Low-VOC lubricating agent doped with self-assembly core-shell inorganic particles and used for polyolefin and preparation method of low-VOC lubricating agent

An inorganic particle, core-shell type technology, applied in the production and processing of new polymer materials, can solve problems such as easy decomposition of volatile pollutants, improve processing rheological properties and lubricating properties, controllable porosity, The effect of large adsorption capacity

Active Publication Date: 2017-10-17
可赛成功(浙江)新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the high shear friction that occurs during the high-temperature molding process of the current polyolefin lubricant and the problem that volatile pollutants are easily decomposed by high-temperature heating, the present invention provides a doped self- Low-VOC lubricant for polyolefins assembled with core-shell inorganic particles and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] Preparation of inorganic adsorbent:

[0024] (1) Disperse silica hollow microspheres with a particle size of 0.5-1.5 μm in water 10-12 times the mass of silica to obtain a silica dispersion. Add 0.6mol / L polycation electrolyte polyacrylamine salt The salt solution is added dropwise into the silica dispersion, the amount of which is 20 to 50% of the volume of the silica solution, stirred and mixed, and left to stand for 3 to 5 hours. The positively charged polyacrylamine cations are adsorbed to the negative Charge the silica surface to realize the charge reversal on the silica surface and become positively charged, centrifuge, collect the precipitate, and redisperse the precipitate in water to obtain a modified silica solution;

[0025] (2) Add the titanium dioxide dispersion with a particle size of 20-50nm into the modified silica solution and stir evenly, and let it stand for 6-10 hours. Due to the electrostatic action, the titanium dioxide particles are adsorbed to th...

example 1

[0032]The low-VOC lubricant for polyolefin doped with self-assembled core-shell inorganic particles of the present invention includes the following raw materials in mass percentage: 10% of N,N'-ethylene bisstearamide, 0.5% of polypropylene wax, branched Polystyrene 5%, branched polystyrene molecular weight 15000, antioxidant 0.1%, antioxidant 1076, inorganic adsorbent 84.4%; the inorganic adsorbent is a self-assembled core-shell inorganic particle, The shell layer of the self-assembled core-shell inorganic particle is composed of titanium dioxide nanoparticles, and the core is composed of silicon dioxide hollow microspheres. The particle diameter of the titanium dioxide nanoparticle is 20 nm, and the outer diameter of the silicon dioxide hollow microspheres is 0.5 μm.

[0033] The preparation of the low-VOC lubricant for polyolefin doped with self-assembled core-shell inorganic particles of the present invention comprises the following preparation steps:

[0034] (1) The raw m...

example 2

[0039] The low-VOC lubricant for polyolefin doped with self-assembled core-shell inorganic particles of the present invention includes the following raw materials in mass percentage: 20% of N,N'-ethylene bisstearamide, 0.6% of polypropylene wax, branched Polystyrene 7.5%, branched polystyrene molecular weight 15000, antioxidant 0.3%, antioxidant 1076, inorganic adsorbent 71.6%; the inorganic adsorbent is a self-assembled core-shell inorganic particle, The shell layer of the self-assembled core-shell inorganic particle is composed of titanium dioxide nanoparticles, and the core is composed of silicon dioxide hollow microspheres. The particle diameter of the titanium dioxide nanoparticle is 35 nm, and the outer diameter of the silicon dioxide hollow microspheres is 1.0 μm.

[0040] The preparation of the low-VOC lubricant for polyolefin doped with self-assembled core-shell inorganic particles of the present invention comprises the following preparation steps:

[0041] (1) Take r...

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Abstract

The invention relates to a low-VOC lubricating agent doped with self-assembly core-shell inorganic particles and used for polyolefin and a preparation method of the low-VOC lubricating agent and belongs to the field of production and processing of novel high polymer materials. The preparation method aims to solve the problems that high-shear friction occurs and volatile pollutants are easily decomposed due to high-temperature heating during the high-temperature forming process of the lubricating agent for the polyolefin and is characterized in that the electrostatic layer-by-layer self-assembly technique is used to prepare the core-shell inorganic particles with high adsorption performance, shell layer thickness and shell layer particle pores can be controlled, and the core-shell inorganic particles are compounded with other auxiliaries to prepare the low-VOC efficient lubricating agent. The lubricating agent prepared by the method has the advantages that the lubricating agent can greatly improve processing rheological properties and lubricating properties during the high-temperature forming of polymer polyolefin materials, and VOC content can be lowered to below 120 microgram C / g.

Description

technical field [0001] The invention relates to a low-VOC lubricant for polyolefin doped with self-assembled core-shell inorganic particles and a preparation method thereof, belonging to the field of production and processing of new polymer materials. Background technique [0002] Lubricant is an important processing aid in the molding and processing of polymer materials. Its function is to endow polymer materials with lubricity, reduce harmful friction, promote melt flow, improve processing efficiency and enhance the surface gloss of products. There are many types of lubricants used in China, from natural substances such as paraffin, mineral oil, animal and vegetable oils to synthetic compounds such as fatty acids and their esters, fatty acid amides, metal soaps, paraffin hydrocarbons, and organosilicon, which are widely used in rigid PVC , polyolefin, polystyrene, ABS, polyamide and rubber and other polymer materials molding processing. [0003] The currently reported pat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L23/12C08K13/06C08K5/20C08K9/10C08K9/04C08K9/12C08K3/22C08K7/26C08K5/134B29B9/02B29C47/92C08J3/22B29C48/92
CPCB29B9/02B29C48/92B29C2948/92704C08J3/226C08J2323/12C08J2425/06C08K2003/2241C08K2201/003C08K2201/011C08L23/12C08L25/06C08K13/06C08K5/20C08K9/10C08K9/08C08K9/12C08K3/22C08K7/26C08K5/1345
Inventor 胡贵安宋昊
Owner 可赛成功(浙江)新材料科技有限公司
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