CN102911450A - 一种高抗冲pvc/acs管材及其制备方法 - Google Patents

一种高抗冲pvc/acs管材及其制备方法 Download PDF

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CN102911450A
CN102911450A CN2012103572465A CN201210357246A CN102911450A CN 102911450 A CN102911450 A CN 102911450A CN 2012103572465 A CN2012103572465 A CN 2012103572465A CN 201210357246 A CN201210357246 A CN 201210357246A CN 102911450 A CN102911450 A CN 102911450A
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CN102911450B (zh
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林传忍
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Nantong Qianqianhui Need Chemical Co ltd
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GUANYI 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • 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
    • B29C48/04—Particle-shaped
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C2948/92819—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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  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

本发明公开了一种高抗冲PVC/ACS管材及其制备方法，其由A料和B料等比例混合挤出造粒制备而成。本发明通过对配方进一步优化，使得在PVC管材的加工过程中能促进无机填料的分散，提高PVC熔体的流动性，还能提升拉伸强度与断裂伸长率，改变了聚乙烯制品在使用氯化聚乙烯时，韧性好，硬度低的缺点；本发明配方中在使用ACM、MBS、ACS树脂等成份后，所生产的管材的冷弯性能，抗冲击能力都有所提高。

Description

一种高抗冲PVC/ACS管材及其制备方法
技术领域
本发明涉及PVC管材生产领域，尤其涉及一种高抗冲PVC/ACS管材及其制备方法。
背景技术
PVC管材的主要成份为聚氯乙烯，另外加入增塑剂、抗老化剂等辅料来增加其耐热性、韧性、延展性等。PVC是当今世界上深受喜爱、颇为流行并且也被广泛应用的一种合成材料。PVC管材是一种成熟的管材，主要应用于给排水工程。PVC管材具有耐酸、耐碱、耐腐蚀性、强度高等优点，但是，目前大步分生产厂家生产出来的PVC管材抗冲击性能并不好，尤其在PVC制品的加工中的塑化过程，无机物的分散和PVC熔体的加工流动性一直是个难题。
发明内容
    本发明的目的是针对现有技术的不足提供一种高抗冲PVC/ACS管材及其制备方法，提高PVC管材的抗冲击性能。
 为实现上述目的，本发明采用如下技术方案：
一种高抗冲PVC/ACS管材由A料和B料等比例混合挤出造粒制备而成，所述A料、B料分别由下列重量份的原料挤出造粒而得：
A料：
聚氯乙烯SG-5 50-60、聚氯乙烯再生料40-50、活性钙20-30、氯化聚乙烯10-20、ABS高胶粉4-6、双巯基乙酸异辛酯二正辛基锡2-5、偶氮二甲酰胺0.2-0.4、ACM 5-10、异丙基三（二辛基焦磷酸酰氧基）钛酸酯0.3-0.5、抗氧剂1010 0.4-0.6、乙撑双硬脂酰胺0.3-0.5、双十二碳醇酯0.1-0.2、改性纳米粉5-10，
所述的改性纳米粉由下列方法制得：将橄榄石粉、白云石粉、滑石粉等比例混合后，在 600-700℃下烧损4-5小时，然后研磨成纳米粉末，拌入相当于粉体重量3-5%的双(二辛氧基焦磷酸酯基)乙撑钛酸酯拌搅均匀，烘干，粉碎成粉末；
B料：
聚氯乙烯SG-5 50-60、ACS树脂20-30、聚四氟乙烯10-15、ACM 4-8、MBS 4-8、偶氮二甲酰胺2-5、氯化聚乙烯10-20、苯胺甲基三乙氧基硅烷0.3-0.5、双十二碳醇酯0.1-0.3、抗氧剂168 0.2-0.5、聚乙烯蜡0.3-0.5、硬脂酸锌2-5、改性铝矾土5-10，
