CN107177115B - 一种节能织物整芯阻燃输送带及其制造方法 - Google Patents

一种节能织物整芯阻燃输送带及其制造方法 Download PDF

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CN107177115B
CN107177115B CN201710341648.9A CN201710341648A CN107177115B CN 107177115 B CN107177115 B CN 107177115B CN 201710341648 A CN201710341648 A CN 201710341648A CN 107177115 B CN107177115 B CN 107177115B
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宋长江
袁陆海
魏雪梅
宋鑫
吕继明
王从开
周震宇
李朝红
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ANHUI ZHONGYI RUBBER BELTS CO LTD
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Abstract

本发明公开了一种节能织物整芯阻燃输送带及其制造方法,所述的输送带包括覆盖层、织物整体带芯及带芯浸渍胶料:覆盖层选用粉末顺丁橡胶/氯化聚乙烯/热塑性聚氨酯弹性体为主体材料,添加降低损耗因子的助剂,通过优化配方和工艺,使覆盖层的损耗因子(60℃时tanδ值)大幅度下降,减少了输送带的运行阻力;织物整体带芯径向受力线采用芳纶纤维与聚酯纤维并用,强度高,带体薄,浸胶塑化后重量轻,可使输送带运行过程中的能耗大幅度降低。本发明采用挤出机贴面成型、动态硫化工艺生产输送带,工艺简单、能源消耗低、生产效率高。

Description

一种节能织物整芯阻燃输送带及其制造方法
技术领域
本发明涉及输送带技术领域,具体地说,是一种节能织物整芯阻燃输送带及其制造方法。
背景技术
输送带是煤矿、冶金、矿山、港口、电力、建材等行业物料输送的主要工具,输送带的自重及滚动阻力消耗的能源占输送机能源消耗的75%左右,研究轻量化、低滚动阻力的节能输送带对于降低输送机的能源消耗,降低运行成本,提高经济效益具有重要意义。目前,国内外对于节能钢丝绳芯输送带的研究取得的成果较多,而对于用量最大的织物整芯阻燃输送带的节能研究较少。
发明内容
本发明的目的是克服现有技术的不足,提供一种节能织物整芯阻燃输送带,通过改变带芯材料和结构,减轻输送带自重,优化覆盖层配方,降低损耗因子(60℃时tanδ值),减少滚动阻力,达到节能降耗的目的。
本发明的另一目的是提供该输送带的制造方法,工艺简单,易于制造,生产成本低,生产效率高。
本发明的目的通过下述方案予以实现。
一种节能织物整芯阻燃输送带,包括覆盖层、织物整体带芯及带芯浸渍胶料:
所述的覆盖层厚度3-5mm,按重量比的组成是:粉末顺丁橡胶(PBR)30-40份,氯化聚乙烯(CPE) 30-40份,热塑性聚氨酯弹性体(TPU) 25-35份,氧化锌3份,硬脂酸1.5份,石蜡油2份,硫磺1-1.5份,过氧化二异丙苯(DCP)1-2份,氰脲酸三烯丙酯(TAC) 1-2份,促进剂1-2份,防老剂1-2份,导电炭黑10-15份,纳米白炭黑10-15份,芳纶浆粕8-10份,增塑剂10-20份,阻燃增塑剂10-20份,阻燃剂10-20份,硬脂酸铅1份,二碱式钛酸铅4份,硅烷偶联剂1-2份,抗静电剂4-6份;
所述的织物整体带芯由经线和纬线组成,3层编织结构,宽度是输送带带宽的105%-110%;经线由聚酯/芳纶/棉纤维组成,其中聚酯含量45%-70%,芳纶含量20%-40%,棉含量10%-15%,经向受力线拉伸强度为1000-3000N/根,密度为160-200根/10cm;纬线由尼龙/棉纤维组成,棉含量35%-45%,纬向受力线的拉伸强度为300-500N/根,密度150-180根/10cm;
所述的带芯浸渍胶料按重量比的组成是:聚氯乙烯糊树脂(EPVC)100份,二苯基甲烷二异氰酸酯(MDI)10-15份,增塑剂40-60份,阻燃增塑剂20-40份,阻燃剂15-25份,环氧大豆油10-20份,液体钡锌复合稳定剂2-4份。
