CN106519531B - 水上光伏浮箱 - Google Patents

水上光伏浮箱 Download PDF

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CN106519531B
CN106519531B CN201611020386.8A CN201611020386A CN106519531B CN 106519531 B CN106519531 B CN 106519531B CN 201611020386 A CN201611020386 A CN 201611020386A CN 106519531 B CN106519531 B CN 106519531B
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蒋晓璐
徐康博
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Zhejiang xinzekang New Material Technology Co.,Ltd.
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Abstract

本发明公开的水上光伏浮箱，包括暴露在环境中的外保护层，该外保护层所含原料的配方为含氟高聚物20‑100重量份、改性聚丙烯酸类树脂0‑80重量份，填充剂0‑20重量份；该水上光伏浮箱还包括起支撑作用的骨架层、以及用于粘结外保护层和骨架层的中间层。本发明水上光伏浮箱采用三层共挤结构，且原料以含氟材料为主，使得水上光伏浮箱具有低紫外线透过率，降低光对水上光伏浮箱的老化降解，延长水上光伏浮箱的使用寿命，且本发明水上光伏浮箱外保护层低有害物质析出率，环保且可再回收利用。

Description

水上光伏浮箱
技术领域
本发明涉及水上光伏设备技术领域，具体涉及水上光伏浮箱。
背景技术
随着土地利用形势的日益紧张，很多国家和地区充分开发水上资源，大力推广水上光伏发电技术，将水上光伏电站作为一项新型的发电项目。
根据光伏支架形式，在水深大于3米时，一般采用漂浮电站，而水上漂浮式电站的特点在于：(1)开发效益大：不占用农业和采矿的土地，提高了土地的综合利用率；(2)保护水体：减少水面蒸发量及抑制藻类生长；(3)运维方便，灰尘少，避免杂草阴影遮挡；(4)节能环保：浮箱材料100％可回收利用，不污染水体；(5)发电量优势：水面对光伏组件起到降温、镜面反射等的作用，发电量明显高于地面电站。
水上光伏浮箱作为漂浮电站的主要载体，其原材料为高密度聚乙烯(外文名称为High Density Polyethylene，简称为“HDPE”)，由于其具有密度低，防酸碱性优良、易于加工等特点，因此，纯HDPE作为目前水上光伏浮箱的原材料。但由于HDPE的光老化和热氧老化性能，以纯HDPE为原材料的水上光伏浮箱容易老化降解，使用寿命短，维修更换成本大。
发明内容
本发明的目的在于克服现有技术中存在的上述缺点，提供一种含氟材料的水上光伏浮箱，该水上光伏浮箱具有高耐候性，使用寿命长。
为了实现上述目的，本发明采用的技术方案如下：
水上光伏浮箱，包括暴露在环境中的外保护层，该外保护层的原料包括含氟高聚物和改性聚丙烯酸类树脂，含氟高聚物为乙烯-四氟乙烯共聚物、可溶性聚四氟乙烯、聚偏氟乙烯、聚四氟乙烯、乙烯-三氟氯乙烯共聚物、聚三氟氯乙烯、四氟乙烯-六氟丙烯-偏氟乙烯共聚物中的一种或几种的共混物。
进一步地，外保护层中还包括填充剂，该填充剂为钛白粉、硫酸钡、纳米碳酸钙、二氧化硅中的一种或几种。
进一步地，外保护层所含原料的配方为含氟高聚物20-100重量份、改性聚丙烯酸类树脂0-80重量份，填充剂0-20重量份。
进一步地，外保护层内侧设有起支撑作用的骨架层，该骨架层的原料包括高密度聚乙烯和功能性助剂，该功能性助剂为抗氧剂、耐寒剂、抗静电剂、增韧剂、紫外吸收剂、光稳定剂和热稳定剂中的一种或多种。
进一步地，骨架层所含原料的配方为高密度聚乙烯100重量份、功能性助剂：抗氧剂0-5重量份、耐寒剂0-3重量份、抗静电剂0-3重量份、增韧剂0-10重量份、紫外吸收剂0-5重量份、光稳定剂0-3重量份、热稳定剂0-3重量份。
进一步地，外保护层和骨架层之间设有起粘结作用的中间层，该中间层的原料包括含氟高聚物和改性聚甲基丙烯酸类树脂，其中，含氟高聚物为乙烯-四氟乙烯共聚物、可溶性聚四氟乙烯、聚偏氟乙烯、聚四氟乙烯、乙烯-三氟氯乙烯共聚物、聚三氟氯乙烯、四氟乙烯-六氟丙烯-偏氟乙烯共聚物中的一种或几种的共混物。
进一步地，中间层中还包括高密度聚乙烯和功能性助剂，该功能性助剂为抗氧剂、耐寒剂、抗静电剂、增韧剂、紫外吸收剂、光稳定剂和热稳定剂中的一种或多种。
