Heptamethyltrisiloxane FOR TEXTILE - heptamethyltrisiloxane factory&supplier

Heptamethyltrisiloxane is revolutionizing textile manufacturing through its unique combination of volatility and surface activity. This advanced silicone fluid serves as a multifunctional processing aid that enhances both production efficiency and final fabric quality across various textile applications.

The compound acts as an exceptionally effective fiber lubricant during spinning and weaving operations, reducing breakage rates by up to 40% while enabling higher processing speeds. Its low viscosity and rapid evaporation characteristics ensure complete removal during subsequent heating processes, eliminating any concern about residual buildup on fibers or equipment.

The thermal stability of heptamethyltrisiloxane (up to 250°C) makes it suitable for high-temperature textile processing, including heat setting, thermofixation, and curing operations. Its complete volatility ensures no interference with subsequent processing steps or final fabric properties.

Heptamethyltrisiloxane represents a significant advancement in textile chemical technology, offering manufacturers the opportunity to improve product quality while simultaneously reducing environmental impact and production costs.

Physical Properties

• Colorless transparent liquid; boiling point 165–175°C; controllable volatility (fully volatilizes within 5–15 minutes)

Chemical Properties

• Reactive Si-O-Si structure with ultra-low surface tension (18–20 mN/m), enabling rapid wetting and penetration.

Basic Product Information

• Product Name: Heptamethyltrisiloxane
• Appearance: Colorless Transparent Liquid

TYPICAL PROPERTIES

Safety Certifications

• Complies with REACH, RoHS, FDA, and textile eco-compliance standards.

Product Functions

• Surface Modification:

Significantly enhances fabric hydrophobic/oleophobic properties, achieving water- and stain-resistant effects.

Improves fiber wettability for uniform dye distribution and higher dye fixation rates.

• Process Optimization:

Acts as a high-efficiency leveling agent, minimizing surface defects (e.g., streaks, unevenness) in textile coatings.

Reduces viscosity of coating pastes/sizing agents, boosting textile processing efficiency.

• Functional Enhancement:

Forms a nanoscale protective network to strengthen fabric weather resistance and chemical stability.

Enhances antistatic properties, ideal for functional apparel (e.g., workwear, sportswear).

Applications

• Natural Fiber Fabrics: Such as cotton, linen, silk, wool, etc. Improves softness, glossiness, and wrinkle resistance of natural fiber fabrics, enhancing their added value.
• Synthetic Fiber Fabrics: Including polyester, nylon, acrylic, etc. Enhances the hand feel, antistatic properties, and water/oil repellency of synthetic fiber fabrics, compensating for inherent defects of chemical fibers.
• Blended Fabrics: Blended fabrics combining the advantages of natural and synthetic fibers. Using heptamethyltrisiloxane can further optimize their comprehensive performance to meet diverse market demands.
• Functional Textiles: Such as outdoor protective clothing, medical textiles, industrial fabrics, etc. Strengthens specific functions of these textiles, such as waterproofing, antibacterial properties, and antistatic performance.

Core Advantages

Market Value

Market Size and Growth Trends

• Global Market Overview

2023 Market Size: The global market size of HMTS in the textile sector is approximately US$120–150 million, accounting for 8–10% of the functional textile auxiliaries market.

Future Growth (2024–2030): Expected to grow at a CAGR of 6–8%, with the market size reaching US$200–250 million by 2030.

Core Drivers:

Rising demand for waterproof and breathable fabrics in outdoor sportswear.

Antibacterial function upgrades in medical textiles (surgical gowns, protective clothing).

Environmental regulations promoting the substitution of per- and poly-fluorinated compounds (PFCs).

Technical Advantages and Competitive Barriers

• Irreplaceable Physicochemical Properties:

Low Surface Tension (16–18 mN/m): Superior to ethanol (22 mN/m), enabling rapid wetting of hydrophobic fibers like polyester/nylon.

Volatility (Boiling Point 152℃): Completely volatilizes during drying, eliminating residual environmental risks.

• Environmental Compliance:

Replaces traditional solvents (e.g., xylene, DMF) and meets:

EU REACH regulations (free of PBT/vPvB characteristics).

OEKO-TEX® Standard 100 certification.

Experimental Data & Case Studies

Applications in Waterproof Fabrics

• Data:

Polyester fabric + 0.5% additive: Initial contact angle reaches 150°, remaining >140° after 50 washes (AATCC TM22).

Coating uniformity deviation <3% (measured by laser thickness gauge).

• Case Study:

Outdoor Brand: Improved yield of waterproof fabrics by 12%, reduced customer complaint rate by 30%.

Applications in Medical Protective Clothing

• Data:

Blood penetration resistance certified to ISO 16603 Level 4.

Air permeability increased by 15% (ASTM D737).

• Case Study:

Leading Domestic Medical Enterprise: Extended service life of protective clothing by 20%.

Applications in Antistatic Workwear

• Data:

Surface resistance reduced from 10¹²Ω to 10⁸Ω (ASTM D257).

• Case Study:

Electronics Factory Workwear Supplier: Reduced electrostatic issues by 90%.

Preparation Process, Core Technologies, and Precautions

Preparation Processes

•  Hydrolytic Condensation Method

Raw Materials: Trimethylchlorosilane, hexamethyldisiloxane.

Procedure:

Hydrolyze trimethylchlorosilane in a reactor to generate trimethylsilanol.

Condense trimethylsilanol with hexamethyldisiloxane.

Purify via neutralization, water washing, drying, and vacuum distillation.

• Hydrosilylation Method

Raw Materials: Hydrogen-containing silicone oil, vinyltrimethoxysilane.

Procedure:

Perform hydrosilylation under catalyst to synthesize intermediates.

Hydrolyze and polycondense intermediates.

Obtain heptamethyltrisiloxane through filtration and purification.

Core Technologies

• Hydrolytic Condensation Method

Key Controls:

Hydrolysis temperature (60–80°C), water dosage, and reaction rate.

Optimization of catalysts (e.g., acidic/basic) and condensation conditions (time, pH).

Achieves >90% yield and 99% purity via precise distillation.

• Hydrosilylation Method

Key Controls:

Catalyst selection (e.g., platinum-based) and reaction parameters (molar ratio, 1:1.05–1.2; temperature, 80–120°C).

Hydrolysis water content (controlled stepwise) and pH adjustment (6.5–7.5).

Ensures low byproduct formation and high selectivity.

Precautions

• Avoid mixing with strong acids or bases.
• Store in a cool, dry place with airtight sealing.
• Wear protective gloves and masks during handling.

Packaging & Ordering

Packaging: 200kg/1000kg plastic drums (customizable).