PET 美國杜邦 FR530-WT504，價(jià)格合理,誠信經(jīng)營，可全國供貨（廣東省內(nèi)免費(fèi)送上門）。支持物流，快遞和貨運(yùn);支持現(xiàn)金，銀行轉(zhuǎn)賬交易。

東莞市廣業(yè)塑膠原料有限公司專業(yè)銷售原裝進(jìn)口塑膠原料，原廠原包，假一賠十，本司貨源穩(wěn)定充足，發(fā)貨準(zhǔn)時(shí)，交期和質(zhì)量均有保障！是專業(yè)塑膠原料供應(yīng)商?。。】商峁?span>COA,SMDS,SGS,COC,UL黃卡和物性表及加工參數(shù)。

PET 美國杜邦 FR530-WT504特性：

PET/美國杜邦/FR530-WT504 阻燃 塑膠原料塑料顆粒

PET 美國杜邦 FR530-WT504          

PET 美國杜邦 FR530-WT504

PET 美國杜邦 FR530-WT504

PET 美國杜邦 FR530-WT504

PET 美國杜邦 FR530-WT504                                      

PET 美國杜邦 FR530-WT504 其他型號報(bào)價(jià):

PET 美國杜邦 FR530-WT504

英文名： polyethylene terephthalate(簡稱PET)

別名：聚對苯二甲酸乙二酯； 聚對酞酸乙二酯；的確良；滌綸；聚乙烯對苯二甲酸酯；達(dá)克綸等。

CAS號：25038-59-9

密度：1.68g/mLat 25°C^[1] 

熔點(diǎn)：250-255°C

聚對苯二甲酸乙二醇酯是熱塑性聚酯中最主要的品種，俗稱滌綸樹脂。它是由對苯二甲酸二甲酯與乙二醇酯交換或以對苯二甲酸與乙二醇酯化先合成對苯二甲酸雙羥乙酯，然后再進(jìn)行縮聚反應(yīng)制得。與PBT一起統(tǒng)稱為熱塑性聚酯，或飽和聚酯。

1946年英國發(fā)表了第一個(gè)制備PET的專利，1949年英國ICI公式完成中試，但美國杜邦公司購買專利后，1953年建立了生產(chǎn)裝置，在世界最先實(shí)現(xiàn)工業(yè)化生產(chǎn)。初期PET幾乎都用于合成纖維(我國俗稱滌綸、的確良)。80年代以來，PET作為工程塑料有突破性的發(fā)展，相繼研制出成核劑和結(jié)晶促進(jìn)劑，目前PET與PBT一起作為熱塑性聚酯，成為五大工程塑料之一。

PET分為纖維級聚酯切片和非纖維級聚酯切片。①纖維級聚酯用于制造滌綸短纖維和滌綸長絲，是供給滌綸纖維企業(yè)加工纖維及相關(guān)產(chǎn)品的原料。滌綸作為化纖中產(chǎn)量最大的品種。②非纖維級聚酯還有瓶類、薄膜等用途，廣泛應(yīng)用于包裝業(yè)、電子電器、醫(yī)療衛(wèi)生、建筑、汽車等領(lǐng)域，其中包裝是聚酯最大的非纖應(yīng)用市場，同時(shí)也是PET增長最快的領(lǐng)域。

大量用作纖維，而工程塑料樹脂可分為非工程塑料級和工程塑料級兩大類，非工程塑料級主要用于瓶、薄膜、片材、耐烘烤食品容器等。

PET 是乳白色或淺黃色、高度結(jié)晶的聚合物，表面平滑有光澤。在較寬的溫度范圍內(nèi)具有優(yōu)良的物理機(jī)械性能，長期使用溫度可達(dá)120℃，電絕緣性優(yōu)良，甚至在高溫高頻下，其電性能仍較好，但耐電暈性較差，抗蠕變性，耐疲勞性，耐摩擦性、尺寸穩(wěn)定性都很好。PET 有酯鍵，在強(qiáng)酸、強(qiáng)堿和水蒸汽作用下會發(fā)生分解，耐有機(jī)溶劑、耐候性好。缺點(diǎn)是結(jié)晶速率慢，成型加工困難，模塑溫度高，生產(chǎn)周期長，沖擊性能差。一般通過增強(qiáng)、填充、共混等方法改進(jìn)其加工性和物性，以玻璃纖維增強(qiáng)效果明顯，提高樹脂剛性、耐熱性、耐藥品性、電氣性能和耐候性。但仍需改進(jìn)結(jié)晶速度慢的弊病，可以采取添加成核劑和結(jié)晶促進(jìn)劑等手段。加阻燃劑和防燃滴落劑可改進(jìn) PET阻燃性和自熄性。

