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本色防火合金PC/PBT VALOX 553U 抗紫外線PC/PBTSABIC Valox系列PBT簡(jiǎn)介

聚對(duì)苯二甲酸丁二醇酯，英文名polybutylene terephthalate（簡(jiǎn)稱PBT），屬于聚酯系列，是由1.4-pbt丁二醇(1.4-Butylene glycol)與對(duì)苯二甲酸(PTA)或者對(duì)苯二甲酸酯(DMT)聚縮合而成，并經(jīng)由混煉程序制成的乳白色半透明到不透明、結(jié)晶型熱塑性聚酯樹脂。與PET一起統(tǒng)稱為熱塑性聚酯，或飽和聚酯。

PBT特性

1、機(jī)械性能：強(qiáng)度高、耐疲勞性、尺寸穩(wěn)定、蠕變也�。ǜ邷貤l件下也極少有變化）；

2、耐熱老化性：增強(qiáng)后的UL溫度指數(shù)達(dá)120~140℃（戶外長(zhǎng)期老化性也很好）；

3、耐溶劑性：無(wú)應(yīng)力開裂；

4、對(duì)水穩(wěn)定性：PBT遇水易分解（高溫、高濕環(huán)境下使用需謹(jǐn)慎）；

5、絕緣性能：優(yōu)良（潮濕、高溫也能保持電性能穩(wěn)定,是制造電子、電氣零件的理想材料）；

6、介電系數(shù)：3.0-3.2；

7、耐電弧性：120s

8、成型加工性：普通設(shè)備注塑或擠塑。由于結(jié)晶速度快，流動(dòng)性好，模具溫度也比其他工程塑料要求低。在加工薄壁制件時(shí)，僅需幾秒鐘，對(duì)大部件也只要40-60s即可。

PBT的應(yīng)用

1、電子電器：連接器、開關(guān)零件、家用電器、配件零件、小型電動(dòng)罩蓋或（耐熱性、阻燃性、電氣絕緣性、成型加工性）；

2、汽車：外裝零件：主要有轉(zhuǎn)角格珊、發(fā)動(dòng)機(jī)放熱孔罩等；內(nèi)部零部件：主要有內(nèi)鏡撐條、刮水器支架和控制系統(tǒng)閥；

3、汽車電器零件：汽車點(diǎn)火線圈絞管和各種電器連接器等。

4、機(jī)械設(shè)備：視頻磁帶錄音機(jī)的帶式傳動(dòng)軸、電子計(jì)算機(jī)罩、水銀燈罩、電熨斗罩、烘烤機(jī)零件以及大量的齒輪、凸輪、按鈕、電子表外殼、照相機(jī)的零件（有耐熱、阻燃要求）

PBT注塑工藝

干燥處理：這種材料在高溫下很容易水解，因此加工前的干燥處理是很重要的。建議在空氣中的干燥條件為120℃，6~8小時(shí)，或者150℃，2~4小時(shí)。濕度必須小于0.03。如果用吸濕干燥器干燥，建議條件為150℃，2.5小時(shí)。[2]

熔化溫度：225~275℃，建議溫度：250℃ 。

模具溫度：對(duì)于未增強(qiáng)型的材料為40~60℃。要很好地設(shè)計(jì)模具的冷卻腔道以減小塑件的彎曲。熱量的散失一定要快而均勻。建議模具冷卻腔道的直徑為12mm。

注射壓力：中等（最大到1500bar）。

注射速度：應(yīng)使用盡可能快的注射速度（因?yàn)镻BT的凝固很快）。

流道和澆口:建議使用圓形流道以增加壓力的傳遞（經(jīng)驗(yàn)公式：流道直徑=塑件厚度 1.5mm）�？梢允褂酶鞣N型式的澆口。也可以使用熱流道，但要注意防止材料的滲漏和降解。澆口直徑應(yīng)該在0.8~1.0*t之間，這里 t是塑件厚度。如果是潛入式澆口，建議最小直徑為0.75mm。

SABIC Valox系列PBT介紹

Valox 175 Unreinforced, neat PBT resin for compounding only. Natural Color Only.

