CN101469107A - 一种良好表面、高流动玻纤增强pbt/abs复合材料 - Google Patents
一种良好表面、高流动玻纤增强pbt/abs复合材料 Download PDFInfo
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- 239000003365 glass fiber Substances 0.000 title claims description 46
- 239000002131 composite material Substances 0.000 title abstract description 7
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000000314 lubricant Substances 0.000 claims abstract description 8
- 238000001746 injection moulding Methods 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 229920003023 plastic Polymers 0.000 claims abstract description 3
- 239000004033 plastic Substances 0.000 claims abstract description 3
- 238000005303 weighing Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims abstract 2
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 claims description 28
- 239000011159 matrix material Substances 0.000 claims description 27
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical group CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 9
- 229920000642 polymer Polymers 0.000 claims description 8
- 230000002708 enhancing effect Effects 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 7
- 239000012752 auxiliary agent Substances 0.000 claims description 6
- 239000011258 core-shell material Substances 0.000 claims description 5
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical group C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- 239000003112 inhibitor Substances 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 238000013022 venting Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- 239000003063 flame retardant Substances 0.000 claims description 2
- 239000011152 fibreglass Substances 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 6
- 239000004201 L-cysteine Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- NYTIGAIUQKZUHK-UHFFFAOYSA-N 2,6-ditert-butylphenol;propanamide Chemical compound CCC(N)=O.CC(C)(C)C1=CC=CC(C(C)(C)C)=C1O NYTIGAIUQKZUHK-UHFFFAOYSA-N 0.000 description 1
- HXLAEGYMDGUSBD-UHFFFAOYSA-N 3-[diethoxy(methyl)silyl]propan-1-amine Chemical compound CCO[Si](C)(OCC)CCCN HXLAEGYMDGUSBD-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- -1 pentaerythritol ester Chemical class 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
