CN107880409A - 一种缓冲减震塑胶颗粒及制备方法 - Google Patents
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Abstract
本发明公开了一种缓冲减震塑胶颗粒及制备方法,其配方如下:橡塑弹性体100份,稳定剂0‑4份,填料40‑300份,增塑剂0‑60份,防老剂1‑3份,活性剂0‑2份,发泡剂0‑8份,染色剂2‑6份。根据上述配方提供了制备方法:将橡塑弹性体投入密炼机中进行混炼,再依次加入填料、增塑剂、防老剂、活性剂、发泡剂,染色剂等,混炼均匀后用开炼机下片得到母胶。将母胶置于挤出机中,经过水下切粒***造粒,然后将粒子进行辐射交联后,在高温烘道内或者超临界发泡罐内进行发泡,得到产品。本发明提供的塑胶颗粒力学性能较好,缓冲减震效果优异,耐老化,且无毒环保,可广泛用于幼儿园等室内场所。
Description
技术领域
本发明涉及塑胶地面技术领域,属于高分子材料领域,主要涉及一种圆形的高弹缓冲减震塑胶跑道颗粒的制备方法。这种缓冲减震塑胶颗粒可以铺设出不同类型的塑胶地坪,主要应用于幼儿园塑胶地面、游泳池底部缓冲层和室内游乐场所的缓冲地面等。
背景技术
塑胶颗粒可以用于铺设田径场跑道、半圆区、辅助区、全民健身路径、室内体育馆训练跑道、幼儿园塑胶场地、室内游乐场道路铺面和等。由于其缓冲减震作用,人们在行走、跑步、娱乐时不易受伤,使活动场地更加舒适。目前的塑胶地面主要有聚氨酯类、天然橡胶类、三元乙丙橡胶类等。但是这些材料在给人们带来舒适的休闲、娱乐、比赛场所的同时,其环保性与耐老化性也倍受关注。本发明所提供的一种缓冲减震颗粒用到的材料皆为环保型材料,且交联方法为辐照交联,发泡方法为超临界发泡和加入微量发泡剂的化学发泡,解决了现有塑胶颗粒环保性差、耐老化性差、成本高的问题,满足市场的广泛需求。
发明内容
本发明以改进现有塑胶地坪颗粒的不足为主要目的,在此基础上开发一种圆形缓冲减震的塑胶地坪颗粒及制备方法。本发明使用氯化聚乙烯(CM)、乙烯-醋酸乙烯酯(EVA)、三元乙丙橡胶(EPDM)、乙烯-辛烯共聚物(POE)、聚烯烃嵌段式共聚物(OBC)等为原料,其一种或将几种原料共混得到新型的热塑性弹性体,配合添加合适的填料、环保增塑剂、发泡剂等,经过超临界发泡或微发泡工艺得到质轻、环保、高弹、缓冲减震的圆形塑胶地坪颗粒,可广泛应用于幼儿园塑胶地面、游泳池底部缓冲层和室内游乐场所地面等。
为了实现上述目的,本发明开发了一种缓冲减震塑胶颗粒及制备方法。
其配方如下:橡塑弹性体100份,稳定剂0~4份,填料0~200份,增塑剂0~60份,防老剂1~3份,活性剂0~2份,发泡剂0~8份,,染色剂0.2~4份。其中,稳定剂为钙锌复合稳定剂,填料为碳酸钙、高岭土、滑石粉中的一种或多种;增塑剂为环保增塑剂柠檬酸酯类增塑剂,防老剂为紫外线吸收剂UV-9、防老剂264中的一种或多种,活性剂为氧化锌、硬脂酸、硬脂酸锌中的一种或多种,发泡剂为偶氮二甲酰胺、4,4-氧化双苯酰肼或碳酸氢钠中的任一种,染色剂为永固红、永固黄、酞菁蓝、铁绿中的一种或多种。
其中,所述弹性体为氯化聚乙烯、乙烯-醋酸乙烯酯、三元乙丙橡胶、乙烯-辛烯共聚物(POE)、聚烯烃嵌段式共聚物(OBC)单独一种或几种材料共混得到,其中氯化聚乙烯橡胶50~100份,其他材料0~50份。
其中,缓冲减震颗粒的制备方法如下:
(1)混炼胶的制备:密炼机的温度设定为60~100℃,将称取好的弹性体投入到密炼机中,依次加入填料、增塑剂、防老剂、活性剂、发泡剂、染色剂等,混炼7~12min,出料、下片,得到混炼胶;
(2)挤出造粒:将步骤(1)中的混炼胶投入挤出-水下切粒***,挤出后之经过水下切粒-脱水干燥-振动过滤后,得到圆形颗粒;
(3)交联:将圆形颗粒进行辐照交联;
(4)发泡:加入化学发泡剂的颗粒,可以通过烘道进行化学发泡;没有加入化学发泡剂的颗粒可以在超临界发泡罐内进行物理发泡;
(5)塑胶颗粒经检验、包装,得到成品。
其中,步骤(4)中化学发泡的过程为:将烘道温度设置为150~180℃,颗粒进入烘道,发泡3~6min,之后室温冷却,得到发泡颗粒;物理发泡的过程为:将颗粒放入超临界反应釜中,控制釜内温度为室温~100℃,向釜中通入气体,使釜内的压力达到5~40MPa,,保温保压1~10h,之后泄压,打开反应釜,得到发泡颗粒;其中,物理发泡过程中,釜内通入的气体可以为氮气、二氧化碳或者两者的混合气体。
其中,所述步骤(3)中的辐照交联为电子加速器辐照或钴60辐照,辐照剂量为5kGy~100kGy。
其中,此微发泡颗粒可以用于幼儿园跑道的铺设、室内游乐场等对环保和舒适性要求较高的场所地面的铺设以及游泳池底部的缓冲减震。
与现有技术相比,本发明具有以下有益效果:
1.使用本发明所用的技术方法得到的微发泡缓冲减震塑胶颗粒,具有优异的耐油性、耐热性、抗臭氧性、耐候性、着色性和防钩性;
2.使用本发明中所用的配方与生产工艺,制备得到的圆形缓冲减震塑胶颗粒具有无毒、环保、无污染的优点;
3.本发明所生产出的缓冲减震塑胶颗粒与现有产品相比,具有质量轻、弹性好、环保、低成本、舒适度高等优点。
具体实施方式
实施例1
一种幼儿园塑胶场地用塑胶颗粒,其配方如下:弹性体100份,稳定剂3份,填料60份,增塑剂5份,防老剂1.5份,活性剂0.8份,发泡剂3.5份,染料3份。
其中,所述弹性体为CM/EPDM/POE共混材料,配比为80/10/10,稳定剂为钙锌复合稳定剂,填料为高岭土,增塑剂为柠檬酸酯类增塑剂,防老剂为紫外线吸收剂UV-9,防老剂264,配比为0.5/1,活性剂为氧化锌,发泡剂为偶氮二甲酰胺,染料为铁绿。
密炼机温度设定为100℃,将CM/EPDM/POE弹性体投入密炼机中,依次加入稳定剂、填料、增塑剂、防老剂、活性剂,发泡剂、染料,混炼均匀,出料、下片,得到混炼胶。将混炼胶置于挤出机料斗中,经过挤出、水下切粒、脱水干燥-振动过滤后,得到圆形颗粒。然后将圆形颗粒置于电子加速器辐照器内进行辐照交联,辐照剂量为65kGy,后置于175℃烘道内,颗粒进行自由发泡,发泡时间为6min,最终得到发泡圆形缓冲减震塑胶颗粒。颗粒密度为0.763g/cm3。
实施例2
游泳池底部缓冲层用塑胶颗粒,其配方如下:弹性体100份,稳定剂3份,填料150份,增塑剂25份,防老剂1份,染料0.5-2份(根据染料份数得到从深到浅的不同蓝色胶料)。
其中,所述弹性体为CM/EVA,配比为80/20;所述稳定剂为钙锌复合稳定剂,填料为碳酸钙/高岭土用量为100/50;增塑剂为柠檬酸酯类增塑剂;防老剂为防老剂264;染料为酞菁蓝。
密炼机温度设定为90℃,将CM/EVA弹性体投入密炼机中,依次加入填料、增塑剂、防老剂等,混炼8min,出料、下片,得到混炼胶。将混炼胶置入挤出机中,经过挤出、水下切粒、脱水干燥-振动过滤后,得到圆形颗粒。然后将圆形颗粒置于电子加速器辐照器内进行辐照交联,辐照剂量为70kGy,之后将交联后的粒子置于超临界反应釜内,控制釜温为70℃,向反应釜内通入N2至压力达18MPa,保温保压1.5h,之后泄压,得到微发泡颗粒。颗粒密度为1.132g/cm3。
实施例3
室内游乐场缓冲地面用塑胶颗粒,其配方如下:弹性体100份,稳定剂2份,填料80份,增塑剂20份,防老剂1份,染料0.5-2.5份。
其中,所述弹性体为CM/EVA/OBC,配比为75/15/10;所述稳定剂为钙锌复合稳定剂,填料为碳酸钙与高岭土并用;增塑剂为柠檬酸酯类增塑剂;防老剂为246,染料为永固红、永固黄、酞菁蓝、铁绿中的一种或多种,通过颜料制备得到不同颜色,不同深浅度的彩色颗粒。
将密炼机的温度设定为90℃,待温度上升至设定温度并稳定后,把称取好的CM/EVA/OBC投入到密炼机中,待密炼机的扭矩平衡后,依次加入稳定剂、填料、增塑剂、防老剂、染色剂等,混炼均匀后排胶,下片,制得母胶。将经密炼机混合均匀的胶料在开炼机上下片,得到混炼胶片。挤出机的温度设定为105℃,把胶片投入挤出机料斗中,经过挤出、水下切粒、脱水干燥-振动过滤后,得到圆形颗粒。然后将圆形颗粒置于电子加速器辐照器进行辐照交联,辐照剂量为50kGy,之后将交联的塑胶颗粒放进超临界反应釜中,温度为60℃,通入N2,压力为16MPa,保压3h。之后泄压,得到微发泡颗粒。颗粒密度为0.856g/cm3。
上述实施例1至实施例3的塑胶颗粒的铺设工艺如下:
首先在水泥地面上喷涂一层底胶,以便面胶可以很好地粘接在跑道上。然后在底胶尚未完全固化,把微发泡后的塑胶颗粒与胶水混合均匀,使用一定的喷涂方法,将其喷涂在底胶上。最后静待其固化,然后得到缓冲减震场地。
