The quality of PP sheet can be judged from many aspects. So what is the purchase standard of PP sheet?
From the physical performance to analyze
High-quality PP sheets should have excellent physical properties, and also have many indicators, such as odorless, non-toxic, waxy, insoluble in general solvents, low absorption, and excellent electrical insulation properties. Low density, good toughness, good dielectric insulation. Low absorption rate. Water vapor permeability is low. Good chemical stability. Anti-Japanese War Province.
Observe the appearance
The inspection of PP sheet appearance mainly includes sheet flatness, color uniformity, surface finish, color difference, insufficient angle, area, thickness, etc. Generally speaking, good-quality sheets can reach a high level in these indicators.
What is the difference between PP sheet and PVC sheet?
1. Color difference:
PP material cannot be transparent. Generally, primary color (natural color of PP texture), beige gray, self-white, etc. are used. PVC has rich colors, including dark gray, light gray, beige, transparent and so on.
2. Weight difference:
PP sheet has a lower density than PVC sheet, PVC has a higher density, and PVC is heavy. The density of PP sheet is generally 0.93, the density of PVC sheet: 1.58-1.6, and the density of transparent PVC sheet: 1.4.
3. Acid-base tolerance:
The acid and alkali resistance of PVC sheet is better than that of PP sheet, but its texture is relatively brittle and hard, it is resistant to ultraviolet radiation, can endure climate change for a long time, is non-flammable, and has slight toxicity. However, PP sheet does not block ultraviolet rays, and it will change color when exposed to it for a long time.
4. Temperature difference:
The temperature rise range of PP is 0 ~ 80 degrees Celsius, and the range of PVC is 0 ~ 60 degrees Celsius.
5. Scope of application:
PPsheetis mainly used in acid and alkali resistant equipment, environmental protection equipment, waste gas, waste water treatment equipment, washing tower, clean room, semiconductor factory and related industrial equipment, among which PP thick sheets widely used in stamping plate, stamping plate, etc.
Post time: Feb-21-2023