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DY-1020-01 Power battery Grade PVDF

short description:

DY-1020-01 PVDF is a high-viscosity Polyvinylidene fluoride resin prepared by suspension method and modified by copolymerization. The comonomer contains polar functional groups, which can improve the bonding performance between the active material, the metal pole piece and the polymer, and effectively reduce the dosage of the formulation. The products can be used in the production of high-capacity, high-rate, and high-cycle power batteries.


Product Detail

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Typital Properties

 

NO.

NAME OF INDEX

             Test method

 

UNIT

JSL-21

1

Appearance

Visual Observation

-

 

White powder,No visible impurity

2

Solubility

Visual Observation

-

Clear and transparent, no impurity

3

Particle Size

ISO 22412

um

≤110(D50)

4

Relative Density

GB/T 1033.1

g/cm3

1.75-1.77

5

Moisture Content

HG/T2902

Wt%

≤0.10

6

Rotary Viscosity

10.28gPVDF/100mlNMP,30℃

mPa.s

5000~10000

7

Melting Point

GB/T 19466.3

160-170

8

Thermal Decomposition Temperature

TGA

≥370

9

Weight-average Molecular Weight

GPCDMF

800000~1100000

10

Molecular Weight Distribution

GPCDMF

3.0~4.0

The index standard refers to T / FSI 027-2019, and the index data is only for customers' reference.

Instructions

Addition suggestions: Ternary systems NCM523NCM622NCM811NCA811):1.2-1.8%

LEP systems : 2.2-2.8%LMO systems1.3-1.7%LCO systems1.0-1.2%

(The amount of addition is adjusted according to the density and specific surface area of the positive electrode material.)

How to use: Stir at a high speed for 1-1.5 hours when the wet glue is used, then enter the pulping process after the PVDF is completely dissolved. Due to the large molecular weight of PVDF resin and slow dissolution rate, the stirring time can be increased. PVDF is added to the stirring tank in batches and the stirring temperature is increased to improve the dissolution rate.

Storage and Attention

PVDF Packaged in a two-layer polyethylene plastic bag. Products should be stored in clean, dry warehouses to prevent the introduction of impurities. This product is non-toxic and harmless at room temperature, but it should be noted that the processing temperature should not exceed 350 ℃, so as to prevent toxic gas from decomposition.


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