3M™ Glass Bubbles K1

3M™ Glass Bubbles Type K1 are specially formulated for a high strength-to-weight ratio. This allows greater survivability under many demanding processing conditions, such as injection molding. They also produce stable voids, which results in low thermal conductivity and a low dielectric constant. 3M glass bubbles are available in a variety of sizes and grades to help you meet your product and processing requirements.

Principal: 3M Advanced Materials

Functions: Filler

Chemical Family: Borosilicates

Processing Methods: Casting, Injection Molding, Molding, Spraying

End Uses: Mining Applications

Enhanced TDS

Identification & Functionality

Blend
No
Chemical Family
Chemical Name
Function
Filler
Plastics & Elastomers Functions
Product Code
MITM00056
Single Ingredient
Yes
Synonyms
Glass, oxide, chemicals, Oxide glass chemicals, Glass Fiber
Technologies
Product Families

Features & Benefits

Applications & Uses

Properties

Physical Form

Technical Details & Test Data

Technical Data

3M™ Glass Bubbles Type K1 remain free flowing for at least one year from the date of shipment if stored in the original, unopened container in the minimum storage conditions of an unheated warehouse.

Packaging & Availability

Packaging Type
Product Packaging

3M™ Glass Bubbles Type K1 will be packaged in suitable containers to help prevent damage during normal handling and shipping. Each container will be labeled with:

  1. Name of manufacturer
  2. Type of 3M glass bubbles
  3. Lot number
  4. Quantity in pounds

 Small Box (10 Cubic ft.)
A single corrugated box with a plastic liner. All boxes are banded together and to the wooden pallet. 4 boxes per pallet.

  • Each box inside diameter is 22 in. × 19 in. × 39 in.
  • Pallet size is 42 in. × 48 in.

Large Box (50 Cubic ft.)*
A single corrugated box with a plastic liner. Top enclosed with interlocking double cover banded. Bottom is normal box closure, entire box banded to wooden pallet.

  • Each box inside diameter is 48 in. × 42 in. × 44 in. Overall
  • load size is 483/4 in. × 423/4 in. × 50 in. including pallet.
  • Pallet size is 42 in. × 48 in.

*S60 and S60HS large boxes are 38 cubic ft.

 Box Weights   Small Box     Large Box*    

Truckload Large Box* 44 Pallets      

40 lb. 210 lb. 9240 lb.

*Box weights may vary due to manufacturing tolerances on each product.

Storage & Handling

Storage Conditions

To help ensure ease of storage and handling while maintaining free flowing properties, 3M™ Glass Bubbles Type K1 have been made from a chemically stable glass and are packaged in a heavy-duty polyethylene bag within a cardboard container.

Minimum storage conditions should be unopened cartons in an unheated warehouse.

Under high humidity conditions with an ambient temperature cycling over a wide range, moisture can be drawn into the bag as the temperature drops and the air contracts. The result may be moisture condensation within the bag. Extended exposure to these conditions may result in “caking” of the 3M™ Glass Bubbles Type K1 to various degrees. To minimize the potential for “caking” and prolong the storage life, the following suggestions are made:

  1. Carefully re-tie open bags after use.
  2. If the polyethylene bag is punctured during shipping or handling, use this bag as soon as possible, patch the hole, or insert the contents into an undamaged bag.
  3. During humid summer months, store in the driest, coolest space available.
  4. If good storage conditions are unavailable, carry a minimum inventory, and process on a first in/first out basis.

Dusting problems that may occur while handling and processing can be minimized by the following procedures:

  1. For eye protection wear chemical safety goggles. For respiratory system protection wear an appropriate NIOSH/ MSHA approved respirator. (For additional information about personal protective equipment, refer to Material Safety Data Sheet.)
  2. Use appropriate ventilation in the work area.
  3. Pneumatic conveyor systems have been used successfully to transport 3Mᵀᴹ Glass Bubbles without dusting from shipping containers to batch mixing equipment. Static eliminators should be used to help prevent static charges. Diaphragm pumps have been used to successfully convey 3M™ Glass Bubbles Type K1. Vendors should be consulted for specific recommendations.

3M™ Glass Bubbles Type K1 breakage may occur if the product is improperly processed. To minimize breakage, avoid high shear processes such as high speed Cowles Dissolvers, point contact shear such as gear pumps or 3-roll mills, and processing pressures above the strength test pressure for each product.

Other

Alkalinity
max. 0.5 meq/g
Appearance
White to the unaided eye
Color (SDS)
White
Density
0.1-0.14 g/cm³
Density (SDS)
0.1-0.6 g/cm³
Dielectric Constant
1.2-1.7
Isostatic Crush Strength
250.0 psi
Item Number
Odor (SDS)
Odorless
Oil Absorption
0.2-0.6 g/cm³
Particle Size
115.0 µm
Particle Size
30.0 µm
Particle Size
65.0 µm
Particle Size
120.0 µm
Principal
Softening Point (SDS)
min. 600.0 °C
Specific Gravity (SDS)
0.1-0.6
Thermal Conductivity
0.047 W/m·K
Volatile Content
max. 0.5 %(W/W)
Volatile Content (SDS)
max. 0.5 %(W/W)
pH
9.1-9.9
Thermal Properties
ValueUnitsTest Method / Conditions
Thermal Conductivity0.047 W/m·KW/m·Kat 21°C
Chemical Properties
ValueUnitsTest Method / Conditions
Alkalinitymax. 0.5 meq/gmeq/g
pH9.1-9.9-pH Meter 5% water
Electrical Properties
ValueUnitsTest Method / Conditions
Dielectric Constant1.2-1.7-at 100 MHz, based on theoretical calculations
Mechanical Properties
ValueUnitsTest Method / Conditions
Isostatic Crush Strength250.0 psipsiIsostatic Crush Strength, 80% Minimum Fractional Survival, 90% Target Fractional Survival
Physical Properties
ValueUnitsTest Method / Conditions
Density0.1-0.14 g/cm³g/cm³
Oil Absorption0.2-0.6 g/cm³g/cm³ASTM D281
Particle Size115.0 µmµmat 90%
Particle Size30.0 µmµmInternal Method 10th%
Particle Size65.0 µmµmInternal Method at 50% solution
Particle Size120.0 µmµmInternal Method top size
Material Composition
ValueUnitsTest Method / Conditions
Volatile Contentmax. 0.5 %(W/W)%(W/W)
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Density (SDS)0.1-0.6 g/cm³g/cm³
Softening Point (SDS)min. 600.0 °C°C
Specific Gravity (SDS)0.1-0.6-
Volatile Content (SDS)max. 0.5 %(W/W)%(W/W)