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A non-migrating hydrophilic anti-fog masterbatch for polyolefin film and its preparation

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 effects of long-lasting anti-fog effect, improved smoothness, and good anti-sticking performance

Active Publication Date: 2020-08-07
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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  • A non-migrating hydrophilic anti-fog masterbatch for polyolefin film and its preparation
  • A non-migrating hydrophilic anti-fog masterbatch for polyolefin film and its preparation
  • A non-migrating hydrophilic anti-fog masterbatch for polyolefin film and its preparation

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Embodiment

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

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

[0035] (2) Hydroxylate the surface of SiO 2 Dispersion in xylene under nitrogen protection according to the "quasi-one-step method", DMPA and surface hydroxylation of SiO 2According to the molar ratio of 1:1, it was added every 1 hour, and the reaction was carried out for 10 hours (the amount added each time was 1:1 in molar ratio). The reaction was stirred at the same temperature; after the reaction was stopped, the product was suction filtered, washed with xylene and anhydrous ethanol, and then placed ...

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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-fogging masterbatch, in particular to a non-migrating hydrophilic anti-fogging masterbatch for polyolefin films 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 shed film, and directly affect the growth of crops. The fog droplets falling on the plants will also cause the rot of the stems and leaves. Similarly, if polyolefin film is used in the field of food packaging, it will accelerate the decay and deterioration of fresh vegetables. [0003] At present, the anti-fogging technology of polyolefin film is mainly to hydrophilize the film, so that the water is evenly distributed on the surface of t...

Claims

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Application Information

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Patent Type & Authority Patents(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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