All About Paintballs

It is mainly for round particle form. High purity and ultrafine molten round quartz powder (stated the spherical silica powder) because of its high dielectric,Guest retumbo smokeless powder Posting high heat, high humidity, excessive filler content, low thermal growth, low pressure, low impurities and occasional coefficient of friction, it has turn out to be an essential great fabric in massive-scale, LSI substrate and the encapsulation compounds for metal powder dealer.

Spherical silica powder is specifically used for massive-scale and extremely huge scale integrated circuit package deal according to the set stage (the variety of each integrated circuit standard components) to determine whether or not the round silica powder, when set for the 1M to 4M, has been part of the spherical powder 8M to 16M set extent, they’ve all the round powder. 250M units the extent of the included circuit line width is zero.25¼m, when the degree of 1G set, the included circuit line width has to zero.18¼m, Computer P-IV processor CPU chip, to reach this kind of level. Then the spherical powder is extra upscale, the primary use of polysilicon scraps is made to orthosilicate acetate and silicon tetrachloride hydrolysis of SiO2, also made of the round particle size for the (10 ~ 20) ¼m in adjustable. Spherical powder of the chemical synthesis of spherical silica powder made of herbal quartz uncooked substances to 10 instances greater costly, because this powder is primary that no radioactive alpha-ray infection, uranium content can be accomplished following zero.02PPb. Set the degree of LSI among the wire spacing is very small, the packaging materials radioactive massive IC paintings will produce the source of mistakes, make LSI reliability affected, and therefore need to of radioactive stringent requirements. Natural quartz raw materials of (zero.2 ~ 0.4) PPb on exact raw materials. Spherical silica powder is made from herbal uncooked materials of spherical powder, and additionally imported powder.

General IC is a lithography approach to recognition on the circuit engraved on the monocrystalline silicon. And then the connecting leads and tube perspective, after which the epoxy molding compound package from. The plastic substances of thermal growth of silicon the nearer the higher of the incorporated circuit thermal stability. Monocrystalline silicon melting factor of 1415 , enlargement coefficient three.5PPM, fused silica powder (0.Three to zero.Five) PPM, the epoxy resin (30 ~ 50) PPM while molten round quartz powder by way of adding a excessive percentage of epoxy resin fabricated from plastic material, the thermal growth coefficient is adjustable to about 8PPM, plus the extra the greater close to the silicon wafer, the higher. The thermal enlargement coefficient of crystalline powder typically called cornstarch 60PPM, the melting point of crystalline quartz for the 1996 ° C cannot replace the fused silica powder (fused silica powder), excessive-grade included circuits do no longer have a round powder, but also angular silicon molten powder. That is the reason why this high-quit round powder beneath the assist of crystalline powder shaping cannot end up round effectively.

Using herbal quartz SiO2, the ball may be made below high-temperature molten jet. It can obtain completely molten round quartz powder. The natural crystalline quartz can make the powder, then disperse molten ball is a ball made of flame ionization, flame burning powder obtained by way of the ball, the floor is smooth with volume contraction, better use this powder in Japan, completely flat X-ray spectroscopy spectrum, however additionally the complete molten spherical quartz powder, electric powered melting quartz, 95% amorphous content material which include Lianyungang, fused silica spectrum, the strains can still be visible the peak, is still 5% did now not soften. Thus, in the production of round silica powder, as long as the purity can attain the necessities, the natural crystalline quartz is the great uncooked cloth.