文章信息/Info

Title:

Study on Flame Resistance of Carbon Fiber/Resin Composites

文章編號:

1674-3962(2025)10-0938-07

作者:

李敏; 李林; 李松陽; 何歆; 冀浩

1. 中國航發(fā)商用航空發(fā)動機(jī)有限責(zé)任公司，上海 200241 2. 中國民用航空局第二研究所，四川 成都 610041 3. 中國民用航空適航審定中心，北京 100102

Author(s):

LI Min;  LI Lin;  LI Songyang;  HE Xin;  JI Hao

1. AECC Commercial Aircraft Engine Co��, Ltd��, Shanghai 200241, China 2. The Second Research Institute of Civil Aviation Administration of China,Chengdu 610041, China 3. Airworthiness Certification Center, Civil Aviation Administration of China,Beijing 100102,China

關(guān)鍵詞:

碳纖維/樹脂復(fù)合材料; 防火實(shí)驗(yàn); 火焰耐受性; 溫度; 適航

Keywords:

carbon fiber/resin composites;  fire test;  flame resistance;  temperature; airworthiness

分類號:

TB334;V258;V244.1+2

DOI:

10.7502/j.issn.1674-3962.202409002

文獻(xiàn)標(biāo)志碼:

A

摘要:

碳纖維/樹脂復(fù)合材料由于比強(qiáng)度高、可設(shè)計(jì)性強(qiáng)的優(yōu)點(diǎn)在民用航空發(fā)動機(jī)上有著越來越重要的應(yīng)用。當(dāng)復(fù)合材料部件的功能為發(fā)動機(jī)防火墻時，需要開展設(shè)計(jì)評估，表明其對航空發(fā)動機(jī)適航規(guī)定（CCAR-33R2）第33-17條防火條款的適航符合性。為解決現(xiàn)階段復(fù)合材料部件缺乏火焰包容能力的實(shí)驗(yàn)研究和基礎(chǔ)實(shí)驗(yàn)數(shù)據(jù)支撐的問題，開展了不同層厚的熱固型復(fù)合材料（碳纖維/環(huán)氧樹脂）和熱塑型復(fù)合材料（碳纖維/聚醚醚酮）防火實(shí)驗(yàn)。防火實(shí)驗(yàn)結(jié)果表明，經(jīng)過15 min標(biāo)準(zhǔn)火焰沖擊，2種復(fù)合材料均未出現(xiàn)燒穿現(xiàn)象，展現(xiàn)出良好的火焰包容能力。通過對實(shí)驗(yàn)件表面溫度的測量，建立了其火焰耐受性隨層厚增加的變化規(guī)律。對比分析了2種復(fù)合材料的背火面溫度差異及影響因素，這對復(fù)合材料部件防火適航設(shè)計(jì)與驗(yàn)證、提高發(fā)動機(jī)防火安全性具有指導(dǎo)意義。

Abstract:

Carbon fiber/resin composites play an increasingly critical role in civil aviation engines. When composite components work as firewalls, a design assessment is required to demonstrate airworthiness compliance with Airworthiness Standards: Aircraft Engines(CCAR-33R2) 33-17 fire protection. To address the issue that lacking of tests study on fire-resistance of composites components and accumulate fundamental experimental data for fire protection design of composites in civilian aero-engine, the thickness-dependent flame resistance of thermosetting composites (carbon fiber/epoxy resin) and thermoplastic composites (carbon fiber/polyether ether ketone) was investigated by fire tests. Fire tests results show that both composites did not burn through after impingement of standard flame for 15 minutes, demonstrating good flame containment capacity. By measuring the temperature on the backward side, the changes in flame resistance with increasing layer thickness were revealed. A comparative analysis was conducted on the temperature difference on the backward face between the two composites and the influencing factors, which gives significant guidance for the aeronautical certification and validation of fire safety designs for composites, as well as for enhancing the overall fire safety of engines.