SUNTHERM ALWOOL Polycrystalline Alumina Fiber Needle-punched Blanket

Product Description:

SUNTHERM ALWOOL polycrystalline alumina fiber needle-punched blanket is manufactured from polycrystalline alumina fibers produced via the "sol-gel" process and processed through an advanced needle-punching technique. The polycrystalline alumina fibers, composed of alumina and silica, exhibit a dense internal structure and stable crystalline phases. The needle-punching process significantly enhances fiber interlocking, endowing the blanket with outstanding tensile strength, excellent thermal stability under high temperatures, strong resistance to chemical erosion, low thermal shrinkage, low thermal conductivity, and minimal slag ball content. With a long-term service temperature of up to 1600°C, the product demonstrates superior dimensional stability and exceptional thermal insulation performance under extreme high-temperature conditions, making it suitable for prolonged use in demanding environments.

Product Features:

Excellent high-temperature resistance and thermal stability

Low heat accumulation, low thermal conductivity, and minimal slag ball content

Outstanding tensile strength and thermal-state strength

Superior corrosion resistance, particularly to alkali metals

Good resistance to delamination and high surface smoothness

High thermal reflectivity

Product Applications:

Refractory and thermal insulation linings for industrial kilns and furnaces

High-temperature insulation equipment and pipelines

High-temperature sealing gaskets

High-temperature filtration media

Substrate material for automotive three-way catalytic converters

Aerogel thermal insulation composites

Raw material for modules and folded blocks

Product Technical Parameters:

Item		Test Standard	ALWOOL-72
Chemical Composition Al₂O₃:SiO₂(%)		Chemical Analysis	72:28
Mineral Structure		XRD	δ−Al₂O₃ ​/γ−Al₂O₃ /Mullite
Classification Temperature (°C)		GB/T 3003-2017	1600
Shot Content(≥45um)(%)		GB/T 5480-2017	0-2
Loss on Ignition (%)		GB/T 32179-2015	0.1
Fiber Density (g/cm³)		GB/T 5071-2013	3.1
Average Fiber Diameter (μm)		GB/T 5480-2017	5.5-7.5
Specific Heat Capacity (J/kg·K)		GB/T 19466.4-2016	1.17×10³-1.21×10³
Linear Shrinkage (%)	1400°C×24h	GB/T 17911	≤1
	1600°C×24h		≤1
Thermal Conductivity (W/m·K)	600°C	GB/T 17911	B.D.=96kg/m³ 0.079 0.150 0.215	B.D.=128kg/m³ 0.082 0.152 0.210	B.D.=150kg/m³ 0.070 0.118 0.160
	1000°C
	1200°C
Tensile Strength (kPa)		GB/T 17911	B.D.=96kg/m3 ≥50	B.D.=128kg/m3 ≥70	B.D.=150kg/m3 ≥95

Product Specifications:

Thickness (mm)	Bulk Density (kg/m³)			Width (mm)	Length (m)
	96	128	150
3mm	√	-	-	610/1220	7.2/14.4
6/7.5/10/12.5mm	√	√	√	610/1220	7.2/14.4
20mm	√	√	-	610/1220	3.6/7.2
25mm	√	√	-	610/1220	3.6/7.2
Width can be customized: 610 mm – 1500 mm
Note: Specifications can be tailored according to customer requirements.

About us:

Zibo Soaring Refractory & Insulation Materials Co., Ltd. was established in 1993 and is a leading professional manufacturer of high-performance insulation materials. The company operates under its registered trademark SUNTHERM, approved by the State Trademark Bureau. The brand name reflects its core values: "SUN" represents sustainability and environmental responsibility, while "THERM" signifies a commitment to service excellence and continuous innovation.

SUNTHERM production facility spans 180,000 square meters and is equipped with 46 advanced production lines, achieving an annual output capacity of 600,000 tons. Through the use of state-of-the-art equipment, optimized manufacturing processes, and energy-efficient technologies, SUNTHERM delivers high-quality products tailored to customer needs. In addition to material production, the company also designs and manufactures its own production lines, supported by an independent R&D team focused on product innovation and technical development.

SUNTHERM main product categories include ceramic fiber, bio-soluble fiber, rock wool, and next-generation fiber materials. The product range covers ceramic fiber blankets, boards, papers, and full rock wool production lines. These materials are widely applied in industrial furnaces, household appliances, pipeline insulation, stoves, ovens, energy storage systems, and HVAC solutions.

With a growing global presence, SUNTHERM products are now exported to over 80 countries and regions, including Europe, North America, the Middle East, Southeast Asia, and Latin America.

Product Certificates：

SUNTHERM has passed a variety of industry certification tests, such as CE, SGS, ASTM, ISO9001-2000, SASO, ROHS, BV, MSDS and so on.

Customer visits:

Packaging Display:
SUNTHERM boasts a professional team with vast experience in tailoring packaging solutions for diverse products across various industries.

Related Products:

FAQ:

Q1: You are a manufacture or a trading company ?

A1: We are a manufacturer founded in 1993, located in Shandong China. We not only provide the high quality products with the best price, but also can offer the best pre-sale service and after-service.

Q2: Can you provide free samples ?

A2: Free samples are available !

Q3: What is your MOQ?

A3: We don't have particular MOQ, we can accept any order for any different projects.Price depends on quantity.

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