（ PMMA LP-1 》 通訊 ‖。PP H03G-04 、→，TPU DP9650DU HIPS PH-88BK PP KS027P 、‖。PP -MC-K1 、‖。PA66 TN720SG30 TPV 241-55 PC LN-2250Y PA66 RAL23 PP MFB419 、‖。PP 3551EU TPE TS5AAA PBT 4012 POM 7554 K(Q)膠 1111091E1K 、→，PC K-75EUV 、→，PC/ABS HR-5007X 、‖。PPS R-4-220NA LCP 1355MT PC DE006P 、→，PC HF3000HG10 PC DX09301C 、‖。PC 945 BK 、‖。PP 1007E POM FG500TL 、→，PP 4663 、→，PA6 B3WG6 ABS HU-670 、→，EVA 72D727 、→，PC/ABS HAC8250 、‖。PC BS-8130R 、→，MPR 1070BK HDPE 5502 R3 、‖。PP 5014LHPT-1 、→，PC/PET UT250 PA66 8253HS BK102 HDPE LH-3750 PMMA BM-711 PBT KP212G30V0HI 、→，AS 95HC 、‖。PA66 NPD-004 TPU 1180A PP T30S PMMA 4067 、‖。PP H-T03 、‖。PP 4660 TPE 3139 PC SC-1004ML PPS SGX-365 PC RS-3001R PMMA IR H50 、‖。PP MCR13S 、‖。PC 8430-22 、→，LLDPE LLI-10030 、‖。ABS GR-4020 、‖。PP 514A PETG K2012 、→，MDPE M4040 、‖。PA6 RS6030 PA46 HF5040 、→，PA12 206F PP K9017 PC GSH2030R2 、‖。PC CF-3104HF 、→，LDPE L420 TPV 121-55 、‖。PC 3022L1(SL) 、‖。PP H00M-01 、→，PTFE CC698 、→，PP EP3307 、‖。PC/ABS JK2500 、‖。 150W 、‖。PP TL4101A 、→，PBT PF300G8 、‖。TPU 2103-70A 、→，LDPE 6323F 、→，PA46 TE200F6 、‖。POM FW-720F 、→，POM A10-03 、‖。PP HG420FB PBT 1403G6 PP EP300K PC LSH2020 PA6 1002D 、‖。PC/ABS CX5640 EVA 2107 PP MV007SU TPV 9103-54 、‖。PC GG1920 HDPE M4855 、→，PA6 VX30CF 、→，TPV TX-52875 、→，TPE TO1088AV PP HT9020M 、‖。PPS OF-1008 、‖。TPU T5213 PC ML-3500ZEH 、‖。PC 2865 、→，PC/ABS 2500FR-3010 、‖。PA66 A60GFL PBT HX215HP POM C9021AWXAP2 ABS 920 BK PA6 L6-140 、→，EVA PA-444 PP BB724AC 、‖。PMMA VRM-40 、→，AES AEX-2870 HDPE DGDA6097 、‖。PEI 1000R-BL3112 、→，PP 7523C EVA 28-25 、‖。TPEE YF004 PP RP215M 、‖。PC DFA-113GY0-757 、→，TPE BT-1068D PC/ABS MB8700 、‖。PBT S600F10BK PC B-4330R BK 、→，PA612 77G43LBK PBT B3225XF 、‖。PC EXL1414 BK1A329L 、 POM performance parameter Performance index homopolymer POM copolymerization POM 25%GFPOM relative density One point four three One point four one One point six one Water absorption rate,% Two point five Two point one - Molding shrinkage rate,% 1.5 ~ 3 1.5 ~ 3.5 - Tensile strength, MPa Seventy Sixty-two One hundred and thirty Elongation at break,% Forty Sixty - Bending strength, MPa Ninety Ninety-eight One hundred and eighty-two Tensile modulus of elasticity, MPa Three thousand one hundred and sixty Two thousand eight hundred and thirty Eight thousand and three hundred Flexural modulus of elasticity, MPa Two thousand eight hundred and eighty Two thousand and six hundred Seven thousand and six hundred Compression strength, MPa One hundred and twenty-seven One hundred and ten - Shear strength, MPa Sixty-seven Fifty-four - Notch impact strength, (J/m) Seventy-six Sixty-five Eighty-six Rockwell hardness M94 M80 - Friction factor - Zero point one five - Fatigue limit, MPa Thirty-five Thirty-one - Thermal deformation temperature (1.82MPa), centigrade One hundred and ten One hundred and twenty-four One hundred and sixty-three Long term use temperature, centigrade Eighty One hundred - Coefficient of linear expansion (x 10K) Seven point five Eight point five Two point six Thermal conductivity [W/ (m ? K)] Zero point two three Zero point two three - Volume resistivity, Omega cm Ten Ten 3.8 x 10 Dielectric constant (10Hz) Three point eight Two point seven PPO L) non crystalline material, moisture absorption is small, the PPO water absorption rate is very low, but the water will make the product appear on the surface of silver, bubbles and other defects, therefore, can be placed in the oven raw 80~1OOC Shen, dry 1-2h after use. 2) the molecular bond of PPO is very rigid, and the glass conversion temperature is high, and it is not easy to orientate, but it is difficult to relax after forced orientation. Therefore, the residual internal stress in the product is high, and it should be treated after the post. 3) PPO is an amorphous material. The rheological properties of the material in the melting state are close to the Newton fluid, but the greater the degree of deviation from the Newton fluid as the temperature rises. 4) the viscosity of PPO melt is large, so the temperature should be improved and the injection pressure should be improved to improve the filling ability. 5) the reuse of PPO can be reused, and it is used repeatedly 3 times, and its performance is not significantly reduced. 6) the PPO melt should be molded by a screw injection molding machine. The nozzle has a good straight through, and the aperture is 3-6mm 7) in PPO injection molding, high pressure and high speed injection should be taken, and the time of pressure protection and cooling should not be too long. 8) the sprue mold should adopt large taper?or?by pulling hook, sprue to stub as well. 9) the gate should be directly, fanned?or?flat, and the diameter should be increased properly when the needle gate is used, and the structure of the hot runner can be used for the long cast. 10) the forming shrinkage rate of PPO is small, which is generally 0.2% 1 0.7%, so the product has good size stability. 11) poor fluidity, which is similar to Newton fluid, the viscosity is more sensitive to the temperature, and the thickness of the product is generally above 0.8 mm. It is very easy to decompose, and the corrosion gas is produced when decomposing. The molding temperature should be strictly controlled. The mold should be heated and the flow resistance of the feed system should be small. 12) water polyphenylene ether's low rate of about 0.06%, but the trace moisture can lead to smooth silver and other phenomena appear on the surface of the product, it is best for the drying process, the temperature can not be higher than 150 degrees, otherwise the color will change. 13) the molding temperature of polyphenylene ether is 280-330 degrees, and the molding temperature of the modified polyphenylene ether is 260-285 degrees. PPO plastic raw material injection process melting temperature: 270-290 C application area