Oil Resistance Ozone Resistance Weather Resistance Chloroprene Rubber Chemical Corrosion Resistance Cr

• Customization: Available
• Raw Material: Synthetic Rubber
• Material: Silicone Rubber
• Model NO.: xxxx
• Appearance: Powder
• Form: Powdered Rubber
• Color: White
• Transport Package: PP Bag
• Specification: 25kg/1 bag

Product Description

Product Overview

Chloroprene is the common name for the organic compound 2-chlorobutanol-1, 3-diene. This colorless liquid is the monomer in the production of the polymer polychloroprene, a type of synthetic rubber. Chloroprene rubber (CR) possesses the following properties: good chemical resistance; high resistance to aging and ozone; low risk of glazing; better wear resistance than natural rubber (NR); higher cost than NR . Chloroprene elastomers are rigid, usually soft, but always elastically deformable under load. After stress, elastomers return to their initial shape. When heated, elastomers do not become plastic (and are not deformable), and will not melt. At high temperatures, decomposition takes place and the material is destroyed. The elasticity of an elastomer material is defined by the degree of cross-linking, which is called vulcanization or curing. Vulcanized elastomers are also called "rubber."

Product Parameters

Property/Category	Chloroprene Rubber (CR)	Natural Rubber (NR)
Physical Properties
Tensile Strength	Moderate to high (15-25 MPa)	Very high (20-30 MPa)
Hardness (Shore A)	40-95	30-90
Elasticity	Good elasticity, but lower than NR	Excellent elasticity (high rebound resilience)
Low-Temperature Flexibility	Retains flexibility down to -40°C (with modifications)	Becomes brittle below -50°C (poor low-temperature performance)
Chemical Resistance
Oil & Fuel Resistance	Excellent (resists swelling in oils, fuels, and greases)	Poor (swells significantly in oils and fuels)
Ozone & Weather Resistance	Exceptional (resists UV, ozone, and weathering)	Poor (degrades rapidly under UV/ozone exposure)
Acid/Base Resistance	Good resistance to dilute acids and alkalis	Moderate resistance to weak acids/bases; degrades in strong chemicals
Flame Resistance	Inherently flame-retardant (self-extinguishing)	Highly flammable
Thermal Performance
Service Temperature Range	-40°C to +120°C (short-term up to 150°C)	-50°C to +70°C (degrades rapidly above 80°C)
Heat Aging Resistance	Stable under prolonged heat exposure	Prone to hardening and cracking at elevated temperatures
Mechanical Durability
Tear & Abrasion Resistance	High tear strength and abrasion resistance	Good tear strength but lower abrasion resistance compared to CR
Dynamic Fatigue Resistance	Excellent (withstands repetitive stress)	Moderate (prone to crack growth under dynamic loads)
Environmental Adaptability
Moisture/Hydrolysis Resistance	Good resistance to water and humidity	Poor (absorbs moisture, leading to degradation)
Salt Spray Resistance	Highly resistant (ideal for marine applications)	Susceptible to saltwater corrosion
Electrical Properties
Electrical Insulation	Moderate insulation properties	Excellent insulator (unless filled with conductive additives)
Processing & Applications
Adhesion to Metals	Excellent (requires bonding agents)	Poor adhesion without specialized treatments
Common Applications	- Seals/gaskets (automotive, aerospace) - Hoses/cable jackets - Protective gear - Industrial linings	- Tires - Vibration dampers - Elastic bands - Footwear (non-oil-resistant uses)
Cost & Sustainability	Higher cost (synthetic production)	Lower cost (natural sourcing) but limited by supply chain and environmental factors

 

Key Advantages of CR Over NR:

1. Superior chemical resistance (oil, ozone, fuels).

2. Wider temperature tolerance (both high and low ranges).

3. Flame retardancy without additives.

4. Longer lifespan in harsh environments.

Advantages of NR Over CR:

1. Higher elasticity and tensile strength for dynamic applications.

2. Better low-temperature flexibility (without modification).

3. Biodegradable and renewable resource.

 