Classifications
-
- 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
- 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
- B29C48/94—Lubricating
- B29C48/95—Lubricating by adding lubricant to the moulding 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
- 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
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- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Compositions Of Macromolecular Compounds (AREA)
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Abstract
本发明公开了一种良好表面、高流动玻璃纤维增强PBT/ABS复合材料及其制备方法,按重量比包括以下组分:PBT树脂10~65%,ABS树脂10~65%,相容剂1~10%,玻璃纤维10~40%,润滑剂1~5%,其他助剂0.5~4%。该方法具体步骤如下:称取除玻璃纤维外的各种材料,在混料机混合3-5分钟,将混匀的物料加入双螺杆挤出机,其中玻璃纤维从第一个排气口加入,自喂料口至挤出模头温度分别是160~180℃,190~220℃,210~240℃,220~250℃,210~240℃,主机转速是20~50赫兹,然后用塑料注塑机制样。该复合材料表面光泽好,性能好,易加工。
Description
技术领域
本发明涉及一种PBT/ABS复合材料,具体为一种良好表面、高流动玻璃纤维增强PBT/ABS复合材料及其制备方法,属于高分子复合材料领域。
背景技术
PBT树脂是一种结晶聚合物,具有优异的机械性能、电性能、以及其他的物理化学性能,尤其是流动性好,易于加工,被广泛地应用于汽车、电子电器行业。但是,对于一些制品尺寸稳定性很高、表面要求严格的产品而言,需要加入ABS树脂和玻璃纤维来调节。
众所周知,ABS有很好的弹性,是一种非结晶聚合物,要使这两种不同结晶态的聚合物很好的相容,一般都是加入一定量的相容剂,如Katsumata等在USP.5891943中聚烯烃上接枝聚合物(PMMA,AN/S,PS等)表面光洁,性能很好;Orikasa等在USP.4983663中用丁烯-甲基丙烯酸甘油酯接枝在丙烯腈与苯乙烯共聚物上作为相容剂,冲击能达到64KJ/m2,热变形温度在160℃以上。
上述这些关于玻璃纤维增强PBT/ABS专利所提供的技术从不同的角度解决了相容性或是表面平整性问题。但没有同时解决这两方面的问题。
发明内容
本发明所要解决的技术问题在于克服现有技术中存在的上述不足,提供一种良好表面、高流动玻璃纤维增强PBT/ABS复合材料及其制备方法。
其发明目的可以通过以下技术方案得以实现。
一种良好表面、高流动玻璃纤维增强PBT/ABS复合材料,包括以下组分(重量比):
ABS树脂 10~65%
PBT树脂 10~65%
相容剂 1~10%
玻璃纤维 10~40%
润滑剂 1~5%
其他助剂 0.5~4%
本发明所述的良好表面、高流动玻璃纤维增强PBT/ABS复合材料中PBT树脂的相对粘度为0.5~1.2。
本发明所述的良好表面、高流动玻璃纤维增强PBT/ABS复合材料中ABS树脂为苯乙烯-丁二烯-丙烯睛共聚物,其中丁二烯的含量为30~60%。
本发明所述的良好表面、高流动玻璃纤维增强PBT/ABS复合材料中相容剂为核壳聚合物。
本发明所述的良好表面、高流动玻璃纤维增强PBT/ABS复合材料中玻璃纤维是无碱玻璃纤维、中碱玻璃纤维或高强玻璃纤维,其纤维直径为5~24μm。
本发明所述的良好表面、高流动玻璃纤维增强PBT/ABS复合材料中润滑剂是乙撑双硬脂酰胺。
本发明通过添加润滑剂改善树脂的流动特性,抑制玻璃纤维在制件表面外露,改善加工性能,同时添加极性核壳聚合物作为相容剂,提高PBT和ABS树脂之间的相容性,达到提高复合材料性能的目的。
本发明所述的良好表面、高流动玻璃纤维增强PBT/ABS复合材料中的其他助剂是硅烷偶联剂、抗氧剂、颜色助剂或阻燃剂,所述的硅烷偶联剂是γ-氨丙基三乙氧基硅烷、γ-氨丙基甲基二乙氧基硅烷和g-(2,3-环氧丙氧)丙基三甲氧基硅烷;所述的抗氧剂是四[β-(3,5-二叔丁基-4-羟基苯基)丙酸]季戊四醇酯、N,N’-六亚甲基双(3,5-二叔丁基-4-羟基苯丙酰胺)和亚磷酸三(2,4-二叔丁基苯基)酯。
制备良好表面、高流动玻璃纤维增强PBT/ABS复合材料的具体步骤如下:按上述组份配比称取各种材料(玻璃纤维除外),在混料机混合均匀,混合时间一般为3-5分钟,然后将混合均匀的物料加入双螺杆挤出机(玻璃纤维从第一个排气口加入),温度分别是(自喂料口至挤出模头):160~180℃,190~220℃,210~240℃,220~250℃,210~240℃。主机转速是20~50赫兹。然后用塑料注塑机制得各种所需产品。
