CN114434923A - 一种环保阻燃型橡塑复合棚被 - Google Patents
一种环保阻燃型橡塑复合棚被 Download PDFInfo
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- CN114434923A CN114434923A CN202210234226.2A CN202210234226A CN114434923A CN 114434923 A CN114434923 A CN 114434923A CN 202210234226 A CN202210234226 A CN 202210234226A CN 114434923 A CN114434923 A CN 114434923A
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- parts
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- polytetrafluoroethylene
- aging
- plastic composite
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 29
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Abstract
本发明涉及棚被技术领域,提出了一种环保阻燃型橡塑复合棚被,所述复合棚被包括由上至下依次设置的聚四氟乙烯抗老化层、中间保温层和防火硅纤维贴面层;聚四氟乙烯抗老化层包括以下重量份的组分:聚四氟乙烯60‑100份,氟碳表面活性剂4‑7份,三异硬脂酰基钛酸异丙酯1‑1.5份,多孔碳酸钙13‑18份;中间保温层包括以下重量份的组分:丁腈橡胶15‑20份,聚氯乙烯树脂3‑5份,乙烯‑醋酸乙烯酯共聚物3‑5份,滑石粉20‑30份,氯化石蜡油13‑15份,环氧豆油1‑2份,防护蜡2‑4份,炭黑3‑5份,活性剂0.2‑0.3份,硬脂酸0.1‑0.3份,阻燃剂10‑20份,防老剂0.1‑0.3份,促进剂1‑3份,硫化剂0.1‑0.3份。通过上述技术方案,解决了相关技术中的保温棚被抗老化性和阻燃性差的问题。
Description
技术领域
本发明涉及棚被技术领域,具体的,涉及一种环保阻燃型橡塑复合棚被。
背景技术
理想的保温棚被应同时具有保温性、防水防潮性、透光性、收放自如、使用寿命长等特点。随着温室种植业的快速发展,保温棚被也在逐渐被农户所接受。保温棚被作为大棚的“棉衣”,覆盖在大棚表面,提高大棚温度的同时提高了大棚的抗风、抗雨雪能力。
保温棚被多以稻草毡和多层无纺布棉毡为主,存在以下问题:保温棚被在使用一段时间后保温性能下降,是由于在室外环境中,下雨、下雪、夜晚结露结霜等天气导致水缓慢渗入棚被中使棉被变潮湿,从而导致棚被的保温性能大大降低,其次,保温棚被的易燃,且燃烧时会产生有毒气体,不环保。
为了解决上述问题,申请号为201310632648.6的发明专利申请公开了一种泡沫保温被,包括被体,被体由外到内依次为外防水层、外保温层、内保温层、内防火层,具有良好的保温、防水和防火效果,但是,由于其外防水层采用防水橡胶布,该防水橡胶布的耐候性差和阻燃性均较差,导致该保温被在室外环境中炎热或寒冷天气中长时间使用时,防水橡胶布会老化龟裂分解等,从而影响保温被的使用寿命,同时,防水橡胶布的阻燃性能差,虽然该保温被内层有防火层,但外层并不防火,也会影响保温被的使用。
