CN111849080A - 一种微发泡橡胶跑道及其制备方法 - Google Patents
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Abstract
本发明提供一种微发泡橡胶跑道,所述微发泡橡胶跑道包括微发泡橡胶颗粒和聚氨酯胶黏剂,所述聚氨酯胶黏剂将微发泡橡胶颗粒胶黏固化形成微发泡橡胶跑道,所述微发泡橡胶跑道层堆叠通过聚氨酯胶黏剂胶黏固化形成所述微发泡橡胶跑道层,按重量份数计,所述微发泡橡胶颗粒由如下原料制备而成:三元乙丙橡胶100份、补强剂20‑30份、硫化剂3‑7份、偶联剂3‑5份,发泡剂5‑10份、抗老化剂1‑5份,其中,发泡剂包括以下组分和配比:AC发泡剂4‑8份、2,5‑二叔戊基氢醌1‑2份。本发明提供一种弹性性能好、抗拉伸抗撕裂性能好、抗老化性能优异的微发泡橡胶跑道及其制备方法。
Description
技术领域
本发明涉及塑胶跑道填充颗粒物技术领域,特别涉及一种微发泡橡胶跑道及其制备方法。
背景技术
根据塑胶跑道的结构、用料可分为:全塑型塑胶跑道、混合型塑胶跑道、透气型塑胶跑道。因透气型塑胶跑道成本低、渗水性能好、弹性符合大、中、小学的日常教学和训练要求,其在塑胶跑道中的铺装比例占63%。透气型塑胶跑道由三元乙丙橡胶颗粒和聚氨酯胶黏剂混合铺设而成。
现在市面上了许多塑胶跑道用颗粒大多为三元乙丙橡胶制造的,但是目前的三元乙丙橡胶形成的跑道的弹性、拉伸撕裂性能不够,抗老化性能较差,橡胶颗粒在使用3-4年就需要更换,资源浪费大。
因此,需要研究一种弹性性能好、抗拉伸抗撕裂性能好、抗老化性能优异的微发泡橡胶跑道及其制备方法。
发明内容
本发明的目的在于提供一种弹性性能好、抗拉伸抗撕裂性能好、抗老化性能优异的微发泡橡胶跑道及其制备方法。
本发明的上述技术目的是通过以下技术方案得以实现的:
一种微发泡橡胶跑道,所述微发泡橡胶跑道包括微发泡橡胶颗粒和聚氨酯胶黏剂,所述聚氨酯胶黏剂将微发泡橡胶颗粒胶黏固化形成微发泡橡胶跑道,所述微发泡橡胶跑道层堆叠通过聚氨酯胶黏剂胶黏固化形成所述微发泡橡胶跑道层,按重量份数计,所述微发泡橡胶颗粒由如下原料制备而成:三元乙丙橡胶100份、补强剂20-30份、硫化剂3-7份、偶联剂3-5份,发泡剂5-10份、抗老化剂1-5份,其中,发泡剂包括以下组分和配比:AC发泡剂4-8份、2,5-二叔戊基氢醌1-2份。
作为本发明的进一步设置,按重量份数计,所述硫化剂包括一硫化秋兰姆1-2份、二硫代氨基甲酸酯1-2份和次磺酰胺1-3份。
作为本发明的进一步设置,按重量份数计,所述补强剂为白炭黑。
作为本发明的进一步设置,按重量份数计,所述偶联剂包括硅烷偶联剂1-4份。
作为本发明的进一步设置,按重量份数计,所述偶联剂还包括吡啶二羧酸1-2份。
作为本发明的进一步设置,按重量份数计,所述抗老化剂包括2,6-二叔丁基对甲苯酚1-3份。
作为本发明的进一步设置,按重量份数计,所述抗老化剂还包括苯基聚甲基硅氧烷醇1-2份。
本发明还提供一种微发泡橡胶跑道的制备方法,包括以下步骤:
