CN110435069A - 一种pdcpd皮卡后箱盖总成的加工工艺 - Google Patents
一种pdcpd皮卡后箱盖总成的加工工艺 Download PDFInfo
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- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
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- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76822—Phase or stage of control
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2045/00—Use of polymers of unsaturated cyclic compounds having no unsaturated aliphatic groups in a side-chain, e.g. coumarone-indene resins or derivatives thereof, as moulding material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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Abstract
本发明公开了一种PDCPD皮卡后箱盖总成的加工工艺,包括以下步骤,S1、在料温机内部的两个压力储罐内分别投入一定量的DCPD单体;S2、取一定量的风干后的BF(竹纤维)粉末,与氢氧化钠溶液混合浸泡,再用纯水喷淋,降低PH到7‑8,最后在表面喷涂上硅烷偶联剂溶液,继续烘干12小时;S4、料温机通过定量泵将两个压力储罐内的混合溶液依次定量输送到后箱盖模具和尾门模具的模腔内,同时混合头在模腔内不断的冲撞挤压;S5、通过模温机对模具进行控温,模腔内的熔融材料逐渐成型,从而进行脱模操作。该工艺,在DCPD单体反应产生的PDCPD包覆在处理后的BF(竹纤维)外侧,大大增加了注塑成型后产品的力学性能,从而提升产品质量。
Description
技术领域
本发明属于汽车部件加工技术领域,具体涉及一种PDCPD皮卡后箱盖总成的加工工艺。
背景技术
聚双环戊二烯PDCPD为双环戊二烯(DCPD)之均聚物或共聚物。为一种交联三维网状结构工程塑料。密度1.03g/cm3,热变形温度120℃。在-40℃时不变性。耐一般酸、碱、有机溶剂,但不耐芳烃和卤代烃。弯曲模量1790~2070MPa。拉伸强度34MPa。玻璃化温度185.5℃。悬臂梁缺口冲击强度427J/m。在六氯化钨和一氯二乙基铝组成的催化剂存在下,由双环戊二烯开环歧化聚合制得。可用反应注射成型制成各种制件。
在车辆行驶过程中发生追尾时,车辆后箱盖总成一般都会受到比较猛烈的撞击,所以在汽车部件的制造业的发展中必须要对后箱盖总成的抗冲击、抗扭转等力学性能进行加强,所以需要不断的精进皮卡后箱盖总成的加工工艺。
发明内容
本发明的目的在于提供一种PDCPD皮卡后箱盖总成的加工工艺投入使用,以解决上述背景技术中提出的问题。
为实现上述目的,本发明提供如下技术方案:一种PDCPD皮卡后箱盖总成的加工工艺,包括以下步骤,
S1、在料温机内部的两个压力储罐内分别投入一定量的DCPD单体,加热两个压力储罐内的DCPD单体到140-170摄氏度,并且通过搅拌杆对DCPD单体进行不断的搅拌挤压;
S2、取一定量的风干后的BF(竹纤维)粉末,与氢氧化钠溶液混合浸泡,再用纯水喷淋,降低PH到7-8,最后在表面喷涂上硅烷偶联剂溶液,继续烘干 12小时;
S3、10-15分钟后,分别向两个压力储罐内加入添加剂和S2中制得的BF,同时投入抗氧化剂;
S4、料温机通过定量泵将两个压力储罐内的混合溶液依次定量输送到后箱盖模具和尾门模具的模腔内,同时混合头在模腔内不断的冲撞挤压;
S5、通过模温机对模具进行控温,模腔内的熔融材料逐渐成型,从而进行脱模操作;
S6、对成型的箱盖和尾门边缘进行打磨抛光等处理,最后通过箱盖后端的预埋孔将尾门转动装配到一起形成后箱盖总成。
优选的,在步骤S4中向模具进行注塑过程中料温机保证压力储罐内的混合物保持21-24摄氏度的恒温状态,且模温机控制模具的凹模温度在75-85摄氏度,凸模在55-60摄氏度。
优选的,在步骤S4中进行压力储罐向模具内充模的时间为30-40秒。
优选的,S2步骤中使用的与氢氧化钠溶液浓度为百分之五,且与BF按照 10:1的比例混合浸泡。
优选的,在S3步骤中向一个压力储罐加入主催化剂并且向另一个压力储罐加入助催化剂,主催化剂为TaCls或WoCl4,助催化剂为(C8H17)3A1或EzAlCl。