发明内容
本发明提出一种环保阻燃型橡塑复合棚被,解决了现有技术中的保温棚被抗老化性和阻燃性差的问题。
本发明的技术方案如下:
一种环保阻燃型橡塑复合棚被,包括由上至下依次设置的聚四氟乙烯抗老化层、中间保温层和防火硅纤维贴面层,
所述聚四氟乙烯抗老化层包括以下重量份的组分:聚四氟乙烯60-100份,阴离子氟碳表面活性剂4-7份,三异硬脂酰基钛酸异丙酯1-1.5份,多孔碳酸钙13-18份。
作为进一步的技术方案,所述中间保温层包括以下重量份的组分:丁腈橡胶15-20份,聚氯乙烯树脂3-5份,发泡剂4-7份,乙烯-醋酸乙烯酯共聚物3-5份,滑石粉20-30份,氯化石蜡油13-15份,环氧豆油1-2份,防护蜡2-4份,炭黑3-5份,活性剂0.2-0.3份,硬脂酸0.1-0.3份,阻燃剂10-20份,防老剂0.1-0.3份,促进剂1-3份,硫化剂0.1-0.3份。
作为进一步的技术方案,所述防火硅纤维贴面层为涂覆氟硅橡胶的玻璃纤维布层,所述氟硅橡胶与所述玻璃纤维布的质量比为(10-15):(85-90)。
作为进一步的技术方案,所述聚四氟乙烯抗老化层的厚度为0.2mm,所述中间层的厚度为1-5cm,所述防火硅纤维贴面层的厚度为0.2mm。
作为进一步的技术方案,所述多孔碳酸钙的粒径为200-300nm。
作为进一步的技术方案,所述多孔碳酸钙的制备方法包括以下步骤:将氯化钙溶解在泊洛沙姆水溶液中,加入碳酸钠,溶解后在60-70℃下反应8-10h,将所得产物离心洗涤干燥后的得到多孔碳酸钙。
作为进一步的技术方案,所述氯化钙与所述碳酸钠的摩尔比为1:1。
作为进一步的技术方案,所述聚四氟乙烯抗老化层的制备方法包括以下步骤:将聚四氟乙烯与阴离子氟碳表面活性剂、多孔碳酸钙混合后熔融挤出,得到聚四氟乙烯抗老化层。
作为进一步的技术方案,所述聚四氟乙烯抗老化层与所述中间保温层、所述防火硅纤维贴面层通过热压复合得到环保型橡塑复合棚被。
本发明的工作原理及有益效果为:
1、本发明中,在中间保温层上设置聚四氟乙烯抗老化层,聚四氟乙烯抗老化层以聚四氟乙烯为基体,与阴离子氟碳表面活性剂、三异硬脂酰基钛酸异丙酯、多孔碳酸钙混合后熔融挤出,其中,聚四氟乙烯与碳酸钙相互配伍,显著提高了聚四氟乙烯抗老化层的耐候性,聚四氟乙烯与阴离子氟碳表面活性剂协同作用,显著提高了聚四氟乙烯抗老化层的阻燃性,从而该以聚四氟乙烯抗老化层为上层的橡塑复合棚被具有良好的抗老化性和阻燃性,有效解决了现有技术中的保温棚被抗老化性和阻燃性差的问题。
2、本发明中,上层聚四氟乙烯抗老化层具有良好的阻燃性,下层防火硅纤维贴面层也具有良好的防火性,从而使得该橡塑复合棚被在实际使用时内外都具有良好的阻燃性,实用性更强。
3、本发明中,在聚四氟乙烯抗老化层中加入多孔碳酸钙,还显著提高了聚四氟乙烯抗老化层的透气性,而中间保温层和防火硅纤维贴面层也具有良好的透气性,从而使得该橡塑复合棚被具有良好的透气性,使用性能更好。
4、本发明中,以聚四氟乙烯为基体,与阴离子氟碳表面活性剂、三异硬脂酰基钛酸异丙酯、多孔碳酸钙混合后熔融挤出形成的抗老化层还具有良好的防水性,在与中间保温层热压复合后,在中间保温层上面形成一层0.2mm厚的防水透气膜,良好的防水性使得该橡塑复合棚被在雨天等天气使用时能有效防水水滴渗入,从而有效避免了橡塑复合棚被在使用过程中由于水滴渗入而保温性能变差的问题。
