CN108556380A - 防飞溅挡泥板及其制备方法 - Google Patents
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Abstract
本发明公开了一种防飞溅挡泥板的制备方法,通过在PE+EVA材质底板上喷涂粘结层EVA热熔胶,再将PVC+PE+EVA材质的网格层丝状材料喷覆于仍呈液态的粘结层上,并经硫化工艺,形成便于安装与使用的复合式一体化挡泥板结构。该制备方法既避免了三层结构因受环境影响而出现的各层应力不同造成分离问题,又提高了网格层与底板的粘合牢固性与应变一致性,从而获得在抗变形性、抗冲击性,及强度、刚度等使用性能方面均得到显著提高,且结构稳定、不易分离、使用寿命长的复合式一体化防飞溅挡泥板。
Description
技术领域
本发明涉及挡泥板技术领域,尤其一种防飞溅挡泥板的制备方法,以及由该制备方法获得的防飞溅挡泥板。
背景技术
挡泥板是安装在车轮外框架后面的板式结构,用于车辆在行驶过程,防止飞起的石子及沙砾打伤车身的漆面;及在雨雪天气时,防止轮胎上吸附的水、泥水、雾气飞溅到道路两侧的行人、车辆等物体上;不仅提高了汽车行驶的安全性,保护车身面避免损伤,而且能够减少行人与驾驶人员之间的矛盾和冲突。目前市面上的挡泥板有金属挡板、牛皮挡板、塑料挡板、橡胶挡板等,不同材质的挡泥板在抗冲击性、耐老化性、韧性等性能要求及成本方面都存在优势与弊端,不足以完全满足使用要求。
现有技术开发了一种带有吸能防飞溅装置的挡泥板,通过采用吸能结构与常规挡泥板组装以减小砂石和雨水飞溅的冲击力,但由于板材和吸能结构在性能及受力情况方面的差异,致使组装结构易分离,无法发挥两者的优势,而且板材存在易产生翘曲变形,刚度和撕裂强度较差的问题,吸能结构虽具有良好的尺寸稳定性和刚度,但存在易被击穿等问题。
发明内容
为解决现有技术存在的不足,本发明提供了一种防飞溅挡泥板的制备方法,通过该制备方法可获得由底板及网格层结构构成的复合式一体化挡泥板,不仅使挡泥板在抗变形性、抗冲击性,及强度、刚度等使用性能方面均得到显著提高,满足了使用需求,而且得到的复合式挡泥板结构稳定、不易分离。
为实现上述目的,本发明提供了防飞溅挡泥板的制备方法,所述防飞溅挡泥板为主要由底板、底板表面的粘结层、以及粘附固定在粘结层表面的网格层构成的一体化挡泥板;所述防飞溅挡泥板的制备方法包括以下步骤:
a、获取由主要原料聚乙烯与乙烯-醋酸乙烯共聚物经挤出反应制备得到的板材,作为防飞溅挡泥板的底板;
b、获取由主要原料聚氯乙烯、聚乙烯与乙烯-醋酸乙烯共聚物经挤出反应制得的丝状材料,作为防飞溅挡泥板的网格层材料;
c、在底板的表面喷涂一层乙烯-醋酸乙烯共聚物热熔胶,作为粘结层,在粘结层尚未固化、仍为液态时,将网格层材料喷覆在粘结层,经硫化形成具有吸附飞溅物功能的网格层,得到一体化防飞溅挡泥板。
本发明的制备方法,采用EVA热熔胶作为PE+EVA材质底板与PVC+PE+EVA材质网格层结构的粘结层,通过三层结构在材质的特定配合,以及将网格层材质的丝状材料喷覆于粘结层上并经硫化的工艺,使网格层粘附固定在底板上,形成便于安装与使用的复合式一体化挡泥板结构。由于底板与粘结层、网格层的材质相近性,避免了三层结构因受环境影响而出现的各层应力差异大而造成随变性差、易分离的问题;由于网格层以丝状体形式与粘结层接触,有效增大了接触比表面积,并经过喷覆后的硫化,使网格层与底板的粘合牢固性与应变一致性得到提高;从而使获得的复合式一体化防飞溅挡泥板在抗变形性、抗冲击性,及强度、刚度等使用性能方面均得到显著提高,而且该挡泥板结构稳定、不易分离、使用寿命长,能够在成本及应用上均满足需求。
作为对上述技术方案的限定,所述底板板材包括以下重量份原料组分:聚乙烯48~52份、乙烯-醋酸乙烯共聚物48~52份、色母0.8~1.5份。
