CN103059457B - 一种含有改性粉煤灰的pvc管材及其制备方法 - Google Patents

一种含有改性粉煤灰的pvc管材及其制备方法 Download PDF

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CN103059457B
CN103059457B CN201210534461.8A CN201210534461A CN103059457B CN 103059457 B CN103059457 B CN 103059457B CN 201210534461 A CN201210534461 A CN 201210534461A CN 103059457 B CN103059457 B CN 103059457B
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coal ash
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CN103059457A (zh
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强健娜
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Jiangsu Taixie Intelligent Technology Co ltd
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An Huihai Na Chuan Su Ye Science And Technology 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
    • B29C48/03—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
    • B29C48/25—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)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

本发明公开了一种含有改性粉煤灰的pvc管材及其制备方法，其组成原料的重量份为：SG-5型PVC树脂50-55、双酚A型聚碳酸酯40-45、聚-4-甲基-1-戊烯0.8-1.2、二茂铁2-4、乙撑基双硬酯酰胺1.4-1.8、三盐基硫酸铅1.3-1.5、改性粉煤灰1-2、钛白粉35-38、抗氧剂1010？？1.4-1.6、环氧化甘油三酸酯0.5-0.7和苯胺甲基三乙氧基硅烷0.9-1.1；本发明通过对配方进一步优化，在配方中添加了改性粉煤灰成分，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，韧性好，硬度低的缺点；而且制备方法简单，可以有效的应用于各行各业中。

Description

一种含有改性粉煤灰的pvc管材及其制备方法
技术领域
本发明涉及pvc管材生产领域，尤其涉及一种含有改性粉煤灰的pvc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，提供一种含有改性粉煤灰的pvc管材及其制备方法。
为实现上述目的，本发明采用如下技术方案：
含有改性粉煤灰的pvc管材，其组成原料的重量份为：SG-5型PVC树脂50-55、双酚A型聚碳酸酯40-45、聚-4-甲基-1-戊烯0.8-1.2、二茂铁2-4、乙撑基双硬酯酰胺1.4-1.8、三盐基硫酸铅1.3-1.5、改性粉煤灰1-2、钛白粉35-38、抗氧剂10101.4-1.6、环氧化甘油三酸酯0.5-0.7和苯胺甲基三乙氧基硅烷0.9-1.1。
含有改性粉煤灰的pvc管材，其组成原料的重量份为：SG-5型PVC树脂52、双酚A型聚碳酸酯42、聚-4-甲基-1-戊烯1、二茂铁3、乙撑基双硬酯酰胺1.6、三盐基硫酸铅1.4、改性粉煤灰1.5、钛白粉36、抗氧剂10101.5、环氧化甘油三酸酯0.6和苯胺甲基三乙氧基硅烷1。
含有改性粉煤灰的pvc管材的制备方法，包括以下步骤：
（1）按组成原料的重量份称取各原料，在热混锅内加入SG-5型PVC树脂和双酚A型聚碳酸酯，加热2-3分钟，然后依次加入聚-4-甲基-1-戊烯、二茂铁、乙撑基双硬酯酰胺、三盐基硫酸铅、改性粉煤灰、钛白粉、抗氧剂1010、环氧化甘油三酸酯和苯胺甲基三乙氧基硅烷，反应5-7分钟；
（2）然后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165-175℃，模头温度为183-218℃，螺杆转速为500-550rpm；
（3）采用锥形双螺杆挤出机将所得的混合粒子挤出管材成型，即得含有改性粉煤灰的pvc管材，挤出机机筒温度为180-200℃，模头温度为185-210℃。
所述的改性粉煤灰的制备方法为：将粉煤灰放入13-15%氢氧化钠溶液浸泡2-3小时后，捞出，在53-58℃温度下烘干至含水量2-3%，后立即加入相当于其重量3-4%的液体石蜡混合均匀，然后，加入相当于其重量5-8%的氢氧化铝、5-8%的异丙基三（二辛基焦磷酸酰氧基）钛酸酯、1-2%的三聚磷酸钠、3-4%的铁矿尾渣，混合均匀，在60-70℃下3500-4000转/分搅拌30-50分钟，混合、烘干研磨为1.0-1.2μm粉末，得到改性粉煤灰。
本发明的优点：
本发明通过对配方进一步优化，在配方中添加了改性粉煤灰成分，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，韧性好，硬度低的缺点；而且制备方法简单，可以有效的应用于各行各业中。
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1：含有改性粉煤灰的pvc管材，其组成原料的重量份（公斤）为：SG-5型PVC树脂52、双酚A型聚碳酸酯42、聚-4-甲基-1-戊烯1、二茂铁3、乙撑基双硬酯酰胺1.6、三盐基硫酸铅1.4、改性粉煤灰1.5、钛白粉36、抗氧剂10101.5、环氧化甘油三酸酯0.6和苯胺甲基三乙氧基硅烷1。
含有改性粉煤灰的pvc管材的制备方法，包括以下步骤：
（1）按组成原料的重量份称取各原料，在热混锅内加入SG-5型PVC树脂和双酚A型聚碳酸酯，加热2-3分钟，然后依次加入聚-4-甲基-1-戊烯、二茂铁、乙撑基双硬酯酰胺、三盐基硫酸铅、改性粉煤灰、钛白粉、抗氧剂1010、环氧化甘油三酸酯和苯胺甲基三乙氧基硅烷，反应5-7分钟；
（2）然后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165-175℃，模头温度为183-218℃，螺杆转速为500-550rpm；
（3）采用锥形双螺杆挤出机将所得的混合粒子挤出管材成型，即得含有改性粉煤灰的pvc管材，挤出机机筒温度为180-200℃，模头温度为185-210℃。
改性粉煤灰的制备方法为：将粉煤灰放入15%氢氧化钠溶液浸泡3小时后，捞出，在53-58℃温度下烘干至含水量3%，后立即加入相当于其重量4%的液体石蜡混合均匀，然后，加入相当于其重量8%的氢氧化铝、5%的异丙基三（二辛基焦磷酸酰氧基）钛酸酯、1%的三聚磷酸钠、4%的铁矿尾渣，混合均匀，在60-70℃下3500-4000转/分搅拌30-50分钟，混合、烘干研磨为1.0-1.2μm粉末，得到改性粉煤灰。
上述实施例制得的pvc管材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 43 56.5
3 断裂伸长率，% ≥80 105 117
4 纵向回缩率，% ≤3.5 3.1 1.4
5 维卡软化温度，℃ ≥75 83 92
6 落锤冲击试验（20℃,2kg，2m），TIR ≤10% 5.5 1.45

