Saline-resistant multifunctional water-preserving agent and method for preparing same

A water-retaining agent, multi-functional technology, applied in chemical instruments and methods, organic fertilizers, fertilizer mixtures, etc., can solve the problem of lack of plant organic nutrients, improve air permeability and oxygen permeability, long service life, and improve pellets effect of structure

Inactive Publication Date: 2005-11-23
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF1 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

We (application number 03120346.9) have selected cheap inorganic clay-attapulgite with salt tolerance to graft copolymerize with acrylic acid, acrylic acid and acrylamide, starch and acrylamide respectively to prepare a new type of organic-inorganic composite water retention agent, which can be used in distilled water and The water absorption rate of physiological saline and 0.5% calcium and magnesium solution is greatly improved, but this type of water retaining agent only contains trace elements needed by plants, and does not have organic nutrients necessary for plant growth

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

[0017] The natural attapulgite is soaked in hydrochloric acid for 24 hours, dried at 100-120°C until constant weight, crushed for later use. The mixture of 12 grams of corn starch and 130ml of distilled water was gelatinized at 95°C for 30 minutes, then cooled to 40°C, and 14 grams of attapulgite, 36 grams of acrylamide, 7 grams of humic acid, and 0.7 grams of initiator were added under vigorous stirring. , 0.021 g of cross-linking agent, heated to 50-70 ° C and maintained for 3-5 hours. Then the temperature was raised to 95° C., 60 ml of 5M sodium hydroxide solution was added, and kept for 1 hour. The product was dried at 70°C until constant weight, crushed, and passed through a 40-mesh sieve. Every gram of the product absorbs 623 grams of distilled water and 78 grams of 0.9% NaCl solution, and its color is pale yellow.

Embodiment 2

[0019] Soak the natural attapulgite in hydrochloric acid for 24 hours, dry it at 120°C until it reaches a constant weight, and crush it for later use. The mixture of 60 grams of corn starch and 1250 ml of distilled water was gelatinized at 95°C for 50 minutes, then cooled to 40°C, and 81 grams of attapulgite, 180 grams of acrylamide, 81 grams of humic acid, and 4.1 grams of initiator were added under vigorous stirring , 0.12 grams of cross-linking agent, heated to 50-70 ° C and maintained for 3-5 hours. Then the temperature was raised to 95° C., 300 ml of 5M sodium hydroxide solution was added, and kept for 1 hour. The product was dried at 70°C until constant weight, crushed, and passed through a 40-mesh sieve. Every gram of the product absorbs 561 grams of distilled water and 63 grams of 0.9% NaCl solution, and its color is pale yellow.

Embodiment 3

[0021] Soak the natural attapulgite in hydrochloric acid for 24 hours, bake it at 120°C until it reaches constant weight, and crush it for later use. The mixture of 20 grams of potato starch and 350 ml of distilled water was gelatinized at 95°C for 30 minutes, then cooled to 40°C, and 27 grams of attapulgite, 60 grams of acrylamide, 27 grams of humic acid, and 1.36 grams of initiator were added under vigorous stirring , 0.04 g of cross-linking agent, heated to 50-70 ° C and maintained for 3-5 hours. Then the temperature was raised to 95° C., 68 ml of 5M sodium hydroxide solution was added and kept for 2 hours. The product was dried at 70°C until constant weight, crushed, and passed through a 40-mesh sieve. Every gram of the product absorbs 692 grams of distilled water and 65 grams of 0.9% NaCl solution, and its color is pale yellow.

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
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a saline-resistant multifunctional water-preserving agent and method for preparation, wherein the water-loss reducer is prepared by using Attaplgite clay, starch, acrylamide, humic acid, cross linking agent and initiating agent as the raw material through the process of cross bonding polymerization. The water-loss reducer has the multifunction of organic-inorganic hybridization alkali-salt resistance.

Description

technical field [0001] The invention relates to a multifunctional water-retaining agent for afforestation in high salinity and barren soil and a preparation method thereof. Background technique [0002] Western my country has a vast territory and rich natural resources. However, due to the lack of water resources and human activities such as long-term over-cutting, over-reclamation, over-grazing, over-harvesting, etc., land degradation such as water and soil flow, desertification, and salinization in the west are serious; natural disasters such as drought and sandstorms are occurring more and more frequently, and it has become a western region. An important constraint factor for sustainable economic and social development. For this reason, the state has implemented the strategy of developing the western region, and regards the restoration of the ecological environment as an important construction content. [0003] In recent years, the state and local governments have inves...

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 Applications(China)
IPC IPC(8): C09K17/48
Inventor 王爱勤李安汪琴刘瑞凤
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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