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Polyurethane Grommet for Food Industry as Buffering Pad

Polyurethane Grommet for Food Industry as Buffering Pad

They also have advantages in high resilience, low temperature performance and resistance to water attack(hydrolysis). Polyethers also have lower viscosity and specific gravity.

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Product Introduction

We are committed to providing customized products of 3 Crystal Water Zinc Borate, PU Tube and Pipe, Anhydrous Zinc Borate for customers in different industries, offering professional, rapid and one-stop service. Enterprise vision is restricted and influenced by enterprise mission. It can be said that what kind of enterprise mission determines what kind of enterprise common vision. Our company has always adhered to the tenet of clear direction, continuous innovation, staying ahead, multi-party cooperation, and mutual benefit. We will spare no effort to strive for perfection and accelerate to become a world-class enterprise.

Polyether based Casting Polyurethane prepolymer

1.Polyether based polyurethane prepolymer are recommended for applications where parts undergo dynamic stress, etc, they incur lower heat build-up. They also have advantages in high resilience, low temperature performance and resistance to water attack(hydrolysis). Polyethers also have lower viscosity and specific gravity.

2. Specifications,Application and operation details


PPG/TDI system Casting Polyurethane prepolymer

Item

Type

HJ-1880

HJ-1885

HJ-1890

HJ-1895

NCO% Content

3.7±0.2

4.0±0.2

5.0±0.2

6.2±0.2

Density 25℃/(g/cm³)

1.10

1.10

1.10

1.10

Viscosity 80℃/mpa·s

500-700

500-700

400-600

150-200

Appearance at 25℃

Colorless transparent liquid

Mix Temperature ℃

Prepolymer /Moca

80℃/115℃

80℃/115℃

75℃/115℃

75℃/115℃

Gel Time /min

8-12

6-8

3-5

2-4

Vulcanization Time (h)

25-16

25-16

25-16

25-16

Physical Properties

Hardness (Shore A)

80±2

85±2

90±2

95±2

Tensile Strength (Mpa)

12-15

14-18

20-24

22-26

100% Modulus (Mpa)

7-8

8-9

10-11

11-12

300% Modulus (Mpa)

--

11-12

16-17

20-21

Elongation at Break (%)

260-320

300-400

340-420

350-420

Tear Strength (KN/m)

50-55

65-75

80-90

85-95

Compression permanent deformation %

6-8

6-8

4-6

4-6

DIN Abrasion loss（mm³）

≤160

≤150

≤140

≤130

Resilience %/25℃

20-24

19-22

18-20

16-18

- Product application: Rod and bar, sheet and plate, seal, drag roller, caster, grinder lining, pipe lining, miscellaneous parts and other products.

- Operation details: After vacuum degasing at 75-85 ℃, the prepolymer is mixed with melted MOCA for casting and vulcanization. It is suitable for manual and mechanical operation.

- Storage: Store in a cool and dry place and use up as soon as possible after opening; If it cannot be used up at one time, it shall be sealed with nitrogen; The second opening needs to be used for defoaming, and the original storage period is six months.

- Packing: 20kg or 200kg iron drum

We have accumulated rich experience and good reputation in years of serving customers, which making us a reliable Polyurethane Grommet for Food Industry as Buffering Pad supplier to clients from countries over the world. Our target is that where there are sales, there are service personnels, which may solve the customer worries. We will always take high-level, high-quality, high-tech, and high-quality, high- scale pioneering spirit to provide more, newer and better products to meet demands of clients. Our company insists on the strategic idea of "win-win" with employees and strives to create a good environment for individuals and organizations to grow together and build a broad stage for the development of talents.

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