Two kinds of solid propellants based on propargyl‐terminated ethylene oxide‐tetrahydrofuran copolyether (PTPET) and ethylene oxide‐tetrahydrofuran copolyether (PET) were prepared with 1,3,5‐trinitro‐1,3,5‐triazacyclohexane (RDX), ammonium perchlorate (AP) and aluminum (Al), respectively. The order of burning rates for PET+RDX, PTPET+RDX and PET+RDX+Cu−B propellants: PTPET+RDX > PET+RDX > PET+RDX+Cu−B. Their pressure exponents are also similar when the pressure is higher than 7 MPa. The combustion residue of PET+RDX and PET+RDX+Cu−B propellants show a loose structure and there are many bright particles distributed in its flame zone. The combustion residue of PTPET+RDX propellant shows a dense structure and its flame is uniform. The burning rates of PET+AP+Cu−B propellant is between the burning rates of PET+AP and PTPET+AP propellants at the same pressure. Their flame shape is similar. The burning rates of PET+AP+Al+Cu−B propellant is also between the burning rates of PET+AP+Al and PTPET+AP+Al propellants at the same pressure. The combustion flame of PET+AP+Al propellant differs greatly in direction and shape at different time. The combustion flame of PTPET+AP+Al and PET+AP+Al+Cu−B become almost identical in shape and direction at different time. These results show that the curing catalyst Cu−B of PTPET propellant plays a catalytic role in combustion.

中文翻译：

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两种聚醚结合剂和不同氧化剂对复合推进剂的燃烧性能

分别以1,3,5-三硝基-1,3,5-三氮杂环己烷（RDX），铵盐为基础，制备了基于炔丙基末端的环氧乙烷-四氢呋喃共聚醚（PTPET）和环氧乙烷-四氢呋喃共聚醚（PET）的两种固体推进剂。高氯酸盐（AP）和铝（Al）。PET + RDX，PTPET + RDX和PET + RDX + Cu-B推进剂的燃烧速率顺序为：PTPET + RDX> PET + RDX> PET + RDX + Cu-B。当压力高于7 MPa时，它们的压力指数也相似。PET + RDX和PET + RDX + Cu-B推进剂的燃烧残留物显示为松散结构，并且在其火焰区域分布有许多明亮的颗粒。PTPET + RDX推进剂的燃烧残渣结构致密，火焰均匀。在相同压力下，PET + AP + Cu-B推进剂的燃烧速率介于PET + AP和PTPET + AP推进剂的燃烧速率之间。它们的火焰形状相似。在相同压力下，PET + AP + Al + Cu-B推进剂的燃烧速率也在PET + AP + Al和PTPET + AP + Al推进剂的燃烧速率之间。PET + AP + Al推进剂的燃烧火焰在不同的时间，方向和形状上有很大的不同。PTPET + AP + Al和PET + AP + Al + Cu-B的燃烧火焰在不同时间和形状上几乎相同。这些结果表明，PTPET推进剂的固化催化剂Cu-B在燃烧中起催化作用。PET + AP + Al推进剂的燃烧火焰在不同的时间，方向和形状上有很大的不同。PTPET + AP + Al和PET + AP + Al + Cu-B的燃烧火焰在不同时间和形状上几乎相同。这些结果表明，PTPET推进剂的固化催化剂Cu-B在燃烧中起催化作用。PET + AP + Al推进剂的燃烧火焰在不同的时间，方向和形状上有很大的不同。PTPET + AP + Al和PET + AP + Al + Cu-B的燃烧火焰在不同时间和形状上几乎相同。这些结果表明，PTPET推进剂的固化催化剂Cu-B在燃烧中起催化作用。