Heating, cooling and insulation and mold clamping structure is composite mold design an integral part. Structural design directly affects the appearance and internal quality product uniformity, but also affect the molding efficiency. For the different principles of particle size analysis instruments, measuring principle is based on the different characteristics of the particle is not the same, only the equivalent contrast, a direct comparison can not be laterally. Such as sedimentation particle size analyzer is based on an equivalent particle settling velocity contrast, the measured vertical diameter of the contact angle equivalent settling velocity path where the good, that is, with the measured particle diameter has the same settling velocity of homogeneous spherical particles to representative of the actual size of the particles. Laser particle size analyzer is the use of laser diffraction and scattering properties as equivalent contrast, the measured equivalent diameter of equivalent water contact angle scattering particle size, which uses actual measured scattering particles have the same effect of spherical diameter of the particles to represent the actual size of the particles. When the measured particle is spherical, its particle diameter is equivalent to its actual diameter. However, due to the shape of the powder particles of the material can not all be uniform, spherical, and have a variety of structures, and therefore, in most cases, the particle size measured by a particle size analyzer is an equivalent diameter of sense, and the actual particle size distribution will be some differences, and therefore has only a relatively meaning. Equivalent diameter of the nano-material analysis and research, it is often encountered in the nanoparticles are often referred to as nano-particle size of the order of (1 ~ 100nm) of the ultrafine particles. Since the particle size of such materials for nanoscale, itself has a small effect, quantum size effect, surface effect and macroscopic quantum tunneling effect, it has many conventional materials do not have the characteristics, catalysis, nonlinear optics, magnetic materials , aspects of medicine and new materials have broad application prospects. Therefore, the particle size of nanomaterials, distribution, has an important impact on the performance of the medium dispersion properties and morphology of the secondary particles gathered nanomaterials, therefore, particle size analysis of nanomaterials is an important aspect of nanomaterials research. Also due to the nature and importance of nanomaterials, and promote the development of particle size analysis and characterization methods and techniques, particle size analysis of nanomaterials has become an important area of ??modern particle size analysis. Currently, methods and instruments species particle size analysis of nanomaterials lot, but because of a variety of analytical methods and instrumentation design for the system to be analyzed there are certain targeted high temperature contact angle analysis principles and methods used vary, so the contact angle Select the appropriate analytical methods and analytical instruments is very important. And because the physical basis of a variety of different methods of particle size analysis, the physical meaning of the same sample obtained with different methods of measurement of particle size and even particle size is also different. In addition, the use of different particle size analysis methods are also different. If the system of analytical instruments and test results do not accurately understand and grasp, the resulting molecules tend to have large differences in actual results, does not have the scientific and representative. Therefore, according to the measured object, measuring method of measuring accuracy and measuring accuracy is very important to select and necessary. Zhuji high temperature contact angle contact angle _ _ ShengDing instruments provided by the Dongguan City Sheng Ding Precision Instrument Co., Ltd .. Dongguan Sheng Ding Precision Instrument Co., Ltd. (www.dgshengding.com) strong, credible, in Dongguan, Guangdong dedicated instrumentation industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead ShengDing into the glorious instrument and you work for a better future!