2018-11-15
HDPE tube
The reason is that the melt flow in the cylinder, the flow between the cylinder wall and the inner wall of the difference, when leaving the die, the whole melt and no resistance, the gap between the two becomes zero. It is the relative movement of the layers of the change, causing the mold at the melt flow of intense oscillation, leading to the occurrence of such phenomena!
Solution:
1, pridajte pomocné látky: ako sú organické silikónové prísady (silikónové prísady do plastov) alebo polymérne prísady Fu Fu (PPA).
2, príslušné zvýšenie teploty môže tiež zlepšiť tok taveniny!
Stlačte HDPE rúrku, niekedy kvôli teplote a niekedy kvôli problémom so surovinami a viac alebo menej vzormi, niekedy však ide o zvýšenie teploty, zmenu plastového modelu alebo o koľko. Boli testované na hlave membrány vzduchového krúžku nad hlavou alebo na tejto vyvýšenine.
3, choose the rest assured HDPE pipe first to determine the appropriate material. In the past, the pipes used for water supply were mainly cast iron pipes. Outside the main sand cast iron pipe, indoor use of galvanized cast iron pipe, which can be divided into cold (electric) galvanized and hot galvanized two. Galvanized pipe as a water pipe, the use of a few years later, the tube produces a lot of rust, the outflow of yellow water not only pollution sanitary ware, and mixed with non-smooth wall breeding bacteria, rust caused by high levels of heavy metals in water, serious harm to human health. More importantly, the performance of such a superior HDPE pipe, the price is not expensive.
Drainage HDPE pipe is the traditional PVC, pig iron pipe drinking water pipe replacement products. Drainage pipe must be able to prohibit the inevitable pressure, usually choose the machine function is better, large molecular weight PE resin, such as HDPE resin, and LDPE resin pressure, tensile strength is low, poor steel, forming the proportion of poor stability when polished , And the connection problem, not suitable as a drainage pressure pipe material.
Z funkcie vysokej teploty, PE potrubie so zvýšením teploty svojej funkcie rýchlo zníži použitie teploty o ± 60 °, počas ktorej sa všeobecne používa studená voda pre hlavné potrubie, hlavne pre odtokové potrubie na hlavnej ceste, ktoré po domov Z výberu odtokového potrubia vyberiete potrubie PPR.
PE pipe light weight, good elasticity, high impact resistance, non-toxic, cheaper unit price, low temperature performance is better, is now municipal construction, real estate, factories, water conservancy construction and other water supply and drainage pipeline must.
HDPE is a thermoplastic polyolefin produced by copolymerization of ethylene. Although HDPE was introduced in 1956, but this plastic has not yet reached a mature level. This common material is also constantly developing its new uses and markets. The thermoplastic resin. The appearance of the original HDPE was milky white, in a slight cross-section was a certain degree of translucent. PE has excellent resistance to most of the characteristics of life and industrial chemicals. Certain types of chemicals can produce chemical corrosion, such as corrosive oxidants (concentrated nitric acid), aromatic hydrocarbons (xylene) and halogenated hydrocarbons (carbon tetrachloride). The polymer is not hygroscopic and has good resistance
PE sa môže vyrábať pomocou širokej škály rôznych spôsobov spracovania. Vrátane extrúzie, ako je extrúzia plechu, extrúzia filmu, extrúzia rúr alebo profilov, vyfukovanie, vstrekovanie a rotačné tvarovanie.
HDPE pipe is the traditional steel pipe, PVC drinking water pipe replacement products.
The roughness coefficient of the HDPE pipe is between 0.009 and 0.01, which is much smaller than the roughness coefficient of the reinforced concrete pipe (0.013-0.014). It can be seen that compared with the reinforced concrete pipe with the same diameter, In the traffic will be greater. For the municipal drainage works, through the application of HDPE off, can effectively increase the amount of emissions, thereby reducing the construction of sewage pumping stations, reducing the cost of urban sewage treatment.
HDPE potrubie je ohybné potrubie, na svojom rozhraní sa zvyčajne používa v ohybnom spojení, má dobrý tesniaci výkon a má silnú schopnosť prispôsobiť sa nerovnostiam usadenia potrubia, anti-únik je veľmi silný. V porovnaní s čistými betónovými rúrami, ktoré sa používajú v tradičných komunálnych odvodňovacích prácach, je HDPE rúrka pružná z hľadiska materiálu a základov a môže účinne pôsobiť proti podzemnému znečisteniu vďaka dobrému utesneniu a dobrému úniku.
Rúrka HDPE a tradičná železobetónová rúra sa líšia od použitia inertných materiálov z polyetylénu s vysokou hustotou, takže rôzne chemikálie majú silnú odolnosť proti korózii, takže pri vysokokyselinovom, vysoko alkalickom alebo splaškovom odpade má dobrý účinok V podzemí HDPE potrubie sa môže používať viac ako 50 rokov, zatiaľ čo železobetónové potrubie je náchylné na koróziu v pôde, zvyčajne v životnosti asi 20 rokov. Je zrejmé, že v porovnaní s tradičnými železobetónovými rúrami má HDPE dlhšiu alebo dlhšiu životnosť.