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PET composite nucleating agent and preparation method thereof

A composite nucleating agent, nucleating agent technology, applied in the field of PET composite nucleating agent and its preparation, can solve the problems of low impact on PET degradation, general nucleation efficiency, and decreased elongation at break, and achieve high elongation at break efficiency, improved physical properties, increased crystallinity

Inactive Publication Date: 2019-05-14
GUANGZHOU HUAXINKE ENTERPRISE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Organic macromolecule nucleating agent, the nucleating effect is the best, such as polyester oligomers and ionic polymers, etc.; the elongation at break of PET is still significantly reduced, and the impact on PET degradation is low, but the nucleation efficiency is average

Method used

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  • PET composite nucleating agent and preparation method thereof
  • PET composite nucleating agent and preparation method thereof
  • PET composite nucleating agent and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0045] The present embodiment provides a kind of PET composite nucleating agent, and its raw material comprises by weight parts:

[0046] 20-40 parts of polymer sodium salt;

[0047] 3-10 parts of superfine talcum powder;

[0048] 25-45 parts of polyethylene glycol;

[0049] 20-40 parts of polycarbodiimide;

[0050] Wherein, the total content of all components is 100 parts.

[0051] The high molecular sodium salt is one of sodium taurocholate, sodium cholate, sodium pyrrole carboxylate and C20-C30 heterocyclic sodium carboxylate or a compound of any two.

[0052] Ultrafine talc powder is a compound of magnesia and silicon dioxide or a combination of two, and its mesh number is 5000-6000 mesh; when the ultrafine talc powder is a compound of magnesia and silicon dioxide, the oxidation The mass fraction of magnesium is 40-50%, and the mass fraction of silicon dioxide is 50-60%.

[0053] Polyethylene glycol (PEG) is polyethylene glycol, terephthalic acid modified polyethylene...

Embodiment 2

[0063] The difference between this embodiment and embodiment 1 is that: the nucleating agent raw material comprises by weight parts:

[0064] 30 parts of sodium taurocholate, 5 parts of talc powder (mesh 6000, magnesium oxide 50%), 35 parts of polyethylene glycol (molecular weight 12000), bis(4-phenoxy-2,6-diisopropyl 30 parts of phenyl) carbodiimide.

Embodiment 3

[0066] The difference between this embodiment and embodiment 1 is that: the nucleating agent raw material comprises by weight parts:

[0067] 30 parts of sodium pyrrole carboxylate, 5 parts of talc powder (mesh 6000, magnesium oxide 50%), 35 parts of polyethylene glycol (molecular weight 12000), bis(4-phenoxy-2,6-diisopropylbenzene base) 30 parts of carbodiimide.

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Abstract

The invention provides a PET composite nucleating agent, which comprises the following raw materials in parts by weight: 20-40 parts of high polymer sodium salt; 3-10 parts of superfine talcum powder;25-45 parts of polyethylene glycol; 20-40 parts of polycarbodiimide, wherein the total content of all components is 100 parts. The invention further provides a preparation method of the nucleating agent. The method can prepare a nucleating agent which has high nucleation efficiency and can improve the physical property and processing property of a PET material; the agent has good nucleation and growth conditions, on the one hand, the thermal crystallization temperature is significantly increased; on the other hand, the crystallinity is higher than that of the current conventional PET nucleating agent products; and by effectively introducing the talcum powder and the high polymer sodium salt to protect PET ester chain segments, not only the influence of PET intrinsic viscosity is reduced,but also PET retains higher elongation at break, and thus the application of PET materials in high-speed spinning, film blowing and other aspects is facilitated.

Description

technical field [0001] The invention relates to a PET composite nucleating agent and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (PET) is a thermoplastic material with excellent performance. It not only has good mechanical properties, excellent fatigue resistance and aging resistance, but also has good chemical stability, so it is widely used in automobiles. , home appliances and machinery industries. [0003] However, due to the benzene ring and short ester group on the PET main chain, the molecular chain is too rigid, and the crystallization speed is slow during injection molding and other processing processes, which limits the use of PET materials in the field of engineering plastics. In order to improve the processing performance of PET materials and increase the crystallization rate, the most effective way is to add nucleating agents. [0004] At present, there are three types of PET nucleating agents commonly used: inorganic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L71/02C08K13/02C08K3/22C08K3/36C08K5/29C08K5/098C08K5/42C08K5/3415
Inventor 余吕宏
Owner GUANGZHOU HUAXINKE ENTERPRISE
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