CN112873769A - 一种利用废旧塑封料制备透水砖的方法 - Google Patents
一种利用废旧塑封料制备透水砖的方法 Download PDFInfo
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Abstract
本发明公开一种利用废旧塑封料制备透水砖的方法,步骤一、废旧塑封料粉碎;步骤二、粒料筛分;步骤三、粒料级配;步骤四、将步骤三中级配好的粒料进行热压注塑成型后制得带孔的透水砖,且孔整体上呈现出我公司名称科化首字母KH字样。本发明具有如下技术效果:本发明利用废旧塑封料,通过对废旧塑封料进行粉碎、筛分、级配后得到粒料,在温度:175℃,压力:50MPa,保压时间:400s的注塑机上进行热压成型后得到带孔的透水砖,且孔的整体外观组成我公司科化首字母KH字样,另外制备的透水砖性能优良,最高能够达到抗压强度68 MPa,抗折强度12MPa,磨坑长度15mm,抗疲劳性能均>30000次。
Description
技术领域
本发明公开一种利用废旧塑封料制备透水砖的方法,本发明涉及废旧塑封料再利用技术领域、透水砖技术领域。
背景技术
近年来,城镇化建设及经济的不断发展,现代城市路面中水泥混凝土、沥青基混凝土路面占比高达90%以上,这些路面大多不透水,容易造成雨水堆积及道路淹没交通瘫痪等社会问题。
目前市场上建材领域的一些透水砖、透水路面等材料主要原料采用陶瓷、混凝土及高分子材料,目前出现的高分子材料透水砖,主要由双酚A型环氧树脂、氨类固化剂、不同粒径级配的砂粒、着色剂组成树脂占比约为3.5%左右。塑封料主要由多官能环氧树脂、酚醛环氧树脂、硅微粉、着色剂组成树脂占比可达15%。塑封料的抗压强度、耐候性远远高于双酚A型环氧树脂,硅微粉的强度、分散性也远远大于普通砂粒。
我公司每年生产的环氧塑封废旧料可达15-20吨,环氧塑封废旧料属于难降解垃圾不能直接进行垃圾处理,需要支付昂贵垃圾处理费,据统计我公司环氧塑封废旧料每年需支付20万左右的垃圾处理费。
发明内容
本发明的目的是克服现有技术的不足,提供一种利用废旧塑封料制备透水砖的方法。
本发明的技术方案如下:
一种利用废旧塑封料制备透水砖的方法,包括如下步骤:
1)废旧塑封料破碎:使用塑料破碎机进行破碎后得到粒料;
2)废旧塑封料筛分:从上到下依次使用20、30、40、50、60和200目的筛网对步骤1)粉碎后的粒料进行筛分,得到20-30目、30-40目、40-50目、50-60目和60-200目颗粒粒料;
3)将步骤2)得到的粒料进行粒料级配得到集料,集料中各粒料的重量份含量分别如下:20-30目粒料为2-8重量份,30-40目粒料为10-33重量份,40-50目粒料为28-64重量份;50-60目粒料为10-33重量份,60-200目粒料为2-8重量份;
4)透水砖的加工:将步骤3)得到的集料进行注塑成型,注塑前用脱模剂擦拭注塑头,注塑成型后脱模冷却;注塑工艺为:注塑温度175℃,注塑压力50MPa,保压时间400s。
优选地;
所述的步骤3)中,集料中各粒料的重量份含量分别如下:20-30目粒料为8重量份,30-40目粒料为20重量份,40-50目粒料为44重量份;50-60目粒料为20重量份,60-200目为8重量份。
所述的步骤4)中,脱模剂为水性氟树脂。
本发明具有如下技术效果:本发明利用废旧塑封料,通过对废旧塑封料进行粉碎、筛分、级配后得到粒料,在温度:175℃,压力:50MPa,保压时间:400s的注塑机上进行热压成型后得到带孔的透水砖,且孔的整体外观组成我公司科化首字母KH字样,另外制备的透水砖性能优良,最高能够达到抗压强度68MPa,抗折强度12MPa,磨坑长度15mm,抗疲劳性能均>30000次。
附图说明
