热带作物学报

不同稳定剂对天然胶乳稳定性的影响

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赵立广 ¹^,²^,³ , 陈松 ⁴ , 宋亚忠 ¹^,² , 丁丽 ¹^,² , 李建伟 ¹^,² , 王岳坤 ¹^,³ , 陈施显 ¹^,³ , 邓大雨 ¹^,⁵ , 桂红星 ¹^,²^,^*

热带作物学报 | 采后处理与质量安全 2023,44(10): 2073-2083

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热带作物学报 | 采后处理与质量安全 2023, 44(10): 2073-2083

不同稳定剂对天然胶乳稳定性的影响

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赵立广¹^,²^,³, 陈松⁴, 宋亚忠¹^,², 丁丽¹^,², 李建伟¹^,², 王岳坤¹^,³, 陈施显¹^,³, 邓大雨¹^,⁵, 桂红星¹^,²^,^*

作者信息

^1.中国热带农业科学院橡胶研究所，海南海口　571101

^2.海南省天然橡胶栽培与加工工程研究中心，海南海口　571101

^3.海南省高性能天然橡胶材料工程重点实验室，海南海口　571101

^4.阳江市新特体育科技用品有限公司，广东阳江　529931

^5.海南国际商业航天发射有限公司，海南文昌　571300

赵立广（1990—），男，博士研究生，助理研究员，研究方向：天然橡胶加工技术。

通讯作者:

^* 桂红星（GUI Hongxing），E-mail: guihongxing@263.net。

Effects of Different Stabilizers on the Stability of Natural Rubber Latex

Liguang ZHAO¹^,²^,³, Song CHEN⁴, Yazhong SONG¹^,², Li DING¹^,², Jianwei LI¹^,², Yuekun WANG¹^,³, Shixian CHEN¹^,³, Dayu DENG¹^,⁵, Hongxing GUI¹^,²^,^*

Affiliations

^1.Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan 571101, China

^2.Hainan Provincial Natural Rubber Cultivation and Processing Engineering Research Center, Haikou, Hainan 571101, China

^3.Hainan Provincial Key Laboratory of High-performance Natural Rubber Materials Engineering, Haikou, Hainan 571101, China

^4.Yangjiang New Sports Technology Products Co., Ltd., Yangjiang, Guangdong 529931, China

^5.Hainan International Commercial Aerospace Launch Co., Ltd., Wenchang, Hainan 571300, China

出版时间: 2023-10-25 doi: 10.3969/j.issn.1000-2561.2023.10.018

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摘要

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低氨、无氨浓缩胶乳在乳胶制品加工应用过程中存在性能不足的问题，包括稳定性较差、硫化速度慢、湿凝胶强度低等，主要与稳定剂的使用有关。稳定剂对天然胶乳的性能影响很大，本研究选用氢氧化钾（KOH）、氨、十二烷基硫酸钠（SDS）和月桂酸钾4种稳定剂添加到天然胶乳中，研究不同稳定剂对鲜胶乳和超低氨浓缩胶乳稳定性的影响。结果表明：KOH能快速提升天然胶乳pH；维持鲜胶乳黏度稳定；提升鲜胶乳的机械稳定性（MST），尤其是当用量超过0.3%时作用更明显；但KOH会使浓缩胶乳黏度上升，导致浓缩胶乳增稠，对提升浓缩胶乳MST和氧化锌机械稳定性（ZST）作用不明显；KOH能显著提升浓缩胶乳的热稳定性以及橡胶粒子的粒径。氨用量较低时能快速提升天然胶乳的pH，但用量较高时提升作用下降；氨能稳定鲜胶乳的黏度，提升鲜胶乳MST，但当用量超过0.2%时提升作用不明显；同时，氨能维持浓缩胶乳的流动性，稳定黏度值；氨对提升浓缩胶乳的MST、ZST和热稳定性作用不明显；对胶乳橡胶粒子的粒径影响较小。SDS单独添加时会导致鲜胶乳增稠；但能维持浓缩胶乳流动性，抑制黏度升高；能缓慢提升浓缩胶乳的MST和ZST，提高橡胶粒子粒径，但对热稳定性提升作用不明显。月桂酸钾单独使用时同样会导致鲜胶乳增稠，同时也会导致浓缩胶乳缓慢增稠；但月桂酸钾能快速提升浓缩胶乳MST和ZST，同时月桂酸钾会导致浓缩胶乳热稳定性快速下降，对提高橡胶粒子粒径也有一定效果，但当用量超过0.3%时粒径降低。因此，在浓缩胶乳生产过程中需要控制稳定剂的种类和用量。

