Study of the Oil-Resistance of Natural Rubber

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ชื่อเรื่อง

Study of the Oil-Resistance of Natural Rubber

ชื่อเรื่องอื่น/ชื่อเรื่องเทียบเคียง

การศึกษาคุณสมบัติต้านทานต่อน้ำมันของยางธรรมชาติ

ผู้สร้าง/เจ้าของผลงาน

Nilubol Kiattanavith

หัวเรื่อง

Natural rubber--Properties
Polymers--Testing

คำอธิบายรายละเอียดของเอกสาร

Rubbers are usually selected for oil-resistance applications on the basis of their properties before and after aging in test fluids under conditions that are related to service environment and the cost and ease of processing of their compounds. All of the oil-resistance rubbers are special rubbers such as nitrile rubber(NBR), chloroprene rubber(CR), polysulphide rubber(TR) and so on. There are no obvious general trends toward the use of other single rubber (i.e. general purpose rubber) in recent or predicted usage. This is because of the wide variety of properties required in industrial applications, the large number of specifications for each types of industries, and the versatility of special rubbers. The successful development and use of oil-resistant synthetic rubbers has inevitably led to a slackening of interest in oil-resisting natural rubber. However, since Thailand is a natural rubber-producing country and a large volume of oil-resistant synthetic rubber has to be imported every year and is relatively expensive. This gives some importance to the problem of compounding natural rubber so as to confer the best resistance to the swelling action of fuels and petroleum hydrocarbons.

สรุปเนื้อหา/บทคัดย่อ

Studies were made of the oil-resistant properties of natural rubber (NR). The effects compounding ingredients on the oil-resistance of NR were determined. The results showed that compounding by changing crosslink type, crosslink density, accelerators or additions of fillers could modify oil-resistant properties of NR but the effect was small compared with the effect of chemical structure of rubbers. The improvement of oil-resistance of NR was attempted through the method of blending with NBR or ENR-50. Blending of NR with NBR or ENR-50 could lower its swelling in oils and fuels to the extent that depends on NBR or ENR content. However, it was not sufficient to modify the oil-resistance of NR to acceptable levels by blending with NBR or ENR. NR may only be used in small quantity 10-30% in order to modify prices of oil-resistant NBR or ENR.

ผู้จัดพิมพ์/สำนักพิมพ์

National Research Council Thailand

วัน/เดือน/ปีที่ผลิตเอกสาร

1988

วันที่บันทึกข้อมูล

2025-05-31

สิทธิ์การเข้าถึง

This document is distributed under the terms of the Creative Commons Attribution 4.0 International (CC-BY-NC-ND 4.0) and copyright of the Chulachomklao Royal Military Academy

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17 leaves

ต้นฉบับ/แหล่งที่มา

Journal of National Research Council, Vol. 20, No. 2 July-December 1988, 1-18
Library and Information Center, National Institute of Development Administration

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Ministry of Higher Education, Science, Research and Innovation

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