摘要
以低密度聚乙烯(PE-LD)、三元乙丙橡胶(EPDM)、氯化聚乙烯(CPE)3种材料作为基料制备了用于钢结构保护的防火卷材,研究了其对防火卷材性能的影响。结果表明,以CPE为基料的防火卷材耐火时间最长、拉伸强度和断裂伸长率较大,表现出较好的耐火性能和拉伸性能;以EPDM为基料的防火卷材的弯曲强度和弯曲模量最小,表现出较好的柔软性;CPE与EPDM以质量比6:4复配为基料的防火卷材的膨胀倍率达到22倍,具有较好的耐火性能,且此防火卷材的拉伸强度和断裂伸长率分别为2.31 MPa、855.47%,弯曲强度和弯曲模量分别为5.47、6.11MPa,具有良好的力学性能;CPE与EPDM复配更适合做防火卷材的基料,有利于防火材料的膨胀阻燃。
In this work, a type of fire-resistant coiled materials used as for steel structure protection was prepared by using low-density polyethylene （PE-LD）, ethylene-propylene-diene-monomer rubber （EPDM） and chlorinated polyethylene （CPE） as base materials. The influence of base materials on the performance of fire-resistant coiled materials was investigated. The results indicated that the fire-resistant coiled materials achieved better fire resistance, higher tensile strength and greater elongation at break when CPE was used as a base material, whereas they exhibited lower flexural strength and modulus when EPDM was used as a base material. When a compound of CPE and EPDM was used as base materials at a weight ratio of 6 ： 4, the fire- resistant coiled materials not only gained an expansion ratio of 22 and good fire resistance but also achieved much better mechanical properties in terms of tensile strength of 2. 31 MPa, elongation at break of 855. 47 %, flexural strength of 5. 47 MPa and flexural modulus of 6. 11 MPa. It is concluded that the compound of CPE and EPDM was more suitable as a based material for preparation of the fire-resistant coiled materials due to the advantage of intumescent flame retardancy.
出处
《中国塑料》
CAS
CSCD
北大核心
2016年第12期18-24,共7页
China Plastics
关键词
钢结构防火卷材
三元乙丙橡胶
氯化聚乙烯
防火性能
低密度聚乙烯
fire-resistant coiled materials for steel structure protection
ethylene-propylene-diene- monomer rubber
chlorinated polyethylene
fire-resistant performance
low-density polyethylene
