Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of aliphatic water reducing agent prepared by utilizing straw and preparation method thereof

A technology of aliphatic water-reducing agent and straw, which is applied in the field of aliphatic water-reducing agent and its preparation, can solve the problems that have not yet seen the experimental application effect, achieve good promotion and application prospects, improve low water-reducing rate, and improve retardation bad effect

Inactive Publication Date: 2017-12-19
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
View PDF4 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of crop straw to directly prepare aliphatic water reducers has not yet seen good tests and reports with good application effects.

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 aliphatic water reducing agent prepared by utilizing straw and preparation method thereof
  • A kind of aliphatic water reducing agent prepared by utilizing straw and preparation method thereof
  • A kind of aliphatic water reducing agent prepared by utilizing straw and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The aliphatic water reducer prepared from straw provided in this example is specifically prepared through the following steps:

[0048] (1) Pretreating the straw, which is wheat straw;

[0049] After crushing the straw through a 40-mesh sieve, take 20 g as a test sample, add 200 mL of sulfuric acid with a mass concentration of 2%, stir and mix evenly, soak for 24 hours, filter and rinse the straw with water until it is neutral, and then set aside;

[0050] (2) Preparative aliphatic water reducer, the specific process is:

[0051] First, add 10 mol of water to the reaction kettle, then add 0.4 mol of sodium sulfite to fully dissolve, and use strong stirring to assist in accelerating the dissolution of sodium sulfite;

[0052] Second, add 0.9 mol of acetone to the above-mentioned dissolved sodium sulfite solution, sulfonate for 10 minutes; then add 12 g of straw pretreated in step (1), and stir for 30 minutes;

[0053]Third, slowly add 4.5 mol of formaldehyde (formaldeh...

Embodiment 2

[0056] The preparation method of the aliphatic water-reducer prepared from straws provided in this example is the same as that in Example 1, except that some material types and dosages have been properly adjusted, as described below.

[0057] In this example, corn stalks are used to prepare aliphatic water reducer, and the straw pretreatment is soaked in hydrochloric acid with a mass concentration of 4%. During the preparation of aliphatic water reducer, in terms of molar ratio, water: sodium sulfite: acetone : formaldehyde=10:0.3:0.8:4; the amount of straw after pretreatment is 11.25g;

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 relates to the technical field of preparation of water reducers of construction engineering, in particular to an aliphatic water reducer prepared from straw and a preparation method thereof. The water reducer is prepared in the steps of washing straw with acid, modifying an aliphatic water reducer with the straw and the like. The defect that an existing biologic water reducer product is low in water reduction rate is overcome, the defect that when the aliphatic water reducer is used, concrete separation, weepage and retardation effects are poor is overcome, environmental friendliness and economic efficiency are good, and application and popularization prospects are good. The water reducer has the technical advantages that waste straw resources are effectively used, the defect that the existing aliphatic water reducer is poor in retardation effect is overcome, the application range of the aliphatic water reducer is widened, reaction conditions and the proportion of reactants in the preparation process of the aliphatic water reducer are optimized, stability of product quality can be better protected, and production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of water reducer preparation for construction engineering, in particular to an aliphatic water reducer prepared from straw and a preparation method thereof. Background technique [0002] At present, there are many types of water reducers on the market, including polycarboxylate, aliphatic, naphthalene, sulfamate, and modified lignin. The effect of water is the most significant, but with the decrease of its main raw material oil and the rise of its price, its market price remains high; the production of naphthalene-based water reducers is relatively large in my country, and its performance is relatively superior, but in the production process It consumes a lot of energy and will produce by-products that pollute the environment. In addition, if the measures are not taken properly during production, it will have adverse effects on the environment and humans; the preparation cost of sulfamate and modified lignin w...

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): C08G16/06C04B24/16C04B103/30
CPCC04B24/166C04B2103/302C08G16/06
Inventor 郭毅萍李国亭刘秉涛朱卫勇李娜胡兴星
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com