Claims (2)

1.一种含有改性粉煤灰的pvc管材，其特征在于其组成原料的重量份为：SG-5型PVC树脂50-55、双酚A型聚碳酸酯40-45、聚-4-甲基-1-戊烯0.8-1.2、二茂铁2-4、乙撑基双硬酯酰胺1.4-1.8、三盐基硫酸铅1.3-1.5、改性粉煤灰1-2、钛白粉35-38、抗氧剂10101.4-1.6、环氧化甘油三酸酯0.5-0.7和苯胺甲基三乙氧基硅烷0.9-1.1；
所述的含有改性粉煤灰的pvc管材的制备方法，包括以下步骤：
（1）按组成原料的重量份称取各原料，在热混锅内加入SG-5型PVC树脂和双酚A型聚碳酸酯，加热2-3分钟，然后依次加入聚-4-甲基-1-戊烯、二茂铁、乙撑基双硬酯酰胺、三盐基硫酸铅、改性粉煤灰、钛白粉、抗氧剂1010、环氧化甘油三酸酯和苯胺甲基三乙氧基硅烷，反应5-7分钟；
（2）然后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165-175℃，模头温度为183-218℃，螺杆转速为500-550rpm；
（3）采用锥形双螺杆挤出机将所得的混合粒子挤出管材成型，即得含有改性粉煤灰的pvc管材，挤出机机筒温度为180-200℃，模头温度为185-210℃；所述的改性粉煤灰的制备方法为：将粉煤灰放入13-15%氢氧化钠溶液浸泡2-3小时后，捞出，在53-58℃温度下烘干至含水量2-3%，后立即加入相当于其重量3-4%的液体石蜡混合均匀，然后，加入相当于其重量5-8%的氢氧化铝、5-8%的异丙基三（二辛基焦磷酸酰氧基）钛酸酯、1-2%的三聚磷酸钠、3-4%的铁矿尾渣，混合均匀，在60-70℃下3500-4000转/分搅拌30-50分钟，混合、烘干研磨为1.0-1.2μm粉末，得到改性粉煤灰。
2.根据权利要求1所述的含有改性粉煤灰的pvc管材，其特征在于其组成原料的重量份为：SG-5型PVC树脂52、双酚A型聚碳酸酯42、聚-4-甲基-1-戊烯1、二茂铁3、乙撑基双硬酯酰胺1.6、三盐基硫酸铅1.4、改性粉煤灰1.5、钛白粉36、抗氧剂10101.5、环氧化甘油三酸酯0.6和苯胺甲基三乙氧基硅烷1。
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