Ultraviolet-resistant polyethylene composite material as well as preparation method and application thereof
A technology of anti-ultraviolet and composite materials, applied in the field of polyethylene composite materials, can solve the problems of insufficient anti-ultraviolet radiation, poor anti-ultraviolet effect, poor anti-aging performance, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0030] Step 1, the preparation of benzotriazole derivatives: add o-nitroaniline, concentrated hydrochloric acid and water in the reaction kettle, stir evenly, in the ice-salt bath, gradually add sodium nitrite saturated solution in 20min, until Stir until a clear solution is obtained by suction filtration to obtain a diazotization solution; add sodium hydroxide, sodium carbonate and water to the reaction kettle, stir evenly, then add an appropriate amount of aromatic organic compounds containing hydroxyl and amino groups, and dropwise within 20 minutes Remove the ice-salt bath from the above diazotization solution, stir at room temperature for 30 minutes, filter, wash with warm water until neutral, and obtain a dark red conjugate; add the above dark red conjugate, sodium hydroxide, and 95% ethanol to the reaction kettle , and then under normal temperature conditions, add hydrosulfite in batches, then raise the temperature to 60-70° C., and stir at constant temperature for 1-3 h...
Embodiment 1
[0039] Preparation of benzotriazole-acrylate polymers:
[0040] Step 1, the preparation of benzotriazole derivatives, add 1.0kg o-nitroaniline, 1.9L concentrated hydrochloric acid and 4L water in the reaction kettle, stir evenly, in the ice-salt bath, gradually add nitrous acid dropwise within 20min Sodium saturated solution until it is stirred to a clear solution, and the diazotization solution is obtained by suction filtration; add 0.15kg sodium hydroxide, 0.5kg sodium carbonate and 4L water into the reaction kettle, stir evenly, and then add 1.0kg of hydroxyl and amino Aromatic organic matter (o-aminophenol), and the above diazotization solution was added dropwise within 20 minutes, the ice-salt bath was removed, stirred at room temperature for 30 minutes, filtered, washed with warm water until neutral, and a dark red conjugate was obtained; Add the above-mentioned dark red coupling compound, sodium hydroxide, and 95% ethanol to the kettle, and then add 2.0kg of sodium dith...
Embodiment 2
[0046] On the basis of Example 1, prepare benzotriazole-acrylate polymer,
[0047] Preparation of Ultraviolet Resistant Polyethylene Composite
[0048] Step 3: In parts by weight, the following components are included: 75 parts of high-density polyethylene; 5 parts of anti-ultraviolet film-forming agent; 0.5 part of lubricant; 0.5 part of antioxidant. After the above components are mixed evenly, they are melted and extruded through a twin-screw extruder. The extrusion molding process conditions are as follows: the temperature of the first zone is 130°C, the temperature of the second zone is 250°C, the temperature of the third zone is 200°C, and the temperature of the fourth zone is 105 ℃, residence time 5min, pressure 20MPa.
[0049] All the other steps and components are the same as in Example 1.
PUM
| Property | Measurement | Unit |
|---|---|---|
| melting point | aaaaa | aaaaa |
| melting point | aaaaa | aaaaa |
| degree of polymerization | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More