Valox 175HP Unreinforced, neat FDA compliant PBT resin for compounding only.

Valox 176 Unreinforced, neat PBT resin for fibers. Natural Color Only.

Valox 176HP Unreinforced, FDA compliant neat PBT resin for fibers. Natural Color Only.

Valox 195 For compounding only (not for injection molding) Unreinforced PBT.

Valox 195HP For compounding only (not for injection molding) Unreinforced PBT.

Valox 215HPR Unreinforced PBT with mold release. FDA food contact compliant in limited colors.

Valox 295 Unreinforced PBT;Melt viscosity 900-1300 poise.

Valox 305 PBT, For compounding only. Not intended for Injection Molding.

Valox 308 PBT, For compounding only. Not intended for Injection Molding.

Valox 310 Unreinforced, general purpose. Typical viscosity 5000-7000.

Valox 310SE0 Unreinforced, flame retardant PBT. V0-0.7mm.

Valox 311 Unreinforced, improved resistance to UV. Medium viscosity.

Valox 312 Unreinforced, For compounding only (not for injection molding).

Valox 315 Unreinforced, For extrusion/compounding only (not for injection molding).

Valox 325 General purpose, unreinforced, improved processing.

Valox 337 Low temperature impact PBT.

Valox 357 PC/PBT, Impact Modifier, Flame Retardant

Valox 357U Unreinforced PBTP, UL94 V-0/5VA rated. Improved UV resistant version of VALOX 357.

Valox 364 Designed for outdoor telecommunications enclosure applications.

Valox 365 Unreinforced, opaque, provides chemical resistance and dimensional stability.

Valox 3706 Impact modified PBT PC. Outdoor enclosures. Not available in all colors.

Valox 4012G 10 glass fiber reinforced PBT with excellent mechanical properties.

Valox 420 30 GR, excellent strength, stiffness and dimensional stability. High heat resistance.

Valox 420HP 30 Glass filled PBT resin, FDA Food Contact compliant in limited colors.

Valox 420SE0 30 GR, UL94V-0/5V rated. Numerous applications.

Valox 420SE0U PBT, 30 Glass Reinforced, Flame Retardant UL94 V-0/5VA rated, UV-Stabilized

Valox 430 33 glass reinforced, impact modified.

Valox 451E 20 GR. Easy flow version of VALOX 451.

Valox 4521 PBT, Glass Fiber, Flame Retardant, UL Grade

Valox 457 6.5 GR PBT, UL94 V-0/5V.

Valox 508 30 GR PBT PC. Excellent mechanical and thermal performance.

Valox 508R 30 GR PBT PC. Excellent mechanical and thermal performance.

Valox 553 30 GR PBT PC, UL94 V-0. Reduced warpage characteristics.Applications.

Valox 553U 30 GR PBT PC, UL94 V-0. Reduced warpage characteristics.Applications.

Valox 815 15 GR PBTPET, excellent surface finish.

Valox 815F PBT PET, 15 Glass, Mold Release, Heat Stabilized, For Foodcontact applications

Valox 830 30 GR PBTP, excellent surface finish.

Valox 830F PBT PET, 30 Glass, Mold Release, Heat Stabilized, For foodcontact applications

Valox 855 15 GR PBTP, UL94 V-0 rated. Improved surface appearance.

Valox 865 30 GR PBTP, UL94 V-0 rated. Non-blooming flame retardant.

Valox CS815 15 glass reinforced PBT PET. Improved heat aged color stability, high surface gloss.

Valox DR48 17 glass reinforced, flame retardant grade UL-94 rated V-0/5VA.

Valox DR51 15 GR polyester, excellent mechanical, thermal and electrical performance.

我公司長(zhǎng)期經(jīng)營(yíng)SABIC Valox系列PBT，可提供SGS、ROHS、UL黃卡、MSDS、FDA、COC、PDF物性表等各項(xiàng)數(shù)據(jù)，多年誠(chéng)信為本，貨源穩(wěn)定、現(xiàn)貨庫(kù)存、質(zhì)量保證、原廠原包、假一賠十、歡迎來(lái)電洽談！

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