CN107082915A - 一种低卤、低烟织物整芯阻燃输送带及其制造方法 - Google Patents
一种低卤、低烟织物整芯阻燃输送带及其制造方法 Download PDFInfo
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- CN107082915A CN107082915A CN201710341636.6A CN201710341636A CN107082915A CN 107082915 A CN107082915 A CN 107082915A CN 201710341636 A CN201710341636 A CN 201710341636A CN 107082915 A CN107082915 A CN 107082915A
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Classifications
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
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- B65G15/38—Belts or like endless load-carriers made of rubber or plastics with flame-resistant layers, e.g. of asbestos, glass
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L23/10—Homopolymers or copolymers of propene
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L75/04—Polyurethanes
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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Abstract
本发明公开了一种低卤、低烟织物整芯阻燃输送带及其制造方法，覆盖层选用聚丙烯（PP）、粉末丁腈橡胶、热塑性聚氨酯弹性体(TPU)等无卤的高分子材料和不含卤、锑的阻燃剂，带芯浸渍胶料选用不含卤、锑的阻燃剂，通过优化配方和工艺，生产的织物整芯阻燃输送带不仅全面满足MT914‑2008《煤矿用织物整芯阻燃输送带》的要求，而且低毒、低烟，是一种安全环保的输送带；采用挤出机贴面成型、动态硫化工艺，工艺简单、能源消耗低，生产效率高。
Description
技术领域
本发明涉及输送带技术领域，具体地说，是一种低卤、低烟织物整芯阻燃输送带及其制造方法。
背景技术
织物整芯阻燃输送带是目前煤矿输送煤炭的主要工具，因其阻燃抗静电性能好，且价格较低，因此深受煤矿的欢迎。但，目前技术生产的织物整芯阻燃输送带都大量使用含卤、锑的阻燃材料，要么基体材料选用含氯的高分子材料，要么大量添加含卤、锑的阻燃剂，虽然有很好的阻燃性能，但在发生火灾时，被引燃的输送带产生大量的有毒气体和烟雾，一是妨碍救灾工作的顺利进行，对生命财产造成二次灾害，二是腐蚀设备和仪器，三是造成环境污染。
发明内容
本发明的目的是克服现有技术的不足提供一种低卤、低烟织物整芯阻燃输送带，覆盖层选用无卤的高分子材料和不含卤、锑的阻燃剂，带芯浸渍胶料选用不含卤、锑的阻燃剂，通过优化配方和工艺，不仅全面满足MT914-2008《煤矿用织物整芯阻燃输送带》的要求，而且低毒、低烟、安全、环保。
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。
本发明的低卤、低烟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：
所述的覆盖层按重量比的组成是：聚丙烯（PP）30-40份，粉末丁腈橡胶（PNBR）30-40份，热塑性聚氨酯弹性体(TPU) 25-35份，聚丙烯接枝马来酸酐共聚物(PP-g-MA)5-10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)2-3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，液体无卤阻燃剂20-40份，固体无卤阻燃剂20-40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，液体丁腈橡胶12份，增塑剂40-60份，液体无卤阻燃剂40-60份，固体无卤阻燃剂30-50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；所述的防老剂是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；所述的液体无卤阻燃剂可选用磷酸三甲苯酯（TCP）、三丁氧乙基磷酸酯（TBEP）、磷酸三辛酯（TOP）中的任意一种；所述的固体无卤阻燃剂可选用氢氧化铝、氢氧化镁、硼酸锌、红磷、聚磷酸铵、三聚氰胺氰脲酸盐的一种或其组合；所述的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；所述的抗静电剂是烷基苯磷酸酯二乙醇胺盐(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。
本发明的低卤、低烟织物整芯阻燃输送带的制造方法，包括以下步骤：
(1)制备覆盖层胶料：
1) 所述的覆盖层胶料按重量比的组成是：聚丙烯（PP）30-40份，粉末丁腈橡胶（PNBR）30-40份，热塑性聚氨酯弹性体(TPU) 25-35份，聚丙烯接枝马来酸酐共聚物(PP-g-MA)5-10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)2-3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，液体无卤阻燃剂20-40份，固体无卤阻燃剂20-40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：将固体无卤阻燃剂、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：将聚丙烯、聚丙烯接枝马来酸酐共聚物、氧化锌、硬脂酸、石蜡油、促进剂、防老剂、导电炭黑、增塑剂、液体无卤阻燃剂、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，依次加入粉末丁腈橡胶、热塑性聚氨酯弹性体、硫磺、过氧化二异丙苯、,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；
