持久 发表于 2025-3-28 15:59:09
Dielectric study of aqueous solutions and solid samples of methylcellulose,ization current (TSDC) method in the temperature range 77–300 K and over a wide range of concentrations, 0.025–2.0 gr/lt, and water contents, 1.8–34.9%. Two water-dependent complex dispersions were observed in the range of 77–155 K (low-temperature dispersion) and 155–300K (high-temperature dispersi烦躁的女人 发表于 2025-3-28 19:25:28
1H-NMR transversal relaxation in crosslinked 1,4-cis-polybutadiene,hable components attributed to chain segments under different motion. Correlation times and the degree of anisotropy of segmental motion are obtained by a theoretical analysis of the form of magnetization decay.Diastole 发表于 2025-3-29 00:52:16
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http://reply.papertrans.cn/83/8262/826177/826177_44.png最低点 发表于 2025-3-29 10:45:56
Modified epoxies as studied by ultrasonic methods,elucidate the different stages of curing, the gel point, the dynamic glass transition, and the end of the crosslinking reactions. The chemical composition of the epoxy systems was varied in a systematic manner and its influence on the ultrasonic properties was studied. The results show that ultrasonNOVA 发表于 2025-3-29 12:52:34
Constraint release effects in polymer networks viscoelastic analysis,cal constraint release effects. The length distribution of the chains between two neighbouring cross-link points is taken into account in the calculation . The expression obtained is compared to theoretical results gained from other concepts and with some experimental results.angina-pectoris 发表于 2025-3-29 18:31:00
http://reply.papertrans.cn/83/8262/826177/826177_47.pngDysarthria 发表于 2025-3-29 20:20:41
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ESR on polymer semiconductors of poly(tetrathiafulvalene),ed polymeric tetrathiafulvalenes which are substituted by CH.- or C.H.-groups and poly(tetrahydroanthratetrathiafulvalene) are described. The maximum spin concentration in the doped speciality polymers is about 10. spins per gram. The conductivity of the variously doped samples lies in the area of 1替代品 发表于 2025-3-30 04:32:12
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