1. Product characteristics

HLN35 series powdered nitrile rubber is a modifier developed for PVC and other polymer materials. It has excellent compatibility with PVC resin and can improve oil resistance, cold resistance and aging resistance of products. Powdered nitrile rubber has the advantages of high dispersibility, easy handling, and particle refinement.

2. Main brands

HLN35 series products are powdered nitrile rubber with low Mooney viscosity, micro (semi) cross-linking and medium acrylonitrile content prepared by medium temperature polymerization, unique coagulation and powder forming. There are three grades, customers can rely on Choose your own formulation system and product requirements.

HLN35 series powdered nitrile rubber product index

3. Application advantages

3.1 Flexibility
As an elastomer, PNBR forms an "island" structure when blended with PVC, which significantly improves PVC flexibility.
3.2 Oil and solvent resistance
The high amount of -CN groups in PNBR can significantly improve the oil and solvent resistance of PVC.
3.3 Cold resistance
There is no flexible and elastic chain structure in the PVC molecule, so its performance at low temperature is poor. After adding PNBR elastomer, its low temperature resistance is improved.
3.4 Excellent insulation.
When the PVC is used alone, the insulation is not very satisfactory. After adding PNBR, the electrical resistance of the product can be improved.
3.5 Wear resistance
PNBR can significantly improve the wear resistance of PVC and extend the service life of the product.
3.6 Slip resistance
PNBR can significantly improve the slip resistance of PVC. PNBR/PVC is comparable to thermoplastic rubber (TPR) in anti-slip properties.
3.7 Plasticizer durability
Most of the plasticizers used in soft PVC are low-molecular substances. The products are prone to problems such as oil spray and blooming during use. After adding PNBR, the elasticity of the product can be increased and the amount of plasticizer can be reduced. Attract plasticizers and reduce the migration rate of plastics.
3.8 Melt viscosity stability
The melt viscosity of PNBR/PVC is relatively stable over a wide temperature range, relaxing the processing conditions of the product.

4. Application process

The production of PVC products mainly consists of three steps of mixing, plasticizing granulation and forming. The process flow is as shown in the figure: