Qingdao Hengke Fine Chemicals Industrial Co., Ltd.
Main products:Ethyl Maltol,MOCA,PAM,Ascorbic Acid,Vitamin E/A,Xanthan Gum,Food Additive,Textile Auxiliary,Softer Flake,CMC,Cinnamic Aldehyde
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  • Contact Person : Mr. Zheng David
  • Company Name : Qingdao Hengke Fine Chemicals Industrial Co., Ltd.
  • Tel : 86-0532-83670001, 83670002
  • Fax : 86-0532-83670003
  • Address : Shandong,Qingdao,room 2403, Liangchenmeijing ,111#shandong road, Qingdao ,China
  • Country/Region : China

Casting Polyurethane prepolymer raw materials

Casting Polyurethane prepolymer raw materials
Product Detailed
suitable for dynamic applications.

Casting Polyurethane

 1.Propertities:

--High tensile strength

--Good abrasion resistance

--High resilience

--Good behaviour at low temperature

--Good resistance to hydrolysis(water, acid, and base) and to micro-organisms.

2.Usage:

--Suitable for dynamic applications.

--Large variety of applications such as industrial rolls,castors wheels,cushion pads, springs, hydrocyclones, seals…

3.Characteristics:

Item

Unit

Material A

Material B

Appearance at room temperature

23°C

Transparent Yellowish liquid

Colorless Transparent liquid

Viscosity of Prepolymer

mPa.s/75°C

300±100

300±100

4. Instruction:

This instruction is suitable for Double components CPU DHK 280 A/B

A:B=100:100.

(1)Put A and B into the material tank of the machine,temperature is controlled at 70°C,vacuumized ready for use.

(2)Mix material A and B then cast A and B into the ready mould, temperature of mould should be about 90°C.

(3) Demoulding after 25 minutes.

(4) Vulcanizing 6-10 hours to reach the best function. Otherwise, it takes nearly one week at room temperature to reach the same effect.

Note: Both hand casting and machine casting are suitable for this product.

5. Properties of the finished product

Item

Unit

Standard

Hardness

Shore A

80±2

Appearance

Slightly yellowish transparent elastomer

Relative density

g/cm3 25°C

1.21

6. Attention:

(1) Prepolymer should be kept in low-temperature and dry place. Material B should be heated within 3hours in high temperature (above 75°C).

(2)Prepolymer should be finished as soon as possible.

(3) Colorant is advised to be added into material A, and the content of water in material A should be less than 0.1%.  

Casting Polyurethane prepolymer raw materials



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