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| HDPE | 日本聚烯烴 | HD KL272C |
PE最通常的生產(chǎn)方法是通過(guò)淤漿或氣相加工法，也有少數(shù)用溶液相加工生產(chǎn)。所有這些加工過(guò)程都是由乙烯單體、a-烯烴單體、催化劑體系（可能是不止一種化合物）和各種類型的烴類稀釋劑參與的放熱反應(yīng)。氫氣和一些催化劑用來(lái)控制分子量。淤漿反應(yīng)器一般為攪拌釜或是一種更常用的大型環(huán)形反應(yīng)器，在其中料漿可以循環(huán)攪拌。當(dāng)乙烯和共聚單體（根據(jù)需要）和催化劑一接觸，就會(huì)形成聚 乙烯顆粒。除去稀釋劑后，聚乙烯顆?；蚍哿１桓稍锊磩┝考尤胩砑觿蜕a(chǎn)出粒料。帶有雙螺桿擠出機(jī)的大型反應(yīng)器的現(xiàn)代化生產(chǎn)線，可每小時(shí)生產(chǎn)PE40000磅以上。新的催化劑的開(kāi)發(fā)為改進(jìn)新等級(jí)HDPE的性能作出貢獻(xiàn)。兩種最常用的催化劑種類是菲利浦的鉻氧化物為基礎(chǔ)的催化劑和鈦化合物一烷基鋁催化劑。菲利浦型催化劑生產(chǎn)的HDPE有 中寬度分子量分布；鈦一烷基鋁催化劑 生產(chǎn)的分子量分布窄。用復(fù)式反應(yīng)器生產(chǎn)窄MDW的聚合物所用催化劑也可用 于生產(chǎn)寬MDW品級(jí)。舉例來(lái)說(shuō)，生產(chǎn)顯著不同分子量產(chǎn) 品的兩個(gè)串聯(lián)反應(yīng)器可以生產(chǎn)出雙峰分子量聚合物，這種聚合物具有全寬域的分子量分布。
Method for the production of PE is the most common by slurry or gas phase process, there are a few with solution phase processing. All of these processes are made of vinyl monomer, a- olefin monomer, catalyst system (may be more than one compound) exothermic reb and various types of hydrocarbon diluent participation. Hydrogen and catalyst is used to control the molecular weight. A slurry reactor is stirred tank or large loop reactor, a more common, in which the slurry can cycle stirred. When ethylene and a comonomer (as required) and catalyst contact, will b the polyethylene particles. After removal of the diluent, polyethylene particles or powder is dried and additive dosage, the production of pellets. Large reactor with double screw extruder production line, each hour pounds more than the PE40000 production. The development of new catalysts and contribute to the perbance improvement of the new class HDPE. Two kinds of catalyst is the most commonly used chrome oxide Philip based catalyst and titanium compound alkyl aluminium catalyst. Philip type catalyst for producing HDPE in b distribution of molecular weight; molecular weight titanium alkyl aluminium catalyst production of narrow distribution. With the production of narrow MDW complex reactor polymer catalyst can also be used in the production of wide MDW grade. For example, the production of different molecular mass production of two series reactor can produce Shuangfeng the polymer molecular weight, molecular weight distribution of the polymer has a full b domain.
| HDPE | 日本聚烯烴 | HD KL272C |
The melting point of HDPE is 142 ℃, decomb temperature 300 ℃; the injection temperature adjustable interval larger. Injection molding, general use temperature is 180 ℃ --230 ℃; because the olefine plastic, it does not absorb water, production, without drying, but to the quality of the products, can be 60 ℃ drying 1hr, to discharge the water; the melt viscosity of polyethylene, flow length ratio is small, thin-walled products may lack of glue, therefore, gate and runner is relatively large; products easy with static electricity, surface easy to absorb. Shrinkage rate was 16 ‰; overflow boundary value for 0.05mm.
