Non-migrating hydrophilic anti-fogging master batch for polyolefin film and preparation thereof

A non-migration, polyolefin technology, applied in the field of anti-fog masterbatch, can solve the problems of poor anti-fog effect and unsustainable anti-fog effect, and achieve the effect of lasting anti-fog effect, improving finish and good anti-fog performance

Active Publication Date: 2019-05-03
SHANTOU BEST SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Too little migration of small molecules will lead to poor anti-fog effect, and with the loss of anti-fog agent, the anti-fog effect will not last

Method used

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  • Non-migrating hydrophilic anti-fogging master batch for polyolefin film and preparation thereof
  • Non-migrating hydrophilic anti-fogging master batch for polyolefin film and preparation thereof
  • Non-migrating hydrophilic anti-fogging master batch for polyolefin film and preparation thereof

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Experimental program
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Effect test

Embodiment

[0033] A kind of preparation method of non-migratory hydrophilic anti-fog masterbatch for polyolefin film, such as figure 1 As shown, it mainly includes the following steps:

[0034] (1) SiO 2 Surface hydroxylation treatment: under the protection of nitrogen, add anhydrous toluene to reflux, and synthesize SiO 2 Activated at 260°C for 10h. And through the method of acid-base titration, it can be concluded that the number of hydroxyl groups on the surface of the activated silica has increased.

[0035] (2) Hydroxylation of the surface of SiO 2 Dispersed in xylene under nitrogen protection According to the "quasi-one-step method", DMPA and surface hydroxylated SiO 2Add once every 1 hour according to the molar ratio of 1:1, react for 10h, (the amount added each time is a molar ratio of 1:1), then add p-toluenesulfonamide with a content of 0.3% of the total amount of DMPA, and reflux at 150°C Stir the reaction at high temperature; after the reaction is stopped, filter the pro...

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Abstract

The invention relates to a non-migrating hydrophilic anti-fogging master batch for polyolefin film and a preparation thereof. The preparation mainly comprises: (1) SiO2 surface hydroxylation treatment; (2) using surface hydroxylated treated SiO2 as the reaction core, allowing carboxyl-containing and hydroxyl-containing functional monomer DMPA and the surface hydroxyl groups of SiO2 to perform condensation polymerization reaction to obtain hyperbranched polyester grafted modified SiO2; (3) use one of 6C to 18C hydroxyl-containing alkyl acyl chloride, 6C to 18C saturated long-chain alkanoic acidor epsilon-caprolactone to modify the hyperbranched polyester grafted modified SiO2obtained in step (2). The invention utilizes the hyperbranched polyester grafted modified SiO2, silica anti-stickingparticles are uniformly distributed on the surface of the film, the roughness of the film surface is improved to a certain extent, and the hydrophilic group can further reduce the contact angle of water mist, thereby synergistically playing a better anti-fogging effect, so that the non-migrating anti-fogging master batch of the invention has anti-sticking performance and anti-fogging performanceat the same time. The non-migrating hydrophilic anti-fogging master batch is especially suitable for the film which can not be corona treated but needs excellent anti-fogging effect.

Description

technical field [0001] The invention relates to the field of anti-fog masterbatch, in particular to a non-migrating hydrophilic anti-fog masterbatch for polyolefin film and its preparation. Background technique [0002] Since polyolefin resin is a hydrophobic substance, during the use of the film, when the surface temperature reaches below the dew point, the moisture in the air will condense into dew droplets and atomize. The existence of fog droplets will cause light scattering and reflection, reduce the light transmittance of the greenhouse film, directly affect the growth of crops, and the fog droplets falling on the plants will also cause the stems and leaves to rot. Similarly, if polyolefin film is used in the field of food packaging, it will accelerate the rot and deterioration of fresh vegetables. [0003] At present, the anti-fog technology of polyolefin film is mainly to hydrophilize the film, so that the water is evenly distributed on the surface of the film, so t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/00C08K9/04C08K3/36C08L23/12C08L23/06C08J3/22
Inventor 其乐莫格周慕纯刘小珊陈嘉欣
Owner SHANTOU BEST SCI & TECH
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