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Modified PETG material with multilayer structure and preparation method of modified PETG material

A multi-layer structure and modification technology, applied in chemical instruments and methods, layered products, flat products, etc., can solve problems such as unfavorable PETG multilayer structure preparation, unfavorable preparation performance, unfavorable compound modification of PETG and other materials, etc. , to achieve the effect of improving degradable performance, improving environmental protection performance, and reducing production difficulty

Pending Publication Date: 2021-06-25
HUIZHOU HAOMING SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when PETG material is applied to label film, although it has the advantages of non-toxicity, excellent shrinkage rate and mechanical properties, due to the low viscosity of PETG melt, it is not conducive to the preparation of PETG multilayer structure, and it is not conducive to the combination of PETG and other materials. Compound modification is not conducive to the preparation of multi-layer PETG materials with better performance and more production needs. At the same time, as people pay more and more attention to the environment and focus on green development, and when PETG materials are used in label films, The use and replacement are fast, and people's requirements for the environmental protection of PETG materials are getting higher and higher. Therefore, it is necessary to study an easy-to-process and environmentally friendly PETG material.

Method used

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  • Modified PETG material with multilayer structure and preparation method of modified PETG material
  • Modified PETG material with multilayer structure and preparation method of modified PETG material

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Experimental program
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Effect test

Embodiment approach

[0028] In one embodiment, a modified PETG material with a multi-layer structure includes a PP layer and two modified PETG layers, and the PP layer is arranged between the two modified PETG layers.

[0029] It should be noted that, by setting a PP layer and two modified PETG layers, a modified PETG material with a multilayer structure is formed. Specifically, the PP layer is arranged as an inner layer between the two modified PETG layers, and the two modified PETG layers PETG is set as the surface layer on the two sides of the PP layer respectively, and the two modified PETG materials are arranged symmetrically to obtain a multi-layer modified PETG material with good shrinkage performance and mechanical properties. PP is a semi-crystalline thermoplastic. It has high impact resistance, strong mechanical properties, and good corrosion resistance. The PP layer is placed between two modified PETG layers, which is conducive to obtaining a multi-layer structure modified PETG material ...

Embodiment 1

[0050] Add PETG, silicon dioxide, toluene diisocyanate, ethylene-propylene rubber and bamboo powder into the reaction kettle in proportion, carry out stirring and mixing operation, and then carry out extrusion granulation operation through an extruder to obtain PETG pellets;

[0051] Using 200,000 Ci 60 The Co-γ-ray source irradiates the PETG pellets at a dose rate of 50Gy / min to obtain modified PETG pellets;

[0052] PP, triallyl isocyanurate, PP-g-MAH, PP-g-ST, PP-g-GMA, sorbitol-based polypropylene transparent nucleating agent, dodecylbenzenesulfonic acid Add sodium and carboxymethyl cellulose into the reaction kettle, perform stirring and mixing operation, and then perform extrusion granulation operation through an extruder to obtain PP pellets, wherein the PP-g-MAH, the PP-g- The mass ratio of ST and the PP-g-GMA is 1:1:1, and the mass ratio of the sodium dodecylbenzenesulfonate and the carboxymethyl cellulose is 0.75:1;

[0053] The modified PETG pellets and PP pellets...

Embodiment 2

[0055] Add PETG, silicon dioxide, toluene diisocyanate, ethylene-propylene rubber and bamboo powder into the reaction kettle in proportion, carry out stirring and mixing operation, and then carry out extrusion granulation operation through an extruder to obtain PETG pellets;

[0056] Using 200,000 Ci 60 The Co-γ-ray source irradiates the PETG pellets at a dose rate of 50Gy / min to obtain modified PETG pellets;

[0057] PP, triallyl isocyanurate, PP-g-MAH, PP-g-ST, PP-g-GMA, sorbitol-based polypropylene transparent nucleating agent, dodecylbenzenesulfonic acid Add sodium and carboxymethyl cellulose into the reaction kettle, perform stirring and mixing operation, and then perform extrusion granulation operation through an extruder to obtain PP pellets, wherein the PP-g-MAH, the PP-g- The mass ratio of ST and the PP-g-GMA is 1:1:1, and the mass ratio of the sodium dodecylbenzenesulfonate and the carboxymethyl cellulose is 0.75:1;

[0058] The modified PETG pellets and PP pellets...

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Abstract

A provided modified PETG material with a multilayer structure comprises a PP layer and two modified PETG layers, and each modified PETG layer comprises the following components in parts by mass: 82-88 parts of PETG, 1-2 parts of an anti-blocking agent, 2-3 parts of toluene diisocynate, 3-4 parts of a toughening agent and 0.5-1 part of bamboo powder; and the PP layer is prepared from the following components in parts by mass: 78 to 82 parts of PP, 5 to 8 parts of triallyl isocyanurate, 1 to 3 parts of a solubilizer, 1 to 3 parts of a nucleating agent and 0.5 to 1 part of a dispersing agent. Toluene diisocynate is added into the modified PETG layer, triallyl isocyanurate is added into the PP layer, the crosslinking-chain extension effect can be achieved, the viscosity of the modified PETG layer and the viscosity of the PP layer are improved, the modified PETG layer and the PP layer can be better combined together, and the bamboo powder is added, so that the environment-friendly performance of the modified PETG material of the multi-layer structure is greatly improved.

Description

technical field [0001] The invention relates to a polymer material, in particular to a modified PETG material with a multilayer structure and a preparation method thereof. Background technique [0002] PETG material is a kind of transparent plastic, which is an amorphous copolyester. The comonomer commonly used in PETG is polyethylene terephthalate-1,4-cyclohexanedimethylene ester, which is made of It is the polycondensation product of phthalic acid, ethylene glycol and 1,4-cyclohexanedimethanol by transesterification method. The performance of PETG is quite different from that of PET and PCT, and it has its uniqueness. Compared with PET and PCT , The transparency and gloss of PETG materials are significantly improved. PETG has the advantages of excellent comprehensive mechanical properties, transparency and hygiene, and is widely used, for example, in high-transparency bottle materials, plates, and label films. [0003] However, when PETG material is applied to label film,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/36B32B27/08B32B27/18C08L67/02C08L23/12C08L97/02C08L23/16C08K5/29C08K5/3492C08K3/36C08K3/26C08K3/34C08J5/18B29D7/01
CPCB32B27/32B32B27/36B32B27/08B32B27/18C08J5/18B29D7/01C08J2367/02C08J2323/12C08J2497/02C08J2423/16C08K5/29C08K5/34924C08K3/36C08K2003/265C08K3/34B32B2250/40B32B2307/716
Inventor 蒋友兵何振梅
Owner HUIZHOU HAOMING SCI & TECH
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