Part 1: Product Overview

Xylem Fiber is an organic flocculent fiber material produced from natural renewable wood through chemical treatment and mechanical processing.It is manufactured into fibers of different lengths and thicknesses via screening, splitting, high-temperature treatment and other processes to meet the demands of various industries. With a treatment temperature of approximately 260℃ during production, the product is chemically stable under normal conditions and resistant to corrosion by common solvents, acids and alkalis.

Our xylem fiber products are made of selected high-quality softwood such as pine and fir. They are non-toxic, odorless, pollution-free and non-radioactive, making them green and environmentally friendly products. Its unique fibrous structure can form a stable three-dimensional network in the mixing system, thereby enhancing the support, durability and overall stability of the system.

Core Value of Xylem Fiber

As a natural and renewable functional additive, xylem fiber plays multiple roles such as anti-cracking, thickening, water retention and reinforcement in building materials, industrial products and other fields relying on its physical structure. It is an indispensable component of modern green building materials and functional composite materials.

Part 2: Core Advantages & Characteristics

Three-dimensional network structure for enhanced system stability

Xylem fiber features excellent flexibility and dispersibility. It disperses rapidly after mixing and forms a three-dimensional network, significantly improving the support and durability of the system, as well as the stability, strength, compactness and uniformity of materials.

Outstanding anti-cracking performance

By reducing tension during the drying process, xylem fiber provides an obvious anti-cracking effect. Its dimensional stability and thermal stability deliver excellent thermal insulation and anti-cracking performance in thermal insulation materials.

Excellent water retention and thickening performance

Xylem fiber can absorb 6–8 times its own weight in water. Through the capillary action of the fiber structure, it quickly transfers moisture inside the system to the surface and interface of the slurry, ensuring even moisture distribution, reducing crusting, and improving bonding strength and surface strength.

Superior high-temperature resistance

It has strong anti-freezing and heat-resistant capacity:

Insulates for several days at 150℃;

Insulates for dozens of hours at 200℃;

Insulates for several hours above 220℃. Heat resistance up to 800℃ with flame retardant properties.

Good chemical stability

Insoluble in water, weak acid and alkaline solutions; neutral pH value (7.0±1.0), which improves the corrosion resistance of the system.

Improved workability

Enhances the workability, operability and anti-sagging performance of materials, reduces adhesion to tools, extends the open time, and accelerates construction speed.

Green and environmental protection

Made from 100% natural renewable raw materials, pollution-free during production and application, and naturally degradable.

Core Indicators of Xylem Fiber

Item	Unit	Index Range
Fiber Length	mm	0.5–3.0 (customizable)
Bulk Density	g/cm³	Approx. 0.12–0.16
Water Absorption	times	≥ 5–8 times its own weight
Temperature Resistance	℃	230 (short‑term: 280–800℃)
pH Value	-	5.0–9.0 (neutral)
Ash Content	%	≤ 11–15
Moisture Content	%	＜ 5

Note: Actual indicators are subject to the official test report of your company.

Part 3: Product Classification

Product Type	Fiber Length	Main Features	Main Applications
Standard Xylem Fiber	0.5–1.5 mm	Universal type, good dispersibility	Putty powder, plastering mortar, tile adhesive
Long Fiber Type	1.5–3.0 mm	Outstanding reinforcement	Thermal insulation mortar, anti-cracking mortar, gypsum products
Super-fine Fiber	＜ 0.5 mm	Excellent filling performance	Coatings, embossed paint, fine chemicals
High-purity Bleached Fiber	0.5–2.0 mm	High whiteness, low impurities	Leather filling, high-grade building materials, white system products

Part 4: Main Application Fields

With its unique physical structure and multi-functional properties, xylem fiber is widely used in building materials, industrial products, environmental protection materials and many other fields.

1. Building Materials (Core Application)

Xylem fiber is most widely used in construction chemicals, serving as an indispensable functional additive for dry-mixed mortar, coatings and other products.

Water-resistant Putty / Plastering Mortar

Prevents coating cracking and improves surface flatness.

Transports and distributes moisture evenly inside the slurry, reducing crusting.

Improves bonding strength and surface strength.

External Wall Thermal Insulation Mortar

Forms a three-dimensional network to enhance overall stability of the insulation layer.

Improves anti-cracking performance and prevents insulation layer cracking.

