Title:
EFFICIENT PREPARATION METHOD FOR EXPANDED SHAG
Document Type and Number:
WIPO Patent Application WO/2020/001496
Kind Code:
A1
Abstract:
Disclosed is an efficient preparation method for expanded shag. The preparation method comprises the following steps: a raw shag material absorbing water to obtain swollen shag; the swollen shag making contact and mixing with a water soluble liquid medium; drying the shag after contact and mixing with the liquid medium; and re-hydrating the dried shag to achieve a required water content and obtaining the expanded shag. The features of the method of the present invention comprise the following: A mixed solution is formed by contact between a liquid medium and water in the shag, and changing the permeability of the shag by the mixed solution can eliminate or reduce drying shrinkage stress caused by water during the drying process thereof, so as to maintain the expansion volume of the shag. The process is fast and effective with mild reaction conditions. An expansion rate of the expanded shag prepared by the method is adjustable. The efficient method achieves continuous production of expanded shag.
Inventors:
HUANG GUIWEN (CN)
XIAO HONGMEI (CN)
QU CHENGBING (CN)
LIU YU (CN)
XIAO HONGMEI (CN)
QU CHENGBING (CN)
LIU YU (CN)
Application Number:
PCT/CN2019/093096
Publication Date:
January 02, 2020
Filing Date:
June 26, 2019
Export Citation:
Assignee:
TECHNICAL INST OF PHYSICS AND CHEMISTRY OF THE CHINESE ACADEMY OF SCIENCES (CN)
International Classes:
A24B3/18
Foreign References:
| US3524451A | 1970-08-18 | |||
| CN101617855A | 2010-01-06 | |||
| US3786818A | 1974-01-22 | |||
| CN108095185A | 2018-06-01 |
Attorney, Agent or Firm:
BEIJING JANLEA PATENT AGENCY CO., LTD. (CN)
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