| Study on High Elastic Modulus Rubber for Screw Drill |
| Received:June 10, 2020 Revised:June 10, 2020 |
| DOI：10.12136/j.issn.1000-890X.2020.10. |
| Key Words: screw drill；motor stator；NBR；elastic modulus；modified nano silicon carbide powder；carbon black；hardening resin；sulfur |
| Author Name | Affiliation | E-mail | | SONG Jian* | Beijing Petroleum Machinery Co.，Ltd | kongkongmum@126.com | | LUO Xichao | Beijing Petroleum Machinery Co.，Ltd | |
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| Abstract: |
| The elastic modulus of the vulcanizate rubber could be improved by adding modified nano silicon carbide powder， carbon black N440 ， dispersion pretreatment 12687 hardening resin， or adjusting sulfur dosage in the rubber formula for the motor stator of the screw drill.The results showed that，the t10 and t90 of the compound could be prolonged by adding modified nano silicon carbide powder，and the t10 and t90 of the compound would be shortened by increasing sulfur dosage.The elastic modulus of the vulcanizate with the addition of modified nano silicon carbide powder was the highest，followed by that of the vulcanizate with carbon black N440.The hardness，modulus at 100% elongation and tensile strength of the vulcanizate with modified nano silicon carbide powder were the highest，the permanent deformation at break was small，and the abrasion loss was the minimal，which met the design requirements. |
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