Preparation method of recyclable nanoparticle enhanced antistatic PET packaging material

A packaging material and nanoparticle technology, which is applied in the field of preparation of recycled nanoparticle-enhanced antistatic PET packaging materials, can solve the problems of antistatic agent loss, antistatic agent cannot be replenished in time, and difficulty in functioning, etc., to achieve good results The effect of antistatic effect

Pending Publication Date: 2022-05-13
苏州梅克兰循环科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To choose an antistatic agent, you must first consider its compatibility with the resin. If the compatibility between the two is too good, it will be difficult to migrate the antistatic agent molecules, and the antistatic agent lost on the surface of the material cannot be replenished in time, and it is difficult to play a role; and Poor compatibility makes processing difficult, the antistatic agent will be precipitated in large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method for recycling nanoparticle-enhanced antistatic PET packaging material, comprising the following steps:

[0025] S1. Terephthalic acid and ethylene glycol are esterified to generate ethylene terephthalate, wherein the molar ratio of terephthalic acid and ethylene glycol is 1:1.2;

[0026] S2. Dissolve glycerol in dimethyl sulfoxide, then add sodium bisulfate, add 3,4-dihydroxyphenylalanine, glycerol, 3,4-dihydroxyphenylalanine at 80°C The mol ratio of amino acid is 3:1, reacts 20h under nitrogen protection, after the reaction finishes, collects precipitation, obtains modified branching agent;

[0027] S3. the modified branching agent is dissolved in the cupric chloride solution, and the weight ratio of the modified branching agent to cupric chloride is 2:1 to obtain a metal complex branching agent;

[0028] S4. metal complex branching agent, glycerol is preheated, the glycerol that will preheat is added to the ethylene terephthalate prepared in step...

Embodiment 2

[0030] A preparation method for recycling nanoparticle-enhanced antistatic PET packaging material, comprising the following steps:

[0031] S1. Terephthalic acid and ethylene glycol are esterified to generate ethylene terephthalate, wherein the molar ratio of terephthalic acid and ethylene glycol is 1:2;

[0032] S2. Dissolve 3-hydroxymethylpropane in dimethyl sulfoxide, then add sodium bisulfate, add 3,4-dihydroxyphenylalanine, 3-hydroxymethylpropane, 3, The mol ratio of 4-dihydroxyphenylalanine is 8:1, reacts 30h under nitrogen protection, after the reaction finishes, collects precipitation, obtains modified branching agent;

[0033] S3. The modified branching agent is dissolved in the silver chloride solution, and the weight ratio of the modified branching agent to the silver chloride is 10:8 to obtain a metal complex branching agent;

[0034] S4. Preheat the metal complex branching agent, 3-methylol propane, and add the preheated 3-methylol propane to the ethylene terepht...

Embodiment 3

[0037] A preparation method for recycling nanoparticle-enhanced antistatic PET packaging material, comprising the following steps:

[0038] S1. Terephthalic acid and ethylene glycol are esterified to generate ethylene terephthalate, wherein the molar ratio of terephthalic acid and ethylene glycol is 1:1.5;

[0039] S2. Dissolve 3-hydroxymethylpropane in dimethyl sulfoxide, then add sodium bisulfate, add 3,4-dihydroxyphenylalanine, 3-hydroxymethylpropane, 3, The molar ratio of 4-dihydroxyphenylalanine is 4:1, and reacted for 25h under the protection of nitrogen, and after the reaction is finished, the precipitate is collected to obtain a modified branching agent;

[0040] S3. The modified branching agent is dissolved in the silver chloride solution, and the weight ratio of the modified branching agent to the silver chloride is 5:3 to obtain a metal complex branching agent;

[0041]S4. Preheat the metal complex branching agent, 3-methylol propane, and add the preheated 3-methyl...

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PUM

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Abstract

The invention provides a preparation method of a circulating nanoparticle enhanced antistatic PET packaging material. The preparation method comprises the following steps: S1, preparing ethylene glycol phthalate; s2, dissolving a multifunctional branching agent in dimethyl sulfoxide, then adding into sodium hydrogen sulfate, adding 3, 4-dihydroxyphenylalanine at a certain temperature, and reacting to obtain a modified branching agent; s3, dissolving the modified branching agent in a metal chloride solution to obtain a metal complexing branching agent; s4, preheating a metal complexing branching agent and a functional branching agent, adding the metal complexing branching agent and the functional branching agent into the ethylene glycol terephthalate prepared in the step S1, adding a thermal stabilizer, and reacting to obtain a metal-branched PET copolyester chip; and S5, processing the metal-branched PET copolyester chip into any form needing the PET packaging material. According to the invention, an antistatic agent does not need to be directly added, and metal is directly used as an effective component in a PET molecular chain, so that a lasting antistatic effect is achieved.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to a method for preparing a recycled nanoparticle-enhanced antistatic PET packaging material. Background technique [0002] Polyethylene terephthalate (PET) is a semi-crystalline polymer with relatively high melting temperature and glass transition temperature, and is widely used in fiber and non-fiber fields. An important application of PET in the non-fiber field is to make films, which are used as packaging materials for electronics, electrical appliances and other industries. [0003] Due to the insulating properties of PET itself, it is easy to generate and accumulate static electricity during contact and friction. The problem of static electricity has brought a lot of trouble to the processing and application of PET. The existence of static charge makes the surface of PET products easy to absorb dust during storage and use, which affects the appearance effect; when processi...

Claims

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Application Information

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IPC IPC(8): C08G63/685C08G63/78C08K3/04
CPCC08G63/6856C08G63/78C08K3/04
Inventor 周海明
Owner 苏州梅克兰循环科技有限公司
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