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UNION -25
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UNION -25
UNION -25

UNION -25

-25 resin is a pre-accelerated, long-gel time unsaturated polyester resin with low viscosity, good glass fiber wettability, fast curing and air-drying properties.

  • Description
  • Features
  • Material Properties
  • Application
  • Why Union
  • FAQ
  • Inquire Now

Description

-25 resin is a pre-accelerated, long-gel time unsaturated polyester resin with low viscosity, good glass fiber wettability, fast curing and air-drying properties. It is suitable for RTM and vacuum infusion forming process, and is used to manufacture glass fiber reinforced plastic fishing boats, auto parts, fan hoods and waterproof boards and other products.

Features

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Low Viscosity

Low resin viscosity refers to strong resin fluidity, making processing and construction more convenient

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Fast Curing

The reaction rate of resin from liquid to solid is fast

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Air-drying Properties

After curing at room temperature, the surface of the resin does not touch

Material Properties

Properties of Liquid Resin

Item

Unit

Index

Test method

Appearance

——

Purple-red transparent liquid

GB/T 8237.4.1.1

Viscosity

25℃, Pa.S

0.14-0.18

GB/T 7193.1

Acid Value

MgKOH/g

28-34

GB/T 2895

Gel Time

25℃, min

50.0-80.0

GB/T 7193.6

Solids Content

%

54-60

GB/T 7193.3


Gel time: 55% methyl ethyl ketone peroxide: 1%



Performance of resin casting body (for reference only)

Item

Unit

Casting body measured data

Test method

FRP measured data

Test method

Barco Hardness

49

GB3854-05

——

GB3854-05

Heat Distortion Temperature

78

GB/T1634-04

——

——

Bending Strength

MPa

128

GB/T2570-95

400

GB/T1449-05

Flexural Modulus

MPa

4200

GB/T2570-95

21000

GB/T1449-05

Tensile Strength

MPa

55

GB/T2568-95

420

GB/T1447-05

Tensile Modulus

MPa

4200

GB/T2568-95

21000

GB/T1447-05

Elongation at Break

%

1.8

GB/T2568-95

2.3

GB/T1447-05

Compressive Strength

MPa

——

GB/T2569-95

210

GB/T1448-05

Compression Modulus

MPa

——

GB/T2569-95

16000

GB/T1448-05


Remarks:

① The sample preparation method shall be implemented according to GB 8237-87.

② Curing system: curing agent 55% MEKPO: 1%

③ Post-curing treatment: 60℃×2 hours + 100℃×2 hours

④ Glass fiber content: 70±3%

Application

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Auto Parts

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Fishing Boats


Why Union

Union Composites


Union focuses on the manufacturing of composite materials and is the designated distributor of Jushi Group, which can provide customers with composite products of stable quality. Union is committed to meeting diverse customer needs and can customize products.



Contact UNION

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    Stable Product Quality

    Fixed raw materials suppliers like Jushi smc roving and chopped strand, resin from AOC and our own resin factory with capacity 300000 tons.
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    New Product Development

    Professional production testing equipment, according to TDS adjustment parameters, research and development of new products.
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    Professional Team

    Union compsites, as a model enterprise with national technology patents, has been providing resin to customers from 50+ countries.


FAQ

  • Q: What is the Transportation and Storage of Unsaturated polyester resin?A: The transportation shall comply with the chapter V of the Regulations on Measures for the Administration of Road Transportation Safety of Dangerous Goods.
    Store below 25℃, Avoid direct sunlight, fire and heat. With the compliance of all above, 3 months shelf life should be granted.

  • Q: How do you pack the resin?A: 220KG/DRUM, 1 IBC=1000KG
    Pallet size: 1.12*1.12*1.03M
    1*20GP=80drums, 4drums=1 pallet, total 20pallets
    1*40HQ=108drums, 4drums=1 pallet, total 27pallets.

  • Q: Can we get samples?A: Yes, we can provide free sample for you (within 6kg).

  • Q: What is the delivery time?A: It takes one month from production to shipment.

  • Q: Whether the resin can be customizedA: Yes, we can produce according to your requirments.

Inquire Now

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UNION COMPOSITE
Union Composites Changzhou Co., