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PHENOLIC COTTON CLOTH LAMINATEDSHEETS

Phenolic Cotton Cloth Laminated Sheets (Textolite), also known as High-performance thermoset laminates, are made by impregnating layers of woven cotton cloth with phenolic resin. 

These layers combine to form a stiff, thick sheet under high temperatures and pressures. The phenolic resin matrix adds dimensional stability and chemical resistance, while the woven cotton reinforcement offers superior mechanical strength, wear resistance, and impact resistance.

What are the key features of Phenolic Cotton Cloth Sheets?

-Dimensional Stability: It keeps its shape under a variety of environmental and temperature situations.

-High Mechanical Strength: Compared to many other thermoset laminates, the cotton reinforcement guarantees higher impact, tensile, and flexural strength. 

-Resistance to Heat 

It functions dependably at temperatures between 120 and 140°C. can tolerate high temperatures, which are common in industrial environments, without suffering appreciable deformation. 

- Excellent for sections that experience friction or repetitive action, it has good wear and abrasion resistance. 

-Chemical Resistance: This feature prolongs the product's life under challenging conditions by being resistant to a variety of oils, greases, and mild chemicals. 

-Moderate Electrical Insulation: These sheets are appropriate for some electrical insulation applications since phenolic resins offer respectable dielectric qualities. 

-Simple Machinability 

 Can be machined to produce unique parts using common equipment like sawing, drilling, and milling. 

-Cost-Effective: At a comparatively low cost, it offers a balance of mechanical and electrical qualities.

Technical Specifications:

1、Density：1.3 – 1.45 g/cm³（depends on the fabric density and resin concentration）

2、Flexural Strength：120 – 180 MPa（Depending on the type of weave and sheet thickness）. 

3、Compressive Strength：200 – 300 MPa（greater than a lot of thermoplastics）.

4、Tear Strength：80 – 120 MPa（determined in the machine's direction）

5、Thermal Conductivity：~0.3 W/m·K（Moderate insulating qualities）

6、Temperature Resistance：Up to ~120 – 140°C (continuous)（Exposures in the short term may be greater）

7、Dielectric Strength：~8 – 12 kV/mm （Adequate for applications requiring moderate voltage）

8、Impact Strength (Charpy)：6 – 10 kJ/m²（Impact resistance is enhanced by cotton reinforcing）

What are the advantages and benefits of Phenolic Cotton Cloth Sheets?

1、 Adaptable Machining 

can be easily twisted, machined, drilled, and tapped, making it possible to fabricate complex components. 

2、 Sturdy Mechanical Performance 

Perfect for mechanical components that are prone to wear and dynamic stresses. 

3、 Oil and Chemical Resistance 

It can be used in settings that contain fuels, lubricants, or mild acids or bases. 

4、 Equilibrium Electrical Insulation 

G10/FR4 (glass-epoxy) may be too high for many lower-voltage applications. 

5、 Adaptable: offered in customized sizes, finishes, and thicknesses. 

6、 A decrease in vibration and noise 

Compared to more durable materials like metals or glass-based laminates, cotton fabric structures are more effective in reducing noise.

7、 Noise reduction: lessens mechanical system vibrations.

8、 Economical 

While still providing adequate performance, they are usually less expensive than laminates made of glass fiber and some engineered polymers. 

What applications are Phenolic Cotton Cloth Sheets used for?

1、Work surfaces, assembly guides, or clamping fixtures that require durability and machinability are examples of industrial jigs and fixtures.

2、Gears, bearings, bushings, wear pads, jigs, and support blocks are examples of mechanical components. 

3、Components in textile and paper mills are subjected to wear and repetitive friction. 

4、Electrical equipment includes coil supports, terminal boards, switchgear components, and low- to medium-voltage insulating parts. 

5、Construction includes dividers and decorative panels. 

6、Automotive & Rail: Clutch plates, brake linings, or other friction elements (in specific grades). 

7、Handles, tea trays, and kitchenware are examples of consumer goods.

8、Marine and heavy equipment are structural elements that need to be durable and resistant to moisture. 

How to store and handle Phenolic Cotton Cloth Sheets?

1、 Precautions for Handling 

When handling, especially in electrical applications, wear gloves to keep surfaces clean and avoid contamination. 

2、 The Storage Setting 

Keep out of direct sunlight and in a dry, well-ventilated place. Over time, moisture absorption may increase due to high humidity. 

3、 Lifespan 

There is no set expiration date for phenolic laminates. However, their mechanical and electrical qualities may be impacted by prolonged storage in unfavorable environments. If kept for long periods of time, periodically check.

4、 Control of Temperature 

Sheets should be kept in a temperature-stable environment (preferably between 10 and 30°C). Dimensional alterations could result from extreme swings. 

5、 Supported and Flat Stacking 

To avoid bending or warping, store sheets horizontally with adequate support. Don't put too much weight on top. 

Frequently Asked Questions

Question 1： Are these sheets suitable for applications involving food contact? 

A: In general, direct food contact is not intended for phenolic laminates. 

Question 2： Can laminated sheets made of phenolic cotton fabric be used outside? 

A： They can be used outside, although over time, continuous exposure to high humidity and UV rays may cause some deterioration. Selecting a grade with moisture-resistant qualities or sealing or coating the laminate can be beneficial. 

Question 3: Are laminated sheets made of phenolic cotton cloth suitable for usage in high-temperature settings? 

A: Standard grades usually run continuously at temperatures between 120 and 140°C. It is advised to use alternate laminates (such as glass-fiber-based) or special high-temperature phenolic grades for greater temperatures.

Question 4: What sizes and thicknesses are offered? 

A:The typical thicknesses are between 0.5 and 100 mm or more. 1020 × 1220 mm, 1220 × 2440 mm, or bespoke measurements upon request are common standard sheet sizes.

Question 5: What distinguishes paper-based phenolic laminate from phenolic cotton fabric laminate? 

A: The cotton cloth laminate (Textolite) offers improved impact resistance and increased mechanical strength by using woven fabric as the reinforcing material. In contrast to cotton cloth laminates, paper-based phenolic, also referred to as Bakelite sheets, uses layers of paper and provides superior electrical insulation but less mechanical strength.