：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170℃-180℃。
(2)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）100份，二苯基甲烷二异氰酸酯（MDI）10-15份，液体丁腈橡胶12份，增塑剂40-60份，液体无卤阻燃剂40-60份，固体无卤阻燃剂30-50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、液体丁腈橡胶、增塑剂、液体无卤阻燃剂、固体无卤阻燃剂、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。
(3)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。
(4)挤出贴面成型：将(1)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(3)步的塑化带芯在热状态下贴合在一起：
挤出机转速：30-50转／分钟；
挤出机温度：170℃-180℃；
模具温度：170℃-180℃；
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、覆盖层选用无卤的高分子材料和不含卤、锑的阻燃剂，带芯浸渍胶料选用不含卤、锑的阻燃剂，通过优化配方和工艺，生产的织物整芯阻燃输送带不仅全面满足MT914-2008《煤矿用织物整芯阻燃输送带》的要求，而且低毒、低烟，燃烧时产生的烟气中卤化氢气体含量小于100 PPM，含卤总量小于50PPM，产烟密度小于50 SDR，可有效避免输送带引燃时产生大量有毒有害气体和烟雾，对生命财产造成二次灾害、腐蚀设备仪器和污染环境等问题，便于救灾工作的顺利进行，是一种安全环保的输送带。
2、采用挤出机贴面成型、动态硫化工艺，工艺简单、能源消耗低、生产效率高。
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。
实施例l
本实施例提供一种低卤、低烟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:
所述的覆盖层按重量比的组成是：PP 30份，PNBR 40份， TPU 30份， PP-g-MA 5份，氧化锌3份，硬脂酸1.5份，石蜡油2份，硫磺1.5份， DCP 2份，促进剂M 1份，促进剂DM 0.5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，DOP 15份，TCP 10份，TBEP 10份，氢氧化铝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-150 1.5份，抗静电剂P 4份；
所述的带芯浸渍胶料按重量比的组成是：EPVC100份， MDI 10份，液体丁腈橡胶12份，DOP 50份，TCP 40份，氢氧化铝15份，硼酸锌15份，环氧大豆油10份，液体钡锌复合稳定剂2份。
本实施例提供一种低卤、低烟织物整芯阻燃输送带的制造方法，包括以下步骤：
(1)制备覆盖层胶料：
1) 所述的覆盖层胶料按重量比的组成是：PP 30份，PNBR 40份， TPU 30份， PP-g-MA5份，氧化锌3份，硬脂酸1.5份，石蜡油2份，硫磺1.5份， DCP 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，TBEP 10份，氢氧化铝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-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：将固体无卤阻燃剂、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：将聚丙烯（PP）、聚丙烯接枝马来酸酐共聚物(PP-g-MA)、氧化锌、硬脂酸、石蜡油、促进剂、防老剂、导电炭黑、增塑剂、液体无卤阻燃剂、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，依次加入粉末丁腈橡胶(PNBR)、热塑性聚氨酯弹性体（TPU）、硫磺、过氧化二异丙苯(DCP),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；
：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170℃-180℃。
(2)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， MDI 10份，液体丁腈橡胶12份，DOP 50份，TCP 40份，氢氧化铝15份，硼酸锌15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、液体丁腈橡胶、DOP、TCP、氢氧化铝、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。
(3)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。
(4)挤出贴面成型：将(1)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(3)步的塑化带芯在热状态下贴合在一起：
挤出机转速：30-50转／分钟；
挤出机温度：170℃-180℃；
模具温度：170℃--180℃；
带芯表面温度：145℃-165℃。
经测试，本实施例的输送带燃烧时产生的烟气中卤化氢气体含量为85 PPM，含卤总量45 PPM，产烟密度46 SDR，其余指标全部符合MT914-2008《煤矿用织物整芯阻燃输送带》标准要求。
实施例2
本实施例提供一种低卤、低烟织物整芯阻燃输送的带，包括覆盖层、织物整体带芯及带芯浸渍胶料:
