CN103709485A - 一种聚乙烯防腐管道改性再生专用料及其制备方法 - Google Patents

一种聚乙烯防腐管道改性再生专用料及其制备方法 Download PDF

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CN103709485A
CN103709485A CN201310734992.6A CN201310734992A CN103709485A CN 103709485 A CN103709485 A CN 103709485A CN 201310734992 A CN201310734992 A CN 201310734992A CN 103709485 A CN103709485 A CN 103709485A
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polyethylene
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陈海
郭乾蕴
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HUBEI JINKE ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
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Abstract

本发明涉及一种聚乙烯防腐管道改性再生专用料及其制备方法，属于废旧聚乙烯回收利用技术领域。该改性再生专用料是由聚乙烯、回收聚乙烯、增韧剂、玻璃微珠、炭黑、抗氧剂300、助抗氧剂DLTP、紫外光吸收剂UV-531和白矿油原料，通过混合、挤出等工序制得。有效降低了聚乙烯防腐管道制造成本，解决了现有聚乙烯废料日益增多，不仅对环境造成污染，而且对资源形成极大浪费的问题。对节约资源、降低生产成本、保护环境等具有积极的意义。

Description

一种聚乙烯防腐管道改性再生专用料及其制备方法
技术领域
本发明涉及一种聚乙烯防腐管道改性再生专用料及其制备方法，属于废旧聚乙烯回收利用技术领域。
背景技术
高密度聚乙烯具有良好的耐热性和耐寒性，化学稳定性好，还具有较高的刚性和韧性，机械强度好，介电性能，耐环境应力开裂性亦较好。可广泛用于制备包装薄膜、绳索、编织网、渔网、水管、胶箱、周转箱、挤出吹塑容器、中空制品和瓶子等。由于其广泛的使用，导致聚乙烯废料日益增多，不仅对环境造成污染，而且对资源形成了极大的浪费。在聚乙烯防腐管道中，消耗最大，成本最高的聚乙烯，约占原材料总成本的70%，控制关键因素为聚乙烯原材料的成本。因此，回收并充分利用废旧聚乙烯不仅可节约生产成本，并且还可为生产环境友好型新材料开辟途径。
发明内容
本发明的目的在于：提供一种可有效降低聚乙烯防腐管道制造成本，解决现有聚乙烯废料日益增多，不仅对环境造成污染，而且对资源形成极大浪费问题的聚乙烯防腐管道改性再生专用料及其制备方法。
本发明的技术方案是：
一种聚乙烯防腐管道改性再生专用料，其特征在于，它是由下列重量百分比的原料构成的：
聚乙烯                    10%~70%
回收聚乙烯                15%~80%
增韧剂                    5%~20%
玻璃微珠                    1~10% 
炭黑                       2%~3%
抗氧剂300                 0.1%~1%
助抗氧剂DLTP            0.1%~0.3%
紫外光吸收剂UV531        0.1%~1%
白矿油                    0.6%~1.2% 
所述的回收聚乙烯为废旧的聚乙烯经破碎、清洗、甩干、均化后采用双阶单螺杆挤出冷切得到的颗粒料；
 所述的增韧剂为乙丙橡胶（EPR）、三元乙丙橡胶（EPDM）、聚烯烃弹性体（POE）中的任一种；
所述的玻璃微珠为空心玻璃珠，粒径为2.5微米。
所述的炭黑为槽法炭黑，粒径为24纳米。
所述的抗氧剂300为4,4'-硫代双(6-叔丁基-3-甲基苯酚)或4,4'-硫代双(6-叔丁基间甲酚)。
所述的助抗氧剂DLTP为硫代二丙酸二月桂酯。
所述的紫外光吸收剂UV531为2-羟基-4-正辛氧基二苯甲酮。
上述聚乙烯防腐管道改性再生专用料的制备方法为：
 1）、首先将聚乙烯、回收聚乙烯和增韧剂按百分比放入搅拌装置中混合，再按百分比加入白矿油并高速搅拌3—5分钟；
 2）、高速搅拌3—5分钟后，再按百分比依次加入玻璃微珠、炭黑、抗氧剂300、助抗氧剂DLTP和紫外光吸收剂UV531，然后在高速搅拌条件下使其混合均匀，混合时间为5—10分钟，制得混配物料；
3）、将混配物料加入到双螺杆挤出机中，利用挤出机将混配物料挤出呈条状物品，经冷切后成颗粒料；得聚乙烯防腐管道改性再生专用料成品；双螺杆挤出机各部分温度分别设置为，一区180℃，二区180℃，三区190℃，四区190℃，五区200℃，六区200℃，七区200℃，八区200℃，九区200℃，机头190℃。
本发明具有以下优点：
（1）本发明的配方以废旧聚乙烯回收料为基体，大幅度地降低了产品成本，并且制备简易，易于实现工业化生产。还能很好地解决废旧塑料带来的环境污染、资源浪费等问题。
（2）本发明所提供的专用料主要用于聚乙烯防腐管道料，具有广阔的开发利用前景，并能产生良好的社会效益和经济效益。
（3）本发明通过双阶单螺杆使废聚乙烯片料制成颗粒料，所有组分在混料机中，易于混合均匀，从而保证成品的质量。
（4）本发明所制的成品具有耐候，耐热，化学稳定性好，综合力学性能好，介电性能好，耐环境应力开裂性亦较好等突出优点，主要用于管道等领域。
（5）本发明采用双螺杆挤出机的螺杆长径比（L/D）为32，物料所受的剪切较均匀，螺杆输送能力较大，能耗低，挤出量比较稳定，物料在机筒停留时间分布窄从而保证所有组分分散混合更加均匀，进而有效的保证生产的效率和质量，更好地满足客户的需求。
（6）采用本发明的方法，不仅可有效的制备出合格的成品，并且操作过程中相当简单，适用于推广应用。
具体实施方式
实施例1：
首先按重量百分比称取各原料（单位：千克）
聚乙烯                           15