HDPE有數(shù)不清的應(yīng)用，范圍從可重復(fù)使用的薄壁飲料杯到5－gsl罐，消費(fèi)國(guó)內(nèi)生產(chǎn)的HDPE的1/5。注塑品級(jí)一般熔體指數(shù)5～10，有具有韌性較低流動(dòng)性品級(jí)和具有可加工性的較高流動(dòng)性品級(jí)。用途包括日用品和食品薄壁包裝物；有韌性、耐用的食品和涂料罐；高抗環(huán)境應(yīng)力開(kāi)裂應(yīng)用，如小型發(fā)動(dòng)機(jī)燃料箱和90－gal垃圾罐。
一般的HDPE熔點(diǎn)為142℃，分解溫度為300℃；注塑溫度的可調(diào)區(qū)間較大。注塑時(shí)，一般使用溫度為180℃--230℃；因是烯烴類塑料，它不吸水，生產(chǎn)時(shí)，不需烘干，但為了產(chǎn)品質(zhì)量，可用60℃溫度烘干1hr，以排出浮水；聚乙烯的熔體粘度大，流長(zhǎng)比小，薄壁制品可能缺膠，因此，澆口和流道相對(duì)較大；制品易帶靜電，表面易吸埃。收縮率為16‰；溢邊值為0.05mm。
| HDPE | 日本聚烯烴 | HD KL272C |
HDPE是一種結(jié)晶度高、非極性的熱塑性樹(shù)脂。原態(tài)HDPE的外表呈乳白色，在微薄截面呈一定程度的半透明狀。PE具有優(yōu)良的耐大多數(shù)生活和工業(yè)用化學(xué)品的特性。某些種類的化學(xué)品會(huì)產(chǎn)生化學(xué)腐蝕，例如腐蝕性氧化劑（濃硝酸），芳香烴（二甲苯）和鹵化烴 （四氯化碳）。該聚合物不吸濕并具有好的防水蒸汽性，可用于包裝用途。HDPE具有很好的電性能，特別是絕緣介電強(qiáng)度高，使其很適用于電線電纜。中到高分子量等級(jí)具有極好的抗沖擊性，在常溫甚至在-40F低溫度下均如此。各種等級(jí)HDPE的獨(dú)有特性是四種基本變量的適當(dāng)結(jié)合：密度、分子量、分子量分布和添加劑。不同的催化劑被用于生產(chǎn)定制特殊性能聚合物。這些變量相結(jié)合生產(chǎn)出不同用途的HDPE品級(jí)；在性能上達(dá)到最佳的平衡。
HDPE is a high degree of crystallinity, non-polar thermoplastic resin. The original state of HDPE milky white appearance, with a certain degree of translucent at thin section. PE has excellent chemical resistance properties with the most life and industry. Some kinds of chemicals will produce chemical corrosion, such as corrosive oxidizer (nitric acid) (Er Jiaben), aromatic hydrocarbons and halogenated hydrocarbons (carbon tetrachloride). The polymer is not hygroscopic and has good waterproof steam, and can be used for packing. HDPE has good electrical properties, especially the insulation of high dielectric strength, so it is suitable for wire and cable. Medium to high molecular weight grades with excellent impact resistance, at room temperature even in the -40F low temperature so. The unique characteristics of various grades of HDPE is an appropriate combination of four basic variables: density, molecular weight, molecular weight distribution and additive. Different catalysts are used in the production of customized special properties of polymer. These variables are combined to produce the different uses of HDPE grade; in the perbance of the best balance.
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通用塑膠：PP，ABS，HIPS，PE，EVA，PVC，GPPS；
工程塑膠：PMMA，PC，PA6，PC/ABS，PA66，PA4T，PA46，PA/ABS，PA/PPE，PA6T，PC/PBT，POM，PBT；
高溫塑膠：PPA，PA46，PA9T，LCP，PA6T；
特種工程塑膠：PPS，COC，COP，IXEF，PTFE，PFA，ETFE，F(xiàn)EP，PVDF，PEI，PEEK，PI，PPA，PES，PSU，PPSU，PSF，PUR，PA12，PA11