关键词

天然胶乳 / 稳定剂 / 稳定性 / 橡胶粒子粒径

Abstract

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In this study, potassium hydroxide (KOH), ammonia, sodium dodecyl sulfate (SDS) and potassium laurate were added to NRL to study the effects of different stabilizers on the stability of NRL. The results showed that KOH could quickly increase pH value of NRL, maintain the viscosity of fresh latex, improve the mechanical stability (MST) of fresh latex, especially when the dosage exceeds 0.3%. But KOH would increase the viscosity of concentrated natural rubber latex (CNRL), lead to the thickening of the CNRL. It had no obvious effect on improving MST and the mechanical stability (ZST) of the concentrated latex. KOH could significantly improve the thermal stability of the CNRL, significantly improve the particle size of the rubber particles. When the dosage of ammonia was low, pH value of NRL could quickly increased, but when the dosage was high, the effect of improvement was not obvious. Aammonia could stabilize the viscosity of fresh latex, increase MST of fresh latex, but when the dosage exceeded 0.2%, the increase was no longer obvious. At the same time, ammonia could maintain the fluidity of CNRL and stabilize the viscosity value. Ammonia had no obvious effect on improving MST, ZST and thermal stability of CNRL, it had no obvious effect on the particle size of latex rubber particles. SDS would increase the viscosity of the fresh latex, resulting in the thickening of the fresh latex, but it could maintain the fluidity of the CNRL and inhibit the viscosity increase. It could slowly increase MST and ZST of CNRL. Increasing the average particle size of rubber particles also had a certain effect. Potassium laurate would increase the viscosity of fresh latex, resulting in thickening of fresh latex, at the same time, it would also cause CNRL to thicken slowly. Potassium laurate could also rapidly increase MST and ZST of concentrated latex, and cause CNRL to heat up the stability decreases rapidly. It also had a certain effect on increasing the average particle size of rubber particles, but when the dosage exceeded 0.3%, the particle size would also decrease. Therefore, the type and dosage of stabilizers need to be controlled during the production of CNRL.

Key words

natural rubber latex / stabilizer / stability / rubber particle size

引用本文

赵立广, 陈松, 宋亚忠, 丁丽, 李建伟, 王岳坤, 陈施显, 邓大雨, 桂红星. 不同稳定剂对天然胶乳稳定性的影响. 热带作物学报, 2023 , 44 (10) : 2073 -2083 . DOI: 10.3969/j.issn.1000-2561.2023.10.018

Liguang ZHAO, Song CHEN, Yazhong SONG, Li DING, Jianwei LI, Yuekun WANG, Shixian CHEN, Dayu DENG, Hongxing GUI. Effects of Different Stabilizers on the Stability of Natural Rubber Latex[J]. Chinese Journal of Tropical Crops, 2023 , 44 (10) : 2073 -2083 . DOI: 10.3969/j.issn.1000-2561.2023.10.018

基金

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海南省重大科技计划项目(ZDKJ2021045)
海南省重点研发计划项目(ZDKJ2021004)
现代农业产业技术体系建设专项(CARS-33-GJ1)

参考文献

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2023年第44卷第10期

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文章信息

doi: 10.3969/j.issn.1000-2561.2023.10.018

接收时间：2022-07-01
首发时间：2026-03-05
出版时间：2023-10-25

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出版历史

收稿日期：2022-07-01
修回日期：2022-10-17

基金

海南省重大科技计划项目(ZDKJ2021045)

海南省重点研发计划项目(ZDKJ2021004)

现代农业产业技术体系建设专项(CARS-33-GJ1)

作者信息

^1.中国热带农业科学院橡胶研究所，海南海口　571101

^2.海南省天然橡胶栽培与加工工程研究中心，海南海口　571101

^3.海南省高性能天然橡胶材料工程重点实验室，海南海口　571101

^4.阳江市新特体育科技用品有限公司，广东阳江　529931

^5.海南国际商业航天发射有限公司，海南文昌　571300

通讯作者:

^* 桂红星（GUI Hongxing），E-mail: guihongxing@263.net。

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https://castjournals.cast.org.cn/joweb/rdzwxb/CN/10.3969/j.issn.1000-2561.2023.10.018

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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