CN107984854A - 用于边坡或河渠的土工格栅及其制备方法 - Google Patents
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Abstract
本发明提供了一种用于边坡或河渠的土工格栅,包括:B和C的双层复合体叠加16‑3000层而成的叠加复合体,所述B为玻纤改性聚丙烯或碳纤维改性聚丙烯,所述C为低压聚乙烯;所述土工格栅按照A‑(BC)n‑A的排列方式复合,其中n为BC双层结构的层数;n=16‑3000,所述A包括无规聚丙烯。本发明的土工格栅具有可回收、无毒等特性,真正实现了绿色、环保的多用途特性;物理性能、耐高低温性能优异;具有固地(沙)、渗水保水、防拉断、承重的特点,使用年限50年以上。
Description
本申请是针对申请号为201510847579.X、申请日为2015年11月26日、发明名称为一种固土、渗水、承重新型环保土工材料及其制备方法”的分案申请。
技术领域
本发明涉及土工、道路及土工工程的一种新型环保材料。
背景技术
土工材料是土木工程应用的合成材料的总称。作为一种土木工程材料,它是以人工合成的聚合物(如塑料、化纤、合成橡胶等)为原料,制成各种类型的产品,置于土体内部、表面或各种土体之间,发挥加强或保护土体的作用。
在公路建设中的边坡治理,河渠护理等,通常采用水泥打桩、格子型固化,其工期长,投资大,还不能防水,在治沙工程中也存在类似问题,加上城市海绵化的产业政策导向,需要新型节能环保的土工材料。
发明内容
有鉴于此,本发明的目的在于提供一种土工格栅。
为实现上述目的,本发明的技术方案为:
一种用于边坡或河渠的土工格栅,包括:B和C的双层复合体叠加16-3000层而成的叠加复合体,所述B为玻纤改性聚丙烯或碳纤维改性聚丙烯,所述C为低压聚乙烯;所述土工格栅按照A-(BC)n-A的排列方式复合,其中n为BC双层结构的层数;n=16-3000,所述A包括无规聚丙烯。
本发明所述的叠加是B料和C料的物理成层粘合,不发生化学反应和物料的无序混合。本发明大大提高了材料的应用性能,如力学强度、阻隔性等等。
进一步,所述B与C的重量比为(80-90):(10-30)。
进一步,所述玻纤改性聚丙烯的玻纤为10-30%,碳纤维改性聚丙烯中的碳纤维10-30%。
进一步,无规聚丙烯中可以添加D-色母料。
进一步,其组成包括:A-无规聚丙烯5-20份、B 80-90份、C 10-30份、D-色母料2-10份,按重量份数计。
本发明的目的还在于保护所述土工格栅的制备方法,包括以下步骤:将B、C分别经混炼塑化挤出,经分配成B和C的双层复体,双层复体叠加16-3000层形成叠加复合体,将其与其它混炼塑化挤出物经分配挤出复合材料;所述挤出温度控制在160-280℃。
进一步,所述土工格栅的制备方法,包括以下步骤:
(1)在A中加入D拌匀投入第一挤出机经混炼塑化挤出,B投入第二挤出机料斗内经混炼塑化挤出,C投入第三挤出机料斗内经混炼塑化挤出;挤出加工温度控制在160-280℃;
(2)将步骤(1)所得B挤出料和C挤出料通过分配器分成B、C的双层复体,然后叠加挤出16-3000层的叠加复合体;叠加复合体、A挤出料,通过分配机经分配挤出,经过T型头模具形成A-(BC)n-A复合材料;经压制、定型、冷却、切割为要求的片材;
(3)根据需要将片材进行分割、冲切形成不同宽度和厚度的带孔条状片材,间隔交叉焊接得到网状结构的土工格栅。
本发明制得的土工格栅使用年限可达50年以上,片材厚度为0.5-2mm。
本发明的有益效果在于:
本发明的土工格栅具有可回收、无毒等特性,真正实现了绿色、环保的多用途特性。
本发明的土工格栅物理性能、耐高低温性能优异。
本发明的土工格栅具有固地(沙)、渗水保水、防拉断、承重的特点,使用年限50年以上。
具体实施方式
所举实施例是为了更好地对本发明的内容进行说明,但并不是本发明的内容仅限于所举实施例。所以熟悉本领域的技术人员根据上述发明内容对实施方案进行非本质的改进和调整,仍属于本发明的保护范围。
实施例1