所述的改性铝矾土由下列方法制得： 先用15-20%盐酸浸泡铝矾土1-2小时，静置，澄清，离心，固体用水洗至中性，烘干后，加入相当于固体重量3-5%的氨丙基三乙氧基硅烷拌搅均匀，烘干，粉碎成粉末。
所述的高抗冲PVC/ACS管材的制备方法包括以下步骤：
第一步：分别制备A料、B料
一、A料的制备
（1）按配方比例称取各配方原料，将称好的原材料投入高速混合机内高速搅拌10-15 min，温度为80-90℃，待其水份充分蒸发后，经冷混机将物料降至40-50℃；
（2）将上述混合料加入到平行双螺杆挤出机中进行熔融共混并造粒即得A料，挤出机机筒温度为245-255℃，模头温度为252-268℃，螺杆转速为300-550rpm；
二、B料的制备
B料的制备采用同A料的相同的工艺进行造粒；
第二步：A料与B料混合造粒
将上述制得的A料和B料等比例加入到平行双螺杆挤出机中进行熔融共混并造粒即得混合粒子，挤出机机筒温度为265-275℃，模头温度为272-286℃，螺杆转速为300-550rpm；
第三步：挤出成型
采用锥形双螺杆挤出机将所得的混合粒子挤出成型，即得高抗冲PVC/ACS管材，挤出机机筒温度为276-298℃，模头温度为282-305℃；
第四步：后处理
    将所得的高抗冲PVC/ACS管材冷却至5—10℃定型，然后将定型的管材按所需要求进行切割，最后把切割好的产品进行包装，放入仓库待运即可。
本发明具有如下有益效果：
本发明通过对配方进一步优化，使得在PVC管材的加工过程中能促进无机填料的分散，提高PVC熔体的流动性，还能提升拉伸强度与断裂伸长率，改变了聚乙烯制品在使用氯化聚乙烯时，韧性好，硬度低的缺点；本发明配方中在使用ACM、MBS、ACS树脂等成份后，所生产的管材的冷弯性能，抗冲击能力都有所提高。
具体实施方式
下面结合实施例对本发明做进一步详细说明。
    实施例
 高抗冲PVC/ACS管材的制备方法包括以下步骤：
第一步：A料的制备
取下列重量份的原料：聚氯乙烯SG-5 60、聚氯乙烯再生料40、活性钙25、氯化聚乙烯15、ABS高胶粉6、双巯基乙酸异辛酯二正辛基锡5、偶氮二甲酰胺0.4、ACM 10、异丙基三（二辛基焦磷酸酰氧基）钛酸酯0.5、抗氧剂1010 0.6、乙撑双硬脂酰胺0.5、双十二碳醇酯0.2、改性纳米粉10，
其中，改性纳米粉由下列方法制得：将橄榄石粉、白云石粉、滑石粉等比例混合后，在 700℃下烧损5小时，然后研磨成纳米粉末，拌入相当于粉体重量5%的双(二辛氧基焦磷酸酯基)乙撑钛酸酯拌搅均匀，烘干，粉碎成粉末，
将称好的原材料投入高速混合机内高速搅拌15 min，温度为90℃，待其水份充分蒸发后，经冷混机将物料降至40℃，将上述混合料加入到平行双螺杆挤出机中进行熔融共混并造粒即得A料，挤出机机筒温度为248℃，模头温度为262℃，螺杆转速为400rpm；
第二步：B料的制备
取下列重量份的原料：聚氯乙烯SG-5 60、ACS树脂30、聚四氟乙烯15、ACM 8、MBS 8、偶氮二甲酰胺5、氯化聚乙烯20、苯胺甲基三乙氧基硅烷0.5、双十二碳醇酯0.3、抗氧剂168 0.5、聚乙烯蜡0.5、硬脂酸锌5、改性铝矾土10，
其中，改性铝矾土由下列方法制得：先用20%盐酸浸泡铝矾土2小时，静置，澄清，离心，固体用水洗至中性，烘干后，加入相当于固体重量5%的氨丙基三乙氧基硅烷拌搅均匀，烘干，粉碎成粉末，
将称好的原材料投入高速混合机内高速搅拌15 min，温度为90℃，待其水份充分蒸发后，经冷混机将物料降至40℃，将上述混合料加入到平行双螺杆挤出机中进行熔融共混并造粒即得B料，挤出机机筒温度为250℃，模头温度为262℃，螺杆转速为400rpm；
    第三步：A料与B料混合造粒
将上述制得的A料和B料等比例加入到平行双螺杆挤出机中进行熔融共混并造粒即得混合粒子，挤出机机筒温度为270℃，模头温度为284℃，螺杆转速为400rpm；
    第四步：挤出成型
采用锥形双螺杆挤出机将所得的混合粒子挤出成型，即得高抗冲PVC/ACS管材，挤出机机筒温度为280℃，模头温度为295℃；
    第五步：后处理
    将所得的高抗冲PVC/ACS管材冷却至5℃定型，然后将定型的管材按所需要求进行切割，最后把切割好的产品进行包装，放入仓库待运即可。
本发明的对比验证测试结果如下表：
序号 检测项目及单位 QB/T2480指标 普通PVC管材 本实施中的试样
1 外观 内外壁应光滑平整，无凹陷及分解变色线等表面缺陷 内外壁光滑平整，无凹陷及分解变色线等表面缺陷 内外壁光滑平整，无凹陷及分解变色线等表面缺陷
2 拉伸强度，Mpa ≥43 45 55
3 断裂伸长率，% ≥80 108 121
4 纵向回缩率，% ≤3.5 3.0 2.1
5 维卡软化温度，℃ ≥75 81 92
6 落锤冲击试验（20℃,2kg，2m），TIR ≤10% 6 2
从上表可以看出，与普通PVC管材相比，本发明所制得的PVC/ACS管材的拉伸强度、断裂伸长率和抗冲击性能都有所提高，且符合QB/T2480指标，能够广泛应用于建筑中所需的管道材料。

