SURECEL 445 FOAM CELL PROMOTER

Transcription

1 SURECEL 445 FOAM CELL PROMOTER For the European Region 1

2 SURECEL Foam Cell Promoters A next-generation processing aid for foamed PVC High molecular weight acrylic polymers: 1. Full acrylic monomers composition 2. Narrow MW Distribution 3. High Miscibility in PVC Resulting foam properties: 1. Excellent closed-cell structure and thickness control 2. Culminating in low foam density 3. Low surface roughness 2

3 SURECEL Foam Cell Promoters A New Approach to Foam Cell Control Fraction Melt strength too low to hold foam bubbles MW too high low melt flow with Screw memory Low Molecular Weight High SURECEL Foam Cell Promoters: Narrower MW Distribution and high in-pvc miscibility / compatibility for enhanced foaming characteristics Conventional Processing Aids: Ultra high MW may prohibit melt flow and result in surface imperfection Typically, low MW doesn t provide sufficient melt strength to stabilize foam voids 3

4 Gelation Time with SURECEL 445 Promoter SURECEL 445 Foam Cell Promoter has greater miscibility in the PVC matrix allowing for faster gelation time compared to competitive processing aids SURECEL 445 Comp PA1 Comp PA2 Torque N.m Time s 4

5 Melt Expansion SURECEL 445 Foam Cell Promoter helps ensure high melt expansion at most shear rates and blowing agent loading, thanks to its higher (better) contribution to melt elasticity and melt strength. Hot Expansion % 3. SURECEL 445 Low Shear SURECEL 445 High Shear Comp PA1 Low Shear Comp PA1 High Shear Blowing Agent Addition Level (phr) 5

6 Percent Elastic Recovery During Cooling 17. Percent Elastic Recovery SURECEL 445 Comp PA1 Lower (better) elastic recovery after foaming with SURECEL 445 Foam Cell Promoter during cooling phase: Better control of the dimensions of the final product over a range of blowing agent addition levels Blowing Agent Addition Level (phr) 6

7 Foam Density. Density -- SURECEL 445 Low Shear rate -- SURECEL 445 High Shear rate -- Comp PA1 Low Shear rate -- Comp PA1 High Shear rate SURECEL 445 Foam Cell Promoter is designed to: Generate high melt strength Improve the gas containment limit of the melt Foam density, g/cc. Provide a lower foam density over a range of shear rates and blowing agent addition levels Blowing Agent Addition Level, phr 7

8 Cell Size Distribution & Shear Rate Relationship.4phr rpm.7 phr rpm 1. phr rpm SURECEL 445 Foam Cell Promoter is designed to offer:.4phr rpm.7 phr rpm 1. phr rpm Excellent cell structure over a range of blowing agent concentrations Smaller cells, narrower cell size distribution at high shear rates.4phr rpm.7 phr rpm 1. phr rpm

9 Closed-Cell Structure SURECEL 445 Foam Cell Promoter is designed to offer: A closed-cell structure at a wide range of blowing agent addition levels and shear rates 9

10 Density & Blowing Agent Concentration Relationship Density g/cc Production of top quality foamed PVC products calls for the ability to control: Swelling Foaming Cell size and size-distribution under different shear and strain rate conditions.5.45 Screw Speed rpm With SURECEL 445 Foam Cell Promoter, this translates into lower foam-density at high screw speed and blowing agent concentration.

11 Next-Generation Processing Aid Technology SURECEL 445 Foam Cell Promoter: Excellent cell structure with small and consistent cells throughout the width of foam sheet or board Very high expansion Excellent thickness control Can deliver the requested density at lower cost Winner of the SILVER Innovation Award from the SolVin Innovations in PVC competition. 11

12 SURECEL TECHNOLOGY SOLVIN SILVER AWARD FOR PVC INNOVATION DEMONSTRATING IMAGINATION WITHOUT LIMITS 12

13 NOTICE: If products are described as experimental or developmental : (1) product specifications may not be fully determined; (2) analysis of hazards and caution in handling and use are required; (3) there is greater potential for Dow to change specifications and/or discontinue production; and (4) although Dow may from time to time provide samples of such products, Dow is not obligated to supply or otherwise commercialize such products for any use or application whatsoever. NOTICE: No freedom from infringement of any patent owned by Dow or others is to be inferred. Because use conditions and applicable laws may differ from one location to another and may change with time, Customer is responsible for determining whether products and the information in this document are appropriate for Customer's use and for ensuring that Customer's workplace and disposal practices are in compliance with applicable laws and other government enactments. The product shown in this literature may not be available for sale and/or available in all geographies where Dow is represented. The claims made may not have been approved for use in all countries. Dow assumes no obligation or liability for the information in this document. References to Dow or the Company mean the Dow legal entity selling the products to Customer unless otherwise expressly noted. NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED. Contact: North America: Asia: Europe: Latin America: Form No