Plastics, Polymer and Styrene

Heat transfer oil for plastics, polymer and styrene applications

Engineers working in plastic, polymer and styrene manufacturing plants will use heat transfer systems for a range of applications such as:

  • Moulding
  • Extrusion
  • Press heating
  • Line tracing
  • Coating rolls
  • Vulcanising

These applications require heat transfer oil with a broad temperature range to ensure maximum efficiency and effective heat transfer.

There are a lot of heat transfer fluids on the market but not all of them are suitable for the plastics industry.

Manufacturers should select a thermal fluid based on its properties, such as thermal stability and heat transfer efficiency, but must also consider the requirements of the system and the end product and the cost of the fluid itself.

Synthetic fluids are often a good choice over mineral oils as they typically give up to 8 times the life and will help extend changeout times, especially in electric types of heaters which are commonly used.

When working with thermal fluids at high temperatures, you should follow the Dangerous Substances and Explosive Atmospheres Regulations (DSEAR) to keep workers safe.

To adhere to these regulations, employers must carry out regular assessments on the fire and explosion risks of any activities involving dangerous substances, including frequent testing and analysis of the condition of thermal fluids.

You should always ensure that you efficiently manage risk, keep the site safe and train all staff on efficiently operating a heat transfer system to comply with regulations and provide a safe working environment for all employees.

Globaltherm™ heat transfer fluids, by Global Heat Transfer are designed for optimum performance in plastic, polymer and styrene manufacturing applications including press heating, moulding, extrusion and coating rolls.

Globaltherm™ heat transfer fluid works effectively to transfer heat over the complete temperature range specified by your application. These oils have been used extensively in the manufacturing of Polyethylene Terephthalate (PET), nylon, polyester and other synthetic fibres.

This range of thermal oils can be used in both liquid and vapour phase, offering you reliability, versatility and flexibility. Globaltherm™ products also provide the high temperature stability necessary to avoid premature fluid degradation at high operating temperatures.

Globaltherm™ Syntec is the most popular high temperature liquid phase heat transfer fluid and delivers the highest level of customer satisfaction for plastic, polymer and styrene processing applications.

This fluid operates efficiently in applications requiring temperatures of up to 345 degrees Celsius and can be pumped to -3 degrees Celsius.

This heat transfer fluid is a eutectic mixture of biphenyl and diphenyl oxide, which gives the fluid the flexibility to perform in both liquid and vapour phases. It is also interchangeable (for top-up or design purposes) with other similar mix thermal fluids.

Globaltherm™ Omnitech thermal fluid can operate in a temperature range of 15 to 400 degrees Celsius and is excellent for use in heat transfer fluid systems that require precise temperature control.

 

This is a multi-purpose high performance benzyltoluene heat transfer fluid used in plastic processing.

Globaltherm L is recommended for use in the temperature range from -30 degrees Celsius to 360 degrees Celsius and has low viscosity for excellent heat transfer efficiency.

This non-corrosive thermal fluid is recommended for use in an upper temperature range from 250 degrees Celsius to 350 degrees Celsius in closed loop, non-pressurised heat transfer systems.

This heat transfer fluid delivers excellent thermal stability for plastic, polymer and styrene applications ranging in temperature from -20 degrees Celsius to 350 degrees Celsius.

Globaltherm RP™ also has a maximum film temperature of 375 degrees Celsius and a high flash point at 194 degrees Celsius to allow plastics manufacturers to operate a system safely at high temperatures.

This thermal oil has the highest flash point in the market so that you can safely operate your system at higher temperatures for longer.

Globaltherm™ HF is an environmentally friendly, non-toxic and non-hazardous fluid that is thermally stable when operating at temperatures ranging from 5 to 338 degrees Celsius.

Global Heat Transfer also distributes Marlotherm thermal oil for use in plastic, polymer and styrene applications.

This fluid is specified for use in closed loop, forced circulation heat transfer systems and operates efficiently in temperatures ranging from -5 to 350 degrees Celsius.

This benzyl aromatic thermal oil is recommended for use in temperatures ranging from -30 to 280 degrees Celsius. Marlotherm LH has great thermal stability and can be used for long periods of time without reducing performance.

All heat transfer fluids will degrade over time. The rate of degradation is heavily influenced by how frequently the fluid is tested and managed in response to the test results and the analysis of the data.

The degradation process can lead to the formation of carbon, a natural insulator that builds up in the system. This can lead to a lack of flow or the creation of hotspots, which negatively impacts productivity and increases energy costs.

Degradation can also impact fluid viscosity, cause acidic contamination and lead to the formation of light ends that can increase the risk of fire in the presence of an ignition source.

Regular thermal fluid analysis can help you to extend the lifespan of your thermal fluid. You should take a closed sample of the fluid every three months to effectively monitor its status.

To ensure the sample is representative and the results are accurate, take the sample when the fluid is hot and circulating. By doing this, you can clearly understand what is happening inside the system and if the fluid is beginning to degrade you can also schedule the appropriate maintenance.

We can provide a complete thermal fluid sampling and analysis service to help extend fluid life. Engineers will regularly collect representative samples and send it to an accredited laboratory to run eleven approved thermal fluid tests to determine fluid condition. We can then issue a full report on findings and provide recommendations.

As well as the fluid, it is important to regularly inspect the entire heat transfer system to check the condition of the pipework, pressure gauges, gaskets and seals.

Problems with the pipework can cause a leak, which is dangerous for the engineers working on site, and makes the thermal fluid susceptible to ignition if flash points and auto ignition temperatures are reduced and there is an ignition source present.

The best way to maintain a heat transfer system is to implement a preventative maintenance programme.

At Global Heat Transfer we provide a condition based thermal fluid lifecycle maintenance programme, Thermocare. Our expert engineers will work with you to improve accuracy when monitoring fluid, provide technical interventions when necessary, organise maintenance schedules and train staff.

How do I find out more?

Our engineers can help you to find the right heat transfer oils for plastics processing applications.

Call us on +44 (0)1785 760555 for more information

Application

The most popular high temperature, heat transfer fluid. Suitable for operation up to 345°C (653°F) and can pumped to -3°C (27°F) and delivers exceptional performance. Primary applications are chemical industries, plastics processing and biodiesel.

About Globaltherm® Syntec

  • Globaltherm® Syntec uses the hydrogenated terphenyls chemistry of the most popular high temperature liquid phase heat transfer fluid. No other heat transfer fluid delivers a higher degree of customer satisfaction.
  • Globaltherm® Syntec HTF is used in a wide variety of applications in systems all over the world and delivers ultimate performance to ensure your system is running at maximum capacity and optimum efficiency.

Find out more about the properties of Globaltherm Syntec

Contact us for more information on high temperature thermal oils

We provide advice on how to choose the most appropriate oil for your heat transfer applications and provide our customers with continued technical support.

Call us on +44 (0)1785 760555 for more information

Application

Globaltherm® Omnitech is a high performance synthetic heat transfer fluid designed to meet the demands of liquid or vapour phase systems and indirect heat transfer. The no.1 choice for concentrated solar power and thermal electricity applications, PET and plastics production and chemical industries.

About Globaltherm® Omnitech

Globaltherm® Omnitech is a synthetic heat transfer fluidwhich combines low viscosity and exceptional thermal stability for consistent performance.

  • Globaltherm® Omnitech is a diphenyl ether-biphenyl HTF mixture
  • The eutectic mixture of diphenyl oxide and biphenylgives this heat transfer fluid flexibility to perform in both vapour and liquid phases. It is miscible and interchangeable (for top-up or dilution purposes) with other similar mix thermal fluids.
  • Globaltherm Omnitech HTF has low viscosity (2.5 cst at 40°C [104°F])
  • This thermal fluid is excellent for use in heat transfer fluid systems which require very precise temperature control due its ability to operate as a vapour phase fluid
  • This heat transfer fluid is highly dependable
Product Operating Temperature 1000 Litre IBC 208 Litre barrel Bulk
Globaltherm® Omnitech (15°C – 400°C) 15°C to 400°C

Contact us for more information on high temperature thermal oils

We provide advice on how to choose the most appropriate oil for your heat transfer applications and provide our customers with continued technical support.

Call us on +44 (0)1785 760555 for more information

Application

Marlotherm® SH is a high performance dibenzyltoluene heat transfer fluid for use in closed loop, forced circulation heat transfer systems. Primary uses are chemical industries and plastics processing.

About Marlotherm® SH

Marlotherm® SH is recommended for use in the temperature range from 250°C (482°F) to 350°C (662°F), but can be used intermittently at film temperatures as high as 380°C (716°F).

  • Marlotherm® SH heat transfer fluid is non-corrosive
  • Marlotherm®  SH HTF can be used without being pressurised
  • This dibenzyltoluene heat transfer fluid can be used in systems requiring start-up temperatures as low as -5°C (23°F) without the need for heat tracing
  • Marlotherm® SH thermal fluid is thermally stable up to 300°C (572°F) and can be used for several years below this temperature without reducing performance
  • Low viscosity 17 cSt @ 40°C (104°F) with a pumping limit at -5°C (23°F) – making it the lowest in its fluid class
  • This thermal fluid has a high flash point 200°C – one of the highest in its fluid class
  • Marlotherm®  SH HTF has superior thermal stress resistance in the bulk outlet temperature range  from 60°C-350°C (140°F - 662°F)

Contact us for more information on high temperature thermal oils

We provide advice on how to choose the most appropriate oil for your heat transfer applications and provide our customers with continued technical support.

