In car paint protection products, an increase in hardness often comes at the expense of transparency or an increase in application difficulty, and insufficient adhesion can lead to the peeling of the film layer after washing or being struck by stones. The mainstream car crystal coating products mostly use siloxane as the main component, although they can provide certain protective effects, there are upper limits in terms of hardness, density, and adhesion. The car crystal coating liquid 9970 uses special polysilazane as the core component, which crystallizes to form a silica film layer. The hardness is 5H, the adhesion is 0 level according to the scratch test, the visible light transmittance is >90%, and the water contact angle is 110°. It can provide a candidate solution for car paint that offers both protection, brightness enhancement, and self-cleaning effects.


Why do traditional car crystal coating products often fail to meet expectations in terms of hardness, adhesion, or brightness enhancement?


The hardness of the formed film layer after crystallization is insufficient, making it difficult to resist minor scratches caused by daily washing, sanding, and friction.


The adhesion to the car paint is limited, and it is prone to peeling after being impacted by high-pressure water jets during washing or during high-speed driving.


The transparency of the film layer is insufficient or the surface is rough, which affects the depth and glossiness of the car paint, especially the brightness enhancement effect on black car paint is not ideal.


The low hydrophobic angle leads to an unstable self-cleaning effect, and water stains and dirt are not easily washed away.


The uniformity of the film layer is poor, and it is sensitive to the application technique, prone to visual differences caused by uneven thickness.


First, determine at which stage the car crystal coating protection problem occurs.


Failure stage Possible causes Priority inspection direction
Minor scratches on the film layer Insufficient hardness after curing Placement time and environmental humidity during curing, film layer thickness
Edge翘up or peeling of the crystal coating layer Insufficient adhesion Whether the degreasing was thorough before construction， whether the vehicle was completely dry
Insignificant brightness enhancement of the coating layer Insufficient transparency or poor uniformity of the film layer Whether the application technique was cross-crooked， whether the film thickness was controlled
Decreased self-cleaning effect Insufficient film layer surface cleanliness or water seen within 24 hours after construction Static conditions after construction， surface cleanliness
Air bubbles or white spots appear after construction Non-uniform film layer curing Construction environmental humidity， whether water was contaminated
Comparison of IOTA9970 with mainstream car crystal coating products


Comparison item IOTA9970 Mainstream siloxane crystal coating wax/sealant
Core component Silicon nitride → SiO₂ Siloxane → Si-O-Si Natural wax/resin
Hardness 5H (Chinese pencil) 3-4H <2H
Adhesion (scratch test 0 level) Verify the firmness of the film layer's adhesion to the car paint Adhesion test needs to be conducted 1-2 days after construction
Transparency (>90%) Verify the brightness enhancement effect Need to observe the gloss improvement on black car paint
Water contact angle (110°) Verify the self-cleaning effect Hydrophobic angle is affected by application technique and surface cleanliness
IOTA9970 uses polysilazane as the film-forming main component， which crystallizes to form a protective layer rich in silica. Unlike the common siloxane crystal coatings in the market， it has higher crosslinking density and adhesion， and the film layer is more dense and compact.


What conditions need to be confirmed before selection and application?


Condition category Information to be confirmed
Car paint condition New car or car with scratches treated (scratches need to be polished first)
Construction environment Dry weather construction
Vehicle condition Degreased， cleaned， and surface completely dry
Application method Cross-crooked application with a sponge/glass cloth → flat with a dry towel
Curing conditions Initial curing after whole vehicle application for 2 hours
Curing period Avoid water contact within 24 hours
Which key indicators should be verified?


Verification items Primary function Not replaceable content
Hardness (5H) Verify the scratch resistance of the film layer Not indicating adhesion is qualified by hardness reaching the standard
Adhesion (scratch test 0 level) Verify the firmness of the film layer's adhesion to the car paint Adhesion test needs to be conducted 1-2 days after construction
Transparency (>90%) Verify the brightness enhancement effect Need to observe the gloss improvement on black car paint
Water contact angle (110°) Verify the self-cleaning effect Hydrophobic angle is affected by application technique and surface cleanliness
How to design the construction and verification plan for car crystal coating?


New cars do not require polishing; if there are scratches, polishing treatment must be completed first.


The vehicle is thoroughly cleaned with degreaser to ensure that the surface of the body is free of oil stains and completely dry.


Pour the crystal coating liquid onto a sponge or eyeglass cloth, and apply it in a cross pattern (once horizontally and once vertically) on the vehicle surface.


Car parts are constructed separately: it is recommended to do the front hood first, then smooth it with a dry towel about 1 minute later, and proceed to the doors, roof, and tailgate in sequence.


After the entire vehicle is treated, it should be left to stand in a clean place for 2 hours. The construction is initially completed.


Within 24 hours after the construction, do not wash the car or expose it to water; if you test with water, the residual water should be wiped dry after the test.


Common misunderstandings


It is possible to wash the car normally 2 hours after the construction: 2 hours is only the initial curing period, and it takes 24 hours after the construction for it to be ready for normal washing.


The water repellency effect can last until the membrane layer is completely worn away: The water repellency angle is related to the construction method and surface cleanliness; 110° is a typical value.


The construction effect on black paint surfaces is the same as on white paint surfaces: 9970 has a particularly prominent brightening effect on black car paint, while the effect may not be obvious on white paint surfaces.


The higher the membrane layer hardness, the better the wear resistance: 5H hardness is the result of a pencil hardness test, and the actual wear resistance is also affected by membrane thickness and curing conditions.


Recommended construction and curing steps


Confirm the condition of the car paint; if there are scratches, polishing must be done first.


Clean the vehicle body with degreaser to ensure it is completely dry.


Apply in a cross pattern in separate parts, and smooth it about 1 minute later.


After the entire vehicle is treated, leave it to stand for 2 hours.


Do not expose to water within 24 hours; do not drive in rainy weather.


If exposed to water, wipe the surface dry immediately.


FAQ


What are the main components of IOTA9970?
The main body of the product is a special polysilazane, which is different from the crystal coating products on the market that mainly contain siloxane. After crystallization, it forms a silica film layer.


What level of hardness can the film layer achieve after curing?
After being tested by Chinese pencils, the hardness of the film layer reaches 5H, which can effectively resist minor daily friction and car washing scratches.


What is the water contact angle?
The water contact angle is approximately 110°, which has a good water-repellent self-cleaning effect.


How long after construction can normal car washing be performed?
After construction, the film layer is initially cured after 2 hours, but normal car washing can only be performed 24 hours later.


How does this product enhance the brightness of black car paint?
Over 90% of transparency is achieved through optical refraction to enhance the depth of the paint surface, and its effect on brightening the gloss of black car paint is particularly prominent.


How is the adhesion?
The scratch test reaches level 0, indicating that the coating is closely bonded to the car paint and is not prone to peeling.