步骤S1:物料混合:将三元乙丙橡胶100份、补强剂20-30份、硫化剂3-7份、偶联剂3-5份,发泡剂5-10份、抗老化剂1-5份混合均匀,投入密炼机中密炼,得到密炼生橡胶;
步骤S2:硫化交联:将密炼后的生橡胶再投入开炼机中过辊成片状生橡胶,然后将片状生橡胶放置在硫化机中升温硫化2-4h;
步骤S3:造粒:将硫化后的熟橡胶裁成哑铃状片状熟橡胶之后进行造粒,即得到微发泡EPDM橡胶颗粒;
步骤S4:制备微发泡橡胶跑道:将微发泡EPDM橡胶颗粒与聚氨酯胶黏剂混合均匀,在模具中压实凝固成卷材,待聚氨酯胶黏剂固化,形成所述微发泡橡胶跑道。
本发明的有益效果是:
1.本发明在硫化发泡工艺步骤中,采用秋兰姆类-二硫代氨基甲酸盐类-次磺酰胺的复合硫化促进剂体系,先采用秋兰姆类-二硫代氨基甲酸盐类促进剂使EPDM橡胶快速起硫,克服EPDM只在侧链上含少量不饱和双键起硫慢的缺点,有效提高硫化的起硫效率,再采用迟效型次磺酰胺类促进剂持续、长效、稳定地发挥温和硫化作用,在温和硫化过程中,发泡剂中的2,5-二叔戊基氢醌能与发泡剂AC相互作用,促进发泡剂AC发泡作用,使硫化后的熟胶中产生更多的发泡孔隙,有效提高EPDM橡胶的弹性。
2.本发明的偶联剂中添加了吡啶二羧酸,吡啶二羧酸的羧基能与白炭黑的羟基相互作用,提高白炭黑羟基的活性,进而提高硅烷偶联剂与白炭黑羟基缩合反应,同时,吡啶二羧酸与硅烷偶联剂在硫化时与EPDM橡胶发生交联反应,有效增强硅烷偶联剂作为中间桥梁对白炭黑与EPDM橡胶紧密连接作用,有效提高EPDM橡胶的弹性、拉伸强度和抗撕裂能力。
3.本发明在抗老化剂中添加了苯基聚甲基硅氧烷醇,苯基聚甲基硅氧烷醇能与2,6-二叔丁基对甲苯酚协同提高EPDM橡胶的抗老化性能,并且苯基聚甲基硅氧烷醇能在EPDM橡胶进行硫化加工时提高EPDM橡胶的流变和加工性能,提高EPDM橡胶的拉伸强度和抗撕裂等机械性能。
具体实施方式
下面将结合具体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的一部分实施例,而不是全部的实施例。基于本发明的实施例,本领域普通技术人员在没有作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。
一、实施例
实施例1
一种微发泡橡胶跑道的制备方法,包括以下步骤:
步骤S1:物料混合:将三元乙丙橡胶100份、白炭黑20份、硫化剂一硫化秋兰姆1份、二硫代氨基甲酸酯1份和次磺酰胺1份、偶联剂硅烷偶联剂1份、吡啶二羧酸1份,发泡剂5份、抗老化剂2,6-二叔丁基对甲苯酚1份、苯基聚甲基硅氧烷醇1份,其中,发泡剂包括以下组分和配比:AC发泡剂4份、2,5-二叔戊基氢醌1份,混合均匀,投入密炼机中密炼,得到密炼生橡胶;
步骤S2:硫化交联:将密炼后的生橡胶再投入开炼机中过辊成片状生橡胶,然后将片状生橡胶放置在硫化机中升温120℃硫化2h;
步骤S3:造粒:将硫化后的熟橡胶裁成哑铃状片状熟橡胶之后进行造粒,即得到微发泡EPDM橡胶颗粒;
步骤S4:制备微发泡橡胶跑道:将微发泡EPDM橡胶颗粒与聚氨酯胶黏剂混合均匀,在模具中压实凝固成卷材,待聚氨酯胶黏剂固化,形成所述微发泡橡胶跑道。
