Aramid/Kevlar Fast Helmet Military Bulletproof Helmet with High Ballistic Performance

Aramid/Kevlar Fast Helmet Military Bulletproof Helmet with High Ballistic Performance

PTMEG based polyurethane prepolymer are recommended for applications where parts undergo dynamic stress, etc, they incur lower heat build-up.

Product Introduction

Looking forward to the future, the company is constantly committed to the adjustment of product structure, emphasizing on energy saving, energy saving and emission reduction through technological progress, strengthening quality, safety, and environmental protection work, focusing on improving the construction of the PU Rubber Rod, MDI Two Componment PTMEG Type Casting PU, PU Color Stick industry, and using the spirit of hard work to create the future glory of the company. We will always adhere to innovation-driven, keep pace with the times, achieve one new goal after another, and continue to advance in leaps and bounds and develop in transcendence. We aim to protect the life safety and health of our employees and create a safe and harmonious environment in the whole company. Passion is the spiritual pursuit of continuous creation, potential and value, and we hope that every employee will be passionate about their work. Internally, our company is committed to unity and harmony, and our employees are united in their efforts.

Product Features

PTMEG 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,and MDI based products have lower isocyanate odour than similar TDI types and have superior hydrolysis resistance and often have higher resilience.

With high NCO content and catalyst intervention, the reaction rate of MDI feedstock is 1-2 times faster than that of TDI series feedstock.Because of the high resilience and flexibility, MDI series products are much better than TDI series products in the application effect of sieve plate. The improvement of elasticity is helpful to improve the impact wear resistance and self-cleaning effect of products.

Because of the high activity of MDI, the application temperature of MDI raw materials is much lower than that of TDI series raw materials in order to prevent the degradation of physical properties of final products caused by self-polymerization of raw materials. The thermal stability and temperature resistance of MDI materials are lower than that of TDI series. The main reason is that the crystallinity and temperature resistance of MOCA, the basic material of TDI series, are better than those of MDI chain extender BDO.


Specifications

Type

HJ2285M

HJ2290M

HJ2295M

NCO content /%

6.0±0.2

7.5±0.2

8.8±0.2

Appearance in 20℃

PTMEG type,white solid

1,4-BD dosage (100gPUP )/g

6.2

7.7

9.1

Viscosity(85℃)/mPa·s

1300-1500

900-1100

750-850

Mixing temperature/℃(PUP/1,4BD)

85/40

85/40

80/40

Catalyst addition dosage (1000gPUP)/g

3-10 (the addition amount varies according to the gel time requirement)

Gel time /min

8—10

5—7

4—6

Vulcanization Time (100-110℃)/h

24-48

24-48

24-48

Hardness(shore A)

85±2

90±2

95±2

Tensile strength/MPa

34-39

37-42

43-48

100% Modulus /MPa

4—6

5—8

10—14

300%Modulus /MPa

10—15

13—18

20—30

Elongation at break/ %

360-460

560-660

440-540

Tear strength(KN/m)

60-70

95-105

105-115

Rebound/ %

48-50

46-48

45-47

Specific gravity(25℃)(g/ cm3

1.11

1.11

1.12

DIN Abrasion loss /mm³

≤38

≤35

≤32

Since our establishment, we have been adhering to the business philosophy of 'survive by quality and development by reputation', using first-class equipment, and through strict procurement, process control, and quality control procedures to professionally create trustworthy Aramid/Kevlar Fast Helmet Military Bulletproof Helmet with High Ballistic Performance for you. We comprehensively shape the corporate quality of "innovation, integrity, service and quality". Our responsibility culture is to fulfill our political, social and economic responsibilities.

Hot Tags: mdi two componment ptmeg type casting pu, China, manufacturers, factory, buy, PU RUBBER SHEET, PU Rubber Rod, Casting Polyurethane Prepolymer, 3 Crystal Water Zinc Borate, MDI System Casting Polyurethane Elastomer, PTMEG Based Casting Polyurethane Prepolymer

[[ProKeywords]]
You Might Also Like