5、本发明中,多孔碳酸钙的粒径为200-300nm,单独加入聚四氟乙烯基体中容易出现多孔碳酸钙聚集而在聚四氟乙烯基体中分散不均匀,加入阴离子氟碳表面活性剂与三异硬脂酰基钛酸异丙酯,二者协同配伍,使得多孔碳酸钙在聚四氟乙烯基体中分散均匀,从而进一步提高了聚四氟乙烯抗老化层的透气性。
具体实施方式
下面将结合本发明实施例,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都涉及本发明保护的范围。
下述实施例中,多孔碳酸钙的制备方法为:将11.1g氯化钙溶解在200mL泊洛沙姆水溶液中,加入10.6g碳酸钠,溶解后在65℃下反应9h,将所得产物离心洗涤干燥后的得到粒径为200-300nm的多孔碳酸钙;泊洛沙姆水溶液的质量浓度为5%,泊洛沙姆的型号为F127;发泡剂为发泡剂DAB,活性剂为氧化锌,促进剂为N-环己基-2-苯并噻唑次磺酰胺,硫化剂为硫磺,防老剂为防老剂D;
实施例1
一种环保阻燃型橡塑复合棚被,包括由上至下依次设置的聚四氟乙烯抗老化层、中间保温层和防火硅纤维贴面层,聚四氟乙烯抗老化层的厚度为0.2mm,中间层的厚度为1-5cm,防火硅纤维贴面层的厚度为0.2mm;
聚四氟乙烯抗老化层包括以下重量份的组分:聚四氟乙烯60份,磺酸基阴离子氟碳表面活性剂4份,三异硬脂酰基钛酸异丙酯1份,多孔碳酸钙13份;
中间保温层包括以下重量份的组分:丁腈橡胶15份,聚氯乙烯树脂3份,发泡剂4份,乙烯-醋酸乙烯酯共聚物3份,滑石粉20份,氯化石蜡油13份,环氧豆油1份,防护蜡2份,炭黑3份,活性剂0.2份,硬脂酸0.1份,阻燃剂10份,防老剂0.1份,促进剂1份,硫化剂0.1份;
防火硅纤维贴面层为涂覆氟硅橡胶的玻璃纤维布层,氟硅橡胶与玻璃纤维布的质量比为10:(85-90);
上述环保阻燃型橡塑复合棚被的制备方法,包括以下步骤:
(1)将聚四氟乙烯与磺酸基阴离子氟碳表面活性剂、多孔碳酸钙混合后熔融挤出,得到聚四氟乙烯抗老化层;
(2)将丁腈橡胶、聚氯乙烯树脂、发泡剂、阻燃剂、滑石粉、炭黑、氯化石蜡油、环氧豆油、乙烯-醋酸乙烯酯共聚物、防老剂、防护蜡、活性剂、硬脂酸投入密炼机共混,待共混温度达到165℃排料至开练机降温复练,温度降至80℃,开片继续自然冷却后存放24小时后,开炼机继续混练,加入硫化剂和促进剂,混练均匀后出条;出条后的胶条通过挤出机挤出成型,送入烘箱进行硫化发泡;得到中间保温层;
(3)在玻璃纤维布表面涂覆氟硅橡胶,得到防火硅纤维贴面层;
(4)将聚四氟乙烯抗老化层与中间保温层、防火硅纤维贴面层热压复合,得到环保阻燃型橡塑复合棚被。
实施例2
一种环保阻燃型橡塑复合棚被,包括由上至下依次设置的聚四氟乙烯抗老化层、中间保温层和防火硅纤维贴面层,聚四氟乙烯抗老化层的厚度为0.2mm,中间层的厚度为1-5cm,防火硅纤维贴面层的厚度为0.2mm;
聚四氟乙烯抗老化层包括以下重量份的组分:聚四氟乙烯80份,磷酸酯基阴离子氟碳表面活性剂5份,三异硬脂酰基钛酸异丙酯1.2份,多孔碳酸钙15份;
中间保温层包括以下重量份的组分:丁腈橡胶18份,聚氯乙烯树脂4份,发泡剂5份,乙烯-醋酸乙烯酯共聚物4份,滑石粉25份,氯化石蜡油14份,环氧豆油1.5份,防护蜡3份,炭黑4份,活性剂0.25份,硬脂酸0.2份,阻燃剂15份,防老剂0.2份,促进剂2份,硫化剂0.2份;