作为对上述技术方案的限定,所述底板板材的制备包括以下步骤:
将各原料组分加入到螺杆挤出机,在螺杆挤出机的压缩比1:3、长径比25:1条件下,进行三阶加热挤出反应,得到底板板材;所述三阶加热的第一加热区的温度为120~160℃,第二加热区的温度为140~170℃,第三加热区的温度为130~170℃。
作为对上述技术方案的限定,所述网格层材料包括以下重量份原料组分:聚氯乙烯55~62份、聚乙烯16~25份、乙烯-醋酸乙烯共聚物16~25份、色母0.8~1.5份。
作为对上述技术方案的限定,所述网格层材料的制备包括以下步骤:
将各原料组分加入到螺杆挤出机,在螺杆挤出机的压缩比1:2.5、长径比20:1条件下,进行三阶加热挤出反应,得到丝状材料;所述三阶加热的第一加热区的温度为120~160℃,第二加热区的温度为140~170℃,第三加热区的温度为130~170℃。
作为对上述技术方案的限定,所述底板厚度为1.7~4.5mm,所述网格层的厚度为3~25mm。
进一步限定底板板材的原料配比及挤出制备工艺,网格层材料的原料配比及挤出制备工艺,以及底板与网格层的配合厚度,使复合层结构间形成更好的一体化结合,更进一步提高挡泥板的使用性能。
同时,本发明还提供了一种防飞溅挡泥板,由如上所述的制备方法制得。
综上所述,采用本发明的技术方案,获得的防飞溅挡泥板的制备方法,通过在PE+EVA材质底板上喷涂粘结层EVA热熔胶,再将PVC+PE+EVA材质的网格层丝状材料喷覆于仍呈液态的粘结层上,并经硫化工艺,形成便于安装与使用的复合式一体化挡泥板结构。该制备方法既避免了三层结构因受环境影响而出现的各层应力不同造成分离问题,又提高了网格层与底板的粘合牢固性与应变一致性,从而获得在抗变形性、抗冲击性,及强度、刚度等使用性能方面均得到显著提高,且结构稳定、不易分离、使用寿命长的复合式一体化防飞溅挡泥板。
具体实施方式
下面将结合实施例,对本发明的技术方案进行清楚、完整地描述,显然,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。
实施例一
本实施例涉及一种防飞溅挡泥板的制备。
实施例1.1
防飞溅挡泥板为主要由底板、底板表面的粘结层、以及粘附固定在粘结层表面的网格层构成的一体化挡泥板;
所述防飞溅挡泥板的制备方法包括以下步骤:
a、制备底板:
按重量份数计,取聚乙烯50份、乙烯-醋酸乙烯共聚物50份、色母1份;将各原料组分加入到单螺杆挤出机,在螺杆挤出机的压缩比1:3、长径比25:1条件下,进行第一加热区温度为120~160℃,第二加热区温度为140~170℃,第三加热区温度为130~170℃的三阶加热挤出反应,得到板材,作为防飞溅挡泥板的底板;
b、制备网格层材料:
按重量份数计,取聚氯乙烯60份、聚乙烯20份、乙烯-醋酸乙烯共聚物20份、色母1份;将各原料组分加入到单螺杆挤出机,在螺杆挤出机的压缩比1:2.5、长径比20:1条件下,进行第一加热区温度为120~160℃,第二加热区温度为140~170℃,第三加热区温度为130~170℃的三阶加热挤出反应,得到丝状材料,作为防飞溅挡泥板的网格层材料;
c、在厚度为2mm的底板表面喷涂一层EVA热熔胶,作为粘结层,在粘结层尚未固化、仍为液态时,将网格层材料即经步骤b得到的丝状材料喷覆在粘结层,经硫化形成厚度为8mm的、具有吸附飞溅物功能的网格层,得到一体化防飞溅挡泥板。
实施例1.2
防飞溅挡泥板为主要由底板、底板表面的粘结层、以及粘附固定在粘结层表面的网格层构成的一体化挡泥板;
所述防飞溅挡泥板的制备方法包括以下步骤:
a、制备底板:
按重量份数计,取聚乙烯49份、乙烯-醋酸乙烯共聚物51份、色母1.2份;将各原料组分加入到单螺杆挤出机,在螺杆挤出机的压缩比1:3、长径比25:1条件下,进行第一加热区温度为120~160℃,第二加热区温度为140~170℃,第三加热区温度为130~170℃的三阶加热挤出反应,得到板材,作为防飞溅挡泥板的底板;