Call us on +44 (0)1785 760555 for more information

Application

Marlotherm® LH is a high performance benzyltoluene heat transfer fluid for use in closed loop, forced circulation heat transfer systems and can be used in liquid and vapour form. Used predominantly in Pharmaceutical industries and Plastic processing.

About Marlotherm® LH

Marlotherm® LH benzyltoluene HTF is recommended for use in the temperature range from -30°C (-22°F) to 280°C (536° F), but can be used intermittently at film temperatures as high as 380°C (716° F). It can also be used in pressurised systems up to 360°C (680°F).

  • Marlotherm® LH heat transfer fluid is non-corrosive
  • Marlotherm® LH can be used in the liquid or liquid/vapour phase due to its narrow boiling range of around 4°C (39°F)
  • This heat transfer fluid has low pour point and pumping 
limit -30°C (-22°F)
  • Marlotherm® LH HTF thermal fluid is thermally stable up to 300°C (572°F) and can be used for several years below this temperature without reducing performance
  • A thermal fluid with low viscosity for excellent heat transfer efficiency
  • Benzyl aromatic with excellent thermal stability
  • Marlotherm® LH HTF has a high auto-ignition temperature of 450°C (842°F)

Contact us for more information on high temperature thermal oils

We provide advice on how to choose the most appropriate oil for your heat transfer applications and provide our customers with continued technical support.

Call us on +44 (0)1785 760555 for more information

Application

Globaltherm® RP Heat transfer fluid is a heat transfer agent suitable for applications requiring single fluid heating and cooling including; oil and gas, heat recovery, plastics, polymers and styrene and chemical processing.

About Globaltherm® RP

  • Globaltherm® RP Heat transfer fluid is recommended for use in a temperature range up to a maximum bulk temperature of 660°F (350°C) and a maximum film temperature of 710°F (375°C).
  • Globaltherm® RP is a diaryl alkyl composition intended for use in applications that require liquid phase heat transfer.
  • Globaltherm® RP fluid can be used in non-pressurised systems, and is pumpable to 0°C (32°F).
  • Globaltherm® RP can be used in non-pressurized, liquid phase systems and has good low temperature properties, reducing the need for heat tracing.
  • Globaltherm® RP has a high flash point at 194°C (381°F) and delivers excellent thermal stability at the maximum use temperature.
  • Globaltherm® RP degrades primarily to low molecular weight products, therefore negating build-up of high molecular weight products that must be removed from the system.
  • Globaltherm® RP has a toxicity that is considered to be extremely low.
Product Operating Temperature 1000 Litre IBC 200kg barrel Bulk
Globaltherm® RP (-20°C – 350°C) -20°C to 350°C

Globaltherm RP properties

Contact us for more information on high temperature thermal oils

We provide advice on how to choose the most appropriate oil for your heat transfer applications and provide our customers with continued technical support.

Call us on +44 (0)1785 760555 for more information

Application

Globaltherm® HF Heat transfer fluid is a heat transfer agent suitable for applications requiring single fluid heating and cooling including; plastics processing, moulding, casting, asphalt, paint and chemicals.

About Globaltherm® HF

  • Globaltherm® HF heat transfer fluid’s flash point is one of the industry’s highest at 530°F (276˚C).
  • Not only does this heat transfer fluid have one of the highest flash points available it also contains a resilient blend of additives to ensure trouble-free service when managed correctly.
  • Globaltherm® HF heat transfer fluid delivers superior resistance to extreme oxidation and sludging found in many manufacturing environments, including plastics processing, molding, casting, asphalt, paint and chemicals.
  • This heat transfer fluid is environmentally friendly, non-toxic and non-hazardous and requires no special handling.
  • A superior high performance, energy efficient heat transfer fluid suitable for use in a variety of industrial processes.
Product Operating Temperature 1000 Litre IBC 208 Litre barrel Bulk
Globaltherm® HF (5°C – 338°C) 5°C to 338°C

Properties of Globaltherm® HF

Contact us for more information on high temperature thermal oils

We provide advice on how to choose the most appropriate oil for your heat transfer applications and provide our customers with continued technical support.

Call us on +44 (0)1785 760555 for more information