In the chemical and sealant industry, using established external formulations can reduce development costs and shorten time to market. However, long-term dependence on external technology often leads to product homogenization and limits a manufacturer's ability to respond quickly to new technical requirements.

From the beginning, Jiarun chose a different path: building its own R&D Technology Center and keeping formulation development, performance validation and product optimization within the company.

A Complete R&D Loop From Raw Materials to Finished Products

Jiarun's in-house laboratory supports key stages including raw material screening, reaction monitoring, formulation development and finished-product performance testing.Development does not begin only after a sealant has been produced. It starts with understanding the raw materials themselves.

Differences in raw material batches, reactivity, stability and compatibility with the formulation system can influence curing speed, adhesion, elasticity and long-term durability.By performing these evaluations internally, Jiarun's engineers can better understand how formulation changes affect final product performance and identify technical variables more efficiently when problems arise.

Pilot Scale-Up: Bridging the Gap Between the Laboratory and Mass Production

One of the major challenges in polyurethane sealant development is that a formulation that performs well in a laboratory does not always behave identically when transferred to industrial-scale production.As production volume increases, factors such as mixing efficiency, processing temperature, material addition sequence, vacuum conditions, heat transfer and reaction time may all change.

These variables can directly affect product consistency.To address this gap, Jiarun operates an independent pilot-scale production workshop that serves as a bridge between laboratory trials and full-scale manufacturing.After a new formulation completes its initial laboratory validation, it can move into pilot production. Engineers then evaluate the formulation under conditions that more closely resemble actual manufacturing.

Catalyst ratios, prepolymer processing parameters, reaction temperatures and production conditions can be adjusted repeatedly until the formulation maintains stable performance after scale-up.Only after this stage of verification does the formulation become ready for further transition toward mass production.

True Formulation Freedom Comes From Controlling Performance Variables

The value of independent R&D is not simply having proprietary formulations.More importantly, it gives a manufacturer the ability to actively adjust product performance according to different markets, climates and applications.

For example:

• Hot and humid regions may require greater attention to skin formation time, curing behavior and humidity stability.
• High-UV environments may place stronger demands on long-term weather resistance and aging performance.
• Markets with stricter environmental requirements may focus more heavily on VOC control and environmental compliance.
• Industrial assembly applications may require higher bonding strength, specific elasticity or a controlled curing window.

With internal formulation capabilities, Jiarun can adjust products around these performance targets and verify the results through comparative testing.

This is not a matter of simply changing dilution ratios.Polyurethane formulation development involves balancing prepolymers, catalysts, fillers, plasticizing systems and functional additives. Changes to one part of the system can affect curing behavior, viscosity, mechanical properties and long-term stability.Every adjustment therefore needs to be tested as part of the complete chemical system.

Developing Products Through Data, Not Guesswork

Formulation development is rarely a one-step process.A new sealant system may require multiple rounds of formulation changes, testing and failed experiments before the correct balance between performance characteristics is achieved.

Jiarun continues to build an internal technical database that records experimental results, formulation changes, performance data and application feedback.These records support both current development work and future product optimization.

When engineers encounter a new substrate, application environment or performance requirement, historical development data can help narrow the testing range, improve development efficiency and reduce unnecessary repetition.Over time, every successful test—and every unsuccessful one—becomes part of the company's technical knowledge base.

Moving From Manufacturing Products to Understanding Materials

A real technical barrier is not created simply by purchasing more equipment or owning one successful formulation.It is built through accumulated material knowledge, experimental data, production experience and repeated validation under real application conditions.Through its in-house laboratory, pilot-scale development system and internal technical database, Jiarun continues to build an integrated R&D process covering:

Raw Material Analysis → Formulation Development → Pilot Scale-Up → Performance Verification → Mass Production Optimization

This system allows product development to move beyond simply reproducing established formulations.Instead, key properties such as bonding strength, curing speed, elasticity, weather resistance and chemical resistance can be adjusted according to actual customer and application requirements.

For Jiarun, “formulation freedom” does not mean having an unlimited number of formulas.It means having the technical ability to understand the problem, control the variables and verify the result.And that capability cannot be built overnight.It comes from repeated testing, continuous refinement and long-term technical accumulation.