所述的促进剂是2-硫醇基苯并噻唑(促进剂M)、二硫化二苯并噻唑(促进剂DM)、N-环己基-2-苯并噻唑次磺酰胺(促进剂CZ)、二硫化四甲基秋兰姆(促进剂TMTD)、二乙基二硫代氨基甲酸镉(促进剂CED)中的一种或组合;防老剂是N-苯基-α萘胺(防老剂A)、N-苯基-β萘胺(防老剂D)、2,2,4-三甲基-1,2-二氢化喹啉聚合体(树脂状)(防老剂RD)、2,2′-硫代双(4-甲基-6-叔丁基苯酚)(防老剂2246-S)、N-异丙基-N′-苯基对苯二胺(防老剂4010NA)中的一种或组合;增塑剂是邻苯二甲酸二辛酯(DOP)、癸二酸二辛酯(DOS)、己二酸二辛酯(DOA)中的一种或其组合;阻燃增塑剂是三芳基磷酸酯(TCP)、三(β一氯乙基)磷酸酯(TCEP)、三(1,3-二氯丙基)磷酸酯(TDCPP)、甲苯基二苯基磷酸酯(CDP)中的一种或组合;阻燃剂是氢氧化铝、氢氧化镁、硼酸锌、红磷、三氧化二锑、聚磷酸铵、三聚氰胺氰脲酸盐、十溴联苯醚中的一种或组合;硅烷偶联剂是乙烯基三氯硅烷(A-150)、乙烯基三乙氧基硅烷(A-151)、乙烯基三甲氧基硅烷(A-171)中的任意一种;抗静电剂是烷基磷酸酯二乙醇胺盐(抗静电剂P)、三羟乙基甲基季铵甲基硫酸盐(抗静电剂TM)、十八烷基二甲基羟乙基季铵硝酸盐(抗静电剂SA)中的任意一种。
本发明的节能织物整芯阻燃输送带的制造方法,包括以下步骤:
(1)编织织物整体带芯:
所述的织物整体带芯由经线和纬线组成,3层编织结构,宽度是带宽的105%-110%;经线由聚酯/芳纶/棉纤维组成,其中聚酯含量45%-70%,芳纶含量20%-40%,棉含量10%-15%,经向受力线拉伸强度为1000-3000N/根,密度为160-200根/10cm;纬线由尼龙/棉纤维组成,棉含量35%-45%,纬向受力线的拉伸强度为300-500N/根,密度150-180根/10cm。
(2)制备覆盖层胶料:
1) 所述的覆盖层胶料按重量比的组成是:粉末顺丁橡胶(PBR)30-40份,氯化聚乙烯(CPE) 30-40份,热塑性聚氨酯弹性体(TPU) 25-35份,氧化锌3份,硬脂酸1.5份,石蜡油2份,硫磺1-1.5份,过氧化二异丙苯(DCP)1-2份,氰脲酸三烯丙酯(TAC) 1-2份,促进剂1-2份,防老剂1-2份,导电炭黑10-15份,纳米白炭黑10-15份,芳纶浆粕8-10份,增塑剂10-20份,阻燃增塑剂10-20份,阻燃剂10-20份,硬脂酸铅1份,二碱式钛酸铅4份,硅烷偶联剂1-2份,抗静电剂4-6份;
2)将上述胶料混合、造粒,制得覆盖层胶料颗粒:
I:阻燃剂改性处理:将阻燃剂、芳纶浆粕、纳米白炭黑加入捏合机中加热搅拌,搅拌速度为350-400转/分钟,加热至40-60℃,开始喷洒硅烷偶联剂,继续加热搅拌,在120℃-130℃的温度下搅拌10-15分钟,制成表面改性阻燃剂;
II:高速捏合预塑化:将氯化聚乙烯、氧化锌、硬脂酸、石蜡油、促进剂、防老剂、导电炭黑、增塑剂、阻燃增塑剂、硬脂酸铅、二碱式钛酸铅、抗静电剂、表面改性阻燃剂依次加入高速混合机中,混合速度为1200-1400转/分钟,在140℃-150℃的温度下混合10-15分钟,制得预塑化料;
III:冷混合:将II步的预塑化料冷却至常温后加入低速混合机中,依次加入粉末顺丁橡胶、热塑性聚氨酯弹性体、硫磺、过氧化二异丙苯、氰脲酸三烯丙酯,常温下混合5-10分钟,混合机速度150-250转/分钟,制得冷混合料;
Figure 895219DEST_PATH_IMAGE001
:造粒:将III步的冷混合料通过双螺杆造粒机制成颗粒料,造粒机螺杆转速450-600转/分钟,温度155℃-165℃。
(3)制备带芯浸渍胶料:
1) 所述的浸渍胶料按重量比的组成是:聚氯乙烯糊树脂(EPVC) 1OO份,二苯基甲烷二异氰酸酯(MDI)10-15份,增塑剂40- 60份,阻燃增塑剂20- 40份,阻燃剂15-25份,环氧大豆油10-20份,液体钡锌复合稳定剂2-4份;
2)将上述胶料搅拌混合、研磨、脱泡,制得浸渍胶糊料:
I:高速搅拌混合:将聚氯乙烯糊树脂、二苯基甲烷二异氰酸酯、增塑剂、阻燃增塑剂、阻燃剂、环氧大豆油、液体钡锌复合稳定剂依次加入高速分散机中,常温下高速搅拌,搅拌器速度2500-2900转/分钟,搅拌时间20-30分钟,糊料粘度4000 -5500Pa.s;
II:研磨:将I步高速搅拌混合后的糊料通过三辊研磨机研磨三遍,研磨机辊距0.15-0.25mm,转速500-750转/分钟;
III:脱泡:将II步研磨后的糊料通过真空脱泡机脱泡,在真空度-0.05MPa至-0.085MPa的条件下常温脱泡20-30分钟,然后放入带芯浸渍池中。
(4)带芯浸胶、塑化:
1)带芯浸胶:织物整体带芯在牵引机的带动下,以1-2米/分钟的速度通过充满糊料的浸渍池和真空箱浸渍糊料,真空箱高度11米,真空度-0.05MPa至-0.085MPa;
