无机盐对窄分布醇醚羧酸盐性能影响

doi:10.3969/j.issn.1001-1803.2020.02.004

摘要/Abstract

摘要：

研究了无机盐（NaCl、CaCl₂、MgCl₂、KCl、NH₄Cl、ZnCl₂）对氧化法窄分布醇醚羧酸钠（NAEC3/5/7/9）（EO加合数3/5/7/9）水溶液表面张力、润湿、泡沫、乳化、去污、缓蚀性能的影响。结果表明,无机盐对NAEC性能影响显著。无机盐均显著降低了体系的表面张力,二价盐降低幅度大于一价盐;无机盐加入均能增强对帆布片的润湿作用,CaCl₂及ZnCl₂增强作用最强,尤其是ZnCl₂可以将NAEC9润湿时间由不润湿缩短至173 s;除CaCl₂能够显著增强发泡性和稳泡性外,其他氯盐均加快了泡沫的破灭;其中NH₄Cl对大豆油乳化作用破坏最为显著;无机盐的加入对炭黑及皮脂污渍去除不利,有利于蛋白污渍的去除;对于不同EO数NAEC,0.2%的CaCl₂加入量可使NAEC5润湿时间由27 s缩短至5 s。

关键词: 窄分布醇醚羧酸盐, 无机盐, 性能, 增效作用

Abstract:

The effect of inorganic salt （NaCl, CaCl₂, MgCl₂, KCl, NH₄Cl, ZnCl₂） on the surface tension, wettability, foam, emulsification, decontamination and corrosion inhibition performance of narrow distribution alcohol ether carboxylate sodium （NAEC, EO number 3/5/7/9） aqueous solution were investigated. The results show that the inorganic salts have a significant influence on NAEC property. Inorganic salts significantly reduced the surface tension, and divalent salt had a better reduction effect than monovalent salt. The addition of inorganic salt could enhance the wetting effect on canvas, and the enhancement effect of CaCl₂and ZnCl₂was the strongest. In particular, ZnCl₂shortened the wetting time of NAEC9 from non-wetting to 173 s. Except for CaCl₂, which significantly enhanced foaming and foam stability, other chloride salts accelerated the collapse of the foam. NH₄Cl had the most significant effect on the emulsification of soybean oil. Inorganic salts were not good for the removal of black carbon and sebum stains, but good for the removal of protein stains. For NAEC5 with different EO numbers, the addition of 0.2% CaCl₂ reduced the wetting time from 27 s to 5 s.

Key words: NAEC, inorganic salt, performance, synergy effect

中图分类号:

TQ423.99

徐福利,张威,王丰收. 无机盐对窄分布醇醚羧酸盐性能影响[J]. 日用化学工业, 2020, 50(2): 92-97.

XU Fu-li,ZHANG Wei,WANG Feng-shou. Effect of inorganic salt on the properties of narrow distribution alcohol ether carboxylate[J]. China Surfactant Detergent & Cosmetics, 2020, 50(2): 92-97.

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无机盐	γ/（mN·m^-1）	t（润湿）/s	V（泡沫）/mL
无机盐	γ/（mN·m^-1）	t（润湿）/s	30 s	3 min	5 min
空白	44.7	10 min不润湿	300	210	150
NH₄Cl	39.7	10 min不润湿	350	80	50
NaCl	40.8	10 min不润湿	270	40	5
KCl	41.1	10 min不润湿	250	40	5
MgCl₂	37.8	10 min不润湿	350	100	50
CaCl₂	35.8	10 min不润湿	400	230	150
ZnCl₂	34.5	173	30	0	0

无机盐	R
无机盐	JB-01	JB-02	JB-03
空白	14.06	4.97	15.12
NH₄Cl	12.69	6.25	14.10
NaCl	8.98	5.49	13.90
KCl	12.62	5.46	13.73
CaCl₂	12.18	4.48	9.91
ZnCl₂	11.54	4.06	8.03

无机盐	m（失重量）/g	f_i /%
空白	0.156 2	/
无盐	0.045 2	71.1
NH₄Cl	0.043 0	72.5
NaCl	0.045 9	70.6
KCl	0.041 0	73.8
MgCl₂	0.039 3	74.8
CaCl₂	0.048 8	68.8
ZnCl₂	0.044 0	71.6

样品	t（空白）/s	w（CaCl₂）/%	t（润湿）/s
NAEC9	10 min未润湿	1	10 min未润湿
NAEC7	10 min未润湿	1	42
NAEC5	27	1	4
NAEC5	27	0.2	5