(图)PPS/0220A9/制作 TPE TC7AOZ、→，LLDPE LLHC-217A、PP PT100WS、HDPE 3721C、‖。PA66 GYYHSUVCP、TPE TF3UVTPEI 1010R-7101、→，PCT TE3002、PBT RS1395、‖。TPE 901、‖。PC DFL-36 BK、TPU UH-66D20、LDPE MN72200、‖。PEI PDX-E-99550、→，PBT SEF-515T 、PC URZ2501、PC GSH2030R2、‖。PEI 2310R-7301、PP H5202COC 9506F-04 、TPU 1170A、POM AM90S 、LCP MT1345、PA6 CM1001G-15、‖。PC/ABS 70420L、‖。PP F4008、‖。PA6 F130-E5、LDPE DNDA-7230、→，PBT WX96084 、→，PP RF401、→，PCTA MB002、→，POM F30-02 、PP 3342M、→，TPU 58091、PP 1406、POM KFX-1006、LDPE L725、→，PP H2483、‖。TPE 1010UVP-3125PEKTC7HBZ、LDPE FA7229、‖。PA66 KN333HI4、→，EVA 230、‖。POM M90-45、→，EVOH F100、‖。PBT KP210、→，PBT BT-6035 、LDPE M14AES KD102S 、→，GPPS 666、PP S700、PA66 8066、PMMA AM-105H、‖。AS3130FV 、→，EVA E182L、PBT GF50-09、‖。PPS 80-10TG/40、PC/ABS GP-5006AF、‖。TPU GP55DB、‖。TPU 75ABX、→，EPDM G2470LM、PBT 4130-104D、‖。PP F705、→，氟橡胶 TN、POM 9F‖。 7660M、PC2200R、→，LDPE LD0109L、→，PBT 6123 BK、PBT CE7300G、‖。PP 4026 、PA6 FV-30、PC 603-6、POM A kind of synthetic esin, also known as poly fomaldehyde esin, POM plastic, steel mateial; is a kind of white o black plastic paticles, has the chaacteistics of high hadness, high igidity and high wea esistance. It is mainly used fo gea, beaing, auto pats, machine tool, instument inside, toy and so on.1.1 bief intoduction2.2 pefomance chaacteistics1.3 application fields2.4 pefomance1.5 pocess chaacteistics2.6 applicationbief intoductionA kind of synthetic esin, also known as poly fomaldehyde esin, POM plastic, steel mateial; is a kind of white o black plastic paticles, has the chaacteistics of high hadness, high igidity and high wea esistance. It is mainly used fo gea, beaing, auto pats, machine tools, instument and inne pats, and so on.Chaacteistic(1) POM befoe pocessing can not be dy, the best in the pocess of peheating (about 80 degees C), the stability of the poduct size is good.(2) the pocessing tempeatue of POM is vey naow (0~215 DEG C), the bael will stay fo a long time o decomposition tempeatue moe than 220 DEG C, poduce fomaldehyde gas with stong stimulation.(3) the pessue potection pessue of POM injection molding is lage (simila to the injection pessue) to educe the pessue dop. The scew speed can not be too high and the esidual amount is less.(4) POM poduct shinkage ate is lage, easy to poduce shinkage o defomation of.POM high specific heat, mold tempeatue high (80~100 degees C), poduct die vey hot, to pevent scald finges.(5) POM should be fomed unde the condition of "medium pessue, medium speed, low tempeatue and high mold tempeatue", and the contol mould tempeatue should be used when the pecision poducts ae fomed.(6) high mechanical stength and igidity(7) maximum fatigue stength(8) envionmental esistance and good oganic solvent esistance(9) stong esistance, good electical popeties, good esilience, good lubicity, good wea esistance and good size stability.Modified POMPPA PPA esin is moe solid and hade than fatty polyamide, such as nylon 6, 6 and so on. It has lowe sensitivity to wate, bette themal pefomance, and bette ceep, fatigue and chemical esistance. Fo example, the PPA esin containing 45% glass shot fibes has a tensile stength of about 276MPa, the flexual modulus moe than 13786MPa, and the themal defomation tempeatue (HDT) of 549 degee F. The tensile stength can each 117MPa even if the mineal fille level is PPA. The extensibility of PPA esin is not as good as that of nylon 6 and 6. Howeve, an uneinfoced impact gade PPA esin has been developed, and its notched cantileve impact stength is as high as 20 feet / pound / inch.All polyphenols absob a cetain amount of wate, causing plasticization and size change. Fo example, nylon 6, 6, at 23 degees F, the elative humidity is 100%, it can absob 8.9% of the moistue, which makes its glass tansition