CN106820307A - Ptfe防护服 - Google Patents
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
- B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
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- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
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- B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
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- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
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- B32—LAYERED PRODUCTS
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- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
- B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/14—Mixture of at least two fibres made of different materials
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- B32B2307/00—Properties of the layers or laminate
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- B32B2307/554—Wear resistance
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- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/582—Tearability
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
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Abstract
本发明涉及一种FTFE防护服,属于防腐服装技术领域。PTFE防护服,用于制备PTFE防护服的布料是由三种材料复合而成的,包括PTFE织物面层、中间PTFE膜层和涤纶/锦纶织物里层;所述复合是采用热熔胶经热压复合。本发明采用PFTE织物制成复合材料的表层、PFTE膜制成复合材料的中层、涤纶/锦纶织物制成复合材料的里层;将这三层材料通过热熔胶热压复合后制得一种新材料;这种材料制备的防护服可替换现有技术中的全防护橡胶服,并具有轻便、透气、耐磨防腐蚀的优点。
Description
技术领域
本发明涉及一种FTFE防护服,属于防腐服装技术领域。
背景技术
在化工领域常常需要用到各种装载或输送腐蚀性物料的设备。而当这些设备出现故障的时候,有时候甚至需要人工检修。通常检修工人需要穿着厚重的全防护橡胶服。这种橡胶服不仅笨重,而且透气性差。尤其是夏天的时候,穿着极为不适,工人无法长时间穿着。
发明内容
本发明要解决上述问题,从而提供一种FTFE防护服。
本发明解决上述问题的技术方案如下:
PTFE防护服,用于制备PTFE防护服的布料是由三种材料复合而成的,包括PTFE织物面层、中间PTFE膜层和涤纶/锦纶织物里层;所述复合是采用热熔胶经热压复合。