进一步地，中间层所含原料的配方为聚高聚物和改性聚丙烯酸类树脂的共混物20-80重量份、高密度聚乙烯10-90重量份、功能性助剂：抗氧剂0-5重量份、耐寒剂0-3重量份、抗静电剂0-3重量份、增韧剂0-10重量份、紫外吸收剂0.5-3重量份、光稳定剂0-3重量份、热稳定剂0-3重量份。
优选的，改性聚丙烯酸类树脂是指增韧改性、增强改性或者增韧增强兼具的改性聚甲基丙烯酸甲酯。
本发明的有益效果是：与传统以纯高密度聚乙烯为原料的浮箱相比，本发明水上光伏浮箱采用三层共挤结构，以含氟高聚物为主要原材料，使得水上光伏浮箱具有高反射率，即可降低浮箱表面温度，提高组件发电效率；还具有低紫外线透过率，降低光对水上光伏浮箱的老化降解，延长水上光伏浮箱的使用寿命。本发明水上光伏浮箱外保护层低有害物质析出率，环保且可再回收利用。
附图说明
为了更清楚地说明本发明中的技术方案，下面对实施例描述中所使用的附图及附图标记做简单介绍。
图1为本发明实施例的结构示意图；
图2为对角拉力试验示意图；
图3对边拉力试验示意图。
附图标记说明：1-外保护层、2-中间层、3-骨架层。
具体实施方式
为了进一步理解本发明，下面结合本发明实施例中的附图，对本发明实施例中的方案进行清楚、完整地描述。
参见图1所示，本发明实施例1至5的水上光伏浮箱，均包括暴露在环境中的外保护层1，外保护层1内侧设有起支撑作用的骨架层3，外保护层1和骨架层3之间设有起粘结作用的中间层2。
在实施例1至5的水上光伏浮箱中，外保护层1、中间层2和骨架层3中所含原料如表1所示。
其中：增强改性聚甲基丙烯酸甲酯是指在聚甲基丙烯酸甲酯中添加纤维增强剂、玻璃增强剂、纳米材料增强剂或碳纤维增强剂，以提高聚甲基丙烯酸甲酯的强度；增韧改性聚甲基丙烯酸甲酯是指在聚甲基丙烯酸甲酯中添加橡胶类增韧剂或热塑性弹性体增韧剂，以提高聚甲基丙烯酸甲酯的韧性；增强增韧改性聚甲基丙烯酸甲酯是同时添加了调高强度的增强剂和提高韧性的增韧剂的改性聚甲基丙烯酸甲酯。
表1实施例1至5水上光伏浮箱各层原料配方(重量份)：
以表1的各原料配比成型的实施例1至5的水上光伏浮箱，分别进行以下技术参数的测试。
按国家标准《紧固件横向振动试验方法》GB/T 1043.1检测简支梁冲击强度(单位：KJ/㎡)；按国家标准GB/T 1040检测拉伸强度(单位：MPa)和断裂伸长率(单位：％)；按《乙烯塑料的环境应力破裂的标准试验方法》国外标准ASTM D-1693检测耐环境开裂应力(单位：h)；按防火等级UL-94检测外保护层阻燃等级；按《塑料模塑件尺寸公差》国家标准GB/T14486-2008检测水上光伏浮箱的厚度(单位：mm)；以2kg铁球，2m高自由的测试标准检测落锤冲击水上光伏浮箱是否开裂；以整个水上光伏浮箱浸没在水中24h的测试标准进行防渗漏试验，检测水上光伏浮箱是否发生渗漏；以《光伏组件的安全鉴定》标准IEC 61730为测试标准，针对水上光伏的特点，将IEC 61730标准中测试的条件-40℃～85℃，85％RH调整为-40℃～65℃，100％RH，结果以机械性能的保持率表示(要求保持率≧60％)，检测紫外加速老化性能、高低温循环性能(试验箱型号：TC200)性能、湿—热加速老化(试验箱型号：DH100)性能、湿—冻加速老化(试验机型号：HS10)性能；以50g/L+5g/L的NaCl溶液，PH控制在6.5-7.2，温度35±2℃的温度下连续对水上光伏浮箱喷雾，测试时间56天的测试标准，进行中性盐雾测试；以耐化学性(95％酒精、2％NaOH、5％HCL溶液)，测试时间45天的测试标准，进行耐酸碱测试；按《食品中脂肪的测定》国家标准GB/T5009.6和《国家玩具安全技术规范》国家标准GB6675-2014检测有害物质析出性能；以-40℃调节2h，2kg铁球，2m高自由为测试标准，进行低温落锤实验，得出如表2所示的技术性能参数表。
表2实施例1至5水上光伏浮箱技术性能测试结果：
对实施例1至5的水上光伏浮箱分别进行的对角拉力试验和对边拉力试验，具体测试方法如图2和图3所示。
对角拉力试验：按图2方式用的吊环固定试样件耳部孔，沿P方向施力，测试速度为50mm/min，加大拉力P直至产品破坏，记下最大值F，见表2所示对角拉力的数据。
对边拉力试验：按图3方式用吊环固定试样件耳部孔，沿P方向施力，测试速度为50mm/min，加大拉力P直至产品破坏，记下最大值F，见表2所示对边拉力的数据。
表2中，对比例*是某公司生产的以纯高密度聚乙烯为原材料的单层结构水上光伏浮箱的测试结果。
以上各个实施例均通过吹塑工艺成型。比较实施例1至5与对比例*的各项测试结果，说明采用三层共挤结构，高耐候的含氟材料的本发明水上光伏浮箱的拉伸强度、耐环境开裂应力、紫外加速老化、耐候性等性能更优，使得本发明水上光伏浮箱的使用寿命更长。