最后应说明的是:以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管前述实施例对本发明进行了详细的说明,本领域的普通技术人员依然可以对前述各实施例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;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。
Claims (6)
1.一种缓冲减震塑胶颗粒及制备方法,其配方如下:橡塑弹性体100份,稳定剂0~4份,填料0~200份,增塑剂0~40份,防老剂1~3份,活性剂0~2份,发泡剂0~8份,染色剂0.2~4份。其中,稳定剂为钙锌复合稳定剂,填料为碳酸钙、高岭土、滑石粉中的一种或多种;增塑剂为环保增塑剂柠檬酸酯类增塑剂,防老剂为紫外线吸收剂UV-9、防老剂264中的一种或多种,活性剂为氧化锌、硬脂酸、硬脂酸锌中的一种或多种,发泡剂为偶氮二甲酰胺、4,4-氧化双苯酰肼或碳酸氢钠中的任一种,染色剂为永固红、永固黄、酞菁蓝、铁绿中的一种或多种。
2.根据权利要求书1所述的一种缓冲减震塑胶颗粒及制备方法,其特征在于,所述弹性体为氯化聚乙烯、乙烯-醋酸乙烯酯、乙丙橡胶、乙烯-辛烯共聚物(POE)、聚烯烃嵌段式共聚物(OBC)单独一种或几种材料共混得到,其中氯化聚乙烯橡胶50~100份,其他材料0~50份。
3.根据权利要求书1所述的一种缓冲减震塑胶颗粒及制备方法,其特征在于,制备方法如下:
(1)混炼胶的制备:密炼机的温度设定为60~100℃,将称取好的弹性体投入到密炼机中,依次加入填料、增塑剂、防老剂、活性剂、发泡剂、染色剂等,混炼7~12min,出料、下片,得到混炼胶;
(2)挤出造粒:将步骤(1)中的混炼胶投入挤出-水下切粒***,挤出后之经过水下切粒-脱水干燥-振动过滤后,得到圆形颗粒;
(3)交联:将圆形颗粒进行辐照交联;
(4)发泡:加入化学发泡剂的颗粒,可以通过烘道进行化学发泡;没有加入化学发泡剂的颗粒可以在超临界发泡罐内进行物理发泡;
(5)塑胶颗粒经检验、包装,得到成品。
4.根据权利要求书3所述的一种缓冲减震塑胶颗粒及制备方法,其特征在于,步骤 (4)中化学发泡的过程为:将烘道温度设置为150~180℃,颗粒进入烘道,发泡3~6min,之后室温冷却,得到发泡颗粒;物理发泡的过程为:将颗粒放入超临界反应釜中,控制釜内温度为室温~100℃,向釜中通入气体,使釜内的压力达到5~40MPa,保温保压1~10h,之后泄压,打开反应釜,得到发泡颗粒;其中,物理发泡过程中,釜内通入的气体可以为氮气、二氧化碳或者两者的混合气体。
5.根据权利要求书3所述的一种缓冲减震塑胶颗粒及制备方法,其特征在于,所述步骤(3)中的辐照交联为电子加速器辐照或钴60辐照,辐照剂量为5kGy~100kGy。
6.一种缓冲减震塑胶颗粒及制备方法,其特征在于,此微发泡颗粒可以用于幼儿园跑道的铺设、室内游乐场等对环保和舒适性要求较高的场所地面的铺设以及充当游泳池底部的缓冲减震层。
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CN109161071A (zh) * | 2018-09-01 | 2019-01-08 | 成都市水泷头化工科技有限公司 | 一种含废旧轮胎胶粉的低成本塑胶跑道及制备方法 |
CN109436572A (zh) * | 2019-01-04 | 2019-03-08 | 安阳佳友非晶科技有限公司 | 一种非晶磁芯减震缓冲装盒及制作方法 |
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CN109161071A (zh) * | 2018-09-01 | 2019-01-08 | 成都市水泷头化工科技有限公司 | 一种含废旧轮胎胶粉的低成本塑胶跑道及制备方法 |
CN109436572A (zh) * | 2019-01-04 | 2019-03-08 | 安阳佳友非晶科技有限公司 | 一种非晶磁芯减震缓冲装盒及制作方法 |
CN113831579A (zh) * | 2021-10-19 | 2021-12-24 | 广东丰能智慧科技有限公司 | 一种高弹环保塑胶跑道颗粒的制备方法 |
CN113831579B (zh) * | 2021-10-19 | 2022-09-06 | 广东丰能智慧科技有限公司 | 一种高弹环保塑胶跑道颗粒的制备方法 |
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