实施例2
一种微发泡橡胶跑道的制备方法,包括以下步骤:
步骤S1:物料混合:将三元乙丙橡胶100份、白炭黑30份、硫化剂一硫化秋兰姆2份、二硫代氨基甲酸酯2份和次磺酰胺3份、偶联剂硅烷偶联剂4份、吡啶二羧酸2份,发泡剂10份、抗老化剂2,6-二叔丁基对甲苯酚3份、苯基聚甲基硅氧烷醇2份,其中,发泡剂包括以下组分和配比:AC发泡剂8份、2,5-二叔戊基氢醌2份,混合均匀,投入密炼机中密炼,得到密炼生橡胶;
步骤S2:硫化交联:将密炼后的生橡胶再投入开炼机中过辊成片状生橡胶,然后将片状生橡胶放置在硫化机中升温150℃硫化4h;
步骤S3:造粒:将硫化后的熟橡胶裁成哑铃状片状熟橡胶之后进行造粒,即得到微发泡EPDM橡胶颗粒;
步骤S4:制备微发泡橡胶跑道:将微发泡EPDM橡胶颗粒与聚氨酯胶黏剂混合均匀,在模具中压实凝固成卷材,待聚氨酯胶黏剂固化,形成所述微发泡橡胶跑道。
实施例3
一种微发泡橡胶跑道的制备方法,包括以下步骤:
步骤S1:物料混合:将三元乙丙橡胶100份、白炭黑25份、硫化剂一硫化秋兰姆1.5份、二硫代氨基甲酸酯1.5份和次磺酰胺2份、偶联剂硅烷偶联剂2份、吡啶二羧酸1.5份,发泡剂8份、抗老化剂2,6-二叔丁基对甲苯酚2份、苯基聚甲基硅氧烷醇1.5份,其中,发泡剂包括以下组分和配比:AC发泡剂6份、2,5-二叔戊基氢醌1.5份,混合均匀,投入密炼机中密炼,得到密炼生橡胶;
步骤S2:硫化交联:将密炼后的生橡胶再投入开炼机中过辊成片状生橡胶,然后将片状生橡胶放置在硫化机中升温130℃硫化3h;
步骤S3:造粒:将硫化后的熟橡胶裁成哑铃状片状熟橡胶之后进行造粒,即得到微发泡EPDM橡胶颗粒;
步骤S4:制备微发泡橡胶跑道:将微发泡EPDM橡胶颗粒与聚氨酯胶黏剂混合均匀,在模具中压实凝固成卷材,待聚氨酯胶黏剂固化,形成所述微发泡橡胶跑道。
实施例4
一种微发泡橡胶跑道的制备方法,包括以下步骤:
步骤S1:物料混合:将三元乙丙橡胶100份、白炭黑25份、硫化剂一硫化秋兰姆1.5份、二硫代氨基甲酸酯1.5份和次磺酰胺2份、偶联剂硅烷偶联剂2份、吡啶二羧酸1.5份,发泡剂8份、抗老化剂2,6-二叔丁基对甲苯酚2份、苯基聚甲基硅氧烷醇1.5份,其中,发泡剂包括以下组分和配比:AC发泡剂6份,混合均匀,投入密炼机中密炼,得到密炼生橡胶;
步骤S2:硫化交联:将密炼后的生橡胶再投入开炼机中过辊成片状生橡胶,然后将片状生橡胶放置在硫化机中升温130℃硫化3h;
步骤S3:造粒:将硫化后的熟橡胶裁成哑铃状片状熟橡胶之后进行造粒,即得到微发泡EPDM橡胶颗粒;
步骤S4:制备微发泡橡胶跑道:将微发泡EPDM橡胶颗粒与聚氨酯胶黏剂混合均匀,在模具中压实凝固成卷材,待聚氨酯胶黏剂固化,形成所述微发泡橡胶跑道。
实施例5
一种微发泡橡胶跑道的制备方法,包括以下步骤:
步骤S1:物料混合:将三元乙丙橡胶100份、白炭黑25份、硫化剂一硫化秋兰姆1.5份、二硫代氨基甲酸酯1.5份和次磺酰胺2份、偶联剂硅烷偶联剂2份,发泡剂8份、抗老化剂2,6-二叔丁基对甲苯酚2份、苯基聚甲基硅氧烷醇1.5份,其中,发泡剂包括以下组分和配比:AC发泡剂6份、2,5-二叔戊基氢醌1.5份,混合均匀,投入密炼机中密炼,得到密炼生橡胶;