图1为所制备的透水砖的正面外形图。
图2为所制备的透水砖的侧面外形图。
图3为所制备的透水砖的侧面外形图。
具体实施方式
本发明的实施例中所用的材料来源如下:
废旧塑封料:北京科化新材有限公司生产所得的废旧塑封料。
脱模剂:水性氟树脂m2-1(上海乐瑞固化工有限公司);
实施例1-6
一、利用废旧塑封料制备透水砖的方法,包括如下步骤:
1)废旧塑封料破碎,
将10Kg废旧塑封料加入粉碎机后,粉碎2min得到粒料备用。(粉碎机型号:57粉碎机厂家:常州明一干燥设备有限公司,转速:2000rpm/min)
2)废旧塑封料筛分
将破碎后的粒料加入从上到下依次20、30、40、50、60和200目的筛网进行旋震筛分,在筛分机上震动筛分10min后依次得到20-30目、30-40目,40-50目,50-60目,60-200目单颗粒粒料。(筛分机型号:旋振筛厂家:新乡市福泽机械设备有限公司)
3)粒料级配
实施例1-6按照表1进行粒料级配。
表1粒料级配表
20-30目/Kg | 30-40目/Kg | 40-50目/Kg | 50-60目/Kg | 60-200目/Kg | |
实施例1 | 8 | 20 | 44 | 20 | 8 |
实施例2 | 5 | 30 | 30 | 30 | 5 |
实施例3 | 2 | 33 | 30 | 33 | 2 |
实施例4 | 8 | 28 | 28 | 28 | 8 |
实施例5 | 8 | 15 | 54 | 15 | 8 |
实施例6 | 8 | 10 | 64 | 10 | 8 |
4)透水砖的加工
将级配好的粒料进行注塑成型,注塑前用脱模剂m2-1擦拭注塑头。
注塑条件:注塑条件对照及结果见表2:
表2注塑条件对照及结果
注塑温度/℃ | 注塑压力/MPa | 保压时间/S | 注塑结果 | |
条件1 | 175 | 50 | 400 | 固化完全,未缺角 |
条件2 | 140 | 50 | 400 | 固化不完全,缺角 |
条件3 | 175 | 20 | 400 | 固化不完全,缺角 |
条件4 | 175 | 40 | 400 | 固化不完全,缺角 |
条件5 | 175 | 50 | 300 | 固化不完全,缺角 |
条件6 | 175 | 50 | 500 | 固化完全,未缺角 |
由表2看出:
透水砖注塑工艺为:注塑温度175℃、注塑压力50MPa、保压时间400s时注塑的透水砖固化完全,未缺角。
注塑温度175℃、注塑压力50MPa、保压时间500s时注塑的透水砖固化完全,未缺角。
考虑节约能耗,本发明采用的注塑工艺为:注塑温度175℃,注塑压力50MPa,保压时间400s。
二、实施例1-6透水砖的性能评价:
1、透水性能
因本发明为大孔透水,所以不测试透水砖的透水性能。
2、抗压强度
抗压强度试验在无锡市建筑材料仪器机械厂生产的压力试验机NYC-300C上进行。试验选取5块砖样,每块砖上下受压面应平行、平整;将试样放入室温水中浸泡24h后,放置在试验机下压板中心位置,然后将垫压板放在试样的上表面中心位置,垫压板尺寸为120mm×60mm(长×宽),启动试验机,按0.4MPa/s~0.6MPa/s均匀连续的加荷,直至试样破坏,记录试样破坏时的破坏荷载,抗压强度按公式1进行计算。
式中:
Rc——抗压强度(MPa);
P——破坏荷载(N);
A——试样上垫压板面积或试样受压面积(mm2)。试验结果表3。
3、抗折强度
抗折强度试验在浙江中科仪器有限公司生产的WE-1000B万能材料试验机上进行。试验选取5块试样,清除表面粘渣、毛刺,放入室温水中浸泡24h后取出,顺着长度方向置于支座上,表面朝上,支距为试样厚度的四倍,在支座及加压棒与试样接触面之间应垫有3~5mm胶合板垫层。启动试验机,调整加荷速度为120N/s~180N/s,连续均匀地加荷,连续均匀地加荷,直至试样破坏,记录抗折破坏荷载。