優(yōu)點(diǎn)

1.有良好的力學(xué)性能，沖擊強(qiáng)度是其他薄膜的3~5倍，耐折性好。

2.耐油、耐脂肪、耐烯酸、稀堿，耐大多數(shù)溶劑。

3.具有優(yōu)良的耐高、低溫性能，可在120℃溫度范圍內(nèi)長期使用，短期使用可耐150℃高溫，可耐-70℃低溫，且高、低溫時(shí)對其機(jī)械性能影響很小。

4.氣體和水蒸氣滲透率低，既有優(yōu)良的阻氣、水、油及異味性能。
5.透明度高，可阻擋紫外線，光澤性好。

6.無毒、無味，衛(wèi)生安全性好，可直接用于食品包裝。

性能

PET是乳白色或前黃色高度結(jié)晶性的聚合物，表面平滑而有光澤。耐蠕變、耐抗疲勞性、耐磨擦和尺寸穩(wěn)定性好，磨耗小而硬度高，具有熱塑性塑料中最大的韌性：電絕緣性能好，受溫度影響小，但耐電暈性較差。無毒、耐氣候性、抗化學(xué)藥品穩(wěn)定性好，吸水率低，耐弱酸和有機(jī)溶劑，但不耐熱水浸泡，不耐堿。

PET樹脂的玻璃化溫度較高，結(jié)晶速度慢，模塑周期長，成型周期長，成型收縮率大，尺寸穩(wěn)定性差，結(jié)晶化的成型呈脆性，耐熱性低等。

通過成核劑以及結(jié)晶劑和玻璃纖維增強(qiáng)的改進(jìn)，PET除了具有PBT的性質(zhì)外，還有以下的特點(diǎn)。

1.熱變形溫度和長期使用溫度是熱塑性通用工程塑料中最高的

2.因?yàn)槟蜔岣撸鰪?qiáng)PET在250℃的焊錫浴中浸漬10S，幾乎不變形也不變色，特別適合制備錫焊的電子、電氣零件。

3.彎曲強(qiáng)度 200MPa,彈性模量達(dá)4000MPa，耐蠕變及疲勞性也很好，表面硬度高，機(jī)械性能與熱固性塑料相近。

4.由于生產(chǎn)PET所用乙二醇比生產(chǎn)PBT所用丁二醇的價(jià)格幾乎便宜一半，所以PET樹脂和增強(qiáng)PET是工程塑料中價(jià)格最低的，具有很高的性價(jià)比。

為改進(jìn)PET性能，PET可與PC、彈性體、PBT、PS類、ABS、PA形成合金。

PET（增強(qiáng)PET）主要采取注射成型法加工，其他方法還有擠出、吹塑、涂覆和焊接、封接、機(jī)加工、真空鍍膜等二次加工方法。成型前須充分干燥。

聚對苯二甲酸乙二醇酯是由對苯二甲酸二甲酯與乙二醇酯交換或以對苯二甲酸與乙二醇酯化先合成對苯二甲酸雙羥乙酯，然后再進(jìn)行縮聚反應(yīng)制得。屬結(jié)晶型飽和聚酯，平均分子量(2-3)×104，重均與數(shù)均分子量之比為1.5-1．8。玻璃化溫度80℃，馬丁耐熱80 ℃，熱變形溫度98℃(1. 82MPa)，分解溫度353℃。具有優(yōu)良的機(jī)械性能．剛性高．硬度大，吸水性很小，尺寸穩(wěn)定性好。韌性好，耐沖擊、耐摩擦、耐蠕變。耐化學(xué)性好，溶于甲酚、濃硫酸、硝基苯、三氯醋酸、氯苯酚，不溶于甲醇、乙醇、丙酮、烷烴。使用溫度-100～120℃。 彎曲強(qiáng)度 148-310MPa

吸水性 0. 06%-0.129%

沖擊強(qiáng)度 64.1-128J/m

洛氏硬度 M 90-95

伸長率 1.8%-2.7%

PET 美國杜邦 FR530-WT504

In the plastic classification, PET code is No. 1, the role of a wide range:

The main application for the electrical and electronic aspects are: electrical outlets, electronic connectors, rice cookers handle, TV bias yoke, terminal blocks, broken electrical shell, switch, motor fan shell, instrument mechanical parts, cash register parts, iron, Furnace gears, pulley, pump parts, in addition to wheelchair body and wheels, lampshades, wheelchair, wheelchair, Housing, illuminator shell, drain fittings, zippers, watch parts, sprayer parts.