步骤S2:硫化交联:将密炼后的生橡胶再投入开炼机中过辊成片状生橡胶,然后将片状生橡胶放置在硫化机中升温130℃硫化3h;
步骤S3:造粒:将硫化后的熟橡胶裁成哑铃状片状熟橡胶之后进行造粒,即得到微发泡EPDM橡胶颗粒;
步骤S4:制备微发泡橡胶跑道:将微发泡EPDM橡胶颗粒与聚氨酯胶黏剂混合均匀,在模具中压实凝固成卷材,待聚氨酯胶黏剂固化,形成所述微发泡橡胶跑道。
实施例6
一种微发泡橡胶跑道的制备方法,包括以下步骤:
步骤S1:物料混合:将三元乙丙橡胶100份、白炭黑25份、硫化剂一硫化秋兰姆1.5份、二硫代氨基甲酸酯1.5份和次磺酰胺2份、偶联剂硅烷偶联剂2份、吡啶二羧酸1.5份,发泡剂8份、抗老化剂2,6-二叔丁基对甲苯酚2份,其中,发泡剂包括以下组分和配比:AC发泡剂6份、2,5-二叔戊基氢醌1.5份,混合均匀,投入密炼机中密炼,得到密炼生橡胶;
步骤S2:硫化交联:将密炼后的生橡胶再投入开炼机中过辊成片状生橡胶,然后将片状生橡胶放置在硫化机中升温130℃硫化3h;
步骤S3:造粒:将硫化后的熟橡胶裁成哑铃状片状熟橡胶之后进行造粒,即得到微发泡EPDM橡胶颗粒;
步骤S4:制备微发泡橡胶跑道:将微发泡EPDM橡胶颗粒与聚氨酯胶黏剂混合均匀,在模具中压实凝固成卷材,待聚氨酯胶黏剂固化,形成所述微发泡橡胶跑道。
实施例7
一种微发泡橡胶跑道的制备方法,包括以下步骤:
步骤S1:物料混合:将三元乙丙橡胶100份、白炭黑25份、硫化剂一硫化秋兰姆1.5份、二硫代氨基甲酸酯1.5份和次磺酰胺2份、偶联剂硅烷偶联剂2份,发泡剂8份、抗老化剂2,6-二叔丁基对甲苯酚2份,其中,发泡剂包括以下组分和配比:AC发泡剂6份,混合均匀,投入密炼机中密炼,得到密炼生橡胶;
步骤S2:硫化交联:将密炼后的生橡胶再投入开炼机中过辊成片状生橡胶,然后将片状生橡胶放置在硫化机中升温130℃硫化3h;
步骤S3:造粒:将硫化后的熟橡胶裁成哑铃状片状熟橡胶之后进行造粒,即得到微发泡EPDM橡胶颗粒;
步骤S4:制备微发泡橡胶跑道:将微发泡EPDM橡胶颗粒与聚氨酯胶黏剂混合均匀,在模具中压实凝固成卷材,待聚氨酯胶黏剂固化,形成所述微发泡橡胶跑道。
对实施例1-7制备成的哑铃状片状熟橡胶进行拉伸强度、断裂强度、韧性和弹性的测试,其中哑铃状片状熟橡胶为用气动式冲片机和裁刀将片状生橡胶裁剪成1型哑铃型样条,将哑铃型样条按照国家标准(GB/T528-2009)在常温下进行测试,采用电子万能试验机测试复合材料哑铃型样条的拉伸强度和断裂拉伸率,夹具的上升速率为200mm*min-1;冲击试验采用CEAST摆锤冲击仪,按照GB/T1843-1996标准先用Z20d锤能刀在哑铃状片状熟橡胶上打A型缺口,采用2J悬臂梁,以冲击速度为3.46m/s进行冲击试验,测试结果如下表1:
表1各实施例的性能测试
具体实施例 | 拉伸强度(Mpa) | 断裂伸长率(%) | 弹性模量(Mpa) | 冲击强度(kJ/m<sup>2</sup>) |
实施例1 | 12.4 | 812 | 22.7 | 156 |