本发明所述的良好表面、高流动玻璃纤维增强PBT/ABS复合材料,表面光泽好,性能好,易加工。
具体实施方式
下面通过实施例和对比例进一步说明本发明,在不违反本发明的宗旨下,本发明应不限于以下实验例具体明示的内容。
实施例和对比例所用原材料如下:
PBT树脂,PBT-4500,三房巷公司;
ABS树脂,ABS-GP22,BASF公司;
核壳聚合物,E-920,ARKEMA公司;
马来酸酐接枝ABS,MAH-ABS,宁波能之光材料公司
玻璃纤维,ER13-2000-988,桐乡巨石集团;
润滑剂,乙撑双硬脂酰胺(EBS),上海宁成
硅烷偶联剂,KH-550,南京曙光化工有限公司;
抗氧剂,168和1010,瑞士汽巴精化公司。
按重量百分比称起各种原材料(玻璃纤维除外),在高速混合器中干混3~5分钟之后;将混合好的原料置于双螺杆机中(玻璃纤维在排气口加入),经熔融挤出,造粒。将得到的切片粒子在105℃的鼓风烘箱中干燥4小时后,用宁波海天HT1150B注射成型机制样。
材料的力学性能测试按照ISO标准测试:测试拉伸强度的样条是170*10*4mm,按ISO527进行,速度为50mm/min;测试弯曲模量的样条是80*10*4mm,按ISO178进行,速度为2mm/min;测试缺口冲击强度的样条是80*10*4mm,按ISO 179进行,V型缺口,摆锤为4J;测试热变形温度的样条是120*10*4mm,按ISO75进行,负荷为1.82MPa,升温速度为120℃/h;用来观察表面的样条是150*100*3mm,分为“粗糙、一般、光滑”三个等级;流动性的测试按照ISO 1133标准,用粒子,在265℃,5公斤负荷测定材料的熔体流动指数。
实施例1~4
复合材料中各种原材料的重量百分比如表1所示,双螺杆挤出机的温度分别是(自喂料口至挤出模头):170℃,200℃,215℃,225℃,230℃。主机转速是30赫兹。
表1 实施例1-4配方及材料性能表
1 | 2 | 3 | 4 | |
PBT-4500(%) | 40 | 35 | 30 | 25 |
ABS-GP22(%) | 41 | 36 | 31 | 26 |
E-920(%) | 5 | 5 | 5 | 5 |
玻璃纤维(%) | 10 | 20 | 30 | 40 |
EBS(%) | 3 | 3 | 3 | 3 |
KH-550(%) | 0.5 | 0.5 | 0.5 | 0.5 |
168 | 0.3 | 0.3 | 0.3 | 0.3 |
1010 | 0.2 | 0.2 | 0.2 | 0.2 |
拉伸强度(MPa) | 72 | 91 | 101 | 132 |
弯曲模量(MPa) | 4230 | 5340 | 7250 | 8620 |
缺口冲击强度(kJ/m^2) | 5.6 | 6.8 | 7.2 | 7.5 |
热变形温度(℃) | 106 | 122 | 139 | 156 |
表面 | 光滑 | 光滑 | 光滑 | 一般 |
熔体流动指数(g/10min) | 68 | 65 | 55 | 49 |
实施例5~7
复合材料中各种原材料的重量百分比如表2所示,双螺杆挤出机的温度分别是(自喂料口至挤出模头):170℃,200℃,215℃,225℃,230℃。主机转速是30赫兹。
表2 实施例5-7配方及材料性能表
5 | 6 | 7 | |
PBT-4500(%) | 37 | 34 | 33 |
ABS-GP22(%) | 37 | 34 | 33 |
E-920(%) | 2 | 8 | 10 |
玻璃纤维(%) | 20 | 20 | 20 |
EBS(%) | 3 | 3 | 3 |
KH-550(%) | 0.5 | 0.5 | 0.5 |
168(%) | 0.3 | 0.3 | 0.3 |
1010(%) | 0.2 | 0.2 | 0.2 |
拉伸强度(MPa) | 96 | 87 | 83 |
弯曲模量(MPa) | 5780 | 5140 | 5010 |
缺口冲击强度(kJ/m^2) | 6.3 | 7.9 | 10.4 |
热变形温度(℃) | 126 | 115 | 107 |
表面 | 光滑 | 光滑 | 光滑 |
熔体流动指数(g/10min) | 66 | 63 | 59 |
实施例8~11
复合材料中各种原材料的重量百分比如表3所示,双螺杆挤出机的温度分别是(自喂料口至挤出模头):170℃,200℃,215℃,225℃,230℃。主机转速是30赫兹。
表3 实施例8-11配方及材料性能表
8 | 9 | 10 | 11 | |
PBT-4500(%) | 36.5 | 36 | 35 | 34.5 |
PC-110(%) | 36.5 | 36 | 35 | 34.5 |
E-920(%) | 5 | 5 | 5 | 5 |
玻璃纤维(%) | 20 | 20 | 20 | 20 |
EBS(%) | 1 | 2 | 4 | 5 |
KH-550(%) | 0.5 | 0.5 | 0.5 | 0.5 |
168(%) | 0.3 | 0.3 | 0.3 | 0.3 |
1010(%) | 0.2 | 0.2 | 0.2 | 0.2 |
拉伸强度(MPa) | 90.6 | 91.8 | 92.4 | 92.7 |
