Description

Poly(1,1-Dimethylsilazane) is a versatile organosilicon polymer featuring a backbone of alternating silicon and nitrogen atoms with pendant methyl groups. This structure is critical for its role as a high-performance precursor in advanced materials science, particularly for creating silicon nitride (Si3N4) and silicon carbonitride (SiCN) ceramics via polymer-derived ceramic (PDC) routes. It is essential for manufacturers and R&D teams in the electronics, aerospace, and high-temperature materials sectors seeking to produce components with exceptional thermal stability, chemical resistance, and mechanical strength.

Application

• Polymer-Derived Ceramics (PDCs): Primary precursor for the fabrication of silicon nitride and silicon carbonitride ceramic fibers, coatings, and matrix composites through pyrolysis.
• Advanced Coatings: Used to apply protective, high-temperature resistant ceramic coatings on metals, graphite, and other substrates for aerospace and industrial applications.
• Microelectronics & Semiconductor Packaging: Serves as a dielectric material precursor and a passivation layer in device fabrication, enhancing performance and reliability.
• Additive Manufacturing: Enables the 3D printing of pre-ceramic polymer structures that can be converted into complex, net-shape ceramic components.
• Ceramic Matrix Composites (CMCs): Acts as a matrix precursor for reinforcing fibers (e.g., carbon, silicon carbide) to produce lightweight, high-strength composites for extreme environments.
• Surface Modification: Utilized to modify surface properties of materials, improving hydrophobicity, adhesion, or chemical resistance.
• Research & Development: A key raw material in academic and industrial labs for developing new ceramic and hybrid organic-inorganic materials.

Basic Information

Product Name	Poly(1,1-Dimethylsilazane)
CAS No.	89535-60-4
Molecular Formula	(C2H7NSi)n
Molecular Weight	Variable (Polymer)
Synonyms	Poly(dimethylsilazane); PDMSZ; 1,1-Dimethylsilazane homopolymer; Polydimethylsilazane; Silicon nitride polymer precursor; Perhydropolysilazane (related class); Inorganic polymer; Ceramic precursor polymer
EINECS	Contact for details

Quality Control

Our Poly(1,1-Dimethylsilazane) is manufactured under controlled conditions to ensure batch-to-batch consistency critical for ceramic yield and final material properties. Quality is verified through a suite of analytical techniques including Gel Permeation Chromatography (GPC) for molecular weight distribution, NMR for structural confirmation, and Karl Fischer titration for moisture content. A comprehensive Certificate of Analysis (COA) detailing purity, viscosity, and other key parameters is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive). Store in a cool, dry, well-ventilated place at room temperature (15-25°C) under an inert atmosphere (e.g., nitrogen or argon) to prevent degradation and cross-linking from exposure to moisture and oxygen. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (NMR)	≥ 95%
Molecular Weight (GPC, Mn)	800 - 2500 Da (Grade dependent)
Viscosity (25°C)	50 - 500 mPa·s (Grade dependent)
Water Content (KF)	≤ 0.1%
Ceramic Yield (1000°C, N2)	≥ 70%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.