Preparation method of cross-linked polymer wax micropowder
A technology of cross-linking polymers and polymers, applied in applications, coatings, inks, etc., can solve the problems of wide molecular weight distribution, low hardness, low melting point, etc. Water repellency effect
Active Publication Date: 2013-06-26
NANJING TIANSHI NEW MATERIAL TECH
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The hardness of oxidized polyethylene wax is low, the melting point is low, and the molecular weight distribution is wide. It is not easy to prepare oxidized polyethylene wax micropowder by traditional technology, and the wear resistance is relatively poor after being prepared into micropowder.
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 moreExamples
Experimental program
Comparison scheme
Effect test
Embodiment 100
[0016] Example 100KG of newly cracked polyethylene wax melt was uniformly added to 5KG of oxidized polyethylene wax containing 1.5KG of A-151 silane on-line at a temperature of 225°C, stirred and mixed for 6 minutes to complete the grafting, and micronized to Dv50. Greater than 6um.
[0017] The micropowder was stirred for 2 hours in deionized water containing 0.1KG of butyl tin dimonthly silicate at a temperature of 50°C, and the crosslinking degree was checked after drying, and the gel rate was greater than 50%.
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
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
Login to View More
Abstract
The invention belongs to the technical field of polymeric material in fine chemicals, and relates to a preparation method of a cross-linked polymer wax. The method comprises the following steps: a. melting a polymer wax and grafting silane; b. carrying out micronization on the polymer grafted with the silane; c. obtaining a polymer wax micropowder with an average particle size between 1-50 [mu]m; besides, a crosslinking of a micronized graft polymer is finished in water. Before the crosslinking, the polymer wax micropowder prepared by the method is hydrophilic and is conducive to be added into a water-based paint ink; after the crosslinking, the polymer wax micropowder has good water repellency and a much higher molecular weight. Compared with oxidized polyethylene wax micropowder of prior art, the polymer wax micropowder has increased hydrophobicity, heat resistance, and environmental aging resistance, and is wear resistant and stain resistant as well.
Description
Technical field [0001] The invention belongs to the technical field of fine chemical polymer materials, and specifically relates to a preparation method of crosslinked polymer wax. Background technique [0002] Polyethylene wax powder is widely used in coatings and inks due to its excellent abrasion resistance and stain resistance. When used in water-based paint and ink, because polyethylene wax has no polarity, it is difficult to mix uniformly with water, and its use is restricted. In order to improve the affinity with the water phase, it can be easily added to the water-based paint ink. The polyethylene wax is usually oxidized to prepare oxidized polyethylene wax powder, or a surfactant is added for emulsification to prepare a polyethylene wax emulsion. These methods have more or less affected its role as a wax: the hardness and wear resistance of the oxidized polyethylene wax powder prepared after the polyethylene wax is oxidized are worse than that of the polyethylene wax po...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/24C08J3/12C08F255/02C08F289/00C09D151/06C09D151/00C09D11/00
Inventor 于天诗
Owner NANJING TIANSHI NEW MATERIAL TECH