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I. Synthetic sleeper introduction
作为常规的轨道交通用轨枕，木材和混凝土轨枕都有一定的局限性，故而，新型的轨枕随之被开发应用。我们新型的复合材料合成轨枕是由连续玻璃纤维增强改性氨基甲酸乙酯树脂发泡而成，合成轨枕低碳环保、刚度低、寿命长、性价比高，是木材、混凝土轨枕的zui佳替代品，可广泛应用于城市轨道交通、普通铁路、重载铁路、高铁的正线、车辆段、道岔、桥梁等路段。
As conventional rail sleepers, timber and concrete sleepers have certain limitations. Therefore, synthetic sleepers have been developed and applied. Our new synthetic sleeper composite is made of continuous glass fiber-reinforced polyurethane foam, a new type of synthetic sleeper product. The production process, the raw material after the automated ingredients, automated dipped, stable pressure curing, the product obtained excellent comprehensive performance. Our synthetic sleeper features low carbon and environmental protection, low rigidity, long service life, and high-cost performance. It is the best substitute for wood and concrete sleepers. It can be widely used in urban rail transit, ordinary railways, heavy haul railways, high-speed rail lines, depots, turnouts, bridges, and other sections.
相比于传统的聚氨酯合成轨枕，我们通过配方优化、技术革新等，实现厚度260mm以下一次成型，无需多层拼接复合，避免了多层复合粘接带来的粘接过程环境污染和粘接成品开裂风险，解决了传统合成轨枕抗拔力偏低等问题，提高了产品性能和生产效率。
Compared to traditional polyurethane synthetic sleepers, we have achieved a one-step molding process with a thickness of less than 260mm through formula optimization and technological innovation. This eliminates the need for multi-layer composite bonding, thus avoiding environmental pollution and the risk of cracking in the bonding process associated with multi-layer composites. This addresses low pull-out resistance in traditional synthetic sleepers, improving product performance and production efficiency.
II. Characteristics of synthetic sleeper
我们的合成轨枕具有以下性能特点：
The new composite sleeper has the following performance characteristics:
（1）大厚度成型
(1) Large thickness molding
我们的新型合成轨枕采用创新工艺，可实现一次成型，zui大一次成型厚度300mm，产品无粘接或少粘接，可靠性、安全性、稳定性更高。
Our new synthetic sleeper utilizes an innovative manufacturing process, enabling a single-step formation with a maximum one-time formation thickness of 300mm. The product exhibits minimal or no bonding, thereby ensuring increased reliability, safety, and stability.
（2）轻质高强
(2) Lightweight high strength
质量轻（根据线路轴重等工况具体设计，密度在0.7-10g/cm3之间），密度约为混凝土的1/3，现场运输安装方便快捷，缩短铺轨周期，降低生产劳动强度。
With a lightweight design tailored to specific railway conditions, the density of our sleepers ranges between 0.7-1.0g/cm³, approximately one-third that of concrete. This facilitates convenient and swift on-site transportation and installation, reducing track laying times and lowering labor intensity.
（3）易加工可修正
(3) Easy machinability and correctability
轨枕能进行与木材同样的加工；可实现侧面及上下面开槽、钻孔、调高。在施工失误或破损后，可进行现场快速修补。
Sleepers can be processed similarly to wood, allowing for slotting, drilling, and height adjustment on the side, top, and bottom surfaces. Quick on-site repairs can be carried out in cases of construction errors or damage.
（4）安全可靠
(4) Safety and reliability
合成轨枕具有较高的道钉抗拔力，扣件系统连接长期使用更加稳固、可靠。
Synthetic sleepers exhibit high resistance to rail spike pullout forces, ensuring a secure and reliable connection through the fastening system for long-term use.
（5）绝缘防水
(5) Insulation and waterproofing
轨枕绝缘性好，且材料吸水率极低，可有效防止生锈，以及防止杂散电流和水侵蚀。
Sleepers have good insulation and low water absorption, preventing rusting, stray currents, and water erosion.
（6）使用寿命长
(6) Long service life
轨枕耐候性能好，疲劳性能好，寿命是木枕的5倍以上。服役期实现免维护，综合成本低。
Sleepers have excellent weather resistance and fatigue properties, boasting a service life over five times that of wooden sleepers. They require minimal maintenance during their service life, resulting in a low overall cost of ownership.
