Status: Need is Closed

Switchable Thermochromic Coatings that Block Light Transmission at High Temperatures

Request Number

Point of Contact

Haier seeks partners with thermochromic materials that change from high to low light transmission at temperatures above 80°C.


Haier is a manufacturer of solar water heating systems. During summer these systems have efficient collection of solar radiation. With low water usage this can result in overheating of the water, which creates a risk of contact with hot water, can accelerate ageing of system components and may reduce the lifetime and reliability of the system.

Haier Group Open Innovation Center invites proposals from companies (large or small and medium enterprises), inventors or researchers with thermochromic materials that could be used on the surface of solar collectors to effectively block light transmission at temperatures above 80°C, whilst allowing effective light capture at lower water temperatures.

Key success Criteria

Successful materials will:

  • Have high light transmittance at temperatures below 80°C
  • Change colour at temperatures at or above 80°C to provide a coating with low light transmittance
  • Revert to high light transmittance at temperatures below 80°C
  • Be stable at temperatures of 100°C
  • Have good weather and sunlight stability with decay of performance or material of less than 2% per year


Possible Approaches

Possible approaches include:

  • Tunable thermochromic materials suitable for use in coatings


Approaches not of Interest

The following technologies or approaches are not of interest:

  • Materials that cannot be made into coatings of finals.
  • Materials or coating procedures that cannot easily be used in mass production
Due Date
Sep 29, 2016
Items to be submitted

Haier prefers to work with partners that have demonstrated expertise in the areas of interest and the ability to rapidly provide proof-of-concept data and prototyping of solutions (3-6 months). Collaboration can involve supply agreements, technology licensing or joint development agreements.

Financial support for testing and development will be negotiated based on specific performance targets agreed between both parties. For selected collaborators Haier may provide access to current designs, samples, test equipment and testing facilities. Technologies will need to satisfy manufacturability, material cost and ease of use assessments to progress from the concept stage.

We are looking for concise non-confidential proposals, statements of expertise or other enquiries if your expertise fits our needs. To Respond, please use the Respond button to submit your proposal. Please note that only non-confidential information can be accepted.   Your NineSights community profile should contain all required information in order to provide us with appropriate contact information for your responses.

For all responses please indicate your preferred collaboration approach (eg supply, design consultancy, joint development, research) and capabilities (eg research, concepts, prototype, small scale manufacture, large scale manufacture).

If you have any questions, please feel free to leave a comment on this posting, post in the Haier Featured Gallery, or the NineSights Community Help and Feedback areas.

Client Point of Contact

Super User
Gallery Moderator(s)
Kevin Andrews
Request Number
Preferred Collaboration Types
Area of Interest