十三氟辛醇接枝改性三聚氰胺树脂的合成及其疏水性能

doi:10.3969/j.issn.1001-1803.2022.05.006

Abstract

Abstract:

An anhydrous method was developed for the polymerization of 1H,1H,2H,2H-Perfluoro-1-octanol （PF-OH） grafted melamine-formaldehyde （MF-F） resin aiming at improving the hydrophobic performance of MF material and widening its downstream application. The MF-F resins were characterized by FT-IR and solid state ¹³C NMR, and it is found that PF-OH is grafted in MF resin matrix. From the results of XPS, the migration and enrichment of the fluorine moieties toward the surface of the MF-F film are verified. The hydrophobicity and thermal stability of MF-F materials were investigated by contact angle and TG analysis. Due to the grafting of PF-OH, the water contact angles of MF-F films increase from 67.83° to 103.50° and the surface free energy reduce from 44.5 to 21.1 mN/m. Furthermore, the TG results show that MF-F materials still exhibit excellent thermal stabilities.

Key words: melamine-formaldehyde, graft, 1H,1H,2H,2H-Perfluoro-1-octanol, hydrophobicity, surface enrichment

CLC Number:

TQ322.4

Gao Yuyang,Liu Shaoying,Wang Qingyin,Wang Gongying. Preparation and hydrophobic properties of melamine-formaldehyde resin grafted by 1H,1H,2H,2H-Perfluoro-1-octanol[J].China Surfactant Detergent & Cosmetics, 2022, 52(5): 499-505.

Figures/Tables 12

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References 22

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溶剂	固含量/%	黏度/（mPa·s）	外观	储存期/天
DMF	60.31	2 517.6	白色粘稠液体（有分层）	>30
DMAc	60.59	3 602.8	白色粘稠液体	>30
DMSO	60.98	5 780.2	白色粘稠液体（有分层）	>21
NMP	60.77	15 624.0	白色粘稠液体	>14

样品	固含量/%	黏度/（mPa·s）	储存期/天
MF	58.5	3 868	>14
MF-F-1	61.0	3 401	>45
MF-F-2	63.0	3 023	>45
MF-F-3	67.7	2 901	>45
MF-F-4^①	59.6	2 850	>30
MF-F-5^①	58.9	2 801	>30

样品	元素含量/%				n（F）:n（C）	n（F）:n（C） ^②
样品	C	N	O	F	n（F）:n（C）	n（F）:n（C） ^②
MF	50.14	38.39	11.48	—	—	—
MF-F-1	47.74	34.33	11.62	6.31	0.13:1	0.02:1
MF-F-2	45.33	32.17	10.63	11.87	0.26:1	0.04:1
MF-F-3	43.22	22.25	10.85	23.68	0.55:1	0.06:1

样品	特定失重温度/℃			790 ℃时残留率/%
样品	T_{d, 5%}	T_dmax	T_{d, 80%}	790 ℃时残留率/%
MF	277.8	370.7	658.7	10.4
MF-F-1	269.7	366.5	675.3	12.4
MF-F-2	283.8	370.6	741.8	16.9
MF-F-3	278.5	374.7	766.5	18.9

Preparation and hydrophobic properties of melamine-formaldehyde resin grafted by 1H,1H,2H,2H-Perfluoro-1-octanol

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