Flame-Retarding Properties of a New Phosphorus- Containing Monomer Used as Hardener in an Epoxy System

1999 ◽  
Vol 19 (3) ◽  
pp. 151-160 ◽  
Author(s):  
A.D. La Rosa ◽  
S. Failla ◽  
P. Finocchiaro ◽  
A. Recca ◽  
V. Siracusa ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Curing Agent ◽  
Epoxy System ◽  
Flame Resistance ◽  
Phosphorus Containing

Abstract A new ortho-hydroxy-aryl-phosphonate additive was used to improve the flame resistance of an epoxy/anhydride system. Thermal, rheological, L.O.l. and SEM experiments were carried out to show that the P-additive acts not only as a flame retardant but also as a curing agent.

Preparation of waterborne P-N containing epoxy resin curing and its performances

2016 ◽  
Vol 45 (5) ◽  
pp. 308-312 ◽  
Author(s):  
Wei Li ◽  
Guilong Xu ◽  
Buqin Xu ◽  
Yi Wang ◽  
Jin Yang ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Epoxy Resin ◽  
Flame Retardancy ◽  
Curing Agent ◽  
Flame Resistance ◽  
Pencil Hardness ◽  
Content Type ◽  
Coating Industry ◽  
Epoxy Curing ◽  
Resin Curing

Purpose The flammability of epoxy resin is a major disadvantage in applications that require flame resistance. Epoxy monomers and hardeners containing flame-retardant elements are molecularly incorporated in the resin network are expected to exhibit better flame resistance than those borne on an additive approach. In recent years, because of health and environmental regulation, the use of waterborne coatings has received many attentions. However, waterborne epoxy resin curing agent with excellent flame retardancy has been seldom reported. The paper aims to study the preparation of waterborne P-N-containing epoxy resin curing agent and its performances (P-N – phosphorous and nitrogen). Design/methodology/approach Waterborne P-N-containing epoxy curing agent was prepared in this study using reactive flame retardant 10-(2,5-dihydroxyphenyl)-9,10-dihydro-9-xa-10-phosphaphenanthrene-10-oxide, liquid epoxy resin, triethylenetetramine and butyl glycidyl ether at the mole ratio of 1.0:2.0:2.0:2.0. Findings The results show that the epoxy thermoset from the prepared P-N-containing curing agent presents good flame retardancy and can pass the V-1 rating, and the cured epoxy thermoset film presents excellent performances such as water resistance, adhesion, impact resistance and pencil hardness. This study provides useful suggestions for the application of the water-borne flame retardancy epoxy resins in coating industry. Research limitations/implications Each step of products during the preparation of waterborne P-N-containing epoxy curing agent cannot be accurately tested. Originality/value This method for synthesis of waterborne P-N-containing epoxy curing agent is novel and could be used for various applications in epoxy coating industry.

Preparation and characterization of flame retardant epoxy resins based on phosphorus-containing biphenyl-type phenolic resin

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
Jiapei Ding ◽  
Zhiqiang Tao ◽  
Lin Fan ◽  
Shiyong Yang
Keyword(s):  
Flame Retardant ◽  
Epoxy Resins ◽  
Phenolic Resin ◽  
Phosphorus Loading ◽  
Curing Agent ◽  
Good Thermal Stability ◽  
Phosphorus Containing ◽  
Strong Lewis Acid ◽  
Flame Retardant Properties

AbstractA phosphorus-containing biphenyl-type phenolic resin (PBP) was prepared by dehydration polycondensation of the DOPO-disubstituted 4,4’- biphenyldimethanol compound (BDCA-2DOPO) with phenol in the presence of strong Lewis acid , in which BDCA-2DOPO was prepared by the reaction of DOPO with 4,4'-biphenyldicarboxaldehyde. The PBP resin has been evaluated as the curing agent of o-cresol epoxy resins. Experimental results indicated that the PBPcured epoxy resins exhibited good thermal stability, high char yields at 700 oC and outstanding flame retardant properties. UL 94 V-0 classifications could be obtained when the phosphorus loading in the epoxy resin is higher than 1.8 wt%.

Study on thermal degradation and combustion behavior of flame retardant unsaturated polyester resin modified with a reactive phosphorus containing monomer

RSC Advances ◽  
2016 ◽  
Vol 6 (55) ◽  
pp. 49633-49642 ◽  
Author(s):  
Ying Lin ◽  
Bin Yu ◽  
Xin Jin ◽  
Lei Song ◽  
Yuan Hu
Keyword(s):  
Thermal Degradation ◽  
Flame Retardant ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Bulk Polymerization ◽  
Unsaturated Polyester Resin ◽  
Curing Agent ◽  
Phosphorus Containing ◽  
Reactive Phosphorus ◽  
Halogen Free

A halogen-free phosphorus-containing monomer (TAOPO) was successfully synthesized and used as a co-curing agent to prepare intrinsic flame-retardant unsaturated polyester resin (FR-UPR) by radical bulk polymerization with different TAOPO content.

Synthesis of Phosphorus-Containing Flame Retardant Monomer and Grafting of PET Fabrics via Electron Beam Irradiation

2020 ◽  
Vol 7 (4) ◽  
pp. 15-21
Author(s):  
Fang Ding ◽  
Shumin Zhang ◽  
Xuehong Ren ◽  
Jinping Guan
Keyword(s):  
Electron Beam ◽  
Ir Spectra ◽  
Flame Retardant ◽  
Protective Layer ◽  
Flame Resistance ◽  
Sem Images ◽  
Limiting Oxygen Index ◽  
Phosphorus Containing ◽  
Ft Ir ◽  
Char Length

The flame retardant, diethyl methacryloylphosphoramidate (DMPP), was synthesized by the reaction of diethyl chlorophosphate with methacrylamide and triethylamine. DMPP was grafted onto polyethylene terephthalate (PET) fabrics by electron beam (EB) irradiation. scanning electron microscopy (SEM) images and Fourier transform-infrared (FT-IR) spectra showed that the flame retardant was successfully grafted on the surface of PET fabrics. The morphology of the grafted fabrics after burning showed a porous protective layer on the surface. The FT-IR spectra showed that the flame retardant generated a large amount of phosphorus oxygen-nitrogen compounds after burning. The limiting oxygen index (LOI) of the grafted fabrics increased with the increase of DMPP concentration. The char length of fabrics treated with DMPP after combustion decreased from 30 cm to 5.9 cm, which demonstrated effective flame resistance.

scholarly journals Structure and properties of halogen-free flame retardant and phosphorus-containing aromatic poly(1,3,4-oxadiazole)s fiber

RSC Advances ◽  
2019 ◽  
Vol 9 (13) ◽  
pp. 7147-7155
Author(s):  
Pengqing Liu ◽  
Linan Dong ◽  
Lei Wu ◽  
Luxian Zeng ◽  
Jianjun Xu
Keyword(s):  
Flame Retardant ◽  
Structure And Properties ◽  
Flame Resistance ◽  
Phosphorus Containing ◽  
Halogen Free

The flame resistance of POD fibers can be improved significantly by introducing TPO units into the main chains.

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