水性粘缸剂的制备及表征

doi:10.3969/j.issn.0253-2417.2022.05.012

Abstract

Abstract:

In this study, waterborne polyamide(PA236) was synthesized using adipic acid and diethylene triamine. Then, the modified PA236 was obtained by grafting waterborne epoxy resin onto PA236G. Finally, after adding a certain amount of hydroxyethyl cellulose and waterborne curing agent 906 to the PA26G, the waterborne adhesive CA514 was obtained. The structure and relative molecular weight of PA236 and PA236G were characterized by FT-IR, NMR and GPC. The results confirmed the successful synthesis of the PA236 and the grafting of waterborne epoxy. TG analysis was used to determine the thermal properties of these two products, indicating that they could be used as the raw materials for creping adhesive. The properties of the film formed by CA514 were tested. The results showed that the film formed by drying CA514 had similar properties to those of the commercial products, while it has better water resistance with an average swelling degree of 188.3%. The mechanical tests showed that the average shear strength of CA514 could reach 0.122 MPa, which was about twice as that of commercial products, and the CA514 adhesion of substrate was 136.55 N, which was about 1.4 times than that of commercial products. The result indicated that CA514 had the potential to be used as cylinder adhesive.

Key words: waterborne polyamide, waterbonre epoxy resin, creping adhesive

CLC Number:

TQ35
TS761.6

Shuai LI, Laihui XIAO, Yigang WANG, Jie CHEN, Wenbin LI, Xiao'an NIE. Preparation and Characterization of Waterborne Creping Adhesive[J]. Chemistry and Industry of Forest Products, 2022, 42(5): 83-90.

Figures/Tables 10

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References 22

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样品 samples	数均相对分子质量 number average relative molecular mass(M_n)	重均相对分子质量 weight average relative molecular mass(M_w)	峰位相对分子质量 peak relative molecular mass(M_p)	多分散性指数(M_w/M_n) polydispersity index(PDI)
PA236	4333	8784	9065	2.03
PA236G	4983	9788	9985	1.96

样品 samples	失重5%温度/℃ temp. at 5% weight loss(T_5%)	失重10%温度/℃ temp. at 10% weight loss(T_10%)	最大失重速率温度/℃ temp. at maximum weight loss rate(T_m)	残炭量(700 ℃)/% char residual
PA236	187.27	239.79	334.79	2.30
PA236G	187.29	229.79	337.29	2.48

产品¹⁾ products	编号 No.	剪切强度/kPa shear strength	铅笔硬度 pencil hardness	溶胀度/% swelling degree	推力/N thrust
CA514	1	109.4	< 6B	182.6	133.6
	2	118.3	< 6B	200.9	140.6
	3	133.0	< 6B	193.5	138.2
	4	123.3	< 6B	175.5	139.7
	5	128.2	< 6B	189.0	130.6
	平均值average	122.4	< 6B	188.3	136.6
PAE^*	1	50.9	< 6B	276.1	93.2
	2	59.0	< 6B	256.1	99.0
	3	40.1	< 6B	305.0	98.2
	4	66.0	< 6B	322.2	93.8
	5	44.1	< 6B	271.4	104.5
	平均值average	52.0	< 6B	286.2	97.7

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Preparation and Characterization of Waterborne Creping Adhesive

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