft wollastonite fibers are capable of obviously improving softness of paper and allowing paper to be good in hand feel and light in weight when the soft wollastonite fibers are used for papermaking.

Description

technical field [0001] The invention belongs to the field of inorganic mineral fibers, in particular to a method for modifying flexible wollastonite fibers. Background technique [0002] The paper industry plays an important role in the global economy and civilization, and its output value accounts for 2.5% of the world's total industrial output value and 2% of the world's total trade. Wood is the main raw material of the papermaking industry, accounting for more than 93% of the papermaking raw materials. With the rapid development of the papermaking industry, large-scale deforestation has been caused, the forest area of ​​the world has decreased sharply, desertification has intensified, and it has also brought serious pollution to the environment. , affecting human health. At present, the total amount of paper production in our country is constant, and there is a serious shortage of paper raw materials, which forces us to actively look for cheap pulp fiber substitutes. Si...

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
IPC IPC(8): D06M15/11D06M11/38D06M10/10D06M15/643D06M13/463D06M13/352D21H13/38
CPCD06M15/11D06M10/008D06M11/38D06M13/352D06M13/463D06M15/643D06M2200/50D21H13/38
Inventor 陈庆孙丽枝
Owner CHENDU NEW KELI CHEM SCI CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap