Lasting type anti-fogging polyethylene film master batch

A polyethylene film and anti-fog technology, applied in the field of polyethylene resin composition, can solve the problems of not meeting application requirements, poor film discharge, poor compatibility, etc., achieving a simple and easy preparation method and avoiding material slippage , Environmental pollution-free effect

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

AI Technical Summary

Problems solved by technology

Due to the poor compatibility between the anti-fogging agent and PE resin, the hydrophilic small-molecule anti-fogging agent has the problem of migration and precipitation inside the PE resin. Uneven distribution, resulting in poor non-drip persistence of polyethylene anti-fog dripping film, and the anti-fog dripping duration is usually only about 3 to 10 months, and sometimes even fails to meet the application requirements

Method used

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  • Lasting type anti-fogging polyethylene film master batch
  • Lasting type anti-fogging polyethylene film master batch
  • Lasting type anti-fogging polyethylene film master batch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Preparation of mLLDPE grafts: According to the weight percentage of mLLDPE, put 0.03 parts of DCP and 0.1 parts of acetone into a beaker and mix; then mix the mixed solution with 100 parts of mLLDPE (HPR18H10AX), 2.5 parts of methacrylic acid Put methyl ester (MMA) together in a 10L high-speed mixer, and mix at high speed for 3 minutes; finally, add the mixed material into the Φ67 twin-screw extruder, and the reaction temperature (°C) of each section of the screw is: 170, 175, 180 , 190, 200, 200, 195, 180, 175; after melt-grafting reaction for 6 minutes, extrude, cool, and granulate to obtain mLLDPE-g-MMA grafts (grafting rate: 0.7%).

[0046] (2) Preparation of mLLDPE anti-fogging film masterbatch: put 100 parts of mLLDPE (HPR18H10AX) and 1.2 parts of mLLDPE-g-MMA graft (grafting rate: 0.7%) into a 10-liter high-speed mixer, Mix at high speed for 5 minutes; then add 5.5 parts of polyoxyethylene sorbitan monolaurate (T-20), 1.5 parts of polyvinyl alcohol, 0.1 part ...

Embodiment 2

[0048] (1) Preparation of mLLDPE-g-MMA graft: Same as Example 1.

[0049] (2) Preparation of mLLDPE anti-fogging film masterbatch: put 100 parts of mLLDPE (HPR18H10AX) and 1.4 parts of mLLDPE-g-MMA graft (grafting rate: 0.7%) into a 10-liter high-speed mixer, Mix at high speed for 5 minutes; then add 6.1 parts of polyoxyethylene sorbitan monolaurate (T-20), 1.7 parts of polyvinyl alcohol, 0.15 parts of antioxidant 1010, 0.15 parts of calcium stearate, and mix at high speed for 5 minutes; The mixed material is fed into the Φ67 twin-screw extruder, and the reaction temperature (°C) of each section of the screw is: 170, 180, 190, 200, 210, 220, 200, 190, 180; after 4 minutes of reaction, extrude and cool and granulation to obtain the mLLDPE anti-fogging film masterbatch.

Embodiment 3

[0051] (1) Preparation of mLLDPE-g-MMA graft: Same as Example 1.

[0052] (2) Preparation of mLLDPE anti-fogging film masterbatch: Put 100 parts of mLLDPE (HPR18H10AX) and 1.7 parts of mLLDPE-g-MMA graft (grafting rate: 0.7%) into a 10-liter high-speed mixer, Mix at high speed for 5 minutes; then add 6.7 parts of polyoxyethylene sorbitan monolaurate (T-20), 1.9 parts of polyvinyl alcohol, 0.15 parts of antioxidant 1010, 0.15 parts of calcium stearate, and mix at high speed for 5 minutes; The mixed material is fed into the Φ67 twin-screw extruder, and the reaction temperature (°C) of each section of the screw is: 170, 180, 190, 200, 210, 220, 200, 190, 180; after 4 minutes of reaction, extrude and cool and granulation to obtain the mLLDPE anti-fogging film masterbatch.

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Abstract

The present invention provides an anti-fogging polyethylene film master batch and a preparation method thereof. The anti-fogging polyethylene film master batch comprises, by weight of mLLDPE, (1) 100% of mLLDPE, (2) 1-4% of a water-soluble polymer, (3) 5-10% of an anti-fogging agent, and (4) 1-3% of an mLLDPE graft. According to the present invention, the metallocene linear low density polyethylene graft and the water-soluble polymer in the master batch are combined, such that the anti-fogging agent easily forms suitable absorption, migration and slow-release channels so as to achieve a slow migration rate, increase an anti-fogging agent utilization effect and prolong an anti-fogging period; and the master batch has good processability, and can be blended with the special greenhouse film resin according to any ratios so as to blow the wide greenhouse film, and the anti-fogging lasting period can be more than 30 months.

Description

technical field [0001] The invention relates to a polyethylene resin composition, in particular to a polyethylene film masterbatch which has excellent dispersibility and durability in polyethylene resins and significantly improves the anti-fogging effect on polyethylene films. 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 e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/04C08L51/06C08F255/02C08F220/06C08F220/14C08F220/18C08L29/04C08L39/06C08L39/08C08L71/08C08L33/26C08L33/02C08L33/14C08L71/02C08J3/22B29B9/06
CPCB29B9/06B29C48/92B29C2948/92704C08F255/02C08L23/0815C08L2203/16C08L2205/035C08L51/06C08L29/04C08L71/02C08L33/26C08F220/14C08F220/06
Inventor 徐典宏刘春芳张慧仪梁滔史蓉翟云芳朱晶魏绪玲周雷汤海鲲张元寿艾纯金王月霞
Owner PETROCHINA CO LTD
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