CN102417680A - 一种无铅的排水用pvc-u管材及其制备方法 - Google Patents

一种无铅的排水用pvc-u管材及其制备方法 Download PDF

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CN102417680A
CN102417680A CN2011103885516A CN201110388551A CN102417680A CN 102417680 A CN102417680 A CN 102417680A CN 2011103885516 A CN2011103885516 A CN 2011103885516A CN 201110388551 A CN201110388551 A CN 201110388551A CN 102417680 A CN102417680 A CN 102417680A
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pvc
unleaded
lead
draining
tubing
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徐风飞
邓碧霞
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Guangdong Liansu Technology Industrial Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885—Screw or gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

本发明公开了一种无铅的排水用PVC-U管材及其制备方法，该管材由PVC树脂粉、有机重钙、OBS有机稳定剂、硬脂酸钙、PE蜡、抗冲剂、钛白粉和加工助剂混合而成。本发明所述管材不含铅，稳定性好，克服了现有PVC-U配方中存在的稳定剂含有铅、后期稳定性能差等问题，适于推广应用。

Description

一种无铅的排水用PVC-U管材及其制备方法
技术领域
本发明涉及排水塑胶管材领域，具体涉及一种无铅的排水用PVC-U管材及其制备方法。
背景技术
铅，一旦排入环境很长时间仍然在环境中滞留一段长久的时间，又对许多生命组织有较强的潜在性毒性，所以铅一直被列为强污染物范围。排水管用PVC-U配方中需要使用稳定剂。稳定性好的稳定剂中一般含有铅，容易造成污染；钙锌、稀土、有机锡是不含铅的稳定剂，但钙锌、稀土的后期稳定性不好，使用的话需要加入比较多的份量；有机锡长期接触会出现中毒症状，对生产工人健康危害。
PVC排水管材配方中的稳定剂，稳定性好的稳定剂中一般含有铅，容易造成污染；钙锌、稀土、有机锡是不含铅的稳定剂，但钙锌、稀土的后期稳定性不好，使用的话需要加入比较多的份量；有机锡长期接触会出现中毒症状，对生产工人健康危害。
发明内容
本发明的目的在于提供一种克服现有排水用PVC-U配方中稳定剂含有铅或后期稳定性能差的不足，采用OBS有机稳定剂，即不含铅、稳定性又好的无铅的排水用PVC-U管材。
本发明另一目的在于提供上述管材的制备方法。
本发明上述目的通过以下技术方案予以实现：
一种无铅的排水用PVC-U管材，由如下按照重量份数计的组分组成：PVC树脂粉100份、有机重钙3~10份、OBS有机稳定剂1~5份、硬脂酸钙0.5~1.5份、PE蜡0.2~1.5份、抗冲剂1~8份、钛白粉1~5份和加工助剂1~3份。
作为一种优选技术方案，所述PVC树脂粉为SG-5。
本发明所述无铅的排水用PVC-U管材的制备方法包括如下步骤：
（1）按照配比配好各组分；
（2）将各组分原料混合，在高速混合机中搅拌均匀，当混合料温度达到120℃时，放入低速混搅拌机，冷混搅拌，当混合料温度达到40℃时，卸料，待用；
（3）将混合好的物料投入锥形双螺杆挤出机中挤出加工成型，设定机筒加热温度130～170℃，口模温度150～200℃，螺杆转速15～50rpm，加料转速在5～50rpm；物料从口模挤出后经过水槽冷却后，根据所需长度切断，得到无铅的排水用PVC-U管材。
与现有技术相比，本发明具有如下有益效果：
本发明的配方采用OBS有机稳定剂，即不含铅、稳定性又好，
与传统的稳定剂相比，OBS具有价格竞争性，同时在性能方面作了某些改进。其中包括：低迁移性、低气味、挥发性有机化合物逸出性低、良好前期色相、极佳的透明性等。用OBS稳定剂加工的PVC制品还适合回收再生利用，进行二次加工。
具体实施方式
以下结合实施例来进一步解释本发明，但实施例并不对本发明做任何形式的限定。
一种无铅的排水用PVC-U配方的生产方法由如下步骤组成：
1、配好各组分的剂量；
2、将配好的各组分与PVC原料一起在高速混和机中搅拌均匀，当混合料温度达到120℃时，放入低速冷混搅拌机，冷混搅拌，当混合料温度达到40℃时，卸料，待用。
3、将混合好的物料投入锥形双螺杆挤出机中进行挤出加工成型，设定机筒加热温度130～170℃，口模温度150～200℃，螺杆转速15～50rpm，加料转速在5～50rpm。物料从口模挤出后经过水槽冷却后根据所需长度切断，即可得到一种无铅的排水用PVC-U管材。
根据该制备方法的三个实施例具体如下表1所示。
表1
Figure 2011103885516100002DEST_PATH_IMAGE001

