行业验证制造数据 · 2026

液体硅树脂

基于 CNFX 目录中多个工厂资料的聚合洞察,液体硅树脂 在 化学制造 行业中通常会围绕 Viscosity 到 Cure Time 进行能力评估。

技术定义与核心装配

一个典型的 液体硅树脂 通常集成 Base Polymer 与 Cross-linker。CNFX 上列出的制造商通常强调 Polydimethylsiloxane (PDMS) 结构,以支持稳定的生产应用。

A low-viscosity, flowable silicone polymer that cures to form a durable, flexible, and heat-resistant solid.

技术定义

Liquid silicone resin is a synthetic polymer material composed of siloxane chains with reactive functional groups. It exists as a pourable liquid at room temperature and undergoes cross-linking (curing) through heat, moisture, or catalysts to form a solid elastomer or resin. This material is characterized by its excellent thermal stability, chemical resistance, electrical insulation properties, flexibility across a wide temperature range, and low toxicity. It is used as a coating, adhesive, encapsulant, or molding material in various industrial applications.

工作原理

Liquid silicone resin operates on the principle of addition-cure or condensation-cure polymerization. In the addition-cure system, typically involving platinum catalysts, the resin contains vinyl-functional groups that react with silicon-hydride (Si-H) cross-linkers upon heating, forming covalent bonds without producing by-products. In condensation-cure systems, reactive silanol (Si-OH) groups condense with cross-linkers, releasing small molecules like water or alcohol. The curing process transforms the low-viscosity liquid into a three-dimensional polymer network, resulting in a solid material with elastomeric or rigid properties depending on the formulation.

技术参数

Viscosity
The resistance of the uncured resin to flow, measured at a specified temperature and shear rate.cP
Cure Time
The time required for the resin to fully cross-link and achieve specified mechanical properties at a given temperature.minutes
Shore Hardness
A measure of the cured material's resistance to indentation, indicating its softness or firmness.Shore A
Tensile Strength
The maximum stress the cured material can withstand while being stretched before breaking.MPa
Elongation at Break
The percentage increase in length of the cured material at the point of rupture under tension.%
Operating Temperature Range
The temperature span within which the cured material maintains its functional properties without degradation.°C

主要材料

Polydimethylsiloxane (PDMS) Silica filler Cross-linking agent Catalyst (e.g., Platinum complex)

组件 / BOM

Base Polymer
Provides the primary siloxane backbone, determining basic properties like flexibility, thermal stability, and chemical resistance.
材料: Polydimethylsiloxane (PDMS) or modified silicone oligomers
Cross-linker
Contains reactive groups (e.g., Si-H for addition cure) that bond with the base polymer during curing to form a three-dimensional network.
材料: Organohydrosiloxane or other multifunctional silanes
Initiates and controls the curing reaction rate; inhibitors may be added to extend pot life or prevent premature curing.
材料: Platinum complex (for addition cure) or tin compound (for condensation cure)
Fillers
Enhance mechanical properties (e.g., strength, hardness), reduce cost, or modify thermal/electrical characteristics.
材料: Fumed silica, calcium carbonate, or other mineral powders
Additives
Provide specific functionalities such as color (pigments), UV resistance, flame retardancy, or adhesion promotion.
材料: Organic pigments, stabilizers, adhesion promoters

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Incomplete curing due to <0.1% catalyst concentration deviation Gel time extension beyond 300 seconds causing incomplete mold filling Automated catalyst injection system with 0.01% concentration tolerance and real-time viscosity monitoring
Thermal cycling between -40°C and 200°C at >10°C/min rate Microcrack formation at 50 μm spacing due to coefficient of thermal expansion mismatch (250 ppm/°C) Graded modulus interlayer with 0.5 mm thickness and 100-500 MPa modulus gradient

工程推理

运行范围
范围
0.1-15 MPa pressure, -60°C to 250°C temperature, 0.1-1000 cP viscosity
失效边界
Thermal degradation at 300°C (onset of Si-O bond cleavage), tensile failure at 5 MPa stress, viscosity increase beyond 5000 cP causing flow cessation
Siloxane backbone depolymerization via thermal-oxidative degradation (Arrhenius kinetics with activation energy ~150 kJ/mol), chain scission under mechanical stress exceeding 5 MPa yield strength, crosslink density increase beyond 0.5 mol/m³ causing glass transition
制造语境
液体硅树脂 在 化学制造 中会按材料、工艺窗口和检验要求共同评估。

