生产PC阳光板时要思索的热性能和冷却速度
从性能特性来看，PC阳光板的比热、热传导率、热变形温度等热性能与其他塑料是不同的，由于比热高的塑化时需求热量大，因而在生产的时分要选用塑化才能大的阳光板挤出设备。
来源：http://www.wanzhongyue.com/ 日期：2019-06-18 发布人：admin 浏览次数：次
From the point of view of performance characteristics, the specific heat, thermal conductivity, thermal deformation temperature and other thermal properties of PC solar panel are different from other plastics. Because of the high specific heat of plasticization, the extrusion equipment with high plasticization ability should be selected in the production time.
热变形温度高塑料的冷却时间可短，脱模早，但脱模后要避免冷却变形；相反，热传导率低的PC阳光板冷却速度慢，所以必需充沛冷却，一定要增强模具冷却效果。
The cooling time of plastics with high thermal deformation temperature can be shorter and the demoulding time is earlier, but the cooling deformation should be avoided after demoulding. On the contrary, the cooling speed of PC sunshine plate with low thermal conductivity is slow, so it is necessary to cool sufficiently, and the cooling effect of the mould must be enhanced.
事实证明，热浇道模具适用于比热低，热传导率高的PC阳光板，比热大、热传导率低，热变形温度低、冷却速度慢的阳光板则不利于高速成型，必需选用恰当的注塑机及增强阳光板模具冷却。
It has been proved that the hot runner mould is suitable for PC solar panel with low specific heat and high thermal conductivity. The solar panel with high specific heat and low thermal conductivity, low thermal deformation temperature and slow cooling speed is not conducive to high-speed forming. It is necessary to select appropriate injection moulding machine and strengthen the cooling of the solar panel mould.
PC阳光板生产按其品种特性及外形，请求必需坚持恰当的阳光板冷却速度，所以阳光板模具必需按成型请求设置加热和冷却系统，以坚持一定模温。当料温使模温升高时应予冷却，以避免塑件脱模后变形，缩短成型周期，降低结晶度。
PC sunshine plate production according to its variety characteristics and shape, the request must adhere to the appropriate cooling speed of sunshine plate, so the sunshine plate mold must be set up according to the requirements of heating and cooling system, in order to adhere to a certain mold temperature. When the material temperature increases the mould temperature, it should be cooled to avoid the deformation of the plastic parts after demoulding, shorten the forming cycle and reduce the crystallinity.
当PC阳光板余热缺乏时要使模具坚持一定温度时，则模具应设有加热系统，使模具坚持在一定温度，以控制冷却速度，保证活动性，改善填充条件或用以控制阳光板使其迟缓冷却，避免厚壁内外冷却不匀及进步结晶度等。
When the waste heat of PC solar panel is insufficient, the die should be heated at a certain temperature to control cooling speed, ensure activity, improve filling conditions or control the slow cooling of the solar panel, avoid uneven cooling inside and outside the thick wall and improve crystallinity.
