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 Home  > Product Information > RENATUS(R) PET


INTRODUCING RENATUS(R) PET RH030 AND RH045


Introducing RENATUS® PET RH030 and RH045
New grades for automotive exterior components, with superior mechanical
properties, appearance, and weather resistance



1. Introduction

On April 1, 2021, we changed our trademark for PET resin products from FR-PET®
to RENATUS®. With the needs and expectations of the market and our customers in
mind, we are setting out on a new beginning in PET at Polyplastics as a strong
pillar of our business portfolio.

We are now releasing two new grades of RENATUS® PET with superior weather
resistance, RH030 and RH045. In addition to superior mechanical properties and
surface appearance, they also effectively reduce whitening on the surface of
molded articles in environments susceptible to the effects of weathering (Table
1), making them ideally suited for applications such as automotive exterior
components (Figure 1).


Figure 1 : Anticipated applications


 

Table 1 : Attributes of RENATUS® PET RH030/RH045 in automotive exterior
components

Parameter Unit Mold temperature Mechanical properties Weather resistance
Appearance Molding cycle PBT PBT-GF30/GF45 60℃ ○ × × ◎ 140℃ ○ ○ ○ ○ PET Existing
grade
PET-GF30/GF45

140℃

◎ ○ ◎ ○ RH030/RH045 140℃ ◎ ◎ ◎ ○



2. Weather resistance

Here we will share the results of weather resistance testing using Sunshine
Weather Meter (open frame carbon arc weather meter) which we performed on flat
plate test pieces of RH030, RH045, and products from other companies. Figure 2
shows comparisons of test piece surface color in accelerated weather resistance
testing (L* (+light ⇔ -dark), a* (+red ⇔ -green), and b* (+yellow ⇔ -blue)).
Looking at L* which is an index for brightness, we can see that our materials
maintain lower values than those of competitors, indicating that whitening is
being reduced.

Figure 3 shows photos of the appearance of the test pieces for which L* was
measured in Figure 2. After weather resistance testing using Sunshine Weather
Meter (3,000 hours), we can visually verify that Polyplastics materials show
reduced whitening compared to the materials of other companies.


* Testing standards: JIS D0205 / WAN-1S, black panel temperature: 63±3℃

Figure 2 : Color evaluation on the appearance of test pieces after weather
resistance testing using Sunshine Weather Meter



Accelerated weather
resistance testing PET-GF30 PET-GF45 RH030 Competitor materials RH045 Competitor
materials Before testing

After testing

(3,000 hrs.)

Figure 3 : Comparison of test piece appearance before and after accelerated
weather resistance testing using Sunshine Weather Meter



3. Superior appearance

Resin typically has glass fibers added to make it stronger, but this has a
negative effect on the surface appearance of molded articles. RH030 and RH045
are also glass fiber reinforced grades, but they can still produce molded
articles with good surface appearance because they have superior mold
transferability during molding.

Figure 4 compares gloss on the surface of molded test pieces. Compared to
standard grade PBT-GF30, RH045 (PET-GF45) produces higher surface gloss even
though it has a large amount of glass fibers added.


Figure 4 : Gloss of the surface of molded test pieces



4. High mechanical properties

PET typically has superior mechanical properties compared to PBT. Figure 5
compares PBT and PET with the same amount of glass fibers added. We can see that
RH030 and RH045 have higher mechanical properties of tensile strength, flexural
modulus, and deflection temperature under load compared to PBT with the same
amount of glass fibers added.


Figure 5 : Comparison of the mechanical properties of PBT and PET



5. Conclusion

RH030 and RH045 are high-strength, high-stiffness PET glass fiber reinforced
grades with heightened weather resistance. They maintain their jet blackness
even when exposed outdoors or in other similar environments for extended periods
of time, making them ideally suited for automotive exterior components.

At Polyplastics, we will continue making advancements in development to be able
to offer grades for various market needs and usage applications.



 Technical data sheet is available online:

  RENATUS® PET   ◆Grade Compositions

 For inquiries about our technologies
 and materials, please contact us via:

  ◆Polyplastics Group Representative   ◆WEB Inquiry




15th November 2021


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