Claims (3)

1. 一种无铅的排水用PVC-U管材，其特征在于由如下按照重量份数计的组分组成：PVC树脂粉100份、有机重钙3~10份、OBS有机稳定剂1~5份、硬脂酸钙0.5~1.5份、PE蜡0.2~1.5份、抗冲剂1~8份、钛白粉1~5份和加工助剂1~3份。
2. 根据权利要求1所述的无铅的排水用PVC-U管材，其特征在于所述PVC树脂粉为SG-5。
3. 权利要求1或2所述无铅的排水用PVC-U管材的制备方法，其特征在于包括如下步骤：
（1）按照配比配好各组分；
（2）将各组分原料混合，在高速混合机中搅拌均匀，当混合料温度达到120℃时，放入低速混搅拌机，冷混搅拌，当混合料温度达到40℃时，卸料，待用；
（3）将混合好的物料投入锥形双螺杆挤出机中挤出加工成型，设定机筒加热温度130～170℃，口模温度150～200℃，螺杆转速15～50rpm，加料转速在5～50rpm；物料从口模挤出后经过水槽冷却后，根据所需长度切断，得到无铅的排水用PVC-U管道。
CN2011103885516A 2011-11-30 2011-11-30 一种无铅的排水用pvc-u管材及其制备方法 Pending CN102417680A (zh)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103016853A (zh) * 2012-11-22 2013-04-03 南京联塑科技实业有限公司 一种多层防氧化排水管及制造方法
CN103739988A (zh) * 2013-12-11 2014-04-23 甘肃大禹节水集团股份有限公司 一种高抗冲耐液压灌溉pvc管材
CN103834120A (zh) * 2013-12-27 2014-06-04 甘肃三合塑胶科技有限公司 一种柔性upvc管材组合物及制备方法
CN105017682A (zh) * 2015-07-06 2015-11-04 江苏圣通环境工程有限公司 一种农用硬pvc薄壁管及其生产工艺
CN108329622A (zh) * 2018-03-20 2018-07-27 苏州新区特氟龙塑料制品厂 一种无铅pvc塑料及其制备方法
CN115110319A (zh) * 2022-06-15 2022-09-27 一汽丰田汽车(成都)有限公司长春丰越分公司 奶香味聚氯乙烯人造革及其制备方法

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103016853A (zh) * 2012-11-22 2013-04-03 南京联塑科技实业有限公司 一种多层防氧化排水管及制造方法
CN103739988A (zh) * 2013-12-11 2014-04-23 甘肃大禹节水集团股份有限公司 一种高抗冲耐液压灌溉pvc管材
CN103739988B (zh) * 2013-12-11 2016-08-31 甘肃大禹节水集团股份有限公司 一种高抗冲耐液压灌溉pvc管材
CN103834120A (zh) * 2013-12-27 2014-06-04 甘肃三合塑胶科技有限公司 一种柔性upvc管材组合物及制备方法
CN105017682A (zh) * 2015-07-06 2015-11-04 江苏圣通环境工程有限公司 一种农用硬pvc薄壁管及其生产工艺
CN108329622A (zh) * 2018-03-20 2018-07-27 苏州新区特氟龙塑料制品厂 一种无铅pvc塑料及其制备方法
CN115110319A (zh) * 2022-06-15 2022-09-27 一汽丰田汽车(成都)有限公司长春丰越分公司 奶香味聚氯乙烯人造革及其制备方法

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Application publication date: 20120418