作为上述技术方案的优选,所述涤纶/锦纶织物里层通过抓绒工艺制成或者通过针织工艺制成。
作为上述技术方案的优选,所述PTFE织物面层是将聚四氟乙烯拉伸膜经过分切步骤制成丝,接着经过加捻步骤制成线,再通过大圆机制成的针织面料;所述分切步骤为对聚四氟乙烯拉伸膜进行切丝,边切丝边拉伸,然后通过烘箱加热固定,在烘箱中停留30~60″,烘箱温度控制为350~450℃;所述加捻步骤为对经过加热固定的丝通过加捻机进行加捻,捻度控制为700~1000捻/m,然后对加捻后制得的线进行热定型的操作,本步骤中热定型温度为300~350℃。
作为上述技术方案的优选,分切步骤中的拉伸具体为,使分切制得的丝形成张紧状态的同时通过所述烘箱,拉伸倍率为1~2倍。
作为上述技术方案的优选,用于制备PTFE织物面层的聚四氟乙烯拉伸膜是通过以下方法制造而成:依次包括混合、筛分、预成型、挤出、压延、除润滑剂、拉伸定型、分切、加捻、织造的步骤;混合:在聚四氟乙烯微粉中混入低表面张力润滑油;筛分:用10~30目筛对上述混料进行筛分;预成型:将经筛分的混料置于20~40℃的温度下20~28小时;挤出:使用挤压机将上述预成型的原料挤出,挤压参数如下,挤出速度5~15mm/min,挤出直径15~25mm,口模长径比L/D为20~40,锥角30~50°,压缩比140~160;压延:使用压延机对挤出后的原料进行压延,压延时压辊温度控制为140~180℃,制得生料带;除润滑剂:在稍高于所述低表面张力润滑油的沸点的温度下对所述生料带干燥处理18~24小时,除去所述低表面张力润滑油;拉伸定型:对生料带除去所述低表面张力润滑油的同时进行纵向拉伸,然后进行一次热定型,接着进行首次横向拉伸,二次热定型,再次横向拉伸,二次热定型后制得纤维膜,拉伸定型时控制参数如下:纵向拉伸速率1%~10%/s,拉伸倍数2~6,一次热定型温度200~250℃,首次横向拉伸速率10~60mm/s,拉伸倍数2~10,二次热定型温度200~250℃,再次横向拉伸为对经过首次横向拉伸后的生料带再拉伸50~200倍,拉伸速率40~100 mm/s,三次热定型温度控制为250~300℃。
作为上述技术方案的优选,所述中间PTFE膜层是通过以下方法制造的:
(1)润滑混合:在聚四氟乙烯微粉中添加航空煤油,混匀;
(2)筛分:用10~30目筛进行筛分;
(3)改性混合:再添加硅油,再混匀;
(4)挤出:使用挤压机将改性混合的原料挤出,挤压参数如下,挤出速度5~15mm/min,挤出直径15~25mm,口模长径比L/D 为20~40,锥角30~50°,压缩比140~160;
(5)压延:使用压延机对挤出后的原料进行压延,压延时压辊温度控制为140~180℃,制得生料带;
(6)除航煤:在高于所述航空煤油的沸点的温度下对所述生料带干燥处理18~24 小时,除去所述航空煤油;
(7)拉伸:对生料带除去航空煤油的同时进行纵向拉伸,然后进行一次热定型;接着进行首次横向拉伸,二次热定型,再次横向拉伸,三次热定型,制得聚四氟乙烯纤维膜;拉伸定型时控制参数如下:纵向拉伸速率1%~10%/s,拉伸倍数2~6,一次热定型温度200 ~ 250℃;首次横向拉伸速率45~50mm/s,拉伸倍数20~25,二次热定型温度200~250℃;再次横向拉伸为对经过首次横向拉伸后的生料带再拉伸180~200 倍,拉伸速率20~30 mm/s,三次热定型温度控制为250~300℃,得成型膜;
(8)固化脱油:将所述成型膜在温度逐渐升高的多个区间分段式处理,所述分段式处理的起始温度为300~320℃,直至将所述成型膜加热至透明状,得成品膜。
本发明具有以下有益效果:
1、本发明采用PFTE织物制成复合材料的表层、PFTE膜制成复合材料的中层、涤纶/锦纶织物制成复合材料的里层;将这三层材料通过热熔胶热压复合后制得一种新材料;这种材料制备的防护服可替换现有技术中的全防护橡胶服,并具有轻便、透气、耐磨防腐蚀的优点。