Claims (5)

1.水上光伏浮箱，其特征在于：包括暴露在环境中的外保护层，所述外保护层的原料包括含氟高聚物和改性聚丙烯酸类树脂，所述含氟高聚物为乙烯-四氟乙烯共聚物、可溶性聚四氟乙烯、聚偏氟乙烯、聚四氟乙烯、乙烯-三氟氯乙烯共聚物、聚三氟氯乙烯、四氟乙烯-六氟丙烯-偏氟乙烯共聚物中的一种或几种的共混物，所述外保护层中还包括填充剂，所述填充剂为钛白粉、硫酸钡、纳米碳酸钙、二氧化硅中的一种或几种，所述外保护层所含原料的配方为含氟高聚物20-100重量份、改性聚丙烯酸类树脂10-80重量份，填充剂10-20重量份；
所述外保护层内侧设有起支撑作用的骨架层，所述骨架层的原料包括高密度聚乙烯和功能性助剂，所述功能性助剂为抗氧剂、耐寒剂、抗静电剂、增韧剂、紫外吸收剂、光稳定剂和热稳定剂中的一种或多种；
所述外保护层和骨架层之间设有起粘结作用的中间层，所述中间层的原料包括含氟高聚物和改性聚丙烯酸类树脂、高密度聚乙烯，所述含氟高聚物为乙烯-四氟乙烯共聚物、可溶性聚四氟乙烯、聚偏氟乙烯、聚四氟乙烯、乙烯-三氟氯乙烯共聚物、聚三氟氯乙烯、四氟乙烯-六氟丙烯-偏氟乙烯共聚物中的一种或几种的共混物。
2.根据权利要求1所述的水上光伏浮箱，其特征在于：所述骨架层所含原料的配方为高密度聚乙烯100重量份，功能性助剂：抗氧剂3-5重量份、耐寒剂0-3重量份、抗静电剂0-3重量份、增韧剂0-10重量份、紫外吸收剂0.5-5重量份、光稳定剂0.3-3重量份、热稳定剂0-3重量份。
3.根据权利要求1所述的水上光伏浮箱，其特征在于：所述中间层中还包括功能性助剂，所述功能性助剂为抗氧剂、耐寒剂、抗静电剂、增韧剂、紫外吸收剂、光稳定剂和热稳定剂中的一种或多种。
4.根据权利要求3所述的水上光伏浮箱，其特征在于：所述中间层所含原料的配方为含氟高聚物和改性聚丙烯酸类树脂的共混物20-80重量份、高密度聚乙烯10-90重量份、功能性助剂：抗氧剂0-5重量份、耐寒剂0-3重量份、抗静电剂0-3重量份、增韧剂0-10重量份、紫外吸收剂0.5-3重量份、光稳定剂0-3重量份、热稳定剂0-3重量份。
5.根据权利要求1所述的水上光伏浮箱，其特征在于：所述改性聚丙烯酸类树脂是指增韧改性、增强改性或者增韧增强兼具的改性聚甲基丙烯酸甲酯。
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