本发明的技术效果和优点:该PDCPD皮卡后箱盖总成的加工工艺,在生产中对DCPD单体进行提纯,保证其在模腔内可以充分反应生成PDCPD注塑成型保证皮卡后箱盖总成的强度,并且通过制备片状BF并且对表面进行处理,使得PDCPD可以牢固的包裹在BF外侧,进一步加强皮卡后箱盖总成的抗冲击、抗扭转等力学性能。
具体实施方式
本案中所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
本发明提供了一种PDCPD皮卡后箱盖总成的加工工艺,包括以下步骤,
S1、在料温机内部的两个压力储罐内分别投入一定量的DCPD单体,加热两个压力储罐内的DCPD单体到140-170摄氏度,并且通过搅拌杆对DCPD单体进行不断的搅拌挤压;对DCPD单体进行升温加热并且配合搅拌杆对熔融的DCPD 单体进行挤压拉伸,去除DCPD单体的杂质,提升DCPD单体材料的纯度。
S2、取一定量的风干后的BF(竹纤维)粉末,与氢氧化钠溶液混合浸泡,再用纯水喷淋,降低PH到7-8,最后在表面喷涂上硅烷偶联剂溶液,继续烘干 12小时;硅烷偶联剂溶液是由KH500(硅烷偶联剂)与乙醇以1:10的比例混合制成,对BF(竹纤维)粉末进行处理,制得片状的高强度BF备用。
S3、10-15分钟后,分别向两个压力储罐内加入添加剂和S2中制得的BF,同时投入抗氧化剂;通过抗氧化剂避免S2制得的片状的高强度BF表面受到DCPD 单体作用形成氧化层,影响PDCPD附着。
S4、料温机通过定量泵将两个压力储罐内的混合溶液依次定量输送到后箱盖模具和尾门模具的模腔内,同时混合头在模腔内不断的冲撞挤压;通过混合头的冲击加快DCPD单体发生开环异位聚合反应形成PDCPD。
S5、通过模温机对模具进行控温,模腔内的熔融材料逐渐成型,从而进行脱模操作;
S6、对成型的箱盖和尾门边缘进行打磨抛光等处理,最后通过箱盖后端的预埋孔将尾门转动装配到一起形成后箱盖总成。
在步骤S4中向模具进行注塑过程中料温机保证压力储罐内的混合物保持21-24摄氏度的恒温状态,且模温机控制模具的凹模温度在75-85摄氏度,凸模在55-60 摄氏度,保证压力储罐内的混合物保持足够的流动性,并且在模具内部DCPD聚合反应大量放热,通过模温机对模具的稳定进行恒控制,避免物料中的中低沸点的物料汽化,气泡增加,从而保证产品的质量。
在步骤S4中进行压力储罐向模具内充模的时间为30-40秒,保证在DCPD 的混合液凝胶之前对模具的模腔进行填充。
S2步骤中使用的与氢氧化钠溶液浓度为百分之五,且与BF按照10:1的比例混合浸泡,去除BF表面的植物蛋白和糖类,使得木质素和戊聚糖暴露在表面,使得PDCPD可以牢固的包裹到BF的表面,进一步加强产品的力学性能。
在S3步骤中向一个压力储罐加入主催化剂并且向另一个压力储罐加入助催化剂,主催化剂为TaCls或WoCl4,助催化剂为(C8H17)3A1或EzAlCl,通过主催化剂和助催化剂的配合,进一步加快了DCPD单体开环聚合产生PDCPD的效率。
最后应说明的是:以上所述仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (5)
1.一种PDCPD皮卡后箱盖总成的加工工艺,其特征在于:包括以下步骤,
S1、在料温机内部的两个压力储罐内分别投入一定量的DCPD单体,加热两个压力储罐内的DCPD单体到140-170摄氏度,并且通过搅拌杆对DCPD单体进行不断的搅拌挤压;
S2、取一定量的风干后的BF(竹纤维)粉末,与氢氧化钠溶液混合浸泡,再用纯水喷淋,降低PH到7-8,最后在表面喷涂上硅烷偶联剂溶液,继续烘干12小时;
S3、10-15分钟后,分别向两个压力储罐内加入添加剂和S2中制得的BF,同时投入抗氧化剂;
S4、料温机通过定量泵将两个压力储罐内的混合溶液依次定量输送到后箱盖模具和尾门模具的模腔内,同时混合头在模腔内不断的冲撞挤压;
S5、通过模温机对模具进行控温,模腔内的熔融材料逐渐成型,从而进行脱模操作;
S6、对成型的箱盖和尾门边缘进行打磨抛光等处理,最后通过箱盖后端的预埋孔将尾门转动装配到一起形成后箱盖总成。
2.根据权利要求1所述的一种PDCPD皮卡后箱盖总成的加工工艺,其特征在于:在步骤S4中向模具进行注塑过程中料温机保证压力储罐内的混合物保持21-24摄氏度的恒温状态,且模温机控制模具的凹模温度在75-85摄氏度,凸模在55-60摄氏度。
3.根据权利要求2所述的一种PDCPD皮卡后箱盖总成的加工工艺,其特征在于:在步骤S4中进行压力储罐向模具内充模的时间为30-40秒。
4.根据权利要求1所述的一种PDCPD皮卡后箱盖总成的加工工艺,其特征在于:S2步骤中使用的与氢氧化钠溶液浓度为百分之五,且与BF按照10:1的比例混合浸泡。
5.根据权利要求1所述的一种PDCPD皮卡后箱盖总成的加工工艺,其特征在于:在S3步骤中向一个压力储罐加入主催化剂并且向另一个压力储罐加入助催化剂,主催化剂为TaCls或WoCl4,助催化剂为(C8H17)3A1或EzAlCl。
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