CN101570627B - 一种透明pc/pet复合材料的制备方法 - Google Patents

一种透明pc/pet复合材料的制备方法 Download PDF

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CN101570627B
CN101570627B CN2009101308201A CN200910130820A CN101570627B CN 101570627 B CN101570627 B CN 101570627B CN 2009101308201 A CN2009101308201 A CN 2009101308201A CN 200910130820 A CN200910130820 A CN 200910130820A CN 101570627 B CN101570627 B CN 101570627B
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pet
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CN101570627A (zh
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余鹏
任萍
郝源增
郝建鑫
柴国丰
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GUANGZHOU SUPER-DRAGON ENGINEERING PLASTICS CO., LTD.
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GUANGZHOU JINGYING PLASTIC CO Ltd
JUSAILONG ENGINEERING PLASTICS Co Ltd CONGHUA
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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
    • B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/918—Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling
    • B29C48/9185—Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling in the direction of the stream of the material
    • 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
    • B29C2948/92514—Pressure
    • 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
    • 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
    • B29C2948/92904—Die; Nozzle zone
    • 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
    • B29C2948/92923—Calibration, after-treatment or cooling zone

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Abstract

本发明涉及高分子材料技术领域，属于一种透明PC/PET复合材料及其制备方法，该复合材料由下述组分质量份制备而成：PC(聚碳酸酯)70-90％，PET(聚对苯二甲酸乙二醇酯)10-30％，相容剂0-0.5％，透明剂0.1-0.3％，抗氧剂0-0.5％。本发明材料透光度＞80％，23℃下的悬臂梁缺口冲击强度10-55KJ/m2，弯曲模量2100-2400MPa，260℃、5Kg时的熔融指数10-30g/10min，0.45MPa热变形温度＞130℃。该透明PC/PET复合材料具有高透明度、高力学性能、耐热性及尺寸稳定性好的特点，在保证PC透明性和力学性能的同时，改善了PC的耐油性、耐溶剂性、耐磨损性、耐应力开裂和加工流动性。可广泛应用于家电、电子电器、建材、汽车等领域。

Description

一种透明PC/PET复合材料的制备方法
技术领域
本发明涉及高分子材料技术领域，具体涉及一种透明PC/PET复合材料的制备方法。 
背景技术
PC(聚碳酸酯)具有优异的透明性、力学强度、热稳定性，是五大通用工程塑料之一。然而PC存在熔体粘度高、成型加工难、不耐油和溶剂等缺点。PET(聚对苯二甲酸乙二醇酯)是结晶性材料，耐油性和耐溶剂性优异，然而PET单独使用时，存在耐热性差、力学强度不高等缺点。 
目前国内对PC/PET复合材料研究不多，尤其关于透明PC/PET复合材料几乎没有。如，中国专利《一种PC/PET合金的制备方法》，专利申请号：200710074569.2，报道了一种非透明PC/PET复合材料的制备方法；中国专利《一种PC/PET合金的制备方法》，专利申请号：200710019829.6，报道一种PC/PET复合材料的制备方法，该方法属于材料成型加工领域，加工过程较为复杂，需通过预结晶、干燥、混炼塑化、口模成型、冷却压光等工序制得PC/PET合金片材。该发明虽有提及合金材料透明性，但并没有提供相关数据且没有详细说明。因此，如何通过简易的加工工序制备出透明性高、力学强度优良的PC/PET复合材料，以替代PC用于对透明性、耐油耐溶剂性、耐热性较高的领域，将具有重要的实际应用价值，相关途径还未见报道。 
发明内容
本发明的目的是针对现有技术的不足而提供一种制备容易、低成本、透明性好、热稳定性佳、力学性能优异的透明PC/PET复合材料的制备方法。 
本发明的上述目的可以通过以下技术方案实现： 
一种透明PC/PET复合材料的制备方法，包括如下步骤： 
(1)以下组分按重量百分比为： 
(A)PC                70-90％； 
(B)PET               10-30％； 
(C)相容剂            0-0.5％； 
(D)透明剂            0.1-0.3％； 
(E)抗氧剂            0-0.5％； 
上述各组分配方树脂比例总和为100％； 
(2)将PC、PET树脂于110℃-120℃鼓风干燥3-6小时； 
(3)将干燥好的PC和PET树脂、相容剂、透明剂、抗氧剂依次加入搅拌机中，在300-500转/分的转速下搅拌混合3-5分钟； 
(4)将上述混合物加入双螺杆挤出机中，经熔融挤出造粒即得成品。加工工艺如下：螺杆挤出机一区温度200-215℃，二区温度220-240℃，三区温度220-240℃，四区温度220-240℃，五区温度200-220℃，六区温度225-245℃，机头温度225-245℃，压力为11-17MPa，螺杆转速为250-400rpm；水槽温度20-40℃；切粒机转速为600-1000rpm。 
所述的PC分子量为20000-30000g/mol。 
所述PET的特性粘度为0.6-1.0dl/g。 
所述相容剂为透明琥珀液体的丙烯酸酯类接枝物。 
所述的透明剂为芳基磷酸酯类、由梨糖醇类化合物中的一种或其混合物。 
所述的抗氧剂为为酚类抗氧剂、亚磷酸酯类抗氧剂、金属钝化剂中的任一种或两种以上的混合物。 
所述的相容剂为KO-311。 
所述的透明剂为芳基磷酸酯类化合物NA-21。 
所述的抗氧剂为酚类抗氧化剂1010。 
本发明所述配方及工艺制得的透明PC/PET复合材料采用ISO标准检测，性能如下： 
密度：                  1.21-1.25g/cm3
断裂伸长率：            150-250％ 
拉伸强度：              58-66MPa 
弯曲模量：              2100-2400MPa 
悬臂梁缺口冲击强度：    10-55KJ/m2
熔融指数：              10-30g/10min(260℃，5Kg) 
热变形温度(0.45MPa)     130-133℃ 
透光率：                ＞80％ 
其有益效果是：常规PC/PET复合材料由于PET的加入，影响了PC的透明性，阻碍该耐油、耐溶剂复合材料在透明制品上的应用。本发明通过透 明剂对PET晶区晶核的减小以提高复合材料的可见光透光率，提供一种透明PC/PET复合材料，可替代PC用于对透明材料的耐油、耐溶剂、耐热等要求较高的领域。 
具体实施方式
实施例1： 
下述组分按重量百分比为： 
(1)PC                89.1％； 
(2)PET               10％； 
(3)相容剂            0.5％； 
(4)透明剂            0.2％； 
(5)抗氧剂            0.2％； 
先将PC、PET树脂于110℃鼓风干燥4小时，将干燥好的PC和PET树脂、相容剂、透明剂、抗氧剂依次加入搅拌机中，在500转/分的转速下搅拌混合3分钟。然后将上述混合物加入双螺杆挤出机中，经熔融挤出造粒即得成品。加工工艺如下：双螺杆挤出机一区温度210℃，二区温度230℃，三区温度230℃，四区温度230℃，五区温度200℃，六区温度235℃，机头温度240℃，压力为15MPa，螺杆转速为300rpm；水槽温度40℃；切粒机转速为800rpm； 
所得透明PC/PET复合材料经检测性能如下： 
密度：                  1.21g/cm3
断裂伸长率：            205％ 
拉伸强度：              65MPa 
弯曲模量：              2345MPa 
悬臂梁缺口冲击强度：    45KJ/m2
熔融指数：              17.8g/10min(260℃，5Kg) 
热变形温度(0.45MPa)     133℃ 
透光率：                83％。 
实施例2： 
下述组分按重量百分比为： 
(1)PC                80％； 
(2)PET               19.05％； 
(3)相容剂            0.5％； 
(4)透明剂            0.25％； 
(5)抗氧剂            0.2％； 
先将PC、PET树脂于110℃鼓风干燥4小时，将干燥好的PC和PET树脂、相容剂、透明剂、抗氧剂依次加入搅拌机中，在500转/分的转速下搅拌混合3分钟。然后将上述混合物加入双螺杆挤出机中，经熔融挤出造粒即得成品。加工工艺如下：双螺杆挤出机一区温度210℃，二区温度230℃，三区温度230℃，四区温度230℃，五区温度200℃，六区温度235℃，机头温度240℃，压力为15MPa，螺杆转速为300rpm；水槽温度40℃；切粒机转速为800rpm； 
所得透明PC/PET复合材料经检测性能如下： 
密度：                1.23g/cm3
断裂伸长率：               225％ 
拉伸强度：                 60MPa 
弯曲模量：                 2205MPa 
悬臂梁缺口冲击强度：       41KJ/m2
熔融指数：                 21.4g/10min(260℃，5Kg) 
热变形温度(0.45MPa)        132℃ 
透光率：                   83％。 

