Language
- 中文版
- English

Technical Q&A

FAQ

Home page

Insufficient impact strength

Release Date:

2023-11-07

Possible causes:

(1) Improper resin selection: Insufficient flexibility or low molecular weight of the resin itself results in high brittleness after film formation.

(2) Improper reactivity or dosage of the curing agent: When the reactivity of the curing agent is mismatched with that of the resin, or when the dosage does not achieve the optimal stoichiometric ratio, the crosslink density may become excessively high (resulting in brittleness) or insufficiently high (leading to weak cohesion), thereby reducing the coating’s impact resistance.

(3) Poor system compatibility: Inadequate compatibility between the resin and the curing agent leads to microphase separation within the coating, creating stress concentration points.

(4) Curing temperature conditions not met

Proposed solution:

(1) Adjust the process: reduce the curing temperature by 10–15°C or shorten the baking time by 5–10 minutes;

(2) Formulation adjustment: Add Huanyu HY216/217 curing accelerator.

None

Lack of three-dimensional texture in the wrinkles

Insufficient impact strength

2023-11-07

Lack of three-dimensional texture in the wrinkles

2026-03-20

Silver powder is unevenly dispersed.

2026-03-20