High Foam PVC Processing Aid K902 | Additive for Thick Board 3~25mm Ultra Low Density & Uniform Cell Structure

Special Instruction

1. Product Overview

PVC foaming regulator K902 is a high-viscosity PVC processing aid specially formulated for high-foaming PVC boards. Designed for thick-gauge foam board extrusion, it ensures superior melt strength, uniform cell structure, and excellent mechanical properties. With intrinsic viscosity of 14.0–14.5, K902 enables low-density boards with smooth surfaces and consistent quality.

2. Product Principle

• Accelerates gelation and fusion under heat and shear in PVC formulations.
• High molecular weight enhances melt cohesion and viscoelasticity, effectively encapsulating expanding gases from blowing agents.
• Increased melt tension prevents bubble coalescence, promoting uniform fine-celled foam structures.
• Ensures consistent cell morphology from core to surface in thick boards.

3. Performance Characteristics

• Promotes low-temperature plasticization for energy-efficient, high-output processing.
• Superior melt strength allows board densities as low as 0.3 g/cm³ while preserving rigidity.
• Excellent dispersibility ensures homogeneous foam cell distribution.
• Low volatile content (≤1%) maintains stable extrusion.
• Reduces melt fracture and die swell, ensuring precise thickness control and smooth surfaces.

4. Usage and Dosage

• Recommended addition level: 3%–8% of total formulation weight.
• Adjust based on board thickness, target density, and extrusion conditions.
• Preliminary trials advised for optimal results.

5. Product Advantages

5.1 High Viscosity for Superior Melt Strength

• Intrinsic viscosity 14.0–14.5 provides exceptional melt strength.
• Stabilizes thick foam boards, prevents cell collapse, and ensures uniform density.

5.2 Enhanced Plasticization for Thick Sections

• Accelerates fusion, ensuring complete plasticization in thick boards.
• Reduces processing temperatures and energy consumption.

5.3 Uniform Microcellular Foam Structure

• Fine, closed-cell structures maximize mechanical strength and thermal insulation.
• Eliminates weak spots and improves overall board quality.

5.4 Excellent Surface Quality and Dimensional Stability

• Superior dispersibility and flow enhance surface smoothness and gloss.
• Reduced die swell ensures precise thickness and flatness.

5.5 Processing Stability for High-Output Extrusion

• Minimizes melt pulsation and die build-up.
• Enhances continuous run stability and reduces downtime.

5.6 Optimized for Thick-Gauge Applications

• Maintains foam integrity throughout thickness.
• Supports boards up to 25 mm with consistent quality.

6. General Instructions

• Packing: 25 kg/bag
• Storage: Conventional storage, valid for 2 years
• Note: Store in a cool, dry warehouse; avoid rain, moisture, fire, heat, sunlight, acids, alkalis, or mixing.

7. Applications

1. PVC High-Foaming Boards:
   • Celuka and free-foam boards for furniture, construction, signage, and marine use.
   • Thickness: 3 mm to over 25 mm; densities as low as 0.3 g/cm³.
2. PVC Foam Core Panels:
   • Lightweight partition walls, doors, and decorative panels.
   • Uniform cell structure ensures excellent screw-holding capacity and impact resistance.
3. Thick Section Plasticization:
   • Ensures uniform plasticization throughout board thickness.
   • Prevents unplasticized cores and maintains consistent mechanical properties.
4. Wide Die Applications:
   • Improves melt flow across wide extrusion dies for large-format boards.
   • Ensures uniform filling and thickness control.
5. Aesthetic Surface Applications:
   • Delivers superior surface gloss and smoothness.
   • Reduces secondary finishing operations for painted or exposed boards.

8. Company Introduction

Maijisen, a technology-focused plastic additives manufacturer headquartered in Kunshan, Jiangsu, specializes in Ca/Zn stabilizers, ACR processing aids, PVC processing aids, foaming regulators, and lubricants for PVC/WPC profiles, boards, flooring, pipes, cables, and footwear.

• Since 2009, the company operates 12,000 sqm production facilities and a 400 sqm R&D lab in Yancheng.
• The K902 foaming regulator is part of a tailored series including K902 for high-foam boards, K530 for high-foam profiles, K200 for WPC doors, and K400 for general foam boards.
• Focused on delivering optimized PVC processing solutions for global markets.

9. FAQ

1. What is the MOQ?
   MOQ is about 1 ton.
2. What are your payment terms?
   Payment terms: 100% by T/T, or 30% by T/T and 70% by L/C.
3. What about delivery?
   Delivery time: 10 days.
4. Can you supply free samples?
   Of course, we can supply 200g–500g per product.

10. Inquiry Guide

For formula customization, quotations, or process debugging plans, leave a message or send an inquiry. Professional support will be provided within 24 hours.