所述的覆盖层按重量比的组成是：PP 35份，PNBR 30份， TPU 35份， PP-g-MA 10份，氧化锌3份，硬脂酸1.5份，石蜡油2份，硫磺1份， DCP 2.5份，促进剂CZ 1份，促进剂TDTM 0.5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，DOS15份，TCP 15份，TOP 15份，三聚氰胺氰脲酸盐15份，红磷 10份，氢氧化镁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；
所述的带芯浸渍胶料按重量比的组成是：EPVC100份，MDI12份，液体丁腈橡胶12份，DOA50份，TCP 25份，TOP 25份，红磷20份，氢氧化铝25份，环氧大豆油15份，液体钡锌复合稳定剂3份。
本实施例提供一种低卤、低烟织物整芯阻燃输送带的制造方法，包括以下步骤：
(1)制备覆盖层胶料：
1) 所述的覆盖层胶料按重量比的组成是：PP 35份，PNBR 30份， TPU 35份， PP-g-MA10份，氧化锌3份，硬脂酸1.5份，石蜡油2份，硫磺1份， DCP 2.5份，促进剂CZ 1份，促进剂TDTM 0.5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，TCP 15份，TOP 15份，三聚氰胺氰脲酸盐15份，红磷 10份，氢氧化镁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：将固体无卤阻燃剂、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：将聚丙烯（PP）、聚丙烯接枝马来酸酐共聚物(PP-g-MA)、氧化锌、硬脂酸、石蜡油、促进剂、防老剂、导电炭黑、增塑剂、液体无卤阻燃剂、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，依次加入粉末丁腈橡胶(PNBR)、热塑性聚氨酯弹性体(TPU)、硫磺、过氧化二异丙苯(DCP),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；
：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170℃-180℃。
(2)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，MDI12份，液体丁腈橡胶12份，DOA50份，TCP 25份，TOP 25份，红磷20份，氢氧化铝25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：将EPVC、MDI、液体丁腈橡胶、DOA、TCP、TOP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0.15-0.25mm，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。
(3)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猢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。
(4)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(3)步的塑化带芯在热状态下贴合在一起；
挤出机转速：30-50转／分钟；
挤出机温度：170℃-180℃；
模具温度：170℃-18℃；
带芯表面温度：145℃-165℃。
经测试，本实施例的输送带燃烧时产生的烟气中卤化氢气体含量为82 PPM，含卤总量43 PPM，产烟密度45 SDR，其余指标全部符合MT914-2008《煤矿用织物整芯阻燃输送带》标准要求。
实施例3
本实施例提供一种低卤、低烟织物整芯阻燃输送的带，包括覆盖层、织物整体带芯及带芯浸渍胶料:
所述的覆盖层按重量比的组成是：PP 40份，PNBR 35份， TPU 25份， PP-g-MA 10份，氧化锌3份，硬脂酸1.5份，石蜡油2份，硫磺1份， DCP 3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 20份，TBEP 20份，TOP 20份，氢氧化镁20份，聚磷酸铵20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；
所述的带芯浸渍胶料按重量比的组成是：EPVC100份，MDI15份，液体丁腈橡胶12份，DOS60份，TBEP 30份，TOP 30份，聚磷酸铵25份，氢氧化镁25份，环氧大豆油20份，液体钡锌复合稳定剂4份。
本实施例提供一种低卤、低卤织物整芯阻燃输送带的制造方法，包括以下步骤：
(1)制备覆盖层胶料：
1) 所述的覆盖层胶料按重量比的组成是：PP 40份，PNBR 35份， TPU 25份， PP-g-MA10份，氧化锌3份，硬脂酸1.5份，石蜡油2份，硫磺1份， DCP 3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 20份，TBEP 20份，TOP 20份，氢氧化镁20份，聚磷酸铵20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：将固体无卤阻燃剂、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：将聚丙烯（PP）、聚丙烯接枝马来酸酐共聚物(PP-g-MA)、氧化锌、硬脂酸、石蜡油、促进剂、防老剂、导电炭黑、增塑剂、液体无卤阻燃剂、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，依次加入粉末丁腈橡胶(PNBR)、热塑性聚氨酯弹性体(TPU)、硫磺、过氧化二异丙苯(DCP),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；
：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170℃-180℃。
