Supercharge Your Innovation With Domain-Expert AI Agents!

Preparing method and application of calcium carbonate dispersing agent for PVC sectional material

A technology of calcium carbonate and dispersant, which is applied in the field of calcium carbonate dispersant to achieve the effect of increasing filling amount, high dispersion efficiency and improving dispersibility

Active Publication Date: 2017-01-04
WUHU HONGMA NEW MATERIAL
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Polycarboxylate polymer surfactants are used as cement water reducing agents to greatly increase the strength of cement and greatly improve the construction performance. It is a hot research topic in recent years. However, adding such polymer dispersants to the processing of PVC profiles , to improve the dispersion of fillers and components, which has not been reported so far

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
  • Preparing method and application of calcium carbonate dispersing agent for PVC sectional material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In a 1000ml four-necked flask equipped with an electric stirrer, a spherical condenser and a thermometer, add 20g of allyl polyoxyethylene ether, 2g of sodium lauryl sulfate, 2g of OP-10 and 220g of water, then stir at a high speed For 30 minutes, heat to 90°C, slowly add dropwise a mixed solution of 120g methyl methacrylate and 20g butyl acrylate, 100g weight concentration of 20% methacrylic acid and 0.5% mercaptoacetic acid using a peristaltic pump under stirring The aqueous solution of composition, 50g weight concentration is the ammonium persulfate aqueous solution of 5%. The dropwise addition time is 3 hours. After the dropwise addition, keep at 95°C for 2 hours, and finally cool to room temperature, adjust the pH value to 7-8 with 30% sodium hydroxide by weight concentration, and use centrifugal spray drying to spray powder to obtain the product .

Embodiment 2

[0021] In a four-necked flask equipped with an electric stirrer, a spherical condenser, and a 1000ml thermometer, add 20g of allyl polyoxyethylene ether, 2g of sodium lauryl sulfate, 1g of OP-10 and 220g of water, then stir at high speed for 30 Minutes, heated to 90°C, and slowly added dropwise a mixed solution of 100g styrene and 25g butyl acrylate while stirring, and an aqueous solution composed of 20% acrylic acid and 0.5% thioglycolic acid with a weight concentration of 100g, 50g weight Concentration of 5% ammonium persulfate in water. The dropwise addition time is 3 hours. After the dropwise addition, keep at 95°C for 2 hours, and finally cool to room temperature, adjust the pH value to 7-8 with 30% sodium hydroxide by weight concentration, and use centrifugal spray drying to spray powder to obtain the product .

Embodiment 3

[0023] In a four-necked flask equipped with an electric stirrer, a spherical condenser, and a 1000ml thermometer, add 20g allyl polyoxyethylene ether, 2g sodium lauryl sulfate, 2g OP-10, 36g methyl methacrylate, 6g of butyl acrylate, 6g of methacrylic acid and 220g of water, then stirred at high speed for 30 minutes, heated to 90°C, slowly added 15g of ammonium persulfate aqueous solution with a weight concentration of 5% under stirring, and kept at 90°C after the solution turned blue After stirring for 30 minutes, the mixed solution of 84g methyl methacrylate and 14g butyl acrylate was slowly added dropwise using a peristaltic pump, the aqueous solution of 20% methacrylic acid and 0.5% mercaptoacetic acid in 70g weight concentration and the 35g weight concentration 5% ammonium persulfate in water. The dropping time is 3 hours. After the dropping is completed, keep at 95°C for 2 hours, and finally cool to room temperature, adjust the pH value to 7-8 with 30% sodium hydroxide b...

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 a preparing method and application of a calcium carbonate dispersing agent for a PVC sectional material. The preparing method comprises the steps of preparing an aqueous solution of 20-50% from 6-10 parts by weight of allyl polyoxyethylene ether with relative molecular weight of 500-1200 g / mol, 10-20 parts by weight of unsaturated carboxylic acid, 55-75 parts by weight of methyl methacrylate and 10-15 parts by weight of butyl acrylate; adding an emulgator, an initiator and a chain transfer agent for reaction at normal pressure under the protection of nitrogen, wherein reaction temperature is 80-90 DEG C, and reaction time is 5-8 h; regulating PH value to be 7-8 with alkali liquor, and conducting centrifugal spray drying to obtain the powdery product. The product can be directly applied to PVC sectional material production, the filler content of calcium carbonate in PVC can be increased on the premise that mechanical property and thermal property of the PVC sectional material are unchanged, and then the production cost of PVC products is reduced.

Description

technical field [0001] The invention relates to the technical field of a calcium carbonate dispersant, in particular to a preparation method and application of a calcium carbonate dispersant for PVC profiles. Background technique [0002] Calcium carbonate is the most commonly used filler in the production of PVC profiles. Adding calcium carbonate to plastics can improve the mechanical properties, thermal properties, hardness, toughness and surface processing properties of the products. At the same time, the price of calcium carbonate is low, which can greatly reduce the production of products. cost. However, since calcium carbonate is a hydrophilic inorganic compound, the surface contains a large number of hydroxyl structures, which makes the affinity between calcium carbonate and organic polymers poor, easy to agglomerate, and unevenly dispersed inside the PVC profile, resulting in interface defects in the PVC profile, reducing the The performance of PVC profiles, and wit...

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): C08F283/06C08F220/14C08F212/08C08L55/02C08L51/08C08K3/26
CPCC08F283/065C08L55/02C08F220/14C08F212/08C08L51/08C08K2003/265
Inventor 王响顾忠良吴鹏
Owner WUHU HONGMA NEW MATERIAL
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com