Overview
Polymer organic silicone putty is a hybrid material combining silicone's durability with polymer flexibility, designed for sealing and filling applications. It cures at room temperature to form a rubber-like elastomer, bridging gaps in construction joints, automotive panels, and industrial equipment. Unlike traditional putties, it maintains adhesion under thermal expansion and harsh weather conditions. Developed in the late 20th century, this material addresses limitations of acrylic or polyurethane-based fillers. Its formulation often includes silica reinforcements for improved tensile strength (typically 1.5-2.5 MPa) and elongation (200-400%). Major producers include global chemical brands like Dow, Wacker, and regional manufacturers in Asia.
Physical and Chemical Properties
The putty exhibits a paste-like consistency with viscosity ranging from 50,000-150,000 cP for easy application. It cures via moisture reaction, forming a network of Si-O-Si bonds that provide chemical stability. Key metrics include Shore A hardness 20-40, tensile strength ≥1.5 MPa, and service temperatures from -40°C to 150°C. Its low volatile organic compound (VOC) content (<50 g/L) meets environmental regulations. The material demonstrates excellent UV resistance (withstands 5,000+ hours QUV testing) and water repellency (contact angle >100°). Unlike silicone sealants, it accepts paint after curing, making it suitable for visible applications.
Main Applications
In construction, it seals expansion joints in concrete structures and curtain walls, preventing water infiltration while accommodating movement. Automotive manufacturers use it for filling panel gaps in electric vehicles, where lightweight and vibration damping are critical. Industrial applications include patching corrosion-resistant equipment in chemical plants. The marine industry employs it for hull repairs due to saltwater resistance. A niche use is in photovoltaic panel installations, where it seals mounting systems without degrading under UV exposure. Compared to epoxy putties, it offers superior flexibility for dynamic loads, making it ideal for earthquake-prone regions.
Safety and Storage
Uncured putty may contain minor amounts of acetic acid (in acetoxy-cure types) or alcohols (in neutral-cure types), requiring ventilation during application. Cured material is food-contact safe (FDA 21 CFR 175.300 compliant grades available). Storage in original containers prevents premature curing—typical shelf life is 12 months at 25°C. Disposal follows local regulations for silicone waste. Thermal degradation above 300°C releases silica fumes, necessitating proper ventilation during high-temperature processes. Personal protective equipment (nitrile gloves, safety glasses) is recommended for prolonged handling.
B2B Procurement Guide
Industrial buyers should prioritize suppliers with batch consistency testing (e.g., rheology and cure profile checks). Key specifications to request include adhesion strength (≥0.8 MPa on concrete/steel), cure speed (3-7 mm/24 hours), and color stability (ΔE <3 after 1,000 hours UV). Bulk pricing tiers start at 500 kg orders, with discounts up to 25%. Custom formulations (e.g., fire-retardant grades with UL94 V-0 rating) may require MOQs of 1-2 tons. Logistics considerations include avoiding freezing during transport and preferring palletized pails over drums for easier handling.
