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CN-122011364-A - Fluorescent nylon material and preparation method and application thereof

CN122011364ACN 122011364 ACN122011364 ACN 122011364ACN-122011364-A

Abstract

The invention discloses a fluorescent nylon material, a preparation method and application thereof, relating to the technical field of polymer material preparation, the structural formula of the fluorescent nylon material comprises structural units derived from 1,3,6, 8-tetraminopyrene and structural units derived from nylon monomers. The fluorescent nylon material provided by the invention uses the monomer compound to copolymerize with the nylon Long Shanti, and the fluorescent compound can be uniformly dispersed in a nylon matrix, so that the fluorescent nylon material is endowed with fluorescent property. The fluorescent nylon material has the characteristics of high brightness, good stability, rich colors and the like, has the fluorescent quantum yield of more than 85 percent, has excellent fluorescent property, can emit vivid fluorescence under the excitation of ultraviolet light, and has physical and mechanical properties similar to those of common nylon. The fluorescent nylon material and the preparation method thereof provide new possibility for expanding the application of the nylon material in the special field.

Inventors

  • JI WENXI
  • Niu xinmiao
  • CHEN ERQIANG
  • LI JING
  • DONG MU
  • ZHANG LONGGUI
  • ZHANG YANFANG
  • CHENG XIAFEI
  • XU NING

Assignees

  • 中国石油化工股份有限公司
  • 中石化(北京)化工研究院有限公司

Dates

Publication Date
20260512
Application Date
20241111

Claims (12)

  1. 1. A fluorescent nylon material is characterized in that the structural formula of the fluorescent nylon material comprises a material derived from Structural units derived from nylon monomers.
  2. 2. The fluorescent nylon material of claim 1, wherein: in the fluorescent nylon material, the fluorescent nylon material is derived from The content of the structural unit of (2) is 0.005-5wt%, preferably 0.01-2wt%, more preferably 0.01-0.5wt%.
  3. 3. The fluorescent nylon material of claim 1, wherein: the structural unit derived from the nylon monomer has the structural formula: wherein R 1 、R 2 and R 3 may be the same or different, R 1 、R 2 and R 4 may be the same or different, R 3 and R 4 are different and each independently is one of an aromatic hydrocarbon group of C4-C18, a linear hydrocarbon group of C2-C18, a branched alkane group of C4-C18, x is more than or equal to 0 and less than or equal to 1, y is more than or equal to 0 and less than or equal to 1, z is more than or equal to 0 and less than or equal to 1, x+y+z=1, preferably, R 1 is one of- (CH 2 ) 4 -、-(CH 2 ) 6 -、-(CH 2 ) 10 ) -and/or, R 2 is one of- (CH 2 ) 2 -、-(CH 2 ) 4 -、-(CH 2 ) 8 ) -and/or, R 3 is- (CH 2 ) 5 -or- (CH 2 ) 10 -), and/or, R 4 is- (CH 2 ) 5 -or- (CH 2 ) 10 -.
  4. 4. A fluorescent nylon material according to any one of claims 1-3, characterized in that: The relative viscosity of the fluorescent nylon material is 1.6-4.0, preferably 2.2-3.0.
  5. 5. A method of preparing the fluorescent nylon material of any one of claims 1-4, the method comprising: the fluorescent nylon material is prepared by heating raw materials including a monomer compound, a nylon monomer, an optional initiator and/or an additive under a protective gas atmosphere to perform polymerization reaction and optional polycondensation reaction.
  6. 6. The method according to claim 5, wherein: The weight of the monomer compound is 0.01 to 10wt%, preferably 0.1 to 2wt%, more preferably 0.01 to 0.5wt% of the total weight of the monomer compound and nylon monomer, and/or, When included, the initiator is present in a weight ratio to nylon monomer of (0.001-20): 100, preferably (1-3): 100, and/or, When included, the weight ratio of the additive to nylon monomer is (0.01-10) 100, preferably (0.01-3) 100.
  7. 7. The method according to claim 5, wherein: The monomer compound is
  8. 8. The method according to claim 5, wherein: The nylon monomer is at least one of caprolactam, laurolactam, hexamethylenediamine, aminocaproic acid, aminoundecanoic acid, aminododecanoic acid, nylon 66 salt, nylon 610 salt and nylon 612 salt.
  9. 9. The method according to claim 5, wherein: The initiator is water.
  10. 10. The method according to claim 5, wherein: The additive is a maleic anhydride copolymer and/or a furfuryl anhydride copolymer, preferably a maleic anhydride copolymer, more preferably, the maleic anhydride copolymer is at least one of a maleic anhydride styrene copolymer, a maleic anhydride vinyl ether copolymer and a maleic anhydride olefin copolymer, and even more preferably, a maleic anhydride styrene copolymer and/or a maleic anhydride-1-hexene copolymer.
  11. 11. The method according to claim 5, wherein: The protective gas is nitrogen, and/or, The polymerization reaction has a reaction temperature of 180-260 ℃ and/or a reaction time of 0.5-7h and/or a reaction pressure of 0.1-20 atm and/or, The vacuum degree of the polycondensation reaction is below 200 Pa.
  12. 12. Use of a fluorescent nylon material according to any one of claims 1-4 or a fluorescent nylon material made by a method according to any one of claims 5-11 in a flexible display.

