Исследование полимерных материалов методом линейной дилатометрии

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L

]^_ fi(T) – g_dhlhju_ nmgdpbb dZ`^Zy ba dhlhjuo hibku\Z_l h^bg j_eZdkZpbhgguc ijhp_kk Ba wdki_jbf_glZ ba\_klgh qlh baf_g_gby \ ihebf_jZo b IDF oZjZdl_jbamxlky eb[h baf_g_gb_f \_ebqbgu DELJ ijb i_j_oh^_ ba h^gh]h khklhygby \ ^jm]h_ eb[h wdklj_fZevguf baf_g_gb_f \_ebqbgu DELJ \ g_dhlhjhc i_j_oh^ghc h[eZklb f(T )

7 7     G

f(T )

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Jbk  Lbibqgu_ j_eZdkZpbhggu_ i_j_oh^u 14

< i_j\hf kemqZ_ jbk Z ^ey fh^_evgh]h n_ghf_gheh]bq_kdh]h hibkZgby fh`gh \hkihevah\Zlvky nmgdpb_c   dhlhjZy wd\b\Ze_glgZ nmgdpbb jZkij_^_e_gby N_jfb>bjZdZ gh hlghkbl_evgh l_fi_jZlmju 

I (7 ) =

D ,  + H[S[G ⋅ (7 − 7 )]

(2.2)

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20

Bkke_^m_fZy ie_gdZ y\ey_lky ijhkluf ebg_cguf ihebf_jhf Ohjhrh \ujZ`_gguf j_eZdkZpbhgguf ijhp_kkhf ^ey g__ y\ey_lky αj_eZdkZpby dhlhjZy y\ey_lky h[jZlbfuf ijhp_kkhf lZd dZd ijb hoeZ`^_gbb kbkl_fZ \ha\jZsZ_lky \ bkoh^gh_ khklhygb_ LZdbf h[jZahf \ ijb\_^_gghf ijbf_j_ h[gZjm`_gguc wnn_dl mkZ^db h[mkeh\e_g \gmlj_ggbfb gZijy`_gbyfb ijbkmlkl\mxsbfb \ ie_gd_ IhiulZ_fky gZclb mjh\_gv wlbo gZijy`_gbc ba wdki_jbf_glZevgh hij_^_e_ggh]h l_jfbq_kdh]h jZkrbj_gby b agZq_gby fh^mey Xg]Z ^ey ZgZeh]bqgh]h ihebf_jZ \aylh]h ba ebl_jZlmju >@ Hp_gbf \gmlj_ggb_ gZijy`_gby \ ijb[eb`_gbb ^_nhjfZpbb ijhklh]h jZkly`_gby bkihevamy deZkkbq_kdmx l_hjbx \yadhmijm]hklb [4] Ij_^iheh`bf qlh \ fZl_jbZe_ bagZqZevgh ijbkmlkl\m_l ^_nhjfZpby h[mkeh\e_ggZy \gmlj_ggbf gZijy`_gb_f dhlhjZy bkq_aZ_l ijb j_eZdkZpbb gZijy`_gby \uau\Zy l_f kZfuf mkZ^dm dhlhjZy hlq_leb\h nbdkbjm_lky ijb ^beZlhf_ljbq_kdbo baf_j_gbyo Ba l_hjbb mijm]hklb ba\_klgh qlh jZkly]b\Zxs__ gZijy`_gb_ σ = F/s l_ jZ\gh jZkly]b\Zxs_c kbe_ hlg_k_gghc d iehsZ^b ihi_j_qgh]h k_q_gby h[jZapZ Fh^mev Xg]Z ih hij_^_e_gbx k\yaZg k gZijy`_gb_f b \_ebqbghc ^_nhjfZpbb khhlghr_gb_f (=

σ , ε

(2.5)

]^_ ε = ∆l/L – ^_nhjfZpby h[mkeh\e_ggZy gZijy`_gb_f Hp_gbf ^_nhjfZpbx h[mkeh\e_ggmx gZqZevgufb gZijy`_gbyfb bkoh^y ba ij_^klZ\e_gby f_lh^hf ^ey \u^_e_gby lhc qZklb j_eZdkZpbhggh]h ki_dljZ h kmi_jihabpbb j_eZdkZpbhgguo ijhp_kkh\ \ ihebf_jZo [3] i  b \hkihevah\Z\rbkv ki_dljhf_ljbq_kdbf dhlhjZy h[mkeh\e_gZ j_eZdkZpb_c gZqZevguo gZijy`_gbc GZ jbk bah[jZ`_gZ qZklv l_fi_jZlmjghc aZ\bkbfhklb i_j\hc ijhba\h^ghc DELJ ih l_fi_jZlmj_ Imgdlbjhf ihf_q_gZ khklZ\eyxsZy  

21

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7.

7

∫ G7 ∫ I (7 ′)G7 ′ ,

7

(2.6)

7

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α (7 ) =

7

∫ I (7 ′)G7 ′ – khklZ\eyxsZy DELJ Lh]^Z ij_^iheh`b\ qlh

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22

σ =

7.

∫ ( (7 )⋅ α (7 )G7

(2.8)

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28

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α  FRV ϕ> +  ∆LL  @ + α VLQ  ϕ> +  ∆LL  @ FRV



ϕ +  ∆LL   + VLQ  ϕ +  ∆LL  

(3.4)

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