Ensures long-term performance with good dimensional and thermal stability.

Tile Adhesive / Joint Gypsum

Improves water retention and extends open time.

Enhances bonding strength and prevents hollowing and falling off.

Improves workability and reduces adhesion to tools.

Interior & Exterior Wall Coatings / Embossed Paint

Acts as thickener and thixotropic agent to improve rheological properties.

Prevents sagging and ensures uniform coating thickness.

Enhances mechanical properties of the paint film.

2. Industrial Manufacturing

Friction & Sealing Materials

Carbonizes at high temperature in asbestos, fiberglass and friction sealing materials, providing lubrication without damaging mating surfaces.

Reduces noise and improves tensile, flexural and wear resistance.

Lowers product weight and cost.

Wood-Plastic Composites

Used for extrusion molding of needle‑like xylem fiber/HDPE composites.

Flame-retardant and smoke-suppressant xylem fiber/PVC composites with oxygen index ＞ 35%, classified as flame-retardant grade.

Key indicators: Flexural strength ≥ 50 MPa, Modulus of elasticity ≥ 3.0 GPa, Tensile strength ≥ 30 MPa.

Leather Industry

Used as inert filler to increase coagulation layer thickness.

Provides excellent hand feel and elasticity to leather.

Enhances wear resistance and tensile toughness of the leather surface.

PVC Filter Media / Welding Electrodes

Used in PVC filter materials.

Provides adsorption and reinforcement in welding electrodes.

3. Gypsum Products

Gypsum Board / Gypsum Block

Improves anti-cracking performance of gypsum products

Enhances overall strength and stability

Improves processability

Wood-pulp Sponge

Used as skeleton material for sponges

Improves water absorption and resilience

4. Road & Concrete Engineering

Asphalt Pavement

Improves stability of asphalt mixtures

Prevents pavement cracking

Extends service life

Concrete Products

Reinforces and prevents cracking in concrete

Improves durability of concrete

5. Seed Pelleting & Agriculture

Ideal carrier material for pelleting of flower or beet seeds.

Provides seed protection and slow-release nutrition.

6. Animal Hygiene

Natural plant fiber made from selected local wood species.

Used for animal bedding and hygiene products.

7. Filter Materials

Used as filler and structuring agent for filter media.

Improves filtration efficiency and precision.

Part 5: Technical Parameters & Selection Guide

Technical Parameters

Item	Unit	Index
Fiber Length	mm	0.075–3.0 (multiple specifications)
Bulk Density	g/cm³	0.12–0.16
Water Absorption	%	≥ 500–800 (5–8 times its weight)
Temperature Resistance	℃	230 (short‑term: 280–800)
pH Value (1% solution)	-	5.0–9.0
Ash Content	%	≤ 11–15
Moisture Content	%	＜ 5
Fiber Content	%	≥ 90

Selection Guide

Application	Recommended Fiber Length	Key Functions
Putty / Plastering Mortar	0.5–1.5 mm	Anti-cracking, water retention, workability
External Wall Insulation Mortar	1.5–3.0 mm	Reinforcement, anti-cracking, stability
Tile Adhesive	0.5–1.0 mm	Water retention, open time, bonding strength
Embossed Paint	0.5–1.0 mm	Thickening, thixotropy, anti-sagging
Wood-plastic Composites	1.0–2.0 mm	Reinforcement, processability
Friction & Sealing Materials	1.0–2.5 mm	Lubrication, wear resistance, noise reduction
Leather Filling	Super-fine fiber	Hand feel, elasticity, filling effect

Part 6: Mechanism of Action

Three-dimensional Network Structure

After dispersing in the system, xylem fibers interlock with each other to form a stable three-dimensional spatial network. This structure:

Enhances support and durability of the system.

Improves stability, strength and compactness of materials.

Reduces shrinkage and expansion, improving construction or precast precision.

Capillary Transport Effect

Due to the capillary action of the fiber structure, xylem fiber rapidly transfers moisture inside the system to the slurry surface and interface, which:

Distributes moisture evenly and significantly reduces crusting.

Remarkably improves bonding strength and surface strength.

Reduces tension during drying and provides anti-cracking effect.

Adsorption & Thickening

Xylem fiber can absorb 6–8 times its own weight in water, effectively increasing the viscosity, water retention and workability of the system.

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