Claims (9)

1.一种透明PC/PET复合材料的制备方法，其特征在于：包括如下步骤，
(1)以下组分按重量百分比为：
(A)PC            70-90％；
(B)PET           10-30％；
(C)相容剂        0-0.5％；
(D)透明剂        0.1-0.3％；
(E)抗氧剂        0-0.5％；
上述各组分配方树脂比例总和为100％；
(2)将PC、PET树脂于110℃-120℃鼓风干燥3-6小时；
(3)将干燥好的PC和PET树脂、相容剂、透明剂、抗氧剂依次加入搅拌机中，在300-500转/分的转速下搅拌混合3-5分钟；
(4)将上述混合物加入双螺杆挤出机中，经熔融挤出造粒即得成品。加工工艺如下：双螺杆挤出机一区温度200-215℃，二区温度220-240℃，三区温度220-240℃，四区温度220-240℃，五区温度200-220℃，六区温度225-245℃，机头温度225-245℃，压力为11-17MPa，螺杆转速为250-400rpm；水槽温度20-40℃；切粒机转速为600-1000rpm。
2.根据权利要求1所述的一种透明PC/PET复合材料的制备方法，其特征在于：所述的PC分子量为20000-30000g/mol。 
3.根据权利要求1所述的一种透明PC/PET复合材料的制备方法，其特征在于：所述PET的特性粘度为0.6-1.0dl/g。
4.根据权利要求1所述的一种透明PC/PET复合材料的制备方法，其特征在于：所述相容剂为透明琥珀液体的丙烯酸酯类接枝物。
5.根据权利要求1所述的一种透明PC/PET复合材料的制备方法，其特征在于：所述的透明剂为芳基磷酸酯类、山梨糖醇类化合物中的一种或其混合物。
6.根据权利要求1所述的一种透明PC/PET复合材料的制备方法，其特征在于：所述的抗氧剂为为酚类抗氧剂、亚磷酸酯类抗氧剂、金属钝化剂中的任一种或两种以上的混合物。
7.根据权利要求4所述的一种透明PC/PET复合材料的制备方法，其特征在于：所述的相容剂为KO-311。
8.根据权利要求5所述的一种透明PC/PET复合材料的制备方法，其特征在于：所述的透明剂为芳基磷酸酯类化合物NA-21。
9.根据权利要求6所述的一种透明PC/PET复合材料的制备方法，其特征在于：所述的抗氧剂为酚类抗氧化剂1010。 
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