实施例2 | 14.5 | 857 | 26.4 | 174 |
实施例3 | 13.4 | 836 | 24.1 | 165 |
实施例4 | 10.5 | 757 | 16.5 | 134 |
实施例5 | 9.2 | 721 | 16.1 | 131 |
实施例6 | 9.3 | 725 | 16.7 | 137 |
实施例7 | 7.2 | 637 | 14.4 | 114 |
本文中应用了具体实施例对本发明的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本发明的方法及其核心思想。应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以对本发明进行若干改进和修饰,这些改进和修饰也落入本发明权利要求的保护范围内。
Claims (8)
1.一种微发泡橡胶跑道,其特征在于,所述微发泡橡胶跑道包括微发泡橡胶颗粒和聚氨酯胶黏剂,所述聚氨酯胶黏剂将微发泡橡胶颗粒胶黏固化形成微发泡橡胶跑道,所述微发泡橡胶跑道层堆叠通过聚氨酯胶黏剂胶黏固化形成所述微发泡橡胶跑道层,按重量份数计,所述微发泡橡胶颗粒由如下原料制备而成:三元乙丙橡胶100份、补强剂20-30份、硫化剂3-7份、偶联剂3-5份,发泡剂5-10份、抗老化剂1-5份,其中,发泡剂包括以下组分和配比:AC发泡剂4-8份、2,5-二叔戊基氢醌1-2份。
2.根据权利要求1所述的微发泡橡胶跑道,其特征在于,按重量份数计,所述硫化剂包括一硫化秋兰姆1-2份、二硫代氨基甲酸酯1-2份和次磺酰胺1-3份。
3.根据权利要求1所述的微发泡橡胶跑道,其特征在于,按重量份数计,所述补强剂为白炭黑。
4.根据权利要求1所述的微发泡橡胶跑道,其特征在于,按重量份数计,所述偶联剂包括硅烷偶联剂1-4份。
5.根据权利要求4所述的微发泡橡胶跑道,其特征在于,按重量份数计,所述偶联剂还包括吡啶二羧酸1-2份。
6.根据权利要求1所述的微发泡橡胶跑道,其特征在于,按重量份数计,所述抗老化剂包括2,6-二叔丁基对甲苯酚1-3份。
7.根据权利要求6所述的微发泡橡胶跑道,其特征在于,按重量份数计,所述抗老化剂还包括苯基聚甲基硅氧烷醇1-2份。
8.一种根据权利要求1-7任一项所述的微发泡橡胶跑道的制备方法,其特征在于,包括以下步骤:
步骤S1:物料混合:将三元乙丙橡胶100份、补强剂20-30份、硫化剂3-7份、偶联剂3-5份,发泡剂5-10份、抗老化剂1-5份混合均匀,投入密炼机中密炼,得到密炼生橡胶;
步骤S2:硫化交联:将密炼后的生橡胶再投入开炼机中过辊成片状生橡胶,然后将片状生橡胶放置在硫化机中升温硫化2-4h;
步骤S3:造粒:将硫化后的熟橡胶裁成哑铃状片状熟橡胶之后进行造粒,即得到微发泡EPDM橡胶颗粒;
步骤S4:制备微发泡橡胶跑道:将微发泡EPDM橡胶颗粒与聚氨酯胶黏剂混合均匀,在模具中压实凝固成卷材,待聚氨酯胶黏剂固化,形成所述微发泡橡胶跑道。
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