tempeatue fom 6.5 C to a 20 degee tempeatue, the size inceased 2.3%. Unde the same conditions, the PPA esin can absob about 6% of the moistue, but the vitification tempeatue of Tg will not be less than 40, and the accompanying size inceases not moe than 1%.As mentioned befoe, glass einfoced PPA esin has a high HDT value, which can toleate shot tem effects of high tempeatue, fo example, in a funace, o in steam phase and in the pocess of infaed countecuent consolidation. The themal oxidation stability of PPA esin makes it capable of long-tem high tempeatue effect and glass enhancement PPA. Within 20000 hous, its continuous use tempeatue can each 330 F.Unde nomal conditions, PPA esins usually exhibit excellent anti solubility fo fatty hydocabons, aomatic hydocabons, chloinated hydocabons, estes, ketones, alcohols and most aqueous solutions. This kind of esin can not withstand the effect of extemely stong acid and stong oxidizing agent. It is soluble in phenol and cesol. PPA is not natually flame-etadant. Accoding to the UL94 standad, the flame etadant gade esin is gaded to VO until 0.031 inches thick.Although othe melting pocesses can be used, the vast majoity of PPA esins ae pocessed by taditional injection molding. Pe dying PPA aw mateial to a humidity level below 0.1% and then loading it into a themally sealed metal village bag o box. These containes ensue that PPA aw mateials need not be died befoe pocessing. The moistue level acceptable to the pocessing pocess is 0.15% o lowe. The pocessing of wet esin can educe the molecula weight and cause the loss of mechanical popeties. Using a desiccant bucket dye, it is easy to dy the esin to the dew point humidity of 25 F o even lowe at 175 F. The dying time depends on the amount of wate absobed, usually within the ange of 4 - 16 hous.PPO pefomance1. It's white paticles. It has good compehensive pefomance and can be used in 120 degees of steam. It has good electical insulation and small wate absoption, but it has the tendency of stess cacking. The modified polyphenylene ethe can eliminate stess cacking.2. It has outstanding electical insulation and wate esistance. It has good wea esistance and electical popeties, and has good dimensional stability. Its dielectic popety anks fist in plastic.3, MPPO is a modified mateial made by blending PPO with HIPS. At pesent, the mateials on the maket ae all such mateials.4, high heat esistance, glass tansition tempeatue 211 degees, melting point 268 degees, heating to 330 degees, and decomposition tendency. The highe the content of PPO, the bette the heat esistance and the hot defomation tempeatue can each 190 degees.5, the flame etadancy is good, it has self inteest, and it has medium combustibility afte mixing with HIPS. It is light and non-toxic and can be used in the food and dug industy. Poo light esistance, long time in the sun will be discoloation.6. It can be modified by blending with ABS, HDPE, PPS, PA, HIPS, glass fibe and so on. PPO plastic aw mateial chaacteistics: A and PPO plastic mateials ae non-toxic, tanspaent and elatively small in density. They have excellent mechanical stength, stess elaxation, ceep esistance, heat esistance, wate esistance, wate vapo esistance and dimensional stability.Molding pocess PPS is a themoplastic engineeing plastic containing benzyl sulfide on the main chain of the molecule, which is a polyethe.PPS plastic mateial English Name: Phenylenesulfide specific gavity: 1.36 g / cubic centimete molding shinkage: 0.7%Molding tempeatue: 300-330 centigade. It is a kind of special themoplastic engineeing plastic with excellent compehensive pefomance. Its outstanding chaacteistics ae high tempeatue esistance, coosion esistance and supeio mechanical popeties.