Related Manufacturers
- 主营：地面修补剂、混凝土防碳化涂料、环氧树脂砂浆、高强聚合物修补砂浆、防腐砂浆、不发火混凝土、混凝土钢筋阻锈剂
- 主营：高强无收缩灌浆料、UHPC 超高性能混凝土、高延性混凝土、地聚合物注浆料、高强聚合物砂浆、水下抗分散灌浆料、预应力管道压浆料、环氧树脂砂浆、快速修补砂浆、透水混凝土增强剂、透水混凝土胶结剂、透水盲道砂浆、环氧树脂灌缝胶、粘钢胶、植筋胶、自流平水泥、不发火砂浆、伸缩缝修补料
- 主营：浸渍剂、防护剂、丙乳砂浆、有机硅、防水涂料、抗碱封闭涂料、抗碱封闭底漆、环氧树脂砂浆、防水剂防漏涂料
- 主营：灌浆料、压浆料、速凝剂、超薄修补腻子、环氧砂浆、透水砼增强剂、抗裂砂浆、修补砂浆、支座灌浆料、道钉锚固剂、丙乳砂浆、防水砂浆
- 主营：环氧树脂砂浆、快速抢修料、环氧砂浆、地聚合物注浆料、硅烷浸渍剂、聚合物防水砂浆、环氧修补砂浆、灌浆料、快速修补料、混凝土色差修复剂、混凝土增强剂、除锈剂
- 主营：水泥基渗透结晶防水涂料、路面修补料、环氧树脂砂浆、聚合物水泥防水砂浆、高强聚合物砂浆、地聚合物注浆料、聚合物水泥注浆料、高强无收缩灌浆料、不发火砂浆、高聚物快速结构修补料、丙乳砂浆、氯丁胶乳砂浆、UHPC超高性能混凝土、重力砂浆、环氧树脂灌浆料、灌缝胶、透水混凝土增强剂、混凝土回弹增强剂
- 主营：ppc防水、保护层、玻纤瓦、聚合物、沙皮瓦、水泥浆、保护膜、网带pet、隔离层、外墙砖、封檐板、防水板、乙烯pvc、乳胶漆、隔热漆、雨水管、雨水槽、地坪漆、落水管、沥青sbs、排水管、贺德克、落水槽、油毡瓦、钢结构
- 主营：水泥浆、网带pet、涂料sbs、聚合物、建筑sbs、贴方向、sbs卷材、层施工、产设备、防水剂、土工布、油毡瓦、焊接机、彩钢瓦、雨水斗、k11防水、琉璃瓦、hst卷材、阳光房、树脂瓦、雨水管、120防水、聚氨酯、镀锌板、贴装置
- 主营：防水sbs、玻纤瓦、tpz防水、聚合物粘结剂、瓦油毡、bac自粘、卷材sam、eva防水、彩钢瓦、卷材tpo、k11防水、高分子、pvc防水、沥青瓦、eva自粘、pet自粘、hdpe防水、fyt1防水、tpob防水、聚氯乙烯、卷材包工、水泥路面、彩油毡瓦、水卷卷材、聚酯复合、反应粘结
- 主营：防水sbs、玻纤瓦、沥青sbs、有机硅改性聚合物腻子、沥青胶、prm防水、油毡瓦、eva防水、k11防水、pvc防水、沥青瓦、屋面板、eva高铁、涂料k11、卷材sbs、聚乙烯、hdpe防水、fyt1防水、卷材1卷、pvcs防水、hut1防水、pe高分子、pe膜防水、聚氯乙烯、县sbs防水、卷材先做
- 主营：防水sbs、沥青sbs、油毡瓦、有机硅改性聚合物腻子、eva防水、k11防水、pvc防水、沥青瓦、度低温、pvc卷材、cps反应、卷材sbs、tsc防水、hdpe防水、fyt1防水、3sbs防水、卷材pe膜、pe高分子、聚氯乙烯、聚酯复合、防水涂料、木屋瓦片、防水屋面、面sbs防水、轻钢别墅、自沾卷材
- 主营：油毡瓦、沥青瓦、玻纤瓦、有机硅改性聚合物腻子、sbs防水卷材、自粘防水卷材、高分子防水卷材、pvc防水卷材、三元乙丙橡胶防水卷材、高聚物改性沥青防水卷材、聚氯乙烯防水卷材、非沥青基防水卷材、预铺防水卷材、湿铺防水卷材、聚乙烯丙纶防水卷材、隧道专用防水卷材、耐根穿刺防水卷材、自粘橡胶防水卷材、防水涂料
- 主营：sbs卷材、卷材app、油毡瓦、聚合物水泥防水涂料、卷材eva、号沥青、贴缝带、外墙面、pvc自黏、聚氨酯、pvc防水、10#沥青、防水sbs、彩钢顶、玻纤瓦、抗裂贴、沥青瓦、沙皮瓦、eva防水、tss防水、hdpe防水、卷材p类、卷材l类、isbs防水、卷材sbpe、pe膜防水
- 主营：甘氨酸、阻燃剂、胶黏剂、有机硅、蒽甲酸、退除剂、中性红、3282-24-4、肉桂醛、退镍液、乙氧基、2768-02-7、阻燃毯、7377-08-4、4865-84-3、草酸铜、抛光盐、5471-63-6、戊二酸、插入管、丙二胺、碳化硼、蓝钨粉、硫酸镝、2799-16-8、二氨基