Production method

The production of chloroprene rubber (CR) begins with the synthesis of chloroprene monomer (2-chlorobuta-1,3-diene), typically derived from acetylene and hydrogen chloride via catalytic hydrochlorination or through the chlorination of butadiene. The purified monomer is then subjected to emulsion polymerization in an aqueous medium, where it undergoes free radical polymerization under controlled temperature (usually 40-50°C) and pH conditions. A soap solution (e.g., rosin acid or fatty acid salts) acts as an emulsifier, while initiators such as potassium persulfate or redox systems trigger the chain-growth reaction. To regulate molecular weight and polymer structure, chain transfer agents like mercaptans or xanthogen disulfides are introduced. After polymerization, short-stopping agents (e.g., hydroquinone) terminate the reaction to prevent over-polymerization. The resulting latex is stabilized, coagulated using electrolytes (e.g., calcium chloride or acetic acid), and washed to remove residual emulsifiers and unreacted monomers. The coagulated CR crumb is then dried through hot-air or vacuum drying to achieve a moisture content below 1%. Post-drying, the rubber undergoes compounding, where additives such as antioxidants (e.g., phenylenediamines), reinforcing fillers (carbon black or silica), plasticizers (petroleum-based oils), and vulcanizing agents (magnesium oxide and zinc oxide) are mixed into the polymer matrix via mechanical mastication in mixers or mills. The compounded CR is finally shaped into sheets, extruded, or molded, followed by sulfur-based or peroxide-based vulcanization to crosslink the polymer chains, enhancing its mechanical stability, heat resistance, and chemical durability. Advanced production lines may incorporate solvent recovery systems and wastewater treatment to minimize environmental impact. The entire process emphasizes precise control of monomer purity, polymerization kinetics, and curing parameters to tailor CR's final properties for specific industrial applications.
 

 

Uses

 

Industry	Applications of Chloroprene Rubber (CR)	Key Properties Utilized
Automotive	- Fuel hoses & oil-resistant tubing - Vibration mounts & bushings - Seals & gaskets (engine, doors) - Timing belts & radiator hoses	Oil resistance, heat resistance, dynamic fatigue resistance
Construction	- Bridge expansion joints - Roofing membranes - Adhesives for concrete/steel - Window/door seals	Weather resistance, adhesion, durability
Electrical & Electronics	- Cable jacketing (marine/mining cables) - Insulation layers - Conductive rubber parts	Flame retardancy, electrical insulation, ozone resistance
Marine & Offshore	- Diving suits & wetsuits - Anti-corrosion coatings - Ship engine mounts & seals	Saltwater resistance, low-temperature flexibility
Industrial Manufacturing	- Conveyor belt covers (chemical plants) - Industrial hoses (chemical transfer) - Rubber linings for tanks/pipes	Chemical resistance, abrasion resistance
Oil & Gas	- Oilfield hoses & seals - Gaskets for drilling equipment - Pipeline protection sleeves	Oil/fuel resistance, high-pressure tolerance
Aerospace	- Aircraft fuel system seals - Vibration dampers - Fire-resistant gaskets	Extreme temperature stability, flame retardancy
Medical & PPE	- Surgical gloves (latex-free alternatives) - Respirator masks (elastic straps) - Disposable protective gear	Hypoallergenic, chemical safety
Consumer Goods	- Shoe soles (non-slip) - Sports equipment grips - Rainwear adhesives	Flexibility, waterproofing
Military & Defense	- Gas masks & protective suits - Shock-absorbing pads - Seals for armored vehicles	Flame/chemical resistance, durability

 

 

Company Profile

 

Weifang Phoenix New Material Co., Ltd

 

       Weifang Phoenix New Material Co., Ltd is a high-tech chemical enterprise integrating research and development,

production, sales and technical services. Headquartered in Weifang, Shandong Province. Its production facilities are

ocated in Weifang Binhai Chemical Industry Park, a state-approved chemical industry park.
 

      Our mission is to be the leading sustainable "one-stop shop" chemical solutions company, providing customers

with innovative, science-led, differentiated products and solutions. To this end, we provide a safe and healthy working

environment for our employees and comply with all local, national and international regulations.