Long-acting polyolefin anti-fogging film master batch

An anti-fog droplet and anti-fog droplet agent technology, which is applied in the direction of fibrous fillers, inorganic pigment treatment, dyeing low molecular organic compound treatment, etc., can solve the problem that the long-lasting anti-fog droplet performance is not very ideal and maintains 3 to 10 months About one month, the loss of anti-fog drops, etc., to achieve the effect of improving anti-fog drop performance, improving compatibility, and increasing the duration of effect

Active Publication Date: 2014-02-12
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is not very ideal in terms of the long-term anti-fogging effect of the film and the initial anti-fogging performance. The small molecule anti-fogging agent has the problem of migration and precipitation inside the PE resin, and the anti-fogging agent is often lost gradually and loses its function. , its anti-fog droplet duration can only last about 3 to 10 months, so the problem of fog drop damage in the middle and late stages of polyethylene shed film use is more prominent

Method used

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  • Long-acting polyolefin anti-fogging film master batch
  • Long-acting polyolefin anti-fogging film master batch
  • Long-acting polyolefin anti-fogging film master batch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Preparation of modified diatomite: According to the weight percentage of diatomite, add 100 parts of diatomite and deionized water into the coagulation kettle at a volume ratio of 1:15, and mix at high speed for 20 minutes to prepare suspension solution; then take 3.5 parts of diethanolamine and ethanol to prepare a mixed solution with a weight ratio of 1:4; then place the mixed solution in a diatomite suspension solution, heat up to 80°C, and turn on the agitator to maintain a certain speed for reaction 100min, and finally obtained modified diatomite a through suction filtration, grinding, and vacuum drying.

[0047] (2) Preparation of EVA-g-BA grafts: Mix 4 parts of butyl acrylate (BA) with 100 parts of EVA resin at high speed for 5 minutes, then take 0.05 parts of DCP and 0.2 parts of acetone to prepare a mixed solution, and then Mix the mixed solution and the previous mixed material together at high speed for 5 minutes; place the mixed material in an airtight co...

Embodiment 2

[0050] (1) Preparation of modified diatomite: Same as Example 1.

[0051] (2) Preparation of EVA-g-BA graft: Same as Example 1.

[0052] (3) Preparation of EVA anti-fogging film masterbatch: 100 parts of EVA (LD358), 1.5 parts of EVA-g-BA grafts with a graft rate of 0.9%, 0.9 parts of modified diatomaceous earth a, 4.0 parts Fatty acid ethylene glycol ester, 0.2 part of antioxidant 1010, and 0.15 part of calcium stearate were put into a 10-liter high-speed mixer and mixed at high speed for 10 minutes; then the mixed material was added to the Φ67 twin-screw extruder, The reaction temperature (°C) of each section of the barrel is: 160, 170, 180, 190, 195, 200, 190, 185, 180; after 4 minutes of reaction, extrude, cool, and granulate to obtain the EVA anti-fogging film masterbatch.

Embodiment 3

[0054] (1) Preparation of modified diatomite: Same as Example 1.

[0055] (2) Preparation of EVA-g-BA graft: Same as Example 1.

[0056] (3) Preparation of EVA anti-fogging film masterbatch: 100 parts of EVA (LD358), 1.7 parts of EVA-g-BA grafts with a graft rate of 0.9%, 1.1 parts of modified diatomaceous earth a, 4.3 parts Fatty acid ethylene glycol ester, 0.2 part of antioxidant 1010, and 0.15 part of calcium stearate were put into a 10-liter high-speed mixer and mixed at high speed for 10 minutes; then the mixed material was added to the Φ67 twin-screw extruder, The reaction temperature (°C) of each section of the barrel is: 160, 170, 180, 190, 195, 200, 190, 185, 180; after 4 minutes of reaction, extrude, cool, and granulate to obtain the EVA anti-fogging film masterbatch.

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Abstract

The present invention provides a polyolefin anti-fogging film master batch and a preparation method thereof. The polyolefin anti-fogging film master batch comprises, by weight of EVA, (1) 100% of EVA, (2) 0.5-2.5% of modified diatomite, (3) 3-7% of an anti-fogging agent, and (4) 1-3% of an EVA-g-BA graft. According to the present invention, after diatomite in the master batch is subjected to surface modification through a polyol amine compound, occurrence of particle agglomeration can be hindered so as to easily disperse diatomite in the anti-fogging agent and significantly enhance an absorption effect of diatomite on the dripping agent; with the EVA-g-BA graft, uniform dispersion of the polyol fatty acid ester anti-fogging agent in the polyethylene greenhouse film resin is promoted, wettability of the film surface is significantly improved, and the utilization rate of the dripping agent is significantly increased, such that the anti-fogging lasting period of the polyethylene greenhouse film can be prolonged to more than 65 months from about 3-10 months, damage of fog drops on the polyethylene greenhouse film at the middle-later stage of use is solved, and good market application prospects are provided.

Description

technical field [0001] The invention relates to a polyolefin resin composition, in particular to an ethylene-vinyl acetate copolymer (EVA) anti-fog film masterbatch which can significantly improve the anti-fog durability and initial anti-fog effect of polyethylene shed film. Background technique [0002] At present, the plastic greenhouse film in my country is mainly polyethylene film. Polyethylene has excellent characteristics such as cold resistance, dust resistance, and easy processing, but it is a hydrophobic resin, and the surface tension of its film is quite different from that of water. . In early spring or late autumn, the temperature and humidity inside and outside the plastic greenhouse are quite different. After covering the greenhouse with ordinary film, when the surface temperature of the plastic film reaches below the dew point, the water vapor in the air will be saturated or supersaturated. The inner wall condenses into a large number of fog droplets. The exi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L51/06C08K9/04C08K3/34C09C1/28C09C3/08C08F255/02C08J3/22
CPCC08F255/026C08L23/06C08L23/0853C08L2203/16C08L2205/03C09C1/28C09C3/006C09C3/08C08L51/06C08K9/04C08K3/34C08F220/1804
Inventor 徐典宏付含琦姜平史蓉刘晓兰范国宁周雷王月霞翟云芳朱晶魏绪玲何连成
Owner PETROCHINA CO LTD
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