2、本发明上述技术方案中,PFTE织物表层可以阻隔大部分的腐蚀性物质,并赋予复合材料本身较强的耐磨性和撕裂强度;中间的PTFE膜使得复合材料具有绝对的防腐蚀性,即避免已经透过PFTE织物表层的少量腐蚀性物质如人体接触;涤纶/锦纶织物制成复合材料的里层使得该材料具有良好的舒适感,并且涤纶/锦纶这些化学材料本身具有较弱的耐腐蚀性。
具体实施方式
本具体实施方式仅仅是对本发明的解释,并不是对本发明的限制,本领域技术人员在阅读了本发明的说明书之后所做的任何改变只要在权利要求书的范围内,都将受到专利法的保护。
PTFE防护服,其用于制备PTFE防护服的布料是由三种材料复合而成的,包括PTFE织物面层、中间PTFE膜层和涤纶/锦纶织物里层;所述复合是采用热熔胶经热压复合。所述涤纶/锦纶织物里层通过抓绒工艺制成或者通过针织工艺制成。所述PTFE织物面层是将聚四氟乙烯拉伸膜经过分切步骤制成丝,接着经过加捻步骤制成线,再通过大圆机制成的针织面料;所述分切步骤为对聚四氟乙烯拉伸膜进行切丝,边切丝边拉伸,然后通过烘箱加热固定,在烘箱中停留30~60″,烘箱温度控制为350~450℃;所述加捻步骤为对经过加热固定的丝通过加捻机进行加捻,捻度控制为700~1000捻/m,然后对加捻后制得的线进行热定型的操作,本步骤中热定型温度为300~350℃。分切步骤中的拉伸具体为,使分切制得的丝形成张紧状态的同时通过所述烘箱,拉伸倍率为1~2倍。
用于制备PTFE织物面层的聚四氟乙烯拉伸膜是通过以下方法制造而成:依次包括混合、筛分、预成型、挤出、压延、除润滑剂、拉伸定型、分切、加捻、织造的步骤;混合:在聚四氟乙烯微粉中混入低表面张力润滑油;筛分:用10~30目筛对上述混料进行筛分;预成型:将经筛分的混料置于20~40℃的温度下20~28小时;挤出:使用挤压机将上述预成型的原料挤出,挤压参数如下,挤出速度5~15mm/min,挤出直径15~25mm,口模长径比L/D为20~40,锥角30~50°,压缩比140~160;压延:使用压延机对挤出后的原料进行压延,压延时压辊温度控制为140~180℃,制得生料带;除润滑剂:在稍高于所述低表面张力润滑油的沸点的温度下对所述生料带干燥处理18~24小时,除去所述低表面张力润滑油;拉伸定型:对生料带除去所述低表面张力润滑油的同时进行纵向拉伸,然后进行一次热定型,接着进行首次横向拉伸,二次热定型,再次横向拉伸,二次热定型后制得纤维膜,拉伸定型时控制参数如下:纵向拉伸速率1%~10%/s,拉伸倍数2~6,一次热定型温度200~250℃,首次横向拉伸速率10~60mm/s,拉伸倍数2~10,二次热定型温度200~250℃,再次横向拉伸为对经过首次横向拉伸后的生料带再拉伸50~200倍,拉伸速率40~100 mm/s,三次热定型温度控制为250~300℃。
所述中间PTFE膜层是通过以下方法制造的:
(1)润滑混合:在聚四氟乙烯微粉中添加航空煤油,混匀;
(2)筛分:用10~30目筛进行筛分;
(3)改性混合:再添加硅油,再混匀;
(4)挤出:使用挤压机将改性混合的原料挤出,挤压参数如下,挤出速度5~15mm/min,挤出直径15~25mm,口模长径比L/D 为20~40,锥角30~50°,压缩比140~160;
(5)压延:使用压延机对挤出后的原料进行压延,压延时压辊温度控制为140~180℃,制得生料带;
(6)除航煤:在高于所述航空煤油的沸点的温度下对所述生料带干燥处理18~24 小时,除去所述航空煤油;
(7)拉伸:对生料带除去航空煤油的同时进行纵向拉伸,然后进行一次热定型;接着进行首次横向拉伸,二次热定型,再次横向拉伸,三次热定型,制得聚四氟乙烯纤维膜;拉伸定型时控制参数如下:纵向拉伸速率1%~10%/s,拉伸倍数2~6,一次热定型温度200 ~ 250℃;首次横向拉伸速率45~50mm/s,拉伸倍数20~25,二次热定型温度200~250℃;再次横向拉伸为对经过首次横向拉伸后的生料带再拉伸180~200 倍,拉伸速率20~30 mm/s,三次热定型温度控制为250~300℃,得成型膜;
(8)固化脱油:将所述成型膜在温度逐渐升高的多个区间分段式处理,所述分段式处理的起始温度为300~320℃,直至将所述成型膜加热至透明状,得成品膜。
Claims (6)
