| 摘要 |
<p>The invention provides a curable synthetic resin matrix which is formulated so that it can be extruded and will form a stable flexible extrudate. Its main use if for lining tubes which can be placed on pipelines or passageways and cured hard. The matrix can be extruded in tubular form or in sheet form and then folded to tube form . The main reason for so formulating the resin is that the felt layer or layers in conventionally used lining tubes can be eliminated rendering the manufacturing process quicker and cheaper. The matrix is also formulated so that the resin will not cure until acted upon by external energy, especially ultrasonic energy.</p> |
