Nanometer calcium carbonate composite concentrated master batch and preparation method thereof

A nano-calcium carbonate and masterbatch technology, applied in the field of plastics, can solve the problems that the properties of nanoparticles cannot be fully exerted, reduce the aggregation of nanoparticles, and fail to achieve complete depolymerization, etc., and achieve unique nano-size effects and strong interface bonding characteristics , Avoid poor surface treatment, improve product quality

Active Publication Date: 2014-02-12
SHANXI XINTAI HENGXIN NANO MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This requires secondary surface treatment of nano-calcium carbonate. Patent 200710017291.5 does not clearly propose a specific method for secondary deagglomeration of nanoparticles, but only reduces the agglomeration of nanoparticles through secondary surface treatment, and does not achieve complete deagglomeration. The unique properties of nanoparticles cannot be fully exerted, and the nano powder must be dried, which is cumbersome to operate, consumes energy, and increases costs.

Method used

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  • Nanometer calcium carbonate composite concentrated master batch and preparation method thereof
  • Nanometer calcium carbonate composite concentrated master batch and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1 Each serving is 1g

[0034] A kind of nano-calcium carbonate composite concentrated masterbatch, made of the following raw materials in parts by weight: 40 parts of carrier resin, 20 parts of nano-calcium carbonate, 1 part of coupling agent, 2.5 parts of dispersant, 1.5 parts of lubricant; wherein, the The carrier resin described above is metallocene polyethylene, and the metallocene polyethylene is specifically composed of 15 parts of metallocene polyethylene with a melting index of 1-2 g / 10min and 25 parts of metallocene polyethylene with a melting index of 20-50 g / 10min. metal polyethylene, the nano-calcium carbonate is nano-calcium carbonate with a particle size of 15 to 40nm, the coupling agent is an amphiphilic coupling agent, and the dispersant is composed of 1.5 parts of low molecular weight polyethylene wax and 1 1 part of stearic acid, and the lubricant is composed of 1 part of paraffin and 0.5 part of bright lubricant.

[0035] The preparation meth...

Embodiment 2

[0040] Example 2 Each portion is 1kg

[0041] A kind of nano-calcium carbonate composite concentrated masterbatch, made of the following raw materials in parts by weight: 30 parts of carrier resin, 60 parts of nano-calcium carbonate, 1.5 parts of coupling agent, 1 part of dispersant, 1.2 parts of lubricant; wherein, the The carrier resin described above is metallocene polyethylene, and during specific implementation, the metallocene polyethylene is composed of 10 parts of metallocene polyethylene with a melting index of 1-2 g / 10min and 20 parts of metallocene polyethylene with a melting index of 20-50 g / 10min. Composed of polyethylene, the nano-calcium carbonate is nano-calcium carbonate with a particle size of 15 to 40nm, the coupling agent is an amphiphilic coupling agent, the dispersant is low molecular weight polyethylene wax, and the lubricant For bright lubricant.

[0042] The preparation method of above-mentioned nano-calcium carbonate composite concentrated masterbatc...

Embodiment 3

[0047] Embodiment 3 Each portion is 500g

[0048] A kind of nano-calcium carbonate composite concentrated masterbatch, made of the following raw materials in parts by weight: 30 parts of carrier resin, 60 parts of nano-calcium carbonate, 1.5 parts of coupling agent, 1 part of dispersant, 1.2 parts of lubricant; wherein, the The carrier resin is polyethylene, the nano-calcium carbonate is 15-40nm nano-calcium carbonate, the coupling agent is an amphiphilic coupling agent, the dispersant is stearic acid, and the lubricating agent is stearic acid. The agent is paraffin.

[0049] The preparation method of above-mentioned nano-calcium carbonate composite concentrated masterbatch, comprises the steps:

[0050] 1) Weigh each raw material according to the weight and part of each raw material for subsequent use;

[0051] 2) Add nano-calcium carbonate and coupling agent to the high-speed mixer and stir for 2 minutes, then add dispersant and continue stirring for 3 minutes, then add lu...

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Abstract

The invention relates to a nanometer calcium carbonate composite concentrated master batch and a preparation method thereof. The concentrated master batch is prepared from 15 to 40 parts of carrier resin, 20 to 80 parts of nanometer calcium carbonate, 1 to 3 parts of a coupling agent, 1 to 3 parts of a dispersing agent and 1.5 to 3.5 parts of a lubricating agent. During preparation, the prepared raw materials are mixed by a high-speed mixing machine and subjected to banburying by an internal mixer sequentially, and then are fed into a single (double) screw extruder by a feeding machine and extruded to prepare the concentrated master batch. The nanometer calcium carbonate composite concentrated master batch prepared by the invention can greatly reduce the product cost and improve the product quality, has high compatibility, can improve the flowability, as well as the dimensional stability and the heat resistance of the product, has an anti-ageing effect, and can effectively improve the rigidity, the toughness, the bending modulus, the surface finish quality and the like of the material.

Description

technical field [0001] The invention relates to the technical field of plastics, in particular to a nano-calcium carbonate composite concentrated masterbatch and a preparation method thereof. Background technique [0002] Calcium carbonate is the most widely used and the largest amount of inorganic filler in plastic filling modification, and its application trend has developed from the direction of heavy weight, activation, ultra-fine, and masterbatch. Its nano-material is a new type of material developed in the 1980s with very broad application prospects, especially nano-calcium carbonate is the most valued nano-material in the plastics industry, but the particle size of nano-calcium carbonate is small, it has a very small specific surface area and high Specific surface energy, particle agglomeration easily occurs during the preparation and post-treatment process, forming secondary particles, making the particle size larger, and losing the function of ultra-fine particle si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08K13/06C08K9/04C08K3/26C08K5/09C08K5/01C08J3/22B29B9/06
CPCB29B9/06C08K2201/003C08K2201/011C08L23/06C08L23/12C08L2201/08C08L2205/025C08L2205/03C08L2205/035C08L91/06C08K9/00C08K2003/265
Inventor 吕国章韩国芳杨芮平
Owner SHANXI XINTAI HENGXIN NANO MATERIALS TECH CO LTD
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