2)带芯塑化:浸胶后的带芯进入塑化箱塑化,塑化温度170℃-190℃,塑化箱长度30米,带芯在塑化箱中的速度与浸胶速度一致。
(5)挤出贴面成型:将(2)步的覆盖层颗粒料通过两台挤出机及模具动态硫化,直接与(4)步的塑化带芯在热状态下贴合在一起,覆盖层3-5mm;
挤出机转速:30-50转/分钟:
挤出机温度:160℃-175℃;
模具温度:160℃-175℃;
带芯表面温度:145℃-165℃。
与现有技术相比,本发明具有以下有益效果:
1、本发明的织物整体带芯径向受力线采用芳纶纤维与聚酯纤维并用,强度高,带体薄,浸胶塑化后重量轻,与同等强度的织物整芯阻燃输送带、叠层阻燃输送带及钢丝绳芯阻燃输送带相比,成品带的重量分别平均下降31.8%、27.6%和62.2%,可使输送带运行过程中的能耗大幅度降低。
2、本发明使织物整芯阻燃输送带的最高强度从目前技术的2500N/mm提高到4500N/mm,为重载、长距离带式输送机的节能降耗提供了有效的途径。
3、本发明的覆盖层选用粉末顺丁橡胶/氯化聚乙烯/热塑性聚氨酯弹性体为主体材料,添加降低损耗因子的助剂,通过优化配方和工艺,使覆盖层的损耗因子(60℃时tanδ值)大幅度下降,与同等强度的织物整芯阻燃输送带、叠层阻燃输送带及钢丝绳芯阻燃输送带相比,覆盖层的损耗因子分别平均下降30.6%、33%和33.6%,减少了输送带的运行阻力,从而达到节能降耗的目的。
4、本发明的带芯浸渍胶料中含有二苯基甲烷二异氰酸酯(MDI)增粘剂,使塑化后的整体带芯与覆盖层的粘合强度大幅度提高,确保输送带长期运行不脱层。
5、本发明采用挤出机贴面成型、动态硫化工艺生产输送带,具有工艺简单、能源消耗低、生产效率高等优点。
具体实施方式
通过下述实施例有助于对本发明的理解,但不能限制本发明的内容。
本发明所述的输送带,要求纵向全厚度拉伸强度不低于1250-4500N/mm。
实施例l
本实施例提供一种节能织物整芯阻燃输送带,带宽1000mm,要求纵向全厚度拉伸强度≥1250N/mm,包括覆盖层、织物整体带芯及带芯浸渍胶料:
所述的覆盖层厚度3mm,按重量比的组成是:PBR 30份,CPE 40份, TPU 30份,氧化锌3份,硬脂酸1.5份,石蜡油2份,硫磺1份, DCP 2份, TAC 2份,促进剂M 1份,促进剂DM0.5份,防老剂A 1份,防老剂D 0.5份,导电炭黑10份,纳米白炭黑15份,芳纶浆粕8份,DOP15份,TCP 10份,TCEP 5份,氢氧化铝10份,三氧化二锑6份,硬脂酸铅1份,二碱式钛酸铅4份,硅烷偶联剂A-150 1.5份,抗静电剂P 4份;
所述的织物整体带芯由经线和纬线组成,3层编织结构,宽度1100mm;经线由聚酯/芳纶/棉纤维组成,其中聚酯含量70%,芳纶含量20%,棉含量10%,经向受力线拉伸强度为1000N/根,密度为160根/10cm;纬线由尼龙/棉纤维组成,棉含量35%,纬向受力线的拉伸强度为300N/根,密度150根/10cm;
所述的带芯浸渍胶料按重量比的组成是:EPVC100份, MDI 10份,DOP 50份,TCP40份,三氧化二锑8份,硼酸锌10份,环氧大豆油10份,液体钡锌复合稳定剂2份。
本实施例提供一种节能织物整芯阻燃输送带的制造方法,包括以下步骤:
(1)编织织物整体带芯:
所述的织物整体带芯由经线和纬线组成,3层编织结构,宽度1100mm;经线由聚酯/芳纶/棉纤维组成,其中聚酯含量70%,芳纶含量20%,棉含量10%,经向受力线拉伸强度为1000N/根,密度为160根/10cm;纬线由尼龙/棉纤维组成,棉含量35%,纬向受力线的拉伸强度为300N/根,密度150根/10cm。
(2)制备覆盖层胶料:
1) 所述的覆盖层胶料按重量比的组成是:PBR 30份,CPE 40份, TPU 30份,氧化锌3份,硬脂酸1.5份,石蜡油2份,硫磺1份, DCP 2份, TAC 2份,促进剂M 1份,促进剂DM0.5份,防老剂A 1份,防老剂D 0.5份,导电炭黑10份,纳米白炭黑15份,芳纶浆粕8份,DOP15份,TCP 10份,TCEP 5份,氢氧化铝10份,三氧化二锑6份,硬脂酸铅1份,二碱式钛酸铅4份,硅烷偶联剂A-150 1.5份,抗静电剂P 4份;
2)将上述胶料混合、造粒,制得覆盖层胶料颗粒:
I:阻燃剂改性处理:将阻燃剂、芳纶浆粕、纳米白炭黑加入捏合机中加热搅拌,搅拌速度为350-400转/分钟,加热至40-60℃,开始喷洒硅烷偶联剂,继续加热搅拌,在120℃-130℃的温度下搅拌10-15分钟,制成表面改性阻燃剂;
