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请问pp-r管设备有哪些？

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请问pp-r管设备有哪些？

浏览：40次 | 提问时间： 07-10 08:41

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3个答案

你眼笑柄 07-10 08:42

1、PPR管品牌有:复大海科,中财、伟星、金德、菲时特、联塑、日丰等.
2、PPR管又称PPR水管,其中的PPR是其主要原料的英文缩写,英文全称：Polypropylen Random Copolymer
3、(三型无规共聚聚丙烯).PP(聚丙烯)是目前工业中广泛采用的塑料原料,主要分为均聚聚丙烯(PP-H)和共聚聚丙烯(PP-B和PP-R)两种.
4、PP-R管又叫三型聚丙烯管,采用无规共聚聚丙烯经挤出成为管材,注塑成为管件.是欧洲90年代初开发应用的新型塑料管道产品.PP-R是80年代末,采用气相共聚工艺使5%左右PE在PP的分子链中随机地均匀聚合(无规共聚)而成为新一代管道材料.它具有较好的抗冲击性能和长期蠕变性能.
希望我的回答能帮到您

唇暖 07-10 08:50

你好，PPR管品牌有: 复大海科，中财、伟星、金德、菲时特、联塑、日丰等。 PPR管又称PPR水管，其中的PPR是其主要原料的英文缩写，英文全称：Polypropylen Random Copolymer (三型无规共聚聚丙烯)。

不重色轻友怎能永垂不朽 07-10 08:58

(1)挤出机 由于PP-R原料熔融黏度较大，熔化所需热量大，故对挤出设备有一定的特殊要求。螺杆直径一般有45mm、65mm、90mm等几种规格，长径比在30—33，按PP-R原料特性可设计两个特殊的混炼段，提高螺杆的塑化能力。在加料段应设计一个特殊的可控温冷却装置，用于控制物料进入机筒的温度。机筒各段及机头、模具均有可控温的加热段，各段温度范围为180—210℃。据资料介绍，国外的PP—R专用挤出机主电机的功率为100—140kW，螺杆转速最高可达到250r/min，根据挤出不同规格的管材其产量可达100—350kg/h。

　　(2)真空定径系统 PP-R管坯挤出后一般采用真空定径方式，在管坯进入定径套前设水环式冷却装置，防止温度较高、黏度较大的物料黏在定径套上。由于PP-R管材在冷却过程中放热量大，且管壁较厚，为了保证较高的挤出速度，一般冷却水箱长度在24m以上。另外管材对冷却水温有较高要求，通常在15—20℃，故应配备冷冻水循环系统以控制冷却水温度。

　　(3)辅助系统 PP-R管材挤出生产线自动化程度高，配有微机控制系统，能设定、记录及控制生产全过程。在加料口装有原料电子称量装置，能设定及精确控制挤出管材单位长度的质量，在真空定径箱后部设有红外线测厚装置，通过微机可设定、记录及自动控制管材的外径和壁厚。

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