Description

Fluorescent nylon material and preparation method and application thereof Technical Field The invention relates to the technical field of preparation of high polymer materials, in particular to a fluorescent nylon material, and a preparation method and application thereof. Background The traditional nylon material does not generate fluorescent effect under the irradiation of ultraviolet light, so that the nylon material cannot be applied to certain special fields requiring fluorescent indication. Generally, a compound with fluorescent property is added into nylon resin, and the nylon material with fluorescent property is prepared through the process steps of melt blending, extrusion molding and the like. However, the blending method often has difficulty in obtaining a high dispersion effect, or the fluorescent compound is degraded and decomposed in the melt blending process. Since the fluorescence quantum yield of fluorescent nylon materials is generally affected by various factors, such as molecular structure, aggregation state, environmental conditions, and the like. Although there are some methods to enhance the fluorescence quantum yield of the fluorescent nylon material, for example, optimizing the molecular structure by designing the molecular structure with high fluorescence quantum yield, the fluorescence quantum yield of the fluorescent nylon material can be enhanced. For example, molecules with larger conjugated systems may be selected to increase the probability of electron transitions and the efficiency of fluorescence emission. The aggregation state is reduced-fluorescent nylon materials are generally prone to aggregation, which reduces the fluorescence quantum yield. In order to reduce the aggregation state, attempts may be made to use surfactants, polymer additives, or to change the synthesis conditions of the nylon material. The fluorescent quantum yield can be enhanced by adding the luminescent agent into the fluorescent nylon material. For example, rare earth elements or other luminescent agents with high fluorescence quantum yields may be added. Increasing the ambient temperature, which can promote the molecular movement of the fluorescent nylon material, thereby increasing the probability of electron transition and the efficiency of fluorescence emission. Changing the environmental conditions by changing the environmental conditions (e.g., humidity, pressure, atmosphere, etc.), the fluorescence quantum yield of the fluorescent nylon material can be affected. For example, the fluorescence quantum yield of a fluorescent nylon material may be increased under inert gas or low humidity conditions. However, no specific fluorescent nylon material has a high quantum yield. Disclosure of Invention In order to solve the problems in the prior art, the invention provides a fluorescent nylon material, and a preparation method and application thereof. The invention provides a blue-green light fluorescent nylon material with high quantum yield, which has excellent mechanical properties of nylon and can greatly meet the application of the nylon in flexible displays. One of the purposes of the invention is to provide a fluorescent nylon material. The structural formula of the fluorescent nylon material comprises a fluorescent nylon material derived fromStructural units derived from nylon monomers. In a preferred embodiment of the invention: in the fluorescent nylon material, the fluorescent nylon material is derived from The content of the structural unit of (2) is 0.005-5wt%, preferably 0.01-2wt%, more preferably 0.01-0.5wt%. In a preferred embodiment of the invention: the structural unit derived from the nylon monomer has the structural formula: Wherein R 1、R2 and R 3 may be the same or different, R 1、R2 and R 4 may be the same or different, R 3 and R 4 are different and each independently is one of an aromatic hydrocarbon group of C4-C18, a linear hydrocarbon group of C4-C18, a branched alkane group of C4-C18, x is more than or equal to 0 and less than or equal to 1, y is more than or equal to 0 and less than or equal to 1, z is more than or equal to 0 and less than or equal to 1, x+y+z=1, preferably, R 1 is one of- (CH 2)4-、-(CH2)6-、-(CH2)10) -and/or, R 2 is one of- (CH 2)2-、-(CH2)4-、-(CH2)8) -and/or, R 3 is- (CH 2)5 -or- (CH 2)10 -), and/or, R 4 is- (CH 2)5 -or- (CH 2)10 -. In a preferred embodiment of the invention: The relative viscosity of the fluorescent nylon material is 1.6-4.0, preferably 2.2-3.0. The second purpose of the invention is to provide a preparation method of the fluorescent nylon material. The preparation method of the fluorescent nylon material comprises the following steps: the fluorescent nylon material is prepared by heating raw materials including a monomer compound, a nylon monomer, an optional initiator and/or an additive under a protective gas atmosphere to perform polymerization reaction and optional polycondensation reaction. In a preferred embodiment of the invention: T