II:高速捏合预塑化:将氯化聚乙烯(CPE)、氧化锌、硬脂酸、石蜡油、促进剂、防老剂、导电炭黑、增塑剂、阻燃增塑剂、硬脂酸铅、二碱式钛酸铅、抗静电剂、表面改性阻燃剂依次加入高速混合机中,混合速度为1200-1400转/分钟,在140℃-150℃的温度下混合10-15分钟,制得预塑化料;
III:冷混合:将II步的预塑化料冷却至常温后加入低速混合机中,依次加入粉末顺丁橡胶(PBR)、热塑性聚氨酯弹性体( TPU)、硫磺、过氧化二异丙苯(DCP)、氰脲酸三烯丙酯(TAC),常温下混合5-10分钟,混合机速度150-250转/分钟,制得冷混合料;
Figure 904763DEST_PATH_IMAGE001
:造粒:将III步的冷混合料通过双螺杆造粒机制成颗粒料,造粒机螺杆转速450-600转/分钟,温度155℃-165℃。
(3)制备带芯浸渍胶料:
1) 所述的浸渍胶料按重量比的组成是:EPVC100份,MDI10份,DOP 50份,TCP 40份,三氧化二锑8份,硼酸锌10份,环氧大豆油10份,液体钡锌复合稳定剂2份;
2)将上述胶料搅拌混合、研磨、脱泡,制得浸渍胶糊料:
I:高速搅拌混合:将EPVC、MDI、DOP、TCP、三氧化二锑、硼酸锌、环氧大豆油、液体钡锌复合稳定剂依次加入高速分散机中,常温下高速搅拌,搅拌器速度2500 -2900转/分钟,搅拌时间20-30分钟,糊料粘度4000-5500Pa.s;
II:研磨:将I步高速搅拌混合后的糊料通过三辊研磨机研磨三遍,研磨机辊距0.15-0.25mm,转速500-750转/分钟;
III:脱泡:将II步研磨后的糊料通过真空脱泡机脱泡,在真空度-0.05MPa至-0.085MPa的条伴下常温脱泡20-30分钟,然后放入带芯浸渍池中。
(4)带芯浸胶、塑化:
1)带芯浸胶:织物整体带芯在牵引机的带动下,以1.4-1.6米/分钟的速度通过充满糊料的浸渍池和真空箱浸渍糊料,真空箱高度11米,真空度-0.05MPa至-0.085MPa;
2)带芯塑化:浸胶后的带芯进入塑化箱塑化,塑化温度170℃-190℃,塑化箱长度30米,带芯在塑化箱中的速度与浸胶速度一致。
(5)挤出贴面成型:将(2)步的覆盖层颗粒料通过两台挤出机及模具动态硫化,直接与(4)步的塑化带芯在热状态下贴合在一起,覆盖层3mm;
挤出机转速:30-50转/分钟;
挤出机温度:160℃-175℃;
模具温度:160℃--175℃;
带芯表面温度:145℃-165℃。
本实施例实测宽度1000mm,厚度10.8mm,上下覆盖层分别为3.1mm和3.2mm,纵向全厚度拉伸强度1310N/mm,单位质量13kg/m,覆盖层损耗因子(60℃时tanδ值)0.115,拉伸强度16.5Mpa,拉断伸长率451%,DIN磨耗132mm3,其余指标符合MT914-2008《煤矿用织物整芯阻燃输送带》的要求。
本实施例与本公司同等强度、宽度的织物整芯阻燃输送带PVG1250S 1000×(3+3)、叠层阻燃输送带EP1250/4P 1000×(2+4)、钢丝绳芯阻燃输送带ST/S1250 1000×(6+6)的单位质量、覆盖层损耗因子(60℃时tanδ值)对比如下:
本实施例与PVG1250S、EP1250/4P、ST/S1250的对比数据:
Figure 407289DEST_PATH_IMAGE002
注:覆盖层损耗因子是指60℃时tanδ值。
本实施例与本公司的PVG1250S 1000×(3+3) 织物整芯阻燃输送带相比,单位质量下降22.62%,覆盖层损耗因子下降31.14%;与本公司的EP1250/4P 1000×(2+4) 叠层阻燃输送带相比,单位质量下降21.21%,覆盖层损耗因子下降33.14%;与本公司的ST/S12501000×(6+6)钢丝绳芯阻燃输送带相比,单位质量下降56.81%,覆盖层损耗因子下降33.9%,节能效果显著。
实施例2
本实施例提供一种节能织物整芯阻燃输送带,带宽1200mm, 要求纵向全厚度拉伸强度≥2500N/mm,包括覆盖层、织物整体带芯及带芯浸渍胶料:
所述的覆盖层厚度4mm,按重量比的组成是:PBR 35份,CPE 30份, TPU 35份,氧化锌3份,硬脂酸1.5份,石蜡油2份,硫磺1份, DCP 1份, TAC 1份,促进剂CZ 1份,促进剂TDTM0.5份,防老剂RD1份,防老剂2246-S 1份,导电炭黑12份,纳米白炭黑12份,芳纶浆粕9份,DOS 15份,TCEP 10份,TDCPP 5份,三聚氰胺氰脲酸盐5份,十溴联苯醚10份,硬脂酸铅1份,二碱式钛酸铅4份,硅烷偶联剂A-151 1.5份,抗静电剂TM 5份;
