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A platform for research: civil engineering, architecture and urbanism
Preparation method of boehmite-nanocellulose fiber-halloysite composite flame-retardant material
The invention relates to the field of flame-retardant materials, and discloses a preparation method of a boehmite-nanocellulose fiber-halloysite composite flame-retardant material. According to the invention, lemon juice is used as an acidolysis agent for chemical pretreatment, and nano-crystalline cellulose fibers are extracted from the pericarp waste pomelo peel in combination with an efficient and low-consumption ball milling technology, so that the cost is low, and the method is green and environment-friendly; and hydroxylated halloysite is obtained by purifying and modifying halloysite natural raw ore, so that the outer surface of the hydroxylated halloysite has a large number of silicon hydroxyl groups, the hydroxylated halloysite is easy to form hydrogen bond connection with boehmite with excellent flame retardant property and nano cellulose fiber with good heat insulation property, and hydrogen bonds formed between the halloysite and the nano-crystalline cellulose fibers can be subjected to a dehydration reaction during heating, so that stable covalent bond connection is formed between the halloysite and the nano-crystalline cellulose fibers, and the halloysite, the nano-crystalline cellulose fibers and the halloysite are crosslinked together to form a flame-retardant, non-toxic, smoke-abatement and harmless composite material.
本发明涉及阻燃材料领域，公开了一种勃姆石‑纳米纤维素纤维‑埃洛石复合阻燃材料的制备方法。本发明以柠檬汁为酸解剂进行化学预处理，再结合高效低耗的球磨技术从果皮垃圾柚皮中提取纳米纤维素纤维，成本低廉，绿色环保；从埃洛石天然原矿中纯化改性得到羟基化埃洛石，使其外表面具有大量的硅羟基，易于与具备优异阻燃性能的勃姆石及具有良好隔热性能的纳米纤维素纤维形成氢键连接，其中埃洛石与纳米纤维素纤维间形成的氢键还可在加热中发生脱水反应，从而与纳米纤维素纤维形成稳定共价键连接，三者交联在一起形成一种阻燃、无毒、消烟无害的复合材料。
Preparation method of boehmite-nanocellulose fiber-halloysite composite flame-retardant material
The invention relates to the field of flame-retardant materials, and discloses a preparation method of a boehmite-nanocellulose fiber-halloysite composite flame-retardant material. According to the invention, lemon juice is used as an acidolysis agent for chemical pretreatment, and nano-crystalline cellulose fibers are extracted from the pericarp waste pomelo peel in combination with an efficient and low-consumption ball milling technology, so that the cost is low, and the method is green and environment-friendly; and hydroxylated halloysite is obtained by purifying and modifying halloysite natural raw ore, so that the outer surface of the hydroxylated halloysite has a large number of silicon hydroxyl groups, the hydroxylated halloysite is easy to form hydrogen bond connection with boehmite with excellent flame retardant property and nano cellulose fiber with good heat insulation property, and hydrogen bonds formed between the halloysite and the nano-crystalline cellulose fibers can be subjected to a dehydration reaction during heating, so that stable covalent bond connection is formed between the halloysite and the nano-crystalline cellulose fibers, and the halloysite, the nano-crystalline cellulose fibers and the halloysite are crosslinked together to form a flame-retardant, non-toxic, smoke-abatement and harmless composite material.
本发明涉及阻燃材料领域，公开了一种勃姆石‑纳米纤维素纤维‑埃洛石复合阻燃材料的制备方法。本发明以柠檬汁为酸解剂进行化学预处理，再结合高效低耗的球磨技术从果皮垃圾柚皮中提取纳米纤维素纤维，成本低廉，绿色环保；从埃洛石天然原矿中纯化改性得到羟基化埃洛石，使其外表面具有大量的硅羟基，易于与具备优异阻燃性能的勃姆石及具有良好隔热性能的纳米纤维素纤维形成氢键连接，其中埃洛石与纳米纤维素纤维间形成的氢键还可在加热中发生脱水反应，从而与纳米纤维素纤维形成稳定共价键连接，三者交联在一起形成一种阻燃、无毒、消烟无害的复合材料。
Preparation method of boehmite-nanocellulose fiber-halloysite composite flame-retardant material
一种勃姆石-纳米纤维素纤维-埃洛石复合阻燃材料的制备方法
PENG ZHIQIN (author) / WANG XIAOYUN (author) / LIU YONG (author) / YANG DAN (author) / HUANG JU (author) / WAN JUNMIN (author)
2021-10-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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