<var id="i3l0z"><source id="i3l0z"></source></var><abbr id="i3l0z"><menu id="i3l0z"><object id="i3l0z"></object></menu></abbr>
    • <abbr id="i3l0z"></abbr>

        国产精品综合在线免费看,日韩精品国内国产一区二,久久久久久亚洲精品成人,亚洲精品码中文在线观看,成人午夜无人区一区二区,亚洲成人一区二区av,日韩一区二区三区高清视频,成熟熟女国产精品一区二区
        + WeChat number:語言切換+微信彈窗

        Your location: Home -> Information dynamic -> Industry News

        Recommended Products

        How to use a plastic toolbox made of PP material

        Source:m.6090067.cn      Release date: 2025-09-22
        The plastic toolbox made of PP material has many advantages, but also some limitations. The following is a specific introduction: 1. Advantages Lightweight and portable: The density of PP material is only 0.90-0.91g/cm 3, which is lighter than water. PP material toolboxes of the same volume are lighter in weight than metal or other plastic toolboxes, making them easy to carry and move, an
              The plastic toolbox made of PP material has many advantages, but also some limitations. The following is a specific introduction:
        1. Advantages
               Lightweight and portable: The density of PP material is only 0.90-0.91g/cm 3, which is lighter than water. PP material toolboxes of the same volume are lighter in weight than metal or other plastic toolboxes, making them easy to carry and move, and reducing the burden on users.
               Good heat resistance: PP plastic products can work for a long time at 100 ℃, and will not deform even when heated to 150 ℃ without external force. Compared with other general plastics, it has better heat resistance and can adapt to certain high temperature environments.
               Good mechanical properties: PP has higher strength and elasticity than HDPE, and has good tensile strength and rigidity. It has excellent formability and is not easily damaged even when bent. It is known as the "hundred fold adhesive" and can withstand certain external forces and pressures.
               Strong chemical stability: PP is inert to most acids, bases, salts, and oxidants, and is stable in concentrated phosphoric acid, hydrochloric acid, 40% sulfuric acid, and their salt solutions at 100 ℃. Only a few strong oxidants such as fuming sulfuric acid can change it, and it has good corrosion resistance.
               Excellent insulation performance: PP hardly absorbs water, its insulation performance is not affected by temperature, and it has good high-frequency insulation, suitable for storing electrical tools or using in electrical work environments.
               Beautiful and diverse appearance: PP material has strong plasticity and can be made into various shapes and colors of toolboxes through injection molding and other processes. The appearance is beautiful and generous, which can meet the personalized needs of different users.
        2. Disadvantages
               Poor low-temperature impact performance: PP has poor impact strength in low-temperature environments, is prone to becoming brittle, and may rupture when subjected to external impact.
               Weak UV resistance: PP has a low resistance to UV radiation and is prone to aging and degradation when exposed to sunlight for a long time, resulting in decreased performance, discoloration, and brittleness.
               Easy to dent: Due to the elasticity of PP, plastic products produced are prone to dent when subjected to high pressure or sharp objects.
        主站蜘蛛池模板: 日韩中文字幕亚洲精品| 久久99九九精品久久久久蜜桃| 婷婷色爱区综合五月激情韩国| 亚洲AV成人一区国产精品| 激情五月日韩中文字幕| 国产一区二区精品尤物| 强被迫伦姧高潮无码bd电影| 国产一区二区三区啪| 亚洲AV日韩AV综合在线观看| 国产亚洲精品aaaa片app| 农村妇女野外一区二区视频 | 白嫩少妇激情无码| 91无码人妻精品一区二区蜜桃| 国内精品久久久久影院薰衣草| 久9热免费精品视频在线观看| 东方四虎在线观看av| 西西午夜无码大胆啪啪国模| 极品人妻少妇一区二区三区| 色综合天天综合网天天看片| 97午夜理论电影影院| 青青草国产线观看| 69精品丰满人妻无码视频a片| 国模av在线| 亚洲 自拍 另类 制服在线| 毛片久久网站小视频| 精品国产综合成人亚洲区| 九九热在线视频免费播放| 国产成人亚洲日韩欧美| 日韩免费视频一一二区| 国产精品亚洲А∨天堂免下载| 国产亚洲欧美精品久久久| 宝贝几天没c你了好爽菜老板| 大地资源中文在线观看西瓜| 亚洲精品乱码久久久久久中文字幕| 91亚洲精品一区二区三区| 40岁大乳的熟妇在线观看| 成人免费精品网站在线观看影片 | 无码日韩精品一区二区三区免费| 亚洲爆乳WWW无码专区| 国产大陆av一区二区三区| 国产高清毛片|