结晶性好,吸湿性小,可能发生熔融破裂,长期与热金属接触易发生分解。(2

It has good crystallinity and low hygroscopicity. It may melt and crack, and it will easily decompose after long-term contact with hot metals. <br>(2) The fluidity is excellent, and the overflow value is about 0.03mm. <br>(3) The cooling speed is fast and the heat dissipation is poor. The cooling system of the pouring system should dissipate heat slowly. <br>(4) Good moldability, large shrinkage range, large shrinkage rate, original wall products are prone to shrinkage, dents, and deformation, strong directionality, and easy to color. <br>(5) It has good heat resistance and is not deformed under the influence of external force at 150 °. Pay attention to controlling the forming temperature, the direction of the material temperature is low, especially at low temperature and high pressure. The mold temperature is below 50 ℃. The plastic parts are not shiny, which is prone to poor welding and flow marks. Above 90 ℃, warpage and deformation are easy to occur. <br>(6) It has good chemical stability, except for being corroded by concentrated sulfuric acid and concentrated nitric acid, it is relatively stable to other chemical reagents and has good anticorrosive effect. <br>(7) The plastic parts should have uniform wall thickness, avoid gaps, cracks and sharp corners to avoid stress concentration and ensure the quality of plastic parts.

Good crystallization, small moisture absorption, melting rupture may occur, long-term contact with hot metals prone to decomposition.<br>(2) The liquidity is excellent, the overflow value is about 0.03mm.<br>(3) The cooling speed is fast, the heat dissipation is poor, and the cooling system of the pouring system should be slow to dissipate heat.<br>(4) Good molding, large shrinkage range, large shrinkage rate, original wall products prone to shrinkholes, depressions, deformation, strong directionality, easy to color.<br>5 has good heat resistance, not subject to external forces, 150 degrees is not deformed. Attention to control the forming temperature, material temperature low directionality is obvious, especially at low temperature and high pressure is more obvious, mold temperature below 50 degrees C below the plastic parts are not glossy, easy to produce poor fusion, flow marks;<br>6 has good chemical stability, in addition to being able to be strong sulfuric acid, strong nitric acid erosion, other chemical reagents are relatively stable, good anti-corrosion effect.<br>(7) The plastic parts should be evenly thick, avoid gaps, cracks, sharp corners, to avoid stress concentration, to ensure the quality of the plastic parts.

It has good crystallinity and low hygroscopicity. It may melt and break down. It is easy to decompose in long-term contact with hot metal.<br>(2) The fluidity is excellent, and the overflow value is about 0.03mm.<br>(3) The cooling speed is fast and the heat dissipation is poor. The cooling system of the pouring system should be slow.<br>(4) Good formability, large shrinkage range, large shrinkage rate, the original wall products are prone to shrinkage, depression, deformation, strong directivity, easy to color.<br>(5) It has good heat resistance and does not deform at 150 ° without external force. Pay attention to the control of the forming temperature, the material temperature is low and the direction is obvious, especially at low temperature and high pressure. The plastic parts with the mold temperature lower than 50 ℃ are not glossy and prone to poor fusion and flow marks; warping and deformation are easy to occur above 90 ℃.<br>(6) It has good chemical stability. Besides being eroded by concentrated sulfuric acid and concentrated nitric acid, it is stable for other chemical reagents and has good antiseptic effect.<br>(7) The wall thickness of plastic parts shall be uniform to avoid notch, crack and sharp angle, so as to avoid stress concentration and ensure the quality of plastic parts.<br>