(2)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，MDI15份，液体丁腈橡胶12份，DOS60份，TBEP 30份，TOP 30份，聚磷酸铵25份，氢氧化镁25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：将EPVC、MDI、液体丁腈橡胶、DOS、TBEP 、TOP、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。
(3)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。
(4)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(3)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：170℃-180℃；
模具温度：170℃-180℃；
带芯表面温度145℃-165℃。
经测试，本实施例的输送带燃烧时产生的烟气中卤化氢气体含量为78 PPM，含卤总量41 PPM，产烟密度43 SDR，其余指标全部符合MT914-2008《煤矿用织物整芯阻燃输送带》标准要求。
Claims (9)
1.一种低卤、低烟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：
所述的覆盖层按重量比的组成是：聚丙烯30-40份，粉末丁腈橡胶30-40份，热塑性聚氨酯弹性体25-35份，聚丙烯接枝马来酸酐共聚物5-10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2-3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，液体无卤阻燃剂20-40份，固体无卤阻燃剂20-40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，液体丁腈橡胶12份，增塑剂40-60份，液体无卤阻燃剂40-60份，固体无卤阻燃剂30-50份，环氧大豆油10-20份，液体钡锌复合稳定剂2-4份。
2.根据权利要求l所述的低卤、低烟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所述的低卤、低烟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l所述的低卤、低烟织物整芯阻燃输送带，其特征在于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。
5.根据权利要求l所述的低卤、低烟织物整芯阻燃输送带，其特征在于所述的液体无卤阻燃剂可选用磷酸三甲苯酯、三丁氧乙基磷酸酯、磷酸三辛酯中的任意一种。
6.根据权利要求1所述的低卤、低烟织物整芯阻燃输送带，其特征在于所述的固体无卤阻燃剂可选用氢氧化铝、氢氧化镁、硼酸锌、红磷、聚磷酸铵、三聚氰胺氰脲酸盐的一种或其组合。
7.根据权利要求1所述的低卤、低烟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。
8.根据权利要求1所述的低卤、低烟织物整芯阻燃输送带，其特征在于所述的抗静电剂是烷基苯磷酸酯二乙醇胺盐、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。
9.一种如权利要求l所述的低卤、低烟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)制备覆盖层胶料：
1) 所述的覆盖层胶料按重量比的组成是：
聚丙烯30-40份，粉末丁腈橡胶30-40份，热塑性聚氨酯弹性体25-35份，聚丙烯接枝马来酸酐共聚物5-10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2-3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，液体无卤阻燃剂20-40份，固体无卤阻燃剂20-40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：将固体无卤阻燃剂、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：将聚丙烯、聚丙烯接枝马来酸酐共聚物、氧化锌、硬脂酸、石蜡油、促进剂、防老剂、导电炭黑、增塑剂、液体无卤阻燃剂、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，依次加入粉末丁腈橡胶、热塑性聚氨酯弹性体、硫磺、过氧化二异丙苯、,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；
：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170℃-180℃；
(2)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100份，二苯基甲烷二异氰酸酯10-15份，液体丁腈橡胶12份，增塑剂40-60份，液体无卤阻燃剂40-60份，固体无卤阻燃剂30-50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、液体丁腈橡胶、增塑剂、液体无卤阻燃剂、固体无卤阻燃剂、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；
(3)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；
(4)挤出贴面成型：将(1)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(3)步的塑化带芯在热状态下贴合在一起：
挤出机转速：30-50转／分钟；
挤出机温度：170℃-180℃；
模具温度：170℃-180℃；
带芯表面温度：145℃-165℃。
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| CN110734640A (zh) * | 2019-11-23 | 2020-01-31 | 上海米莜凯自动化装备有限公司 | 一种耐温变型输送带及其制备方法 |
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