1.PTFE防护服,其特征在于:用于制备PTFE防护服的布料是由三种材料复合而成的,包括PTFE织物面层、中间PTFE膜层和涤纶/锦纶织物里层;所述复合是采用热熔胶经热压复合。
2.根据权利要求1所述的PTFE防护服,其特征在于:所述涤纶/锦纶织物里层通过抓绒工艺制成或者通过针织工艺制成。
3.根据权利要求1所述的PTFE防护服,其特征在于:所述PTFE织物面层是将聚四氟乙烯拉伸膜经过分切步骤制成丝,接着经过加捻步骤制成线,再通过大圆机制成的针织面料;所述分切步骤为对聚四氟乙烯拉伸膜进行切丝,边切丝边拉伸,然后通过烘箱加热固定,在烘箱中停留30~60″,烘箱温度控制为350~450℃;所述加捻步骤为对经过加热固定的丝通过加捻机进行加捻,捻度控制为700~1000捻/m,然后对加捻后制得的线进行热定型的操作,本步骤中热定型温度为300~350℃。
4.根据权利要求3所述的PTFE防护服,其特征在于:分切步骤中的拉伸具体为,使分切制得的丝形成张紧状态的同时通过所述烘箱,拉伸倍率为1~2倍。
5.根据权利要求3所述的PTFE防护服,其特征在于:用于制备PTFE织物面层的聚四氟乙烯拉伸膜是通过以下方法制造而成:依次包括混合、筛分、预成型、挤出、压延、除润滑剂、拉伸定型、分切、加捻、织造的步骤;混合:在聚四氟乙烯微粉中混入低表面张力润滑油;筛分:用10~30目筛对上述混料进行筛分;预成型:将经筛分的混料置于20~40℃的温度下20~28小时;挤出:使用挤压机将上述预成型的原料挤出,挤压参数如下,挤出速度5~15mm/min,挤出直径15~25mm,口模长径比L/D为20~40,锥角30~50°,压缩比140~160;压延:使用压延机对挤出后的原料进行压延,压延时压辊温度控制为140~180℃,制得生料带;除润滑剂:在稍高于所述低表面张力润滑油的沸点的温度下对所述生料带干燥处理18~24小时,除去所述低表面张力润滑油;拉伸定型:对生料带除去所述低表面张力润滑油的同时进行纵向拉伸,然后进行一次热定型,接着进行首次横向拉伸,二次热定型,再次横向拉伸,二次热定型后制得纤维膜,拉伸定型时控制参数如下:纵向拉伸速率1%~10%/s,拉伸倍数2~6,一次热定型温度200~250℃,首次横向拉伸速率10~60mm/s,拉伸倍数2~10,二次热定型温度200~250℃,再次横向拉伸为对经过首次横向拉伸后的生料带再拉伸50~200倍,拉伸速率40~100 mm/s,三次热定型温度控制为250~300℃。
6.根据权利要求1所述的防护服,其特征在于:所述中间PTFE膜层是通过以下方法制造的:
(1)润滑混合:在聚四氟乙烯微粉中添加航空煤油,混匀;
(2)筛分:用10~30目筛进行筛分;
(3)改性混合:再添加硅油,再混匀;
(4)挤出:使用挤压机将改性混合的原料挤出,挤压参数如下,挤出速度5~15mm/min,挤出直径15~25mm,口模长径比L/D 为20~40,锥角30~50°,压缩比140~160;
(5)压延:使用压延机对挤出后的原料进行压延,压延时压辊温度控制为140~180℃,制得生料带;
(6)除航煤:在高于所述航空煤油的沸点的温度下对所述生料带干燥处理18~24 小时,除去所述航空煤油;
(7)拉伸:对生料带除去航空煤油的同时进行纵向拉伸,然后进行一次热定型;接着进行首次横向拉伸,二次热定型,再次横向拉伸,三次热定型,制得聚四氟乙烯纤维膜;拉伸定型时控制参数如下:纵向拉伸速率1%~10%/s,拉伸倍数2~6,一次热定型温度200 ~ 250℃;首次横向拉伸速率45~50mm/s,拉伸倍数20~25,二次热定型温度200~250℃;再次横向拉伸为对经过首次横向拉伸后的生料带再拉伸180~200 倍,拉伸速率20~30 mm/s,三次热定型温度控制为250~300℃,得成型膜;
(8)固化脱油:将所述成型膜在温度逐渐升高的多个区间分段式处理,所述分段式处理的起始温度为300~320℃,直至将所述成型膜加热至透明状,得成品膜。
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