别名与俗称

LSR Liquid Silicone Rubber Silicone Elastomer Resin Flowable Silicone

行业别名与关键词

该产品在 CNFX 数据库中的搜索词、别名和技术称呼。

应用匹配与尺寸矩阵

运行限制
pressure:Atmospheric to 50 psi during application, cured part withstands up to 1000 psi compressive
flow rate:0.1-10 mL/min for precision dispensing, viscosity-dependent
temperature:-50°C to 250°C continuous, up to 300°C intermittent
slurry concentration:Not applicable - pure resin system, can be diluted with compatible solvents up to 20% by volume
兼容性
Electronic potting/encapsulationHigh-temperature gasketing/sealingFlexible mold making for casting
不适用:Strong oxidizing acids or bases (e.g., concentrated sulfuric acid, sodium hydroxide solutions)
选型所需数据
  • Cured part thickness requirement (mm)
  • Total volume to be filled/coated (mL or cm³)
  • Required pot life/working time before curing (minutes)

可靠性与工程风险分析

失效模式与根因
Thermal degradation
原因:Exposure to temperatures exceeding the resin's thermal stability limit, leading to cross-linking breakdown, embrittlement, and loss of mechanical properties.
Chemical incompatibility
原因:Contact with incompatible substances (e.g., strong acids, bases, solvents, or certain oils) causing swelling, softening, or dissolution of the silicone resin.
维护信号
  • Visible cracking, crazing, or discoloration (yellowing/browning) on the resin surface
  • Audible creaking or cracking sounds during thermal cycling or mechanical stress
工程建议
  • Implement strict temperature monitoring and control systems to prevent exposure beyond the resin's specified operating range, typically -50°C to 200°C for standard grades.
  • Conduct compatibility testing with all contacting fluids and materials during system design, and establish regular inspection protocols for early detection of chemical attack.

合规与制造标准

参考标准
ISO 10993-5:2009 (Biocompatibility testing)ASTM D2240-15 (Hardness testing)CE Marking (EU compliance for medical/safety applications)
制造精度
  • Viscosity: +/-5% of specified value
  • Cure time: +/-10% of specified duration
质量检验
  • FTIR Spectroscopy (chemical composition verification)
  • Shore A Hardness Test (mechanical property validation)

生产该产品的制造商

具备该产品生产能力的中国制造商与相关工厂资料。

制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

供应链相关产品与组件

搅拌组件

负责在结晶单元内混合并搅动化学溶液,以促进晶体均匀形成的机械组件。

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搅拌器(可选)

一种可选机械设备,用于混合、搅拌或均质化化学品储罐内的物料。

查看规格 ->
搅拌器/混合器

一种用于在化学储罐内混合、搅拌或搅动流体,以确保均匀性、促进反应或维持悬浮状态的机械设备。

查看规格 ->
搅拌器头部总成

直接与化学桶内混合物接触并对其进行搅拌的机械总成,通常包括搅拌轴连接件、叶轮安装机构和密封组件。

查看规格 ->

常见问题

What is the typical cure time for this liquid silicone resin?

Cure time varies based on formulation and conditions, typically ranging from minutes to hours. Specific cure times can be customized by adjusting the catalyst system and temperature.

What temperature range can this silicone resin withstand after curing?

The cured silicone resin maintains its properties across a wide operating temperature range, typically from -50°C to 200°C, with some formulations capable of withstanding higher temperatures.

How does the silica filler affect the properties of the silicone resin?

Silica filler enhances mechanical properties including tensile strength, tear resistance, and hardness while maintaining flexibility. It also improves thermal stability and reduces shrinkage during curing.

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CNFX Industrial Index v2.6.05 · 化学制造

数据基础

CNFX 制造商资料、技术分类、公开产品信息和持续合理性检查。

初步技术归类
本页用于结构化准备研究、RFQ 和供应商评估,不替代买方自己的供应商资质审查、标准核验和技术批准。

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