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

Cationic polyacrylamide and preparation method thereof

A technology of polyacrylamide and acrylamide, which is applied in the field of polyacrylamide, can solve the problems of low versatility, weak flocculation ability of strong acid and high-salt sewage, etc. big effect

Inactive Publication Date: 2020-07-03
张淑贞
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The cationic polyacrylamide products currently on the market are very selective for the substances in the treated sewage, but have weak flocculation ability for strong acid and high-salt sewage. Often adding a large amount of cationic polyacrylamide flocculants can only produce a small amount of flocculation Sediment, not very versatile

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

[0029] A cationic polyacrylamide comprises the following raw materials in parts by weight: 350 parts of acrylamide, 250 parts of dimethylaminoethyl methacrylate chloride, and 250 parts of dimethylaminoethyl methacrylate chloride.

[0030] Its preparation method comprises the following steps:

[0031] Step 1, batching: Weigh acrylamide, dimethylaminoethyl ethyl chloride methane methacrylate and dimethylaminoethyl ethyl chloride methane acrylate into the batching kettle according to parts by weight, and add purified water to make the mixture in the batching kettle The concentration of the solution is 99.5%. After adding 100 parts of sodium hydroxide initiator, the solution is fed into the polymerization kettle;

[0032] Step 2, polymerization: feed nitrogen into the polymerization kettle, add 100 parts of sodium hydroxide, 28 parts of carboxymethyl cellulose initiator, feed nitrogen for 15 minutes, add 26 parts of carboxymethyl cellulose, 270 part of aluminum oxide initiator, a...

Embodiment 2

[0036] A cationic polyacrylamide comprises the following raw materials in parts by weight: 450 parts of acrylamide, 350 parts of dimethylaminoethyl methacrylate chloride, and 350 parts of dimethylaminoethyl methacrylate chloride.

[0037] Its preparation method comprises the following steps:

[0038] Step 1, batching: Weigh acrylamide, dimethylaminoethyl ethyl chloride methane methacrylate and dimethylaminoethyl ethyl chloride methane acrylate into the batching kettle according to parts by weight, and add purified water to make the mixture in the batching kettle The concentration of the solution is 99.9%. After adding 120 parts of sodium hydroxide initiator, the solution is fed into the polymerization kettle;

[0039]Step 2, polymerization: feed nitrogen into the polymerization kettle, add 120 parts of sodium hydroxide, 35 parts of carboxymethyl cellulose initiator, feed nitrogen for 25 minutes, add 34 parts of carboxymethyl cellulose, 330 part of aluminum oxide initiator, af...

Embodiment 3

[0043] A cationic polyacrylamide comprises the following raw materials in parts by weight: 380 parts of acrylamide, 280 parts of dimethylaminoethyl chloride methyl methacrylate, and 280 parts of dimethylamino ethyl chloride methyl acrylate.

[0044] Its preparation method comprises the following steps:

[0045] Step 1, batching: Weigh acrylamide, dimethylaminoethyl ethyl chloride methane methacrylate and dimethylaminoethyl ethyl chloride methane acrylate into the batching kettle according to parts by weight, and add purified water to make the mixture in the batching kettle The solution concentration is 99.6%. After adding 105 parts of sodium hydroxide initiator, the solution is fed into the polymerization kettle;

[0046] Step 2, polymerization: feed nitrogen into the polymerization kettle, add 105 parts of sodium hydroxide, 29 parts of carboxymethyl cellulose initiator, feed nitrogen for 16 minutes, add 27 parts of carboxymethyl cellulose, 280 parts part of aluminum oxide in...

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 discloses cationic polyacrylamide and a preparation method thereof, and relates to the technical field of polyacrylamide. The cationic polyacrylamide comprises the following raw materials: acrylamide, dimethylaminoethyl methacrylate chloromethane salt and dimethylaminoethyl acrylate chloromethane salt. According to the cationic polyacrylamide provided by the invention, by adoption ofa network penetration micro-crosslinking polymerization method, the hydrolysis degree is close to 0; the ionization degree is large; and the acidity-alkalinity resistance is significantly enhanced; the cationic polyacrylamide provided by the invention carries fewer ionic charges and has more blank surfaces, so a bridge is easier to be formed, and flocculation is better formed; and a polyacrylamide product disclosed by the invention can generate a good flocculating settling effect on pollutants in different kinds of sewage, reduces selectivity, has wider application field range, and is greatlyreinforced in salt resistance and strong acid resistance.

Description

technical field [0001] The invention relates to the technical field of polyacrylamide, in particular to a cationic polyacrylamide and a preparation method thereof. Background technique [0002] Cationic polyacrylamide is a linear polymer compound, because it has a variety of active groups, it can be affinity and adsorb with many substances to form hydrogen bonds. Flocculation of negatively charged colloids has the functions of turbidity removal, decolorization, adsorption, and adhesion. It is suitable for dyeing, papermaking, food, construction, metallurgy, mineral processing, coal powder, oil fields, aquatic product processing and fermentation and other industries with high organic colloid content. It is especially suitable for the dehydration treatment of urban sewage, municipal sludge, paper sludge and other industrial sludge. [0003] The cationic polyacrylamide products currently on the market are very selective for the substances in the treated sewage, but have weak f...

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): C08F220/56C08F220/34
CPCC08F220/56C08F220/34
Inventor 张淑贞
Owner 张淑贞