回收聚乙烯                     70
三元乙丙橡胶                  6
玻璃微珠                           5
炭黑                                 2.2
4,4'-硫代双(6-叔丁基-3-甲基苯酚)        0.45
助抗氧剂DLTP                      0.25
紫外光吸收剂UV531            0.3
白矿油                               0.8 
 将聚乙烯、回收聚乙烯和三元乙丙橡胶按上述重量放入搅拌装置中混合，再按上述重量加入白矿油并高速搅拌3分钟。高速搅拌3分钟后，再按上述重量依次加入玻璃微珠、炭黑、4,4'-硫代双(6-叔丁基-3-甲基苯酚)、助抗氧剂DLTP、紫外光吸收剂UV531，然后在高速搅拌条件下使其混合均匀，混合时间为5分钟，制得混配物料。将混配物料加入到双螺杆挤出机中，利用挤出机将混配物料挤出呈条状物品，经冷切后成颗粒料；该颗粒料即为聚乙烯防腐管道改性再生专用料成品。
实施例2：
首先按重量百分比称取各原料（单位：千克）
聚乙烯                         40
回收聚乙烯                      38
乙丙橡胶                        12
玻璃微珠                         6
炭黑                            2.1
4,4'-硫代双(6-叔丁基间甲酚)       0.35
助抗氧剂DLTP                  0.15
紫外光吸收剂UV531              0.5
白矿油                      0.9 
将聚乙烯、回收聚乙烯和乙丙橡胶按上述重量放入搅拌装置中混合，再按上述重量加入白矿油并高速搅拌5分钟。高速搅拌5分钟后，再按上述重量依次加入玻璃微珠、炭黑、4,4'-硫代双(6-叔丁基间甲酚)、助抗氧剂DLTP、紫外光吸收剂UV531，然后在高速搅拌条件下使其混合均匀，混合时间为10分钟，制得混配物料。将混配物料加入到双螺杆挤出机中，利用挤出机将混配物料挤出呈条状物品，经冷切后成颗粒料；该颗粒料即为聚乙烯防腐管道改性再生专用料成品。
实施例3：
首先按重量百分比称取各原料（单位：千克）
聚乙烯                              20
回收聚乙烯                       52
聚烯烃弹性体                  15
玻璃微珠                           8
炭黑                                2.5
4,4'-硫代双(6-叔丁基-3-甲基苯酚)       0.6
助抗氧剂DLTP                     0.3
紫外光吸收剂UV531           0.6
白矿油                                 1 
将聚乙烯、回收聚乙烯和聚烯烃弹性体按上述重量放入搅拌装置中混合，再按上述重量加入白矿油并高速搅拌4分钟。高速搅拌4分钟后，再按上述重量依次加入玻璃微珠、炭黑、4,4'-硫代双(6-叔丁基-3-甲基苯酚)、助抗氧剂DLTP、紫外光吸收剂UV531，然后在高速搅拌条件下使其混合均匀，混合时间为7分钟，制得混配物料。将混配物料加入到双螺杆挤出机中，利用挤出机将混配物料挤出呈条状物品，经冷切后成颗粒料；该颗粒料即为聚乙烯防腐管道改性再生专用料成品。
实施例4：
按重量百分比称取各原料（单位：千克）
聚乙烯                         35
回收聚乙烯                     46
聚烯烃弹性体                   10
玻璃微珠                       4
炭黑                           2
4,4'-硫代双(6-叔丁基间甲酚)     0.48
助抗氧剂DLTP                0.32
紫外光吸收剂UV531            1
白矿油                        1.2 
将聚乙烯、回收聚乙烯和聚烯烃弹性体按上述重量放入搅拌装置中混合，再按上述重量加入白矿油并高速搅拌5分钟。高速搅拌5分钟后，再按上述重量依次加入玻璃微珠、炭黑、4,4'-硫代双(6-叔丁基间甲酚)、助抗氧剂DLTP、紫外光吸收剂UV531，然后在高速搅拌条件下使其混合均匀，混合时间为8分钟，制得混配物料。将混配物料加入到双螺杆挤出机中，利用挤出机将混配物料挤出呈条状物品，经冷切后成颗粒料；该颗粒料即为聚乙烯防腐管道改性再生专用料成品。
实施例5：
首先按重量百分比称取各原料（单位：千克）
聚乙烯                           30
回收聚乙烯                   58
三元乙丙橡胶                 5
玻璃微珠                         3
炭黑                              2.9
4,4'-硫代双(6-叔丁基-3-甲基苯酚)    0.18
助抗氧剂DLTP                    0.12
紫外光吸收剂UV531          0.2
白矿油                            0.6 
将聚乙烯、回收聚乙烯和三元乙丙橡胶按上述重量放入搅拌装置中混合，再按上述重量加入白矿油并高速搅拌5分钟。高速搅拌5分钟后，再按上述重量依次加入玻璃微珠、炭黑、4,4'-硫代双(6-叔丁基-3-甲基苯酚)、助抗氧剂DLTP、紫外光吸收剂UV531，然后在高速搅拌条件下使其混合均匀，混合时间为10分钟，制得混配物料。将混配物料加入到双螺杆挤出机中，利用挤出机将混配物料挤出呈条状物品，经冷切后成颗粒料；该颗粒料即为聚乙烯防腐管道改性再生专用料成品。
使用本发明的聚乙烯防腐管道改性再生专用料成品制备出的聚乙烯防腐管道料符合国家标准。
本发明对上述各实施例的成品进行了性能检测，检测结果如下： 
                                                 
