Shangdong Shengrun Textile Co., Ltd. is one of the most reliable manufacturers and suppliers of modacrylic material in China. With abundant experience, we warmly welcome you to wholesale customized modacrylic material made in China here from our factory. If you have any enquiry about quotation, please feel free to email us.
Modacrylic is a flame-retardant synthetic fiber designed to balance safety with the requirements of everyday wear. Unlike fabrics that have undergone flame-retardant treatments, its flame-retardant properties are inherent to the fiber itself; consequently, they do not diminish or disappear through washing or prolonged use. Compared to many similar materials, it offers superior resistance to chemicals, moisture, and UV radiation, while also providing a softer touch and causing less skin irritation than conventional flame-retardant materials.
The fiber is easy to dye, offers high color fastness, and can be efficiently processed using standard textile equipment. It has a wide range of applications, including protective workwear, theater curtains, industrial filtration materials, and synthetic wigs. It is machine-washable, resistant to static electricity, and maintains good physical properties at temperatures up to 180°C. Available forms include staple fiber, tow, and yarn, with specifications that can be customized to meet specific order requirements.
Core strengths
Choose the plan that suits you best.
Inherent flame resistance
The flame-retardant properties of modacrylic material stem from the polymer itself rather than a surface coating. This means its flame resistance does not diminish due to leaching, washing, aging, or heavy use. Such fabrics are self-extinguishing within seconds of being removed from a flame, produce minimal smoke, and do not form molten droplets-characteristics that are crucial for protective clothing, seating in public spaces, and children's sleepwear.
Heat resistance with shape retention
The material maintains mechanical integrity up to 180°C (356°F) without softening or distorting. Shrinkage is controlled below 3% in boiling water and below 5% at 160°C dry heat-figures that allow reliable pattern cutting and finishing. This stability also prevents bagging or sagging in upholstery and filter bag applications over extended service life.
Broad chemical and environmental tolerance
Modacrylic stands up to mineral acids, caustic alkalis, and most organic solvents used in industrial cleaning and painting operations. It also resists hydrolysis and UV degradation better than nylon or cotton, making it suitable for outdoor awnings, automotive interiors, and chemical plant coveralls where frequent decontamination is required.
Superior dyeability with lasting color
Unlike many specialty fibers that require carrier-assisted dyeing, modacrylic material can be uniformly dyed with cationic and disperse dyes at ambient temperatures. It yields rich, deep shades-including vibrant reds and navy blues-and exhibits excellent wash and light fastness (AATCC ratings of 4–5). The material requires no pre-scouring or special mordanting, thereby shortening processing times and reducing chemical waste.
Product Specifications
| Parameter | Range | Notes |
|---|---|---|
| Acrylonitrile Content | 35%–85% | FTC definition; copolymer with vinyl chloride or vinylidene chloride |
| Density | 1.30–1.42 g/cm³ | Typical range varies by grade |
| Dry Tenacity | 1.8–2.5 g/denier (approx. 22–30 cN/tex) | Comparable to weaker polyolefins; lower than nylon |
| Wet Tenacity | 1.7–2.4 g/denier | Minimal strength loss when wet |
| Elongation at Break | 35%–53% | High extensibility; varies by specific formulation |
| Moisture Regain | 0.4%–4.0% | Low moisture absorption; may develop static charge |
| Softening Point | 120–140°C | Low heat tolerance; ironing requires low-temperature settings |
| Maximum Service Temperature | Up to 190°C | Maintains properties at elevated temperatures |
| Limiting Oxygen Index (LOI) | 28–33 (up to 43 in advanced grades) | Inherently flame-resistant; self-extinguishing |
| Solubility | Soluble in butyrolactone and warm acetone | Resistant to most acids, alkalis, and organic solvents |
| Chemical Resistance | Excellent | Chemical resistance is a key advantage |
| Elastic Recovery | 79%–99% at 2% elongation | Fair to excellent recovery; influenced by irregular cross-sectional structure |
Why Choose Us
1. Proven consistency across batches
We control polymerization and spinning in-house, so every lot meets the same spec-no surprises in shrinkage, dye uptake, or flame performance. Customers in protective wear and filtration rely on this repeatability for their own compliance testing.
2. Technical support, not just sales
Our team works with you on processing parameters-spinning speeds, finishing temps, dye recipes-to reduce trial cycles. We've solved issues like static buildup during carding and uneven dyeing in dark shades for clients worldwide.
3. Flexible customization
Need a specific crimp level, cut length, or denier outside standard ranges? We adjust without minimum-order penalties. For specialty uses-flame-resistant wigs, automotive felt, or high-loft batting-we'll engineer the fiber to your end-use, not force your process to fit our stock.
4. Responsive supply chain
Short lead times and consolidated shipping options mean you hold less inventory. We maintain buffer stock of popular grades and can expedite rush orders within 5 working days-something larger mills often can't match.
5. Third-party validated quality
Our modacrylic carries test reports from accredited labs (UL, SGS, or Intertek) for LOI, smoke density, and thermal shrinkage. You get the documentation you need for your own certifications without chasing us for data.
FAQ
Q: Is modacrylic material flame-resistant, or is it chemically treated?
A: Naturally inherent. The flame retardancy comes from the polymer's chemical structure (acrylonitrile plus halogenated comonomers). It does not wash out, wear off, or degrade with age-unlike topical finishes applied to cotton or polyester.
Q: Can modacrylic be blended with other fibers?
A: Yes. Common blends include wool (for protective suits), cotton (for comfort in workwear), and rayon (for cost-effective upholstery). Blending also improves hand feel and breathability while retaining overall FR performance, provided the blend ratio stays within safe limits.
Q: What's the maximum temperature it can withstand?
A: Continuous use up to 190°C (374°F). Above that, the fiber begins to soften or shrink. For ironing, use low heat only-never exceed 140°C (284°F) to avoid permanent distortion.
Q: How do you dye modacrylic without damaging its flame resistance?
A: Use cationic or disperse dyes under standard conditions-no high-temperature carriers or aggressive auxiliaries are required. The dyeing process does not affect the fiber's LOI value, so flame performance remains intact throughout coloring.
Q: Is it suitable for outdoor applications?
A: Moderately. It resists UV degradation and mildew better than cotton or nylon, but prolonged direct sunlight may cause gradual embrittlement. For permanent outdoor use, we recommend a UV-stabilized grade or a protective top coating.