所述的织物整体带芯由经线和纬线组成,3层编织结构,宽度1278mm;经线由聚酯/芳纶/棉纤维组成,其中聚酯含量63%,芳纶含量25%,棉含量12%,经向受力线拉伸强度为2000N/根,密度为170根/10cm;纬线由尼龙/棉纤维组成,棉含量40%,纬向受力线的拉伸强度为400N/根,密度160根/10cm;
所述的带芯浸渍胶料按重量比的组成是:EPVC100份,MDI12份,DOA 45份,TCEP 35份,红磷10份,氢氧化铝10份,环氧大豆油15份,液体钡锌复合稳定剂3份。
本实施例提供一种节能织物整芯阻燃输送带的制造方法,包括以下步骤:
(1)编织织物整体带芯:
所述的织物整体带芯由经线和纬线组成,3层编织结构,宽度1278mm;经线由聚酯/芳纶/棉纤维组成,其中聚酯含量63%,芳纶含量25%,棉含量12%,经向受力线拉伸强度为2000N/根,密度为170根/10cm;纬线由尼龙/棉纤维组成,棉含量40%,纬向受力线的拉伸强度为400N/根,密度160根/10cm。
(2)制备覆盖层胶料:
1) 所述的覆盖层胶料按重量比的组成是:PBR 35份,CPE 30份, TPU 35份,氧化锌3份,硬脂酸1.5份,石蜡油2份,硫磺1份, DCP 1份, TAC 1份,促进剂CZ 1份,促进剂TDTM0.5份,防老剂RD1份,防老剂2246-S 1份,导电炭黑12份,纳米白炭黑12份,芳纶浆粕9份,DOS 15份,TCEP 10份,TDCPP 5份,三聚氰胺氰脲酸盐5份,十溴联苯醚10份,硬脂酸铅1份,二碱式钛酸铅4份,硅烷偶联剂A-151 1.5份,抗静电剂TM 5份;
2)将上述胶料混合、造粒,制得覆盖层胶料颗粒:
I:阻燃剂改性处理:将阻燃剂、芳纶浆粕、纳米白炭黑加入捏合机中加热搅拌,搅拌速度为350-400转/分钟,加热至40-60℃,开始喷洒硅烷偶联剂,继续加热搅拌,在120℃-130℃的温度下搅拌10-15分钟,制成表面改性阻燃剂;
II:高速捏合预塑化:将氯化聚乙烯(CPE)、氧化锌、硬脂酸、石蜡油、促进剂、防老剂、导电炭黑、增塑剂、阻燃增塑剂、硬脂酸铅、二碱式钛酸铅、抗静电剂、表面改性阻燃剂依次加入高速混合机中,混合速度为1200-1400转/分钟,在140℃-150℃的温度下混合10-15分钟,制得预塑化料;
III:冷混合:将II步的预塑化料冷却至常温后加入低速混合机中,依次加入粉末顺丁橡胶(PBR)、热塑性聚氨酯弹性体( TPU)、硫磺、过氧化二异丙苯(DCP)、氰脲酸三烯丙酯(TAC),常温下混合5-10分钟,混合机速度150-250转/分钟,制得冷混合料;
Figure 476876DEST_PATH_IMAGE001
:造粒:将III步的冷混合料通过双螺杆造粒机制成颗粒料,造粒机螺杆转速450-600转/分钟,温度155℃-165℃。
(3)制备带芯浸渍胶料:
1) 所述的浸渍胶料按重量比的组成是:EPVCIOO份,MDI 12份,DOA 45份,TCEP 35份,红磷10份,氢氧化铝10份,环氧大豆油15份,液体钡锌复合稳定剂3份;
2)将上述胶料搅拌混合、研磨、脱泡,制得浸渍胶糊料;
I:高速搅拌混合:EPVC、MDI、DOA、TCEP、三氧化二锑、红磷、氢氧化铝、环氧大豆油、液体钡锌复合稳定剂依次加入高速分散机中,常温下高速搅拌,搅拌器速度2500-2900转/分钟,搅拌时间20--30分钟,糊料粘度4000-5000Pa.s;
II:研磨:将I步高速搅拌混合后的糊料通过三辊研磨机研磨三遍,研磨机辊距-0.15MPa-0.25mm,转速500-750转/分钟;
III:脱泡:将II步研磨后的糊料通过真空脱泡机脱泡,在真空度-0.05Ma至-0.085MPa的条件下常温脱泡20-30分钟,然后放入带芯浸渍池中。
(4)带芯浸胶、塑化:
1)带芯浸胶:织物整体带芯在牵引机的带动下,以1.2-1.4米/分钟的速度通过充满糊料的浸渍池和真空箱浸渍糊料,真空箱高度11米,真空度-0.05MPa至-0.085Mpa;
2)带芯塑化:浸胶后的带芯进入塑化箱塑化,塑化温度170℃-190℃,塑化箱长度30米,带芯在塑化箱中的速度与浸胶速度一致。
(5)挤出贴面成型:将(2)步的覆盖层颗粒料通过两台挤出机及模具动态硫化,直接与(4)步的塑化带芯在热状态下贴合在一起,覆盖层4mm;
挤出机转速:30-50转/分钟;
挤出机温度:160℃-175℃;
模具温度:160℃-175℃;
带芯表面温度:145℃-165℃。