抗折强度按公式2进行计算,试验结果见表3所示。
式中:
Nc——抗折强度(MPa);
P——最大破坏荷载(N);
B——试样宽度(mm);
H——试样厚度(mm);
L——加荷跨距(mm)。
4、耐磨性能
耐磨性能试验参考GBT12988-2009无机地面材料耐磨性能试验方法进行。
采用摩擦钢轮在规定条件和磨料作用下,在透水砖试件表面产生磨坑,测量磨坑的长度来表征试件的耐磨性,摩擦钢轮为HB203~245钢质轮,磨料采用ISO标准砂,配重砣质量为14kg。
试验各选取三块试样,每块试样分别在表面上相互垂直的两个不同部位进行试验。试件固定后,调整摩擦钢轮以75r/min转速匀速转动,磨料以1L/min的速度均匀落下,持续摩擦1min后,测定磨坑长度。
5、抗疲劳性能
抗疲劳性能是采用西安力创(LETRY)高频疲劳机进行试验,疲劳试验的加载过程采用计算机控制,试验采用应力控制模式,通过采用相同的应力水平来对透水砖进行三分点加载,跨距为16cm,加载波形统一采用正弦波,频率为50Hz,在试验中,为了避免长时间实验可能出现的零点漂移而引起的脱空现象,从而对试件产生冲击作用,本试验设置了最大和最小荷载,锁定静载数值,调节动态幅值,出现裂缝或破坏时记录循环次数。循环次数即为透水砖的疲劳寿命,试验结果见表3所示。
6、透水砖性能测试结果:
用注塑工艺:注塑温度175℃,注塑压力50MPa,保压时间400s,对表1中实施例1-6的级配料进行注塑成型后测试透水砖的抗压强度性能见表3。
表3透水砖性能测试表
由上述实施例1-6的性能测试表看出,本发明利用废旧塑封料,通过对废旧塑封料进行粉碎、筛分、级配后得到粒料,在温度:175℃,压力:50MPa,保压时间:400s的注塑机上进行热压成型后得到带孔的透水砖,且孔的整体外观组成我公司科化首字母KH字样,如图1-3所示。本发明实施例1的级配料制备的透水砖性能最优,其抗压强度68MPa,抗折强度12MPa,磨坑长度15mm,抗疲劳性能均>30000次。
以上仅为本发明的实施例,并非因此限制本发明的专利范围,凡是利用本发明说明书内容所作的等效变换,或直接或间接运用在其它相关的技术领域,均同理包括在本发明的专利保护范围内。
Claims (3)
1.一种利用废旧塑封料制备透水砖的方法,其特征在于,包括如下步骤:
1)废旧塑封料破碎:使用塑料破碎机进行破碎后得到粒料;
2)废旧塑封料筛分:从上到下依次使用20、30、40、50、60和200目的筛网对步骤1)粉碎后的粒料进行筛分,得到20-30目、30-40目、40-50目、50-60目和60-200目颗粒粒料;
3)将步骤2)得到的粒料进行粒料级配得到集料,集料中各粒料的重量份含量分别如下:20-30目粒料为2-8重量份,30-40目粒料为10-33重量份,40-50目粒料为28-64重量份;50-60目粒料为10-33重量份,60-200目粒料为2-8重量份;
4)透水砖的加工:将步骤3)得到的集料进行注塑成型,注塑前用脱模剂擦拭注塑头,注塑成型后脱模冷却;注塑工艺为:注塑温度175℃,注塑压力50MPa,保压时间400s。
2.根据权利要求1所述的利用废旧塑封料制备透水砖的方法,其特征在于,所述的步骤3)中,集料中各粒料的重量份含量分别如下:20-30目粒料为8重量份,30-40目粒料为20重量份,40-50目粒料为44重量份;50-60目粒料为20重量份,60-200目为8重量份。
3.根据权利要求1所述的利用废旧塑封料制备透水砖的方法,其特征在于,所述的步骤4)中,脱模剂为水性氟树脂。
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