防火硅纤维贴面层为涂覆氟硅橡胶的玻璃纤维布层,氟硅橡胶与玻璃纤维布的质量比为(10-15):(85-90);
上述环保阻燃型橡塑复合棚被的制备方法,同实施例1。
实施例3
一种环保阻燃型橡塑复合棚被,包括由上至下依次设置的聚四氟乙烯抗老化层、中间保温层和防火硅纤维贴面层,聚四氟乙烯抗老化层的厚度为0.2mm,中间层的厚度为1-5cm,防火硅纤维贴面层的厚度为0.2mm;
聚四氟乙烯抗老化层包括以下重量份的组分:聚四氟乙烯100份,羧酸基阴离子氟碳表面活性剂7份,三异硬脂酰基钛酸异丙酯1.5份,多孔碳酸钙18份;
中间保温层包括以下重量份的组分:丁腈橡胶20份,聚氯乙烯树脂5份,发泡剂7份,乙烯-醋酸乙烯酯共聚物5份,滑石粉30份,氯化石蜡油15份,环氧豆油2份,防护蜡4份,炭黑5份,活性剂0.3份,硬脂酸0.3份,阻燃剂20份,防老剂0.3份,促进剂3份,硫化剂0.3份;
防火硅纤维贴面层为涂覆氟硅橡胶的玻璃纤维布层,氟硅橡胶与玻璃纤维布的质量比为(10-15):(85-90);
上述环保阻燃型橡塑复合棚被的制备方法,同实施例1。
对比例1
一种聚四氟乙烯抗老化层,与实施例1的区别仅在于未加入多孔碳酸钙。
对比例2
一种聚四氟乙烯抗老化层,与实施例1的区别仅在于未加入磺酸基阴离子氟碳表面活性剂。
对比例3
一种聚四氟乙烯抗老化层,与实施例1的区别仅在于未加入三异硬脂酰基钛酸异丙酯。
对比例4
一种聚四氟乙烯抗老化层,与实施例1的区别仅在于未加入磺酸基阴离子氟碳表面活性剂和三异硬脂酰基钛酸异丙酯。
对实施例1及对比例1-4得到的聚四氟乙烯抗老化层进行阻燃性测试,测试方法按照GB/T2406-1993《塑料燃烧性能试验方法氧指数法》的规定进行,测试结果见下表:
表1实施例1及对比例1-4中得到的聚四氟乙烯抗老化层的阻燃性测试结果
测试项目 | 实施例1 | 对比例1 | 对比例2 | 对比例3 | 对比例4 |
氧指数 | 28.6 | 28.1 | 26.9 | 28.4 | 26.7 |
从上表中数据可以看出,实施例1得到的聚四氟乙烯抗老化层的氧指数为28.6,具有良好的阻燃效果,通过实施例1和对比例1、2对比可以看出,氟硅表面活性剂的加入,显著提高了聚四氟乙烯抗老化层的氧指数,多孔碳酸钙的加入,进一步提高了聚四氟乙烯抗老化层的氧指数。
对实施例1及对比例1-4得到的聚四氟乙烯抗老化层进行抗老化性测试,测试方法按照GB/T 7141-2008《塑料热老化试验方法》的规定进行,在热老化试验箱内分别放置测试样品,在50℃下测试有样品的失效周期,测试结果见下表:
表2实施例1及对比例1-4中得到的聚四氟乙烯抗老化层的抗老化性测试结果
从上表中数据可以看出,实施例1得到的聚四氟乙烯抗老化层具有良好的抗老化性,通过实施例1与对比例1-4对比可以看出,多孔碳酸钙的加入,显著提高了聚四氟乙烯抗老化层的抗老化性,阴离子氟碳表面活性剂和三异硬脂酰基钛酸异丙酯协同,进一步提高了聚四氟乙烯抗老化层的抗老化性。
对实施例1-3中得到的聚四氟乙烯抗老化层进行防水性测试,测试方法按照GB/T1037-1988《塑料薄膜和片材透水蒸气性试验方法(杯式法)》试验条件:T=(38±0.6)℃,RH=(90±2)%,测试结果见下表:
表3实施例1-3中得到的聚四氟乙烯抗老化层的防水性测试结果:
测试项目 | 实施例1 | 实施例2 | 实施例3 |
水蒸气透过量g/(m<sup>2</sup>·24h) | 3.1 | 3.2 | 2.9 |
