Speaker Equipment Protection, Wear-Resistant Polyurea

• CAS No.: Stwd9514
• Color: All Color Can Offer
• Appearance: Liquid
• Main Raw Material: Polyurethane
• Method: Spray
• Level: Primer
• Model NO.: STWD9514-1
• Drying Method: Air Drying
• Certification: ISO14001, ISO9001
• Formation Mechanism: Conversion Type
• Transport Package: Iron Bucket Packaging
• Specification: 410kg/group
• Trademark: STWD
• Origin: Shanghai, China
• Production Capacity: 80000kg/Day

Product Description

STWD9514 Movie props appliance and
speaker special polyurea protective coating

Product descriptions      STWD9514 is a 100% solid content aromatic spray polyurea elastomer. It bonds perfect well with wood materials which can greatly protect the high-end speakers in the theaters, cinema, auditorium, conference hall and other public places. It protects the speakers from damage of collision and abrasion and guarantee its high sound quality. STWD9514 polyurea is also suitable for the decoration protection of film props and park landscapes.

Product features and advantages.
*Solvent free, 100% solid content, safe, environmentally friendly and odor free.
*Rapid cure, can be sprayed forming on any bent, slope and vertical surfaces, no sagging.
*Coating film is compact, dense and flexibility, high adhesive strength with wood and foam substrate.
*Excellent impact resistance, collision resistance and abrasion resistance
*Excellent anticorrosion and chemical resistance to acids, alkali, salts etc.
*Good shock absorbing performance
*Excellent waterproof and moisture proof performance
*Excellent resistance to temperature variation
*Fast cure, application site back to service quickly
*Excellent durability to reduce maintenance cost of service life
*Extend the service life of sprayed structure

Product Applications
Film props, wooden electrical appliances, wooden furniture and other decorative protection

Products information

Item	A	B
Appearance	Pale yellow liquid	Adjustable color
Proportion(g/m³)	1.13	1.04
Viscosity(cps)@25ºC	650	720
Solid content (%)	100	100
Mixing ratio(volume ratio)	1	1
Gel time(second)@25ºC	3-5
Dry time(second)	10-20
Theoretical Coverage(dry film thickness)	1.03kg/ film thickness:1mm

Physical properties of products

Items	Test standard	Result
Hardness (Shore D)	ASTM D-2240	52
Elongation rate(%)	ASTM D-412	150
Tensile strength(Mpa)	ASTM D-412	20
Tear strength (N/km)	ASTM D-624	65
Impermeability(0.3Mpa/30min)	HG/T 3831-2006	impermeable
Wear resistance (750g/500r)/mg	HG/T 3831-2006	4.5
Adhesive strength(Mpa)concrete base	HG/T 3831-2006	3.1
Adhesive strength(Mpa) steel base	HG/T 3831-2006	11
Density(g/cm³)	GB/T 6750-2007	1.02
Cathodic disbondment [1.5v,(65±5)ºC,48h]	HG/T 3831-2006	≤15mm

Product corrosion medium

Acid resistance 10%H2SO4 or 10%HCI,30d	No rust, no bubbles, no peel off
Alkali resistance 10% NaOH, 30d	No rust, no bubbles, no peel off
Salt resistance 30g/L,30d	No rust, no bubbles, no peel off
Salt spray resistance, 2000h	No rust, no bubbles, no peel off
Oil resistance 0# diesel, crude,30d	No rust, no bubbles, no peel off
(For reference: the above data is acquired based on GB / T9274-1988 test standard. Pay attention to the influence of ventilation, splash and spillage. Independent immersion testing is recommended if requires other specific data)

Product construction environment

Environment temperature	0ºC-45ºC
Product spray heating temperature	65ºC-70°C
Pipe heating temperature	55ºC-65ºC
Relative humidity	≤75%
Dew point	≥3ºC

Product application guide

Recommend spray machine	Polyurea spray equipment
Spray gun	Air or machine self-cleaning coatings for spray gun
Static pressure	2300-2500psi
Dynamic pressure	2000-2200psi
Recommend film thickness	1000-3000μm
Recoating interval	≤6h

Application note

1. Agitate part B uniform prior to application, thoroughly mix the deposited pigments, or the product quality will be affected.

1. spray polyurea within the proper time if the substrate surface is primed. For the application method and interval time of STWD polyurea speical primer please refer to STWD companies' other brochure.
2. Always apply STWD spray polyurea on a small area before large application to check the mix ratio, color and spray effect are correct. For detailed information of application please refer to the latest instruction sheet of the application instructions of STWD spray polyurea series.

Product curing time

Substrate temperature	Dry	Foot traffic	Solid dry
+10ºC	20s	45min	7d
+20ºC	15s	15min	6d
+30ºC	12s	5min	5d

Note: the curing time varies with the environment condition especially the temperature and relative humidity.

Shelf Life
*From the manufacturer date and on the original package sealed condition:
A:10 months
B:10 months
*storage temperature:+5-35°C
Packing: Part A 210kg/drum, part B 200kg/drum
Make sure the product package sealed well
* store in cool and ventilated place, avoid direct sunshine exposure.