本实施例实测宽度1202mm,厚度12.8mm,上下覆盖层分别为4.1mm和4.0mm,纵向全厚度拉伸强度2610N/mm,单位质量18.5kg/m,覆盖层损耗因子(60℃时tanδ值)0.116,拉伸强度16.6Mpa,拉断伸长率455%,DIN磨耗136mm3,其余指标符合MT914-2008《煤矿用织物整芯阻燃输送带》的要求。
本实施例与本公司同等强度、宽度的织物整芯阻燃输送带PVG2500S 1200×(4+4)、叠层阻燃输送带EP2500/5P 1200×(3+5)、钢丝绳芯阻燃输送带ST/S2500 1200×(8+6)的单位质量、覆盖层损耗因子(60℃时tanδ值)对比如下:
Figure 940218DEST_PATH_IMAGE003
注:覆盖层损耗因子是指60℃时tanδ值。
本实施例与本公司的PVG2500S 1200×(4+4) 织物整芯阻燃输送带相比,单位质量下降35.76%,覆盖层损耗因子下降30.12%;与本公司的EP2500/5P 1200×(3+5) 叠层阻燃输送带相比,单位质量下降33.92%,覆盖层损耗因子下降32.94%;与本公司的ST/S25001200×(8+6)钢丝绳芯阻燃输送带相比,单位质量下降62.63%,覆盖层损耗因子下降33.71%,节能效果显著。
实施例3
本实施例提供一种节能织物整芯阻燃输送带,带宽1400mm, 要求纵向全厚度拉伸强度≥4500N/mm,包括覆盖层、织物整体带芯及带芯浸渍胶料:
所述的覆盖层厚度5mm,按重量比的组成是:PBR 40份,CPE 35份, TPU 25份,氧化锌3份,硬脂酸1.5份,石蜡油2份,硫磺1份, DCP 1.5份, TAC 1.5份,促进剂CED 1份,促进剂TDTM 0.5份,防老剂RD1份,防老剂4010NA 0.5份,导电炭黑15份,纳米白炭黑10份,芳纶浆粕10份,DOA 15份,TDCPP 10份,CDP 5份,氢氧化镁10份,硼酸锌10份,硬脂酸铅1份,二碱式钛酸铅4份,硅烷偶联剂A-171 1.5份,抗静电剂SA 6份;
所述的织物整体带芯由经线和纬线组成,3层编织结构,宽度1470mm;经线由聚酯/芳纶/棉纤维组成,其中聚酯含量45%,芳纶含量40%,棉含量15%,经向受力线拉伸强度为3000N/根,密度为200根/10cm;纬线由尼龙/棉纤维组成,棉含量45%,纬向受力线的拉伸强度为500N/根,密度180根/10cm;
所述的带芯浸渍胶料按重量比的组成是:EPVC100份,MDI15份,DOS 60份,TDCPP20份,聚磷酸铵10份,氢氧化镁12份,环氧大豆油20份,液体钡锌复合稳定剂4份。
本实施例提供一种节能织物整芯阻燃输送带的制造方法,包括以下步骤:
(1)编织织物整体带芯:
所述的织物整体带芯由经线和纬线组成,3层编织结构,宽度1470mm;经线由聚酯/芳纶/棉纤维组成,其中聚酯含量45%,芳纶含量40%,棉含量15%,经向受力线拉伸强度为3000N/根,密度为200根/10cm;纬线由尼龙/棉纤维组成,棉含量45%,纬向受力线的拉伸强度为500N/根,密度180根/10cm。
(2)制备覆盖层胶料,所述的覆盖层胶料:
1)按重量比的组成是:
PBR 40份,CPE 35份, TPU 25份,氧化锌3份,硬脂酸1.5份,石蜡油2份,硫磺1份,DCP 1.5份, TAC 1.5份,促进剂CED 1份,促进剂TDTM 0.5份,防老剂RD1份,防老剂4010NA0.5份,导电炭黑15份,纳米白炭黑10份,芳纶浆粕10份,DOA 15份,TDCPP 10份,CDP 5份,氢氧化镁10份,硼酸锌10份,硬脂酸铅1份,二碱式钛酸铅4份,硅烷偶联剂A-171 1.5份,抗静电剂SA 6份;
2)将上述胶料混合、造粒,制得覆盖层胶料颗粒:
I:阻燃剂改性处理:将阻燃剂、芳纶浆粕、纳米白炭黑加入捏合机中加热搅拌,搅拌速度为350-400转/分钟,加热至40-60℃,开始喷洒硅烷偶联剂,继续加热搅拌,在120℃-130℃的温度下搅拌10-15分钟,制成表面改性阻燃剂;
II:高速捏合预塑化:将氯化聚乙烯(CPE)、氧化锌、硬脂酸、石蜡油、促进剂、防老剂、导电炭黑、增塑剂、阻燃增塑剂、硬脂酸铅、二碱式钛酸铅、抗静电剂、表面改性阻燃剂依次加入高速混合机中,混合速度为1200-1400转/分钟,在140℃-150℃的温度下混合10-15分钟,制得预塑化料;
III:冷混合:将II步的预塑化料冷却至常温后加入低速混合机中,依次加入粉末顺丁橡胶(PBR)、热塑性聚氨酯弹性体(TPU)、硫磺、过氧化二异丙苯(DCP)、氰脲酸三烯丙酯(TAC),常温下混合5-10分钟,混合机速度150-250转/分钟,制得冷混合料;
Figure 753453DEST_PATH_IMAGE001
