相关实验视频

Updated: Jun 25, 2025

Twin-Screw Extrusion Process to Produce Renewable Fiberboards

Twin-Screw Extrusion Process to Produce Renewable Fiberboards

Published on: January 27, 2021

绿色阻燃混合物用于提高聚烯的防火性能

Christian J Cabello-Alvarado^1,2, Marlene Andrade-Guel¹, Marissa Pérez-Alvarez¹

¹Centro de Investigación en Química Aplicada, Saltillo 25294, Coahuila, Mexico.

|May 25, 2024

概括

这项研究开发了使用天然添加剂红素和clinoptilolite的阻燃聚烯复合材料. PPGFR-20复合材料获得了V-0 UL-94评级,这表明其提高了消防安全性能.

科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
消防安全工程消防安全工程

背景情况:

聚合物的易燃性对于安全性和应用范围至关重要.
阻燃材料对于提高聚合物安全性至关重要.
绿色阻燃剂为传统添加剂提供可持续的替代品.

研究的目的:

开发阻燃聚烯 (PP) 复合材料,使用天然添加剂:木质素和clinoptilolite.
评估开发的复合材料的热稳定性,易燃性和机械性能.
为了研究宁和clinoptilolite之间的分散和潜在协同作用.

主要方法:

融挤出用于复合材料制备.
热重力测量分析 (TGA) 测量热稳定性.
圆热量计和UL-94测试用于评估可燃性.
扫描电子显微镜 - 能量分散式X射线光谱 (SEM-EDS) 用于材料表征.

主要成果:

带有红素和clinoptilolite的PP复合材料显示出更好的热稳定性.
在PPGFR-20中,峰值热释放率 (HRR) 降低了高达11.88%.
PPGFR-20获得了UL-94 V-0和5VB等级,证明了有效的阻燃性.
观察到添加剂的良好分散,在较高度下观察到一些协同作用.

结论:

聚烯复合材料中含有素和克林诺皮托利特,具有增强的阻燃性能.
PPGFR-20复合材料在防火应用中具有显著的潜力.
在高负载下观察到红素和clinoptilolite之间的协同效应,需要进一步调查.

关键词:

克林奥普提洛利特是什么意思阻燃剂是一种阻燃剂.异性聚乙烯是一种异性聚乙烯.红色的线性物质是红色的.融挤出技术是如何实现的

更多相关视频

Generation of Greater Bacterial Biofilm Biomass using PCR-Plate Deep Well Microplate Devices

Generation of Greater Bacterial Biofilm Biomass using PCR-Plate Deep Well Microplate Devices

Published on: April 22, 2022

Solution Blow Spinning of Polymeric Nano-Composite Fibers for Personal Protective Equipment

Solution Blow Spinning of Polymeric Nano-Composite Fibers for Personal Protective Equipment

Published on: March 18, 2021

相关概念视频

Types of Step-Growth Polymers: Polyesters

Types of Step-Growth Polymers: Polyesters

The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...

Polymer Classification: Architecture

Polymer Classification: Architecture

Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...

Polymer Classification: Stereospecificity

Polymer Classification: Stereospecificity

Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...

Free-Radical Chain Reaction and Polymerization of Alkenes

Free-Radical Chain Reaction and Polymerization of Alkenes

The conversion of alkenes to macromolecules called polymers is a reaction of high commercial importance. The structure of the polymer is defined by a repeating unit, while the terminal groups are considered insignificant. The average degree of polymerization represents the number of repeating units in the polymer molecule and is denoted by the subscript n.

Flame Photometry: Overview

Flame Photometry: Overview

Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...

Anionic Chain-Growth Polymerization: Overview

Anionic Chain-Growth Polymerization: Overview

The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...