Essential Rubber Formulary: Formulas for Practitioners
Authored by a seasoned rubber technologist of four decades, this book gives practical information on compounding techniques, coloring, ingredients, as well as typical rubber testing methods.
TABLE OF CONTENTS Essential Rubber Formulary: Formulas for Practitioners
Chapter 15: Grooved Rubber Pads for Railways
15.1 Introduction
Rubber pads are used between wooden sleepers and rails in railway tracks. Asian and European countries have good market potential for this product.
| Ingredient | Alternate I (phr) | Alternate II (phr) |
|---|---|---|
| 100.00 | 100.00 |
| 5.00 | 5.00 |
| 2.50 | 2.50 |
| 5.00 | 5.00 |
| 1.00 | 1.00 |
| 1.00 | 1.00 |
| 45.00 | 45.00 |
| 20.00 |
|
| 0.75 | 0.75 |
| 1.25 | 1.25 |
| 1.50 | 1.50 |
| Total | 183.00 | 163.00 |
| Note: | ||
| Cure for 10 minutes at 140 C. | ||
| Specific gravity = 1.30 (alternate I), 1.22 (alternate II); Wallace plasticity = 30, 28; Mooney scorch time (MS 1+3) at 120 C = 10 minutes, 10 minutes; Tensile strength = 150 kg/cm 2, 165 kg/cm 2; Ultimate elongation = 500%, 550%; Modulus at 300% elongation = 60 kg/cm 2, 58 kg/cm 2; Shore hardness = 60 65 A, 55 60 A |
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