:造粒:将III步的冷混合料通过双螺杆造粒机制成颗粒料,造粒机螺杆转速450-600转/分钟,温度155℃-165℃。
(3)制备带芯浸渍胶料,所述的浸渍胶料:
1)按重量比的组成是:EPVC 100份,MDI 15份,DOS 60份,TDCPP 20份,聚磷酸铵10份,氧氧化镁l2份,环氧大豆油20份,液体钡锌复合稳定剂4份;
2)将上述胶料揽拌混合、研磨、脱泡,制得浸渍胶糊料:
I:高速搅拌混合:EPVC、MDI、DOS. TDCPP、聚磷酸铵、氢氧化镁、环氧大豆油、液体钡锌复合稳定剂依次加入高速分散机中,常温下高速搅拌,搅拌器速度2500-2900转/分钟,搅拌时间20--30分钟,糊料粘度4000--5500Pa.S;
II:研磨:将I步高速搅拌混合后的糊料通过三辊研磨机研
磨三遍,研磨机辊距0.15-0.25mm,转速500-750转/分钟;
III:脱泡:将II步研磨后的糊料通过真空脱泡机脱泡,在真空度-0.05MPa至-0.085MPa的条件下常温脱泡20-30分钟,然后放入带芯浸渍池中。
(4)带芯浸胶、塑化:
1)带芯浸胶:织物整体带芯在牵引机的带动下,以1.0-1.2米/分钟的速度通过充满糊料的浸渍池和真空箱浸渍糊料,真空箱高度11米,真空度-0.05MPa至-0.085Mpa;
2)带芯塑化:浸胶后的带芯进入塑化箱塑化,塑化温度170℃-190℃,塑化箱长度30米,带芯在塑化箱中的速度与浸胶速度一致。
(5)挤出贴面成型:将(2)步的覆盖层颗粒料通过两台挤出机及模具动态硫化,直接与(4)步的塑化带芯在热状态下贴合在一起,覆盖层5mm;
挤出机转速:30-50转/分钟;
挤出机温度:160℃-175℃;
模具温度:160℃-175℃;
带芯表面温度145℃-165℃。
本实施例实测宽度1400mm,厚度16.5mm,上下覆盖层分别为5.2mm和5.0mm,纵向全厚度拉伸强度4625N/mm,单位质量27.5kg/m,覆盖层损耗因子(60℃时tanδ值)0.114,拉伸强度16.8Mpa,拉断伸长率458%,DIN磨耗135mm3,其余指标符合MT914-2008《煤矿用织物整芯阻燃输送带》的要求。
目前国内外均无与本实施例同等强度的织物整芯阻燃输送带及叠层阻燃输送带,本实施例与本公司生产的ST/S4500 1400×(8+6)钢丝绳芯阻燃输送带相比,单位质量下降67.25%,覆盖层损耗因子下降33.52%,节能效果显著。

Claims (7)

1.一种节能织物整芯阻燃输送带,包括覆盖层、织物整体带芯及带芯浸渍胶料,其特征在于:
所述的覆盖层厚度3-5mm,按重量比的组成是:粉末顺丁橡胶30-40份,氯化聚乙烯30-40份,热塑性聚氨酯弹性体25-35份,氧化锌3份,硬脂酸1.5份,石蜡油2份,硫磺1-1.5份,过氧化二异丙苯1-2份,氰脲酸三烯丙酯1-2份,促进剂1-2份,防老剂1-2份,导电炭黑10-15份,纳米白炭黑10-15份,芳纶浆粕8-10份,增塑剂10-20份,阻燃增塑剂10-20份,阻燃剂10-20份,硬脂酸铅1份,二碱式钛酸铅4份,硅烷偶联剂1-2份,抗静电剂4-6份;
所述的织物整体带芯由经线和纬线组成,3层编织结构,宽度是带宽的105%-110%;经线由聚酯/芳纶/棉纤维组成,其中聚酯含量45%-70%,芳纶含量20%-40%,棉含量10%-15%,经向受力线拉伸强度为1000-3000N/根,密度为160-200根/10cm;纬线由尼龙/棉纤维组成,棉含量35%-45%,纬向受力线的拉伸强度为300-500N/根,密度150-180根/10cm;
所述的带芯浸渍胶料按重量比的组成是:聚氯乙烯糊树脂100份,二苯基甲烷二异氰酸酯10-15份,增塑剂40-60份,阻燃增塑剂20-40份,阻燃剂15-25份,环氧大豆油10-20份,液体钡锌复合稳定剂2-4份;
所述的增塑剂是邻苯二甲酸二辛酯、癸二酸二辛酯、己二酸二辛酯中的一种或其组合;
所述的阻燃增塑剂是三芳基磷酸酯、三(β一氯乙基)磷酸酯、三(1,3-二氯丙基)磷酸酯、甲苯基二苯基磷酸酯中的一种或组合。
2.根据权利要求l所述的节能织物整芯阻燃输送带,其特征在于所述的促进剂是2-硫醇基苯并噻唑、二硫化二苯并噻唑、N-环己基-2-苯并噻唑次磺酰胺、二硫化四甲基秋兰姆、二乙基二硫代氨基甲酸镉中的一种或组合。
3.根据权利要求1所述的节能织物整芯阻燃输送带,其特征在于所述的防老剂是N-苯基-α萘胺、N-苯基-β萘胺、2,2,4-三甲基-1,2-二氢化喹啉聚合体、2,2′-硫代双(4-甲基-6-叔丁基苯酚)、N-异丙基-N′-苯基对苯二胺中的一种或组合。