b、制备网格层材料:
按重量份数计,取聚氯乙烯56份、聚乙烯22份、乙烯-醋酸乙烯共聚物22份、色母1份;将各原料组分加入到单螺杆挤出机,在螺杆挤出机的压缩比1:2.5、长径比20:1条件下,进行第一加热区温度为120~160℃,第二加热区温度为140~170℃,第三加热区温度为130~170℃的三阶加热挤出反应,得到丝状材料,作为防飞溅挡泥板的网格层材料;
c、在厚度为4mm的底板表面喷涂一层EVA热熔胶,作为粘结层,在粘结层尚未固化、仍为液态时,将网格层材料即经步骤b得到的丝状材料喷覆在粘结层,经硫化形成厚度为20mm的、具有吸附飞溅物功能的网格层,得到一体化防飞溅挡泥板。
获得的防飞溅挡泥板,根据使用车辆情况进行尺寸裁剪,然后安装即可。该挡泥板的安装简单、便捷;且一体化结构的成型效果良好,不易分离,使用寿命长;并在抗变形性、抗冲击性,及强度、刚度等使用性能方面均得到显著提高。
综上所述,本发明的防飞溅挡泥板的制备方法,通过在PE+EVA材质底板上喷涂粘结层EVA热熔胶,再将PVC+PE+EVA材质的网格层丝状材料喷覆于仍呈液态的粘结层上,并经硫化工艺,形成便于安装与使用的复合式一体化挡泥板结构。该制备方法既避免了三层结构因受环境影响而出现的各层应力不同造成分离问题,又提高了网格层与底板的粘合牢固性与应变一致性,从而获得在使用性能方面得到显著提高,且结构稳定、不易分离、使用寿命长的复合式一体化防飞溅挡泥板。
Claims (7)
1.一种防飞溅挡泥板的制备方法,其特征在于:所述防飞溅挡泥板为主要由底板、底板表面的粘结层、以及粘附固定在粘结层表面的网格层构成的一体化挡泥板;所述防飞溅挡泥板的制备方法包括以下步骤:
a、获取由主要原料聚乙烯与乙烯-醋酸乙烯共聚物经挤出反应制备得到的板材,作为防飞溅挡泥板的底板;
b、获取由主要原料聚氯乙烯、聚乙烯与乙烯-醋酸乙烯共聚物经挤出反应制得的丝状材料,作为防飞溅挡泥板的网格层材料;
c、在底板的表面喷涂一层乙烯-醋酸乙烯共聚物热熔胶,作为粘结层,在粘结层尚未固化、仍为液态时,将网格层材料喷覆在粘结层,经硫化形成具有吸附飞溅物功能的网格层,得到一体化防飞溅挡泥板。
2.根据权利要求1所述的防飞溅挡泥板的制备方法,其特征在于,所述底板板材包括以下重量份原料组分:聚乙烯48~52份、乙烯-醋酸乙烯共聚物48~52份、色母0.8~1.5份。
3.根据权利要求2所述的防飞溅挡泥板的制备方法,其特征在于,所述底板板材的制备包括以下步骤:
将各原料组分加入到螺杆挤出机,在螺杆挤出机的压缩比1:3、长径比25:1条件下,进行三阶加热挤出反应,得到底板板材;所述三阶加热的第一加热区的温度为120~160℃,第二加热区的温度为140~170℃,第三加热区的温度为130~170℃。
4.根据权利要求1所述的防飞溅挡泥板的制备方法,其特征在于,所述网格层材料包括以下重量份原料组分:聚氯乙烯55~62份、聚乙烯16~25份、乙烯-醋酸乙烯共聚物16~25份、色母0.8~1.5份。
5.根据权利要求4所述的防飞溅挡泥板的制备方法,其特征在于:所述网格层材料的制备包括以下步骤:
将各原料组分加入到螺杆挤出机,在螺杆挤出机的压缩比1:2.5、长径比20:1条件下,进行三阶加热挤出反应,得到丝状材料;所述三阶加热的第一加热区的温度为120~160℃,第二加热区的温度为140~170℃,第三加热区的温度为130~170℃。
6.根据权利要求1所述的防飞溅挡泥板的制备方法,其特征在于:所述底板厚度为1.7~4.5mm,所述网格层的厚度为3~25mm。
7.一种防飞溅挡泥板,其特征在于:由权利要求1~6中任一项所述的防飞溅挡泥板的制备方法制得。
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