Anti Sagging Spraying Polyester Resin for Boats

PLM-18501 High strength low temperature peak low shrinkage casting resin for boats cabin covers auto parts

thumb PLM-18501 High strength low temperature peak low shrinkage casting resin for boats cabin covers auto parts

This product is an unsaturated polyester resin specifically formulated for spray molding applications. Precisely tailored for the spray-up fabrication of fiberglass products, it features key characteristics such as low viscosity, superior wetting properties, rapid de-aeration, and controllable working times. It effectively balances ease of application with the structural stability of the finished product, allowing for successful molding without the need for complex machinery.

High Strength

Low Viscosity

Low Shrinkage

Low Odor

Good Wetting

Model:PLM-18501

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Anti Sagging Spraying Polyester Resin Overview

The resin's viscosity is optimally calibrated for the spray-up process, offering moderate flow characteristics that prevent sagging or excessive buildup. It rapidly and thoroughly wets out reinforcing materials—such as fiberglass cloth and mat—and effectively facilitates the release of trapped air bubbles, thereby preventing defects such as voids, delamination, and pinholes in the finished product. The resulting molded parts exhibit a dense internal structure and a smooth, uniform surface finish. Furthermore, the curing process is gradual and generates low exothermic heat, minimizing the risk of issues such as cracking or warping. Once cured, the material demonstrates excellent mechanical strength, toughness, and resistance to both weathering and chemical corrosion, enabling it to withstand prolonged exposure to outdoor environments and common chemical media.

PLM-18501 by POLEMA is a professional-grade anti sagging spraying polyester resin specifically designed for continuous FRP spray-up processes. As a premier supplier, we deliver this low-emission, highly thixotropic spraying polyester resin to ensure zero sagging on vertical marine hulls and fast glass fiber wetting.

Core Performance Advantages

Low viscosity, anti-sagging properties, and low shrinkage.

Pre-promoted and thixotropic

Highly convenient to use

Features a reasonable gel time, high application tolerance, and ease of operation, requiring no complex equipment.

Anti Sagging Spraying Polyester Resin Specifications

Item No	Chemical Category	Viscosity	Gel Time	Solid Content	Tensile Strength	Flexural Strength	Heat Deflection Temperature	Application	Feature Description
PLM-1001	Orthophthalic	300-450	15-25	58-65	70	120	75	Hand Lay-up	Universal
PLM-105	Orthophthalic	200-300 (Winter)	10-24	65	67	115	69	Auto part and fishing boats	Sag resistance Low viscosity Low shrinkage
		250-400 (Spring/Autumn)	20-40	65	67	115	69
		300-500(summer)	30-50	65	67	115	69
PLM-191DC	DCPD	350-500	4-6	67-73	60	95	85	Hand layup FRP compo- nents, wrapped pipes, storage tanks	Low volatility Low shrinkage
PLM-197	Bisphenol A Epoxy	400-550	10-18	64-68	75	125	120	Anti-corrosion pipes and tanks	High-temperature resistant Corrosion-resistant
PLM-199	Isophthalic	650-850	15-25	64-68	63	110	118	Temperature-resistant fiberglass pipes and components	High-temperature resistance High strength
PLM-3301	Bisphenol A	400-550	7-15	60-65	68	105	68	Pipelines for acid storage and transportation	High corrosion resistance

Anti Sagging Spraying Polyester Resin Application

汽车零部件

Automotive Parts

Fishing Boats

Water Tanks

Piping

Anti Sagging Spraying Polyester Resin FAQ

What type of resin is PLM-18501?

It is an orthophthalic-type, pre-accelerated, highly thixotropic, low-viscosity, and low-styrene-emission (LSE) unsaturated polyester resin specifically designed for spray-up applications. It is primarily intended for FRP spray-up, hand lay-up, and the fabrication of large-scale vertical structures; it features low odor in the workshop environment, exhibits no sagging on vertical surfaces, and facilitates rapid glass fiber wet-out.

What are the differences between 18501 and standard 191/196 resins, or PLM-105?

Designed specifically for spray-up: Features lower viscosity, excellent atomization, and ensures uniform mixing with chopped fibers immediately after cutting;
High Thixotropy: Prevents sagging or dripping on vertical and overhead surfaces after spraying, allowing for the application of thicker layers in a single pass;
Low Volatility (LSE): Exhibits low styrene emission, making it environmentally friendly, low-odor, and suitable for use in enclosed workshop environments;
Pre-accelerated: Requires only the addition of a curing agent (hardener), eliminating the need for supplementary cobalt solution; this ensures simple and stable mixing ratios;
Enhanced Toughness: Offers superior impact resistance and crack resistance compared to general-purpose resins, making it ideal for the fabrication of large, thin-walled components.