Process of Baluster for Stone Spiral Staircase

In modern cities, with the rapid development of economy, various stone spiral staircases were decorated by more and more hotels or guest houses. It was very popular and showed beautiful decoration design style of modern hotel. In this paper, we studied the design process of baluster from stone spiral staircase. A new technical process for baluster of spiral staircase was investigated. We found much flaws of spiral surface in process of stone staircase and calculated a series of formulas by digital control of bead or wire saw. And one-time-molding techniques will be used in pieces processing. By sample analysis, this new method is more convenient than before. We believe that this stone spiral staircase will be used by more construction in the future.

The Hydrochlorination of Rubber in Latex

A careful consideration of the influence of solvents on the hydrochlorination of rubber in solution has led to a fundamentally new technical process for the preparation of rubber hydrochloride. If hydrogen chloride is passed through latex stabilized with cationic or non-ionic emulsifying agents, rubber hydrochloride is formed. The rate of reaction, which is slow at normal temperature and pressure, can be increased considerably by carrying out the reaction under pressure. From the fact that rubber hydrochloride prepared from latex has a chlorine content very near the theoretical value, it may be concluded that hydrochlorination of rubber in latex is not accompanied by cyclization.