3-Methacryloxypropyltrimethoxysilane MPTMS KH-570 Coupling Agent with Dual Reactivity for Polyester Composite Materials

CAS 2530-85-0 3-Methacryloxypropyltrimethoxysilane MPTMS For Polyester Composite Materials γ-MPS KH-570

1. Description

3-Methacryloxypropyltrimethoxysilane is a bifunctional organosilane compound. Its molecule features two different reactive groups:

1. An organofunctional methacrylate group (CH₂=C(CH₃)COO-) that can undergo free radical polymerization with organic resins and polymers.
2. A hydrolyzable trimethoxysilane group (-Si(OCH₃)₃) that can condense with inorganic surfaces (e.g., glass, metals, minerals) or form siloxane bonds.

This dual functionality makes it an extremely effective coupling agent. It acts as a molecular bridge at the interface between an inorganic material (like glass fiber or mineral filler) and an organic polymer (like acrylic, polyester, or epoxy), dramatically improving adhesion and composite performance.

2. Specification

3. Key Features

• Dual Reactivity: Its core feature. The silane end bonds to inorganic surfaces, while the methacrylate end copolymerizes with organic matrices.
• Improved Adhesion: Dramatically enhances the bond strength between mineral surfaces (glass, silica, metals) and organic polymers (especially unsaturated polyesters, acrylics, and vinyls).
• Composite Performance: When used in composites, it significantly improves flexural strength, tensile strength, electrical properties, and wet-strength retention by ensuring stress transfer from the matrix to the reinforcing filler.
• Hydrolytic Stability: The silane group hydrolyzes in the presence of water (even ambient moisture) to form reactive silanols (Si-OH), which then condense to form stable siloxane (Si-O-Si) bonds with surfaces or with itself.
• Surface Modification: Can be used to treat fillers or nanoparticles to make them organophilic, improving their dispersion and compatibility in organic solvents and resins.

4. Applications

This silane is a workhorse in industries reliant on composite materials and adhesion.

• 1. Reinforced Plastics & Composites: The primary use. As a sizing or coupling agent on fiberglass for reinforced plastics (e.g., sheet molding compound - SMC, bulk molding compound - BMC), boat hulls, and automotive parts. It is essential for polyester and acrylic-based composites.
• 2. Adhesives & Sealants: Used to improve the adhesion of acrylic and structural adhesives and sealants to glass, metal, and mineral substrates.
• 3. Coatings & Paints: Added to coatings to enhance adhesion to difficult substrates like aluminum, galvanized steel, and glass. Improves corrosion resistance and durability.
• 4. Filler Treatment: Used to pre-treat mineral fillers (e.g., silica, clay, talc,氢氧化铝 ATH) in plastics and rubber to improve mechanical properties, dispersion, and processability.
• 5. Dental Materials: A key component in dental composites and adhesives. It is used to silane-treat the glass filler particles, creating a strong bond between the filler and the Bis-GMA or other resin matrix, which is critical for the material's strength and durability.
• 6. Nanomaterial Modification: Used to functionalize the surface of nanoparticles (e.g., SiO₂, TiO₂) to make them compatible with polymer matrices for advanced nanocomposites.

Packaging & Shipping

Packaging	1kg-15kg packing	2 PE bag inside + 1 foil bag outside in carton
	25kg-50kg packing	2 PE bag inside + 1 foil bag outside in drum
	Other packing	Customized packing
Drum Size	D38cm*H60cm or customized, 25 kg/ drum
Shipping	1-50kg	International Express	Fast and convenient	Door to Door
	50-500kg	Air Transportation	Fast and cheap	To Air Port
	Above 500kg	Sea Transportation	Cheap and convenient	To Port

Loading & Transport

Transportation	Mode of Transport	Brand	Shipping Time	Start and Destination	Style
Express	DHL		3-6 Days	Door to Door	Sample
	FEDEX		3-6 Days	Door to Door	Sample
	UPS		3-6 Days	Door to Door	Sample
	TNT		3-6 Days	Door to Door	Sample
	EMS		8-15 Days	Door to Door	Sample
Air	By Plane		3-7 Days	Airport to Airport	Order
Sea	By Ship		Asia: 15-20 Days Europe: 25-35 Days America: 30-40 Days	Port to Port	Order

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We support multiple trading methods and payment such as T/T, L/C, D/A, D/P, O/A, MoneyGram, Credit Card, PayPal, Western Union, Escrow and etc. Please contact us if you need more info.

Q3: How can i get a sample?

Yes, you can get free samples for some products, but the shipping cost would be paid by customers.

Q4: How to confirm the Product Quality before placing orders

You can get some sample, or we can send certificate of analysis or HPLC or NMR to you.

Q5: How to guarantee the quality of your products?

Strict sampling inspection on products before shipment and intact product packaging ensured.

Q6: How can I make payment safe?

The whole transaction is under Third party inspection.

Q7: Whether you could make our brand on your products?

Yes. We can print your Logo on the packages if you can meet our MOQ.

Why Choose Us

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3.Trade Assurances

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9.Our distribution capabilities include:

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Anything from bulk shipments of thousands of tonnes down to the smallest shipment of packed goods and even samples.

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Chemical, feed and food storage to accredited standards

Segregated materials by business unit and hazard classification

Temperature controlled storage and transport

Effective cost control

Re-packing, drum filling, bagging

Customer delivery KPI's on delivery fulfillment performance

Packaging & Shipping

Packaging	1kg-15kg packing	2 PE bag inside + 1 foil bag outside in carton
	25kg-50kg packing	2 PE bag inside + 1 foil bag outside in drum
	Other packing	Customized packing
Drum Size	D38cm*H60cm or customized, 25 kg/ drum
Shipping	1-50kg	International Express	Fast and convenient	Door to Door
	50-500kg	Air Transportation	Fast and cheap	To Air Port
	Above 500kg	Sea Transportation	Cheap and convenient	To Port

Loading & Transport

Transportation	Mode of Transport	Brand	Shipping Time	Start and Destination	Style
Express	DHL		3-6 Days	Door to Door	Sample
	FEDEX		3-6 Days	Door to Door	Sample
	UPS		3-6 Days	Door to Door	Sample
	TNT		3-6 Days	Door to Door	Sample
	EMS		8-15 Days	Door to Door	Sample
Air	By Plane		3-7 Days	Airport to Airport	Order
Sea	By Ship		Asia: 15-20 Days Europe: 25-35 Days America: 30-40 Days	Port to Port	Order