弯曲模量(MPa) | 5360 | 5350 | 5410 | 5390 |
缺口冲击强度(kJ/m^2) | 6.9 | 6.9 | 7.0 | 7.4 |
热变形温度(℃) | 124 | 122.9 | 125 | 121 |
表面 | 光滑 | 光滑 | 光滑 | 光滑 |
熔体流动指数(g/10min) | 57 | 61 | 66 | 69 |
实施例12~15
复合材料中各种原材料的重量百分比如表4所示,双螺杆挤出机的温度分别是(自喂料口至挤出模头):170℃,200℃,215℃,225℃,230℃。主机转速是30赫兹。
表4 实施例8-11配方及材料性能表
12 | 13 | 14 | 15 | |
PBT-4500(%) | 61 | 11 | 51 | 11 |
ABS(%) | 10 | 60 | 10 | 50 |
E-920(%) | 5 | 5 | 5 | 5 |
玻璃纤维(%) | 20 | 20 | 30 | 30 |
EBS(%) | 3 | 3 | 3 | 3 |
KH-550(%) | 0.5 | 0.5 | 0.5 | 0.5 |
168(%) | 0.3 | 0.3 | 0.3 | 0.3 |
1010(%) | 0.2 | 0.2 | 0.2 | 0.2 |
拉伸强度(MPa) | 106 | 87 | 119 | 93 |
弯曲模量(MPa) | 6170 | 5140 | 7560 | 6230 |
缺口冲击强度(kJ/m^2) | 6.2 | 7.6 | 6.4 | 9.8 |
热变形温度(℃) | 135 | 118.5 | 167 | 112 |
表面 | 光滑 | 光滑 | 一般 | 光滑 |
熔体流动指数(g/10min) | 71 | 62 | 67 | 56 |
对比例1~4
复合材料中各种原材料的重量百分比如表5所示,双螺杆挤出机的温度分别是(自喂料口至挤出模头):170℃,200℃,215℃,225℃,230℃。主机转速是30赫兹。
表5 对比例1-4配方及材料性能表
1 | 2 | 3 | 4 | |
PBT-4500(%) | 60 | 40 | 20 | 31 |
ABS(%) | 19 | 39 | 59 | 30 |
MAH-ABS(%) | 5 | |||
玻璃纤维(%) | 20 | 20 | 20 | 20 |
EBS(%) | 3 | |||
KH-550(%) | 0.5 | 0.5 | 0.5 | 0.5 |
168(%) | 0.3 | 0.3 | 0.3 | 0.3 |
1010(%) | 0.2 | 0.2 | 0.2 | 0.2 |
拉伸强度(MPa) | 62 | 69 | 63 | 81 |
弯曲模量(MPa) | 5080 | 4600 | 4320 | 4660 |
缺口冲击强度(kJ/m^2) | 4.5 | 4.9 | 5.5 | 5.9 |
热变形温度(℃) | 113 | 111 | 92.6 | 106 |
表面 | 粗糙 | 粗糙 | 粗糙 | 一般 |
熔体流动指数(g/10min) | 41 | 38 | 32 | 51 |
从上述数据可以看出:通过添加润滑剂改善树脂的流动特性,抑制玻璃纤维在制件表面外露,改善加工性能,同时添加极性核壳聚合物作为相容剂,提高PBT和ABS树脂之间的相容性,达到提高复合材料性能的目的。
Claims (8)
1、一种良好表面、高流动玻璃纤维增强PBT/ABS复合材料,按重量百分数该复合材料包括以下组分:
PBT树脂 10~65%
ABS树脂 10~65%
相容剂 1~10%
玻璃纤维 10~40%
润滑剂 1~5%
其他助剂 0.5~4%。
2、根据权利要求1所述的一种良好表面、高流动玻璃纤维增强PBT/ABS复合材料,其特征在于:所述的PBT树脂特征粘数为0.5~1.2。
3、根据权利要求1所述的一种良好表面、高流动玻璃纤维增强PBT/ABS复合材料,其特征在于:所述的ABS树脂为苯乙烯-丁二烯-丙烯睛共聚物,其中丁二烯的含量为30~60%。
4、根据权利要求1所述的一种良好表面、高流动玻璃纤维增强PBT/ABS复合材料,其特征在于:所述的相容剂是核壳聚合物。
5、根据权利要求1所述的一种良好表面、高流动玻璃纤维增强PBT/ABS复合材料,其特征在于:所述的玻璃纤维是无碱玻璃纤维、中碱玻璃纤维、高强玻璃纤维中的一种或几种,其纤维直径为5~24μm。
6、根据权利要求1所述的一种良好表面、高流动玻璃纤维增强PBT/ABS复合材料,其特征在于:所述的润滑剂为乙撑双硬脂酰胺。
7、根据权利要求1所述的一种良好表面、高流动玻璃纤维增强PBT/ABS复合材料,其特征在于:所述的其他助剂是硅烷偶联剂、阻燃剂、抗氧剂或颜色助剂。
8、一种制备权利要求1所述良好表面、高流动玻璃纤维增强PBT/ABS复合材料的方法,具体步骤如下:
按权利要求1所述组份配比称取除玻璃纤维外的各种材料,在混料机混合3-5分钟,然后将混合均匀的物料加入双螺杆挤出机,其中玻璃纤维从第一个排气口加入,自喂料口至挤出模头温度分别是160~180℃,190~220℃,210~240℃,220~250℃,210~240℃,主机转速是20~50赫兹,用塑料注塑机制取。
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