III. Technical indicators
A．普通合成轨枕主要性能
A．Main Parameters of Common Synthetic Sleepers
（参照《JIS E1203-2007》，主要用于在地面铺设的轨道线路以及道岔）
(Referencing JIS E1203-2007, applicable to track lines laid on the ground such as main lines and turnouts)
项目 Items | 技术指标 Technical specifications | |
表观密度 Shear strength | 0.74±0.10 g/cm3 | |
剪切强度 Shear strength in adhesion | ≥7 MPa | |
弯曲强度 Bending strength | ≥70 MPa | |
弯曲弹性模量 Young’s modulus of bending elasticy | ≥6 GPa | |
竖向压缩强度 Vertical compression strength | ≥40 MPa | |
击穿电压 Breakdown voltage | ≥20 kV | |
表面电阻率 Surface resistivity | ≥1×1010 Ω | |
吸水量 Water absorption | ≤10 mg／cm2 | |
阻燃性 Flame retardant | HB级 HB Level | |
成品抗弯曲载荷 Finished anti-bending load | ≥170 kN | |
勾头道钉抗拔强度 Track spike pull strength | ≥15 kN | |
螺纹道钉抗拔强度 Screw spike pull strength | ≥40 kN | |
疲劳性能 Fatigue properties | 105次无异常 105 times no abnormalities | |
表观密度 Apparent density | 0.74±0.10 g/cm3 | |
耐老化性能 Anti-aging properties （荧光照射1000h） (Fluorescence irradiation 1,000h) | 弯曲强度 Bending strength | ≥50 MPa |
弯曲弹性模量 Young’s modulus of bending elasticity | ≥4.2 GPa | |
竖向压缩强度 Vertical compression strength | ≥30 MPa | |
粘接剪切强度 Shear strength in adhesion | ≥5 MPa 且为母材破坏 ≥5 MPa and breakage of material | |
B．高强度合成轨枕主要性能
B．Main Performance Characteristics of High-strength Synthetic
（主要用于轴重20吨以上重载线路和在桥梁铺设的线路）
(Applicable to rail tracks with loads exceeding 20 tons lines laid on bridges)
项目 Items | 技术指标 Technical specifications | |
表观密度 Shear strength | 0.95±0.05 g/cm3 | |
剪切强度 Shear strength in adhesion | ≥12 MPa | |
弯曲强度 Bending strength | ≥140 MPa | |
弯曲弹性模量 Young’s modulus of bending elasticity | ≥9 GPa | |
竖向压缩强度 Vertical compression strength | ≥80 MPa | |
击穿电压 Breakdown voltage | ≥20 kV | |
表面电阻率 Surface resistivity | ≥1×1010 Ω | |
吸水量 Water absorption | ≤6 mg／cm2 | |
阻燃性 Flame retardant | HB级 | |
成品抗弯曲载荷（） Finished anti-bending load () | ≥300 kN | |
勾头道钉抗拔强度 Track spike pull strength | ≥15 kN | |
螺纹道钉抗拔强度 Screw spikes pull strength | ≥60 kN | |
疲劳性能 Fatigue properties | 2×106次无异常 2×106 times no abnormalities | |
耐老化性能 Anti-aging properties （荧光照射1000h） (Fluorescence irradiation 1,000h) | 弯曲强度 Bending strength | ≥110 MPa |
弯曲弹性模量 Young’s modulus of bending elasticity | ≥7 GPa | |
竖向压缩强度 Vertical compression strength | ≥60 MPa | |
粘接剪切强度 Shear strength in adhesion | ≥9 MPa 且为母材破坏 ≥9 MPa and breakage of material | |
IV. Synthetic sleeper specifications
（1）轨枕端面规格
(1) Size of sleepers
我们可根据客户要求进行生产，加工宽度为400mm以下、厚度≥100mm及任意长度规格型号的合成轨枕。多种规格的轨枕可以满足地铁线路、高速铁路、明桥面、重载线路等不同工况的使用要求。
Our sleeper can be produced according to customer requirements, with a processing width of 400mm or less, a thickness of ≥ 100mm, and any length of the standard specifications of the sleeper. A variety of sleepers to meet the subway lines, high-speed railway, the bridge's surface, heavy lines, and other conditions of use requirements.
（2）轨枕加工形式
(2) Machining works
我们的合成轨枕可根据现场施工情况，提供工程测量、规格设计、机械加工、交货安装等定制化服务。使轨枕加工更加精准、安装更加快捷。
Our sleeper can be machined into various shapes or sizes by site surveying, CAD designing, NC machining, and installation. The dangerous work will be more accurate and more convenient.
V. Matching special repair adhesive
新材的合成轨枕配套专用修补胶，可以在安装时枕木钻孔操作失误或者运营后道钉松动时使用，其强度与枕木本体接近一致。
Synthetic sleeper is equipped with special repair adhesive, which can be used when the sleeper drilling operation is wrong during installation or when the road stud is loose after operation, and its strength is close to the same as that of the sleeper body.
与常规枕木修补胶不同的是，新材专用胶采用双螺旋混合嘴自动混合，混合配比精度高，不再需要现场人工复配。
Different from the conventional sleeper repair adhesive, the special adhesive adopts double spiral mixing nozzle for automatic mixing, with high mixing and proportioning accuracy, and no longer needs on-site manual compounding.
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