Lasting type anti-fogging polyolefin film master batch

A polyethylene film and anti-fogging technology, which is applied in the field of polyethylene resin composition, can solve the problems of anti-fogging agent loss, maintenance for about 3 to 10 months, and poor compatibility of anti-fogging agents, so as to improve the utilization efficiency and improve the effect of long-term anti-fog droplet 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. Under the continuous action of water, the anti-fogging agent will often be lost gradually Its function, its anti-fogging effect period can only last about 3 to 10 months, so the problem of fogging damage in the middle and late stages of polyethylene shed film is more prominent

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Preparation of mLLDPE-g-AM grafts: Prepare a mixed solution of 7 parts of acrylamide (AM) and 5 parts of xylene, then mix the mixed solution with 100 parts of mLLDPE at high speed for 5 minutes, and mix well Place the material in a closed container for 12 hours; then take 0.03 parts of DTBP and 0.1 part of acetone to prepare a mixed solution, then put the mixed solution and the placed mixture into a 10L high-speed mixer, and mix at a high speed for 5 minutes; finally mix well The material is added to the Φ67 twin-screw extruder, and the reaction temperature (°C) of each section of the screw is: 150, 155, 160, 170, 185, 190, 190, 180, 170; the melt grafting reaction is carried out, and after 7 minutes of reaction , extruded, cooled, and granulated to obtain mLLDPE-g-AM grafts (grafting rate: 1.4%).

[0047] (2) Preparation of diatomite / anti-fogging and dripping agent compound: According to the weight percentage of polyoxyethylene sorbitan monostearate (T-60), 25 part...

Embodiment 2

[0050] (1) Preparation of mLLDPE-g-AM graft: Same as Example 1.

[0051] (2) Preparation of diatomaceous earth / anti-fogging agent compound: Same as Example 1.

[0052] (3) Preparation of mLLDPE anti-fogging film masterbatch: put 100 parts of mLLDPE (HPR18H10AX) and 4 parts of mLLDPE-g-AM grafts with a graft rate of 1.4% into a 10-liter high-speed mixer, and Mix for 3 minutes; then add 7 parts of diatomaceous earth / polyoxyethylene sorbitan monostearate compound, 0.15 parts of antioxidant 1010, 0.15 parts of calcium stearate, and mix at high speed for 5 minutes; add the mixed material To the Φ67 twin-screw extruder, the reaction temperature (°C) of each section of the screw is: 160, 170, 180, 190, 200, 210, 200, 190, 180; after 4 minutes of reaction, extrude, cool, and granulate to obtain mLLDPE anti-fogging film masterbatch.

Embodiment 3

[0054] (1) Preparation of mLLDPE-g-AM graft: Same as Example 1.

[0055] (2) Preparation of diatomaceous earth / anti-fogging agent compound: Same as Example 1.

[0056] (3) Preparation of mLLDPE anti-fogging film masterbatch: put 100 parts of mLLDPE (HPR18H10AX) and 5 parts of mLLDPE-g-AM grafts with a graft rate of 1.4% into a 10-liter high-speed mixer, and Mix for 3 minutes; then add 9.0 parts of diatomaceous earth / polyoxyethylene sorbitan monostearate compound, 0.15 parts of antioxidant 1010, 0.15 parts of calcium stearate, and mix at high speed for 5 minutes; add the mixed material To the Φ67 twin-screw extruder, the reaction temperature (°C) of each section of the screw is: 160, 170, 180, 190, 200, 210, 200, 190, 180; after 4 minutes of reaction, extrude, cool, and granulate to obtain mLLDPE anti-fogging film masterbatch.

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Abstract

The present invention provides a polyethylene anti-fogging film master batch and a preparation method thereof. The polyethylene anti-fogging film master batch comprises, by weight of mLLDPE, (1) 100% of mLLDPE, (2) 5-15% of a diatomite / anti-fogging agent complex, and (3) 3-7% of an mLLDPE-g-AM graft. According to the present invention, with the diatomite and the mLLDPE-g-AM graft in the master batch, absorption, migration and slow-release channels for the dripping agent are easily formed so as to solve rapid migration and precipitation of the small molecule anti-fogging agent in the polyethylene greenhouse film and significantly increase utilization efficiency of the dripping agent; and the anti-fogging lasting period of the master batch can be prolonged to more than 50 months from about 3-10 months of the general inner addition type blow molding agricultural polyethylene greenhouse film, the anti-fogging performance of the agricultural polyethylene greenhouse film is significantly increased, and good market application prospects are provided.

Description

technical field [0001] The invention relates to a polyethylene resin composition, in particular to a polyethylene film masterbatch capable of significantly improving the anti-fogging effect and durability of a polyethylene shed film. Background technique [0002] At present, my country's plastic greenhouse film is mainly polyethylene greenhouse film, polyethylene has excellent cold resistance, dustproof, easy processing and other characteristics, but it is a hydrophobic resin, the surface tension of the film is relatively different from that of water Big. 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 existence of fog droplets will cause light s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/04C08L51/06C08K13/02C08K3/34C08K5/103C08F255/02C08F220/56C08J3/22B29B9/06
CPCB29B9/06B29C48/92B29C2948/92704C08F255/02C08L23/0815C08L2203/16C08L51/06C08K13/02C08K3/34C08F220/56
Inventor 徐典宏刘春芳姜平周雷史蓉王月霞翟云芳朱晶魏绪玲汤海鲲张元寿艾纯金
Owner PETROCHINA CO LTD
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