从上表中数据可以看出,实施例1-3制得的聚四氟乙烯抗老化层在透水蒸汽试验测试时,水蒸气透过量小,说明本发明的聚四氟乙烯抗老化层具有良好的防水性,从而使以该聚四氟乙烯抗老化层为上层的橡塑复合棚被在雨天等天气使用时能有效防水水滴渗入,从而有效避免了橡塑复合棚被在使用过程中由于水滴渗入而保温性能变差的问题。
对实施例1及对比例1-4中得到的聚四氟乙烯抗老化层进行透气性测试,测试时采用透气性测试仪,测试气体为氮气,测试时间为24小时,测试压力为0.2Mpa,测试结果见下表:
表4实施例1及对比例1-4的聚四氟乙烯抗老化层的透气性测试结果
测试项目 | 实施例1 | 对比例1 | 对比例2 | 对比例3 | 对比例4 |
透气量mL/m<sup>2</sup> | 2371 | 1469 | 2158 | 1803 | 1675 |
从上表中数据可以看出,实施例1的聚四氟乙烯抗老化层具有良好的透气性,通过实施例1与对比例1-4对比可以看出,多孔碳酸钙的加入,显著提高了聚四氟乙烯抗老化层的透气性,阴离子氟碳表面活性剂和三异硬脂酰基钛酸异丙酯协同,进一步提高了聚四氟乙烯抗老化层的透气性。
以上仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (8)
1.一种环保阻燃型橡塑复合棚被,其特征在于,所述复合棚被包括由上至下依次设置的聚四氟乙烯抗老化层、中间保温层和防火硅纤维贴面层,
所述聚四氟乙烯抗老化层包括以下重量份的组分:聚四氟乙烯60-100份,阴离子氟碳表面活性剂4-7份,三异硬脂酰基钛酸异丙酯1-1.5份,多孔碳酸钙13-18份。
2.根据权利要求1所述的一种环保阻燃型橡塑复合棚被,其特征在于,所述中间保温层包括以下重量份的组分:丁腈橡胶15-20份,聚氯乙烯树脂3-5份,发泡剂4-7份,乙烯-醋酸乙烯酯共聚物3-5份,滑石粉20-30份,氯化石蜡油13-15份,环氧豆油1-2份,防护蜡2-4份,炭黑3-5份,活性剂0.2-0.3份,硬脂酸0.1-0.3份,阻燃剂10-20份,防老剂0.1-0.3份,促进剂1-3份,硫化剂0.1-0.3份。
3.根据权利要求1所述的一种环保阻燃型橡塑复合棚被,其特征在于,所述防火硅纤维贴面层为涂覆氟硅橡胶的玻璃纤维布层,所述氟硅橡胶与所述玻璃纤维布的质量比为(10-15):(85-90)。
4.根据权利要求1所述的一种环保阻燃型橡塑复合棚被,其特征在于,所述聚四氟乙烯抗老化层的厚度为0.2mm,所述中间层的厚度为1-5cm,所述防火硅纤维贴面层的厚度为0.2mm。
5.根据权利要求1所述的一种环保阻燃型橡塑复合棚被,其特征在于,所述多孔碳酸钙的粒径为200-300nm。
6.根据权利要求1所述的一种环保阻燃型橡塑复合棚被,其特征在于,所述多孔碳酸钙的制备方法包括以下步骤:将氯化钙溶解在泊洛沙姆水溶液中,加入碳酸钠,溶解后在60-70℃下反应8-10h,将所得产物离心洗涤干燥后的得到多孔碳酸钙。
7.根据权利要求6所述的一种环保阻燃型橡塑复合棚被,其特征在于,所述氯化钙与所述碳酸钠的摩尔比为1:1。
8.根据权利要求1所述的一种环保阻燃型橡塑复合棚被,其特征在于,所述聚四氟乙烯抗老化层的制备方法包括以下步骤:将聚四氟乙烯与阴离子氟碳表面活性剂、多孔碳酸钙混合后熔融挤出,得到聚四氟乙烯抗老化层。
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