复合井盖作为检查井盖的一种，用聚合物作基体材料，加入增强材料、填充料等，通过一定的工艺复合而成的检查井盖。新的国标提升了井盖的荷载要求，与国际通行的EN124标准接轨。该标准从2010年2月1日起实施。采用不饱和聚脂树脂为基体的纤维增强热固性复合材料，又称为团块模塑料(DMC)，用压制成型技术制成，是一种新型的环保型盖板。复合井盖采用高温高压一次模压成型技术，聚合度高、密度大，有良好的抗冲击和拉伸强度，具有耐磨、耐腐蚀、不生锈、无污染、免维护等优点。 复合井盖内部使用网状钢筋增强，关键受力部分特殊加强，在发生不可避免的外力冲击时，可迅速分散压力保证人车安全。 不含金属，石塑井盖和混凝土井盖钢筋骨架还不到井盖总重的1/10。没有多大的偷盗价值。而且由于井盖强度极高，要从井盖内取出这一小点钢筋是极难的。 性能特点 1、强度高：具有很高的抗压、抗弯、抗冲击的强度，有韧性。长期使用后该产品不会出现井盖被压碎及损坏现象，能彻底杜绝“城市黑洞”事故的发生。2、外观美：表面花纹设计精美，颜色亮丽可调，美化城市环境。3、使用方便，重量轻：产品重量仅为铸铁的三分之一左右，便于运输、安装、抢修，大大减轻了劳动强度。4、无回收价值，自然防盗；根据客户需要并设有锁定结构，实现井内财物防盗。5、耐候性强：井盖通过科学的配方、先进的工艺、完善的技术设备使该产品能在－50℃～+300℃环境中正常使用。6、耐酸碱、耐腐蚀、耐磨、耐车辆碾压，使用寿命长。 前景 随着城乡建设的迅猛发展，新建小区及道路的配套设施――井盖的需求量急剧增多，而传统铸铁井盖成本高，被盗现象严重，行人受伤、车辆受损时有发生，一直是困扰各建设部门的难题。复合材料井盖主要采用不饱和树脂为主要化工原料，将多种材料复合改性而成，成型后不但强度高，外表美观，而且电绝缘性能好，防水、耐老化、耐酸碱、强度高、抗冲击、耐磨、不怕日晒雨淋、抗静电、防盗等特点，是铸铁井盖理想的替代产品。
Shandong Baogai New Material Technology Co., Ltd. (formerly Shandong Baogai Building Materials Co., Ltd.) was established in 2009 with a registered capital of 80 million yuan. It is a scientific and technological innovation enterprise integrating R&D and production. The company is positioned to produce medium and high-end manhole cover series. Products, specifications, variety, high output, cost-effective.
The national patent product produced by our company--polymer molded manhole cover is divided into two series of BMC and SMC, with more than 400 specifications and an annual production capacity of over one million pieces. The product is made of polyester resin and various polymer materials. It is molded by high temperature and high pressure. It mainly produces manhole cover, composite manhole cover, gutter cover and ditch cover. It has high strength, high hardness, light weight, anti-corrosion and anti-aging. , beautiful anti-theft and other advantages. Tested by the national authorities, all indicators have reached national standards. The products are sold all over the country and exported to Russia, India, the United States, Kuwait, Taiwan and other countries and regions. It is the ideal substitute for cast iron manhole covers.
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