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A kind of preparation method of environment-friendly packaging material

A packaging material and environment-friendly technology, applied in the field of packaging material preparation, can solve the problems of poor buffer performance, unsuitable matching, slow foam curing, etc., and achieve excellent cell structure, reduce closed-cell phenomenon, and improve shrinkage. Effect

Active Publication Date: 2020-01-14
深圳市同颖环保包装科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polyether used in this invention is common polyether, activity is not high, and its miscibility with water is poor, and foam ripening is slow
The stannous octoate catalyst used was actually tested and found to be unsuitable for matching with water
In addition, polyester and polyether are selected with high hydroxyl value, although it is beneficial to improve strength and load-bearing capacity, but the corresponding cushioning performance will be deteriorated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of environment-friendly packaging material, its preparation process is:

[0032] (1) Preparation of component A: 80 parts by mass of diphenylmethane diisocyanate, 20 parts by mass of propylene oxide-ethylene oxide copolyether triol (primary hydroxyl content 70%) with a relative molecular weight of 8000, and potassium acetate 1 mass part of ethylene glycol solution was reacted at 85°C for 3 hours, then the temperature was raised to 110°C, and the reaction was continued for 2 hours to obtain component A;

[0033] (2) Preparation of component B: 60 parts by mass of propylene oxide-ethylene oxide copolyether triol (primary hydroxyl content 70%) with a relative molecular weight of 8000 and 10 parts by mass of phthalic anhydride polyester triol with a relative molecular weight of 5000 5 parts by mass of cyclopentane, 5 parts by mass of water, 1 part by mass of L-6988 and 2 parts by mass of L-3415, 1 part by mass of dimethylcyclohexylamine, 1 part by mass of pentamethyl...

Embodiment 2

[0037] A kind of environment-friendly packaging material, its preparation process is:

[0038] (1) Preparation of component A: 90 parts by mass of diphenylmethane diisocyanate, 30 parts by mass of propylene oxide-ethylene oxide copolyether triol (primary hydroxyl content 80%) with a relative molecular weight of 6000, and potassium acetate 1 mass part of ethylene glycol solution was reacted at 85°C for 3 hours, then the temperature was raised to 110°C, and the reaction was continued for 2 hours to obtain component A;

[0039](2) Preparation of component B: Take 60 parts by mass of propylene oxide-ethylene oxide copolyether triol (primary hydroxyl content 80%) with a relative molecular weight of 6000, and 20 parts by mass of phthalic anhydride polyester triol with a relative molecular weight of 6000 8 parts by mass of cyclopentane, 2 parts by mass of water, 1 part by mass of L-6988 and 2 parts by mass of L-3415, 1 part by mass of dimethylcyclohexylamine, 1 part by mass of pentam...

Embodiment 3

[0043] A kind of environment-friendly packaging material, its preparation process is:

[0044] (1) Preparation of component A: 80 parts by mass of diphenylmethane diisocyanate, 20 parts by mass of propylene oxide-ethylene oxide copolyether triol (primary hydroxyl content 80%) with a relative molecular weight of 6000, and potassium acetate 1 mass part of ethylene glycol solution was reacted at 85°C for 3 hours, then the temperature was raised to 110°C, and the reaction was continued for 2 hours to obtain component A;

[0045] (2) Preparation of component B: take 50 parts by mass of propylene oxide-ethylene oxide copolyether triol (primary hydroxyl content 80%) with a relative molecular weight of 6000, and 20 parts by mass of phthalic anhydride polyester triol with a relative molecular weight of 6000 Parts, 10 parts by mass of cyclopentane, 2 parts by mass of water, 1 part by mass of L-6988 and 2 parts by mass of L-3415, 1 part by mass of dimethylcyclohexylamine, 1 part by mass ...

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Abstract

The invention relates to a preparation method of an environmentally-friendly packaging material. The preparation method comprises the following steps: firstly preparing component A by diphenylmethanediisocyanate, high-activity polyether polyol and a glycol solution of potassium acetate, then preparing a component B by high-activity polyether polyol, phthalic anhydride polyester polyol, cyclopentane, water, a foam stabilizer, dimethyl cyclohexylamine and pentamethyl diethylenetetramine and reacting the component A and the component B to obtain the packaging material. The obtained packaging material has mechanical strength and buffer performance.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to a preparation method of a packaging material with good environmental performance and taking into account both mechanical strength and cushioning performance. Background technique [0002] During the transportation of instruments and equipment, in order to prevent them from being damaged, it is often necessary to use packaging materials with cushioning effects. The more commonly used packaging materials are metal, paper, expanded polystyrene plastic, polyurethane plastic, etc. Metal packaging is expensive, heavy, and has poor cushioning performance. If the instrument or equipment collides with it, due to its lack of cushioning toughness, it will also cause damage to the instrument and equipment. The strength of paper packaging materials is not enough. In addition, paper packaging will waste a lot of paper, and the raw material of paper is mainly wood. Therefore, excessive use o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/76C08G18/48C08G18/42C08G18/10C08G18/08C08J9/14C08J9/08
CPCC08G18/10C08G18/1808C08G18/1816C08G18/4208C08G18/4829C08G18/7671C08J9/08C08J9/141C08J2203/02C08J2203/14C08J2375/08C08G18/48C08G18/42
Inventor 童慧
Owner 深圳市同颖环保包装科技有限公司