Figure 357174DEST_PATH_IMAGE001

Claims (1)

1.一种聚乙烯防腐管道改性再生专用料，其特征在于，它是由下列重量百分比的原料构成的：
聚乙烯                    10%~70%
回收聚乙烯                15%~80%
增韧剂                    5%~20%
玻璃微珠                    1~10% 
炭黑                       2%~3%
抗氧剂300                 0.1%~1%
助抗氧剂DLTP            0.1%~0.3%
紫外光吸收剂UV531        0.1%~1%
白矿油                    0.6%~1.2% ；
所述的回收聚乙烯为废旧的聚乙烯经破碎、清洗、甩干、均化后采用双阶单螺杆挤出冷切得到的颗粒料；
 所述的增韧剂为乙丙橡胶（EPR）、三元乙丙橡胶（EPDM）、聚烯烃弹性体（POE）中的任一种；
所述的玻璃微珠为空心玻璃珠，粒径为2.5微米；
所述的炭黑为槽法炭黑，粒径为24纳米；
所述的抗氧剂300为4,4'-硫代双(6-叔丁基-3-甲基苯酚)或4,4'-硫代双(6-叔丁基间甲酚)；
所述的助抗氧剂DLTP为硫代二丙酸二月桂酯；
所述的紫外光吸收剂UV531为2-羟基-4-正辛氧基二苯甲酮；
上述聚乙烯防腐管道改性再生专用料的制备方法为：
  1）、首先将聚乙烯、回收聚乙烯和增韧剂按百分比放入搅拌装置中混合，再按百分比加入白矿油并高速搅拌3—5分钟；
  2）、高速搅拌3—5分钟后，再按百分比依次加入玻璃微珠、炭黑、抗氧剂300、助抗氧剂DLTP和紫外光吸收剂UV531，然后在高速搅拌条件下使其混合均匀，混合时间为5—10分钟，制得混配物料；
3）、将混配物料加入到双螺杆挤出机中，利用挤出机将混配物料挤出呈条状物品，经冷切后成颗粒料；得聚乙烯防腐管道改性再生专用料成品；双螺杆挤出机各部分温度分别设置为，一区180℃，二区180℃，三区190℃，四区190℃，五区200℃，六区200℃，七区200℃，八区200℃，九区200℃，机头190℃。
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