伸長結晶とゴム物性

DOI Web Site Web Site 参考文献13件

書誌事項

タイトル別名
  • Strain-Induced Crystallization and Mechanical Properties of Rubber.
  • 特論講座 伸長結晶とゴム物性(第5回)網目,絡み合い,伸長結晶化と物性
  • トクロン コウザ シンチョウ ケッショウ ト ゴム ブッセイ(ダイ5カイ)アミメ,カラミアイ,シンチョウ ケッショウカ ト ブッセイ
  • 第5回　網目，絡み合い，伸長結晶化と物性
  • 5. Network, Entanglement, Strain Induced Crystal (SIC) and Mechanical Properties.

この論文をさがす

抄録

<p>1. Hysteresis of stress-strain, SIC-strain, temperature-strain in un-vulcanized rubber and vulcanized rubber have been observed. The elucidation of the SIC phenomena should be applicable on these hysteresis. Temperature increase is a result of heat producing process of phase transition from amorphous to crystal, that is, latent crystallization heat. Therefore, temperature change is directly connected to SIC.</p><p>2. A new constitutive equation of stress-strain relation with inhomogeneous distribution of network chain, SIC and temperature change was proposed by Khiêm and Itskov. They succeeded to simulate a stress-strain relation of vulcanized natural rubber during loading and un-loading. They addressed that a creation of bundle-like SIC decreases the increasing stress during loading process and SIC may transform from bundle-like crystal to folded-chain crystal during un-loading process.</p><p>3. Rubber is composed of not only polymer chain but also solid particles and crystals such as zinc oxide, stearic acids, non-rubber components of NR and others. Therefore, rubber is very inhomogeneous material. During deformation, polymer matrix is deformed in-homogeneously, therefore, stress and strain distribute and concentrate at certain area. At these stress and strain concentrated area, void or crack might be occurred. SIC are created easily at such area because of high stress or strain. In such case, rubber is no more non-compressible material.</p><p>4. Shape memory phenomenon. After stretching 800% and keeping the sample for a few minutes, then release the sample, the sample shrink a little bit to 750% and keep the stretched state without any force. The phenomenon is a kind of shape memory. It must be a special relationship between SIC and networks. It may suggest us to try other deformation technique in order to characterize SIC phenomena.</p><p></p>

収録刊行物

  • 日本ゴム協会誌

    日本ゴム協会誌 91 (9), 344-350, 2018

    一般社団法人 日本ゴム協会

参考文献 (13)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