In addition:

Can be spun into polyester fiber, that is, polyester.

Can be made of film for recording, video, film and other substrates, insulation film, product packaging and so on.

As a plastic can be blown into a variety of bottles, such as Coke bottles, mineral water bottles and so on.

Can be used as electrical parts, bearings, gears and so on.

processing b

Polyester polyester from terephthalic acid and ethylene glycol polycondensation, follow the general rule of linear polycondensation. Production of polyester polyester, has developed a transesterification and direct esterification of two synthetic technology.

(1) transesterification or indirect esterification

This is the traditional production b, from methyl esterification, ester exchange, final polycondensation of three steps, the purpose of methyl esterification is to facilitate the purification of dimethyl terephthalate purification.

① methyl ester of terephthalic acid and slightly excess of methanol reb, the first ester into dimethyl terephthalate. Steamed water, excess methanol, methyl benzoate and other low-boiling material, and then by distillation, that is pure terephthalic acid dimethyl ester.

② Ester exchange 190 ~ 200 ° C, with cadmium acetate and antimony trioxide as a catalyst, the dimethyl terephthalate and ethylene glycol (molar ratio of about 1: 2.4) ester exchange reb to b a polyester oligomer The Distill the methanol and allow the transesterification to be sufficient.

③ the final condensation in the melting point above the polyester, such as 283 ℃, with antimony trioxide as a catalyst, the ethylene terephthalate from the polycondensation or ester exchange, by decompression and high temperature, continue to distill the by-product ethylene glycol , Gradually increase the degree of polymerization.

Methyl esterification and transesterification stages, regardless of the number of groups such as groups. The final condensation stage, according to the amount of ethylene glycol distillate, the natural adjustment of the number of two groups, and gradually approaching the amount of material, slightly more than ethylene glycol, block the molecular ends, to achieve a predetermined degree of polymerization.

(2) direct esterification b

After terephthalic acid purification technology is resolved, this is the preferred b of economic use. Terephthalic acid and excess ethylene glycol are esterified to a low degree of polymerization (e.g., X = 1 to 4) of polyethylene terephthalate at 200 ° C and then finally condensed at 280 ° C to a final degree of high degree of polymerization Polyester products (n = 100 ~ 200), this step is the same as the indirect esterification b.

With the degree of polycondensation, the viscosity of the system increases. In the project, the condensation will be more favorable in the two reactors. Pre-shrinking: 270 ° C, 2000 to 3300 Pa. After the final condensation: 280 ~ 285 ℃, 60 ~ 130Pa.

Forming processing

PET molding can be injection molding, extrusion, blow molding, coating, bonding, machining, electroplating, vacuum plating, printing. The following describes the main two.

1. Injection molding grade ① temperature setting: nozzle: 280 ~ 295 ℃, the ber 270 ~ 275 ℃, forging 265 ~ 275 ℃, the latter 250-270 ℃; screw speed 50 ~ 100rpm, mold temperature 30 ~ 85 ℃ , Non-crystalline mold for the 70 ℃ about 5-15KG back pressure. ② test dehumidification dryer, the material temperature 240 ~ 280 ℃, injection pressure 500 ~ 1400 ℃, injection molding temperature 260 ~ 280 ℃, drying temperature 120 ~ 140 ℃, take 2 to 5 hours.

2. Film grade First PET resin slices pre-drying to prevent hydrolysis, and then in the extruder at 280 ℃ by T-die extruded amorphous thick film, after cooling the drum or coolant to quench to keep it An amorphous state for tensile orientation. Thick film and then by the tenter two-way stretch, into a PET film. Longitudinal stretching is to preheat the thick sheet to 86 ~ 87 ℃, and at this temperature along the direction of the extension of the thick sheet stretched about 3 times, so that the orientation can be increased to achieve a higher temperature crystallinity: transverse stretching preheating temperature 98 to 100 ° C, a stretching temperature of 100 to 120 ° C, a draw ratio of 2.5 to 4.0, and a heat setting temperature of 230 to 240 ° C. The longitudinally stretched film is also subjected to heat setting to eliminate debation of the film produced by stretching to produce a film with good thermal stability.

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PET 美國杜邦 FR530-WT504