Riset babagan Aturan Pangowahan Tingkat Penyusutan Polyurethane Elastomer lan Pengaruhe

Panaliten Aturan PangowahanPoliuretanTingkat Penyusutan Elastomer lan Pengaruhe

Pilihan nyusut minangka salah sawijining faktor utama sing nemtokake sukses desain cetakan. Khusus kanggo ukuran gedhe (ukuran bagean ing ndhuwur 1 o00 m / n)poliuretan elastomer products, due to its large shrinkage rate (usually around 1.5%), if the shrinkage rate is not selected properly, the modulus of lighter will increase the modulus to extend the mold’s Manufacturing time increases the cost of the mold; more importantly, it is scrapped due to the excessive size of the mold. Therefore, analyzing the reasons for the shrinkage of the poliuretan elastomer and studying the qualitative relationship between the shrinkage rate and the process conditions are of great significance to the design of the casting poliuretan elastomer mold. In this paper, through a large number of process experiments, the effect of process conditions, structural factors and environmental conditions on the shrinkage rate has been comprehensively studied.

Aturan pangowahan tingkat nyusut sakapoliuretanelastomer yaiku:

1) Tambah kanthi nambah suhu cetakan;

2) Owahi ing bentuk zigzag kanthi tambahan wektu ngobati;

3) Ngurangi paningkatan suhu sekitar;

4) Fluktuasi kanthi paningkatan asor lingkungan;

5) Struktur cetakan sing beda duwe resistensi sing beda kanggo nyusut, kanthi arah longitudinal paling cilik lan arah melintang paling gedhe;

6) Sadurunge dawa tartamtu, tingkat nyusut mundhak kanthi nambah dawa jalur aliran, sawise dawa tartamtu, laju nyusut mudhun kanthi nambah dawa aliran.

Bisa dingerteni manawa kahanan proses duwe pengaruh tartamtu tumrap laju nyusut, lan pengaruh suhu paling penting; struktur produk kasebut dhewe pengaruhe luwih gedhe ing tingkat penyusutan, lan poliuretansistem elastis utamane disebabake bedane ing jalur aliran; Faktor lingkungan banjur mengaruhi faktor, lan pangowahan minangka faktor utama sing nyebabake fluktuasi tingkat shrinkage.