桐油基非离子型自乳化水性环氧固化剂的制备及性能

doi:10.3969/j.issn.0253-2417.2020.03.012

Abstract

Abstract:

The adduct of eleostearic acid methyl ester and maleic anhydride(TMA), was carried out the amidation reaction with triethylenetetra mine were performed to achieve polyamide curing agent derived from tung oil (TMAPA). Then, ring-opening addition of TMAPA with polyethylene glycol diglycidyl ether, followed by termination reaction between paraformaldehyde and primary amine, by which non-ionic waterborne epoxy curing agents derived from tung oil(TMAWCA) was obtained. The chemical structure of the intermediates and the targeted products were confirmed by Fourier transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance (¹H NMR). The result showed that the targeted products could emulsify hydrophobic liquid epoxy resin. It was found that the overall properties were best when the mass ratio of hydrophobic bisphenol F epoxy resin NPEF-170 and TMAWCA was 1.5:2 and the curing temperature was 25℃/4 h+60℃/4 h+80℃/2 h. The properties of the two-component film of NPEF-170/TMAWCA were as follows:adhesion level 1, flexibility 1 mm, pencil hardness H, impact resistance 50 kg/cm, water resistance>7 d, and water contact angle 85°.

Key words: adduct of eleostearic acid methyl ester and maleic anhydride, amidation reaction, non-ionic, waterborne epoxy curing agent, synthesis, performance

CLC Number:

TQ35

Xiaohua YANG,Haiyang DING,Shouhai LI,Lina XU,Yamei LIN,Mei LI. Preparation and Properties of Non-ionic Self-emulsified Waterborne Epoxy Curing Agents Derived from Tung Oil[J]. Chemistry and Industry of Forest Products, 2020, 40(3): 92-98.

Figures/Tables 11

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References 20

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配方 formula	m(WTE-51): m(TMAWCA)	m(NPEF-170): m(TMAWCA)	固化条件 curing conditions
1	1.5:2		25 ℃/4 h+60 ℃/4 h+80 ℃/2 h
2	1.5:2		25 ℃/7 d
3		1.5:2	25 ℃/4 h+60 ℃/4 h+80 ℃/2 h
4		1.5:2	25 ℃/7 d

m(WTE-51): m(TMAWCA)	外观 appearance	附着力/级 adhesivity	柔韧性/mm flexibility	抗冲击强度/(kg· cm^-1) impact strength		铅笔硬度 pencil hardness	耐水性(24 h) water resistance
m(WTE-51): m(TMAWCA)	外观 appearance	附着力/级 adhesivity	柔韧性/mm flexibility	10 ℃	25 ℃	铅笔硬度 pencil hardness	耐水性(24 h) water resistance
1.4:2	透明transparent	1	1	30	60	H	发白whitish
1.5:2	透明transparent	1	1	55	60	H	未发白non-whitish
1.6:2	透明transparent	3~4	2	30	60	H	发白whitish

配方 formula	外观 appearance	附着力/级 adhesivity	柔韧性/mm flexibility	抗冲击强度/ (kg· cm^-1) impact strength	铅笔硬度 pencil hardness	耐水性water resistance		T_g/℃
配方 formula	外观 appearance	附着力/级 adhesivity	柔韧性/mm flexibility	抗冲击强度/ (kg· cm^-1) impact strength	铅笔硬度 pencil hardness	24 h	7 d	T_g/℃
1	透明transparent	1	1	50	H	不发白non-whitish	发白whitish	45.31
2	透明transparent	1	1	30	HB	发白whitish	发白whitish	43.95
3	透明transparent	1	1	50	H	不发白non-whitish	不发白non-whitish	46.23
4	透明transparent	1	1	50	H	不发白non-whitish	不发白non-whitish	38.05

配方formula	T_d/℃	T_5%/℃	T_max₁/℃	T_max₂/℃	T_max₃/℃	W₇₀₀/%
1	134.3	146.32	—	201.6	367.1	8.01
2	98.8	136.3	135.9	211.6	368.8	5.33
3	118.2	148.8	158.1	213.9	364.8	8.80
4	88.8	118.7	123.1	196.5	362.4	8.48

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Preparation and Properties of Non-ionic Self-emulsified Waterborne Epoxy Curing Agents Derived from Tung Oil

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