一种土工格栅,按重量份数,其组成为:A-无规聚丙烯5-20份、B 80-90份、C 10-30份、D-色母料2-10份。B为玻纤改性聚丙烯或碳纤维改性聚丙烯,所述C为低压聚乙烯。玻纤改性聚丙烯其中玻纤为10-30%,碳纤维改性聚丙烯中的碳纤维10-30%。
所述土工格栅的制备方法如下:
(1)在A中加入D拌匀投入A挤出机经混炼塑化挤出,B投入B挤出机料斗内经混炼塑化挤出,C投入C挤出机料斗内经混炼塑化挤出;挤出加工温度控制在160-280℃;
(2)将步骤(1)所得B挤出料和C挤出料通过分配器分成B、C的双层复体,然后进入叠加机叠加挤出2400层的叠加复合体;叠加复合体、A挤出料,通过分配机经分配挤出,经过T型头模具形成A、BC、BC…A(A-(BC)n-A,n=2400层)的复合发泡材料;经压制、定型、冷却、切割等常规处理为所要求的片材;
(3)根据需要将片材进行分割、冲切等常规处理形成不同宽度和厚度的带孔条状
片材,间隔交叉焊接得到网状结构的土木格栅。其使用年限50年以上,静载5-7吨,片材厚度在0.5-2mm的新型土木材料。
本产品符合GB/T 17689-2008,其性能表1所示(产品尺寸1830*915*15mm)。
表1单拉格栅性能
2.本产品铺设于边坡或河渠,可种植植物,本产品有效的固土、渗水保水,植株生长发育良好。
3.产品长期分别或者交替置于90℃和-50℃的环境中,其性能不变,使用年限可达到50年。
4.耐温性测试:将产品放置于100℃,保持60min后,产品无气泡、裂痕和软化现象,继续加热到180℃,保持90min,尺寸膨胀率0.1%,再快速降温到零摄氏度(10s内迅速转移至0℃的环境),保持2h,采用2mm钉子钉在产品上,无开裂现象。再次进行物理性能测试,其性能相对于表1无明显变化。
此外,应当理解,虽然本说明书按照实施方式加以描述,但并非每个实施方式仅包含一个独立的技术方案,说明书的这种叙述方式仅仅是为清楚起见,本领域技术人员应当将说明书作为一个整体,各实施例中的技术方案也可以经适当组合,形成本领域技术人员可以理解的其他实施方式。
Claims (7)
1.用于边坡或河渠的土工格栅,其特征在于,包括:B和C的双层复合体叠加16-3000层而成的叠加复合体,所述B为玻纤改性聚丙烯或碳纤维改性聚丙烯,所述C为低压聚乙烯;所述土工格栅按照A-(BC)n-A的排列方式复合,其中n为BC双层结构的层数;n=16-3000,所述A包括无规聚丙烯。
2.根据权利要求1所述的土工格栅,其特征在于,所述B与C的重量比为(80-90):(10-30)。
3.如权利要求1或2所述的土工格栅,所述玻纤改性聚丙烯的玻纤为10-30%,碳纤维改性聚丙烯中的碳纤维10-30%。
4.如权利要求1所述的土工格栅,无规聚丙烯中可以添加D-色母料。
5.如权利要求4所述的土工格栅,其组成包括:A-无规聚丙烯5-20份、B 80-90份、C 10-30份、D-色母料2-10份,按重量份数计。
6.如权利要求1或2所述的土工格栅的制备方法,包括以下步骤:将B、C分别经混炼塑化挤出,经分配成B和C的双层复体,双层复体叠加16-3000层形成叠加复合体,将其与其它混炼塑化挤出物经分配挤出复合材料;所述挤出温度控制在160-280℃。
7.如权利要求4或5所述的土工格栅的制备方法,包括以下步骤:
(1)在A中加入D拌匀投入第一挤出机经混炼塑化挤出,B投入第二挤出机料斗内经混炼塑化挤出,C投入第三挤出机料斗内经混炼塑化挤出;挤出加工温度控制在160-280℃;
(2)将步骤(1)所得B挤出料和C挤出料通过分配器分成B、C的双层复体,然后叠加挤出16-3000层的叠加复合体;叠加复合体、A挤出料,通过分配机经分配挤出,经过T型头模具形成A-(BC)n-A复合材料;经压制、定型、冷却、切割为要求的片材;
(3)根据需要将片材进行分割、冲切形成不同宽度和厚度的带孔条状片材,间隔交叉焊接得到网状结构的土工格栅。
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