4.根据权利要求1所述的节能织物整芯阻燃输送带,其特征在于所述的阻燃剂是氢氧化铝、氢氧化镁、硼酸锌、红磷、三氧化二锑、聚磷酸铵、三聚氰胺氰脲酸盐、十溴联苯醚中的一种或组合。
5.根据权利要求1所述的节能织物整芯阻燃输送带,其特征在于所述的硅烷偶联剂是乙烯基三氯硅烷、乙烯基三乙氧基硅烷、乙烯基三甲氧基硅烷中的任意一种。
6.根据权利要求1所述的节能织物整芯阻燃输送带,其特征在于所述的抗静电剂是烷基磷酸酯二乙醇胺盐、三羟乙基甲基季铵甲基硫酸盐、十八烷基二甲基羟乙基季铵硝酸盐中的任意一种。
7.一种如权利要求l所述的节能织物整芯阻燃输送带的制造方法,其特征在于,包括以下步骤:
(1)编织织物整体带芯:
所述的织物整体带芯由经线和纬线组成,3层编织结构,宽度是带宽的105%-110%;经线由聚酯/芳纶/棉纤维组成,其中聚酯含量45%-70%,芳纶含量20%-40%,棉含量10%-15%,经向受力线拉伸强度为1000-3000N/根,密度为160-200根/10cm;纬线由尼龙/棉纤维组成,棉含量35%-45%,纬向受力线的拉伸强度为300-500N/根,密度150-180根/10cm;
(2)制备覆盖层胶料:
1) 所述的覆盖层胶料按重量比的组成是:粉末顺丁橡胶30-40份,氯化聚乙烯30-40份,热塑性聚氨酯弹性体25-35份,氧化锌3份,硬脂酸1.5份,石蜡油2份,硫磺1-1.5份,过氧化二异丙苯1-2份,氰脲酸三烯丙酯1-2份,促进剂1-2份,防老剂1-2份,导电炭黑10-15份,纳米白炭黑10-15份,芳纶浆粕8-10份,增塑剂10-20份,阻燃增塑剂10-20份,阻燃剂10-20份,硬脂酸铅1份,二碱式钛酸铅4份,硅烷偶联剂1-2份,抗静电剂4-6份;
2)将上述胶料混合、造粒,制得覆盖层胶料颗粒:
I:阻燃剂改性处理:将阻燃剂、芳纶浆粕、纳米白炭黑加入捏合机中加热搅拌,搅拌速度为350-400转/分钟,加热至40-60℃,开始喷洒硅烷偶联剂,继续加热搅拌,在120℃-130℃的温度下搅拌10-15分钟,制成表面改性阻燃剂;
II:高速捏合预塑化:将氯化聚乙烯、氧化锌、硬脂酸、石蜡油、促进剂、防老剂、导电炭黑、增塑剂、阻燃增塑剂、硬脂酸铅、二碱式钛酸铅、抗静电剂、表面改性阻燃剂依次加入高速混合机中,混合速度为1200-1400转/分钟,在140℃-150℃的温度下混合10-15分钟,制得预塑化料;
III:冷混合:将II步的预塑化料冷却至常温后加入低速混合机中,依次加入粉末顺丁橡胶、热塑性聚氨酯弹性体、硫磺、过氧化二异丙苯、氰脲酸三烯丙酯,常温下混合5-10分钟,混合机速度150-250转/分钟,制得冷混合料;
Figure 362593DEST_PATH_IMAGE001
:造粒:将III步的冷混合料通过双螺杆造粒机制成颗粒料,造粒机螺杆转速450-600转/分钟,温度155℃-165℃;
(3)制备带芯浸渍胶料:
1) 所述的浸渍胶料按重量比的组成是:聚氯乙烯糊树脂1OO份,二苯基甲烷二异氰酸酯10-15份,增塑剂40- 60份,阻燃增塑剂20- 40份,阻燃剂15-25份,环氧大豆油10-20份,液体钡锌复合稳定剂2-4份;
2)将上述胶料搅拌混合、研磨、脱泡,制得浸渍胶糊料:
I:高速搅拌混合:将聚氯乙烯糊树脂、二苯基甲烷二异氰酸酯、增塑剂、阻燃增塑剂、阻燃剂、环氧大豆油、液体钡锌复合稳定剂依次加入高速分散机中,常温下高速搅拌,搅拌器速度2500-2900转/分钟,搅拌时间20-30分钟,糊料粘度4000 -5500Pa.s;
II:研磨:将I步高速搅拌混合后的糊料通过三辊研磨机研磨三遍,研磨机辊距0.15-0.25mm,转速500-750转/分钟;
III:脱泡:将II步研磨后的糊料通过真空脱泡机脱泡,在真空度-0.05MPa至-0.085MPa的条件下常温脱泡20-30分钟,然后放入带芯浸渍池中;
(4)带芯浸胶、塑化:
1)带芯浸胶:织物整体带芯在牵引机的带动下,以1-2米/分钟的速度通过充满糊料的浸渍池和真空箱浸渍糊料,真空箱高度11米,真空度-0.05MPa至-0.085MPa;
2)带芯塑化:浸胶后的带芯进入塑化箱塑化,塑化温度170℃-190℃,塑化箱长度30米,带芯在塑化箱中的速度与浸胶速度一致;
(5)挤出贴面成型:将(2)步的覆盖层颗粒料通过两台挤出机及模具动态硫化,直接与(4)步的塑化带芯在热状态下贴合在一起,覆盖层3-5mm;
挤出机转速:30-50转/分钟;
挤出机温度:160℃-175;
模具温度:160℃-175℃;
带芯表面温度:145℃-165℃。
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