Claims (2)

1.一种高抗冲PVC/ACS管材，其特征在于，其由A料和B料等比例混合挤出造粒制备而成，所述A料、B料分别由下列重量份的原料挤出造粒而得：
A料：
聚氯乙烯SG-5 50-60、聚氯乙烯再生料40-50、活性钙20-30、氯化聚乙烯10-20、ABS高胶粉4-6、双巯基乙酸异辛酯二正辛基锡2-5、偶氮二甲酰胺0.2-0.4、ACM 5-10、异丙基三（二辛基焦磷酸酰氧基）钛酸酯0.3-0.5、抗氧剂1010 0.4-0.6、乙撑双硬脂酰胺0.3-0.5、双十二碳醇酯0.1-0.2、改性纳米粉5-10，
所述的改性纳米粉由下列方法制得：将橄榄石粉、白云石粉、滑石粉等比例混合后，在 600-700℃下烧损4-5小时，然后研磨成纳米粉末，拌入相当于粉体重量3-5%的双(二辛氧基焦磷酸酯基)乙撑钛酸酯拌搅均匀，烘干，粉碎成粉末；
B料：
聚氯乙烯SG-5 50-60、ACS树脂20-30、聚四氟乙烯10-15、ACM 4-8、MBS 4-8、偶氮二甲酰胺2-5、氯化聚乙烯10-20、苯胺甲基三乙氧基硅烷0.3-0.5、双十二碳醇酯0.1-0.3、抗氧剂168 0.2-0.5、聚乙烯蜡0.3-0.5、硬脂酸锌2-5、改性铝矾土5-10，
所述的改性铝矾土由下列方法制得： 先用15-20%盐酸浸泡铝矾土1-2小时，静置，澄清，离心，固体用水洗至中性，烘干后，加入相当于固体重量3-5%的氨丙基三乙氧基硅烷拌搅均匀，烘干，粉碎成粉末。
2.一种如权利要求1所述的高抗冲PVC/ACS管材的制备方法，其特征在于包括以下步骤：
第一步：分别制备A料、B料
A料的制备
（1）按配方比例称取各配方原料，将称好的原材料投入高速混合机内高速搅拌10-15 min，温度为80-90℃，待其水份充分蒸发后，经冷混机将物料降至40-50℃；
（2）将上述混合料加入到平行双螺杆挤出机中进行熔融共混并造粒即得A料，挤出机机筒温度为245-255℃，模头温度为252-268℃，螺杆转速为300-550rpm；
二、B料的制备
B料的制备采用同A料的相同的工艺进行造粒；
第二步：A料与B料混合造粒
将上述制得的A料和B料等比例加入到平行双螺杆挤出机中进行熔融共混并造粒即得混合粒子，挤出机机筒温度为265-275℃，模头温度为272-286℃，螺杆转速为300-550rpm；
第三步：挤出成型
采用锥形双螺杆挤出机将所得的混合粒子挤出成型，即得高抗冲PVC/ACS管材，挤出机机筒温度为276-298℃，模头温度为282-305℃；
第四步：后处理
    将所得的高抗冲PVC/ACS管材冷却至5—10℃定型，然后将定型的管材按所需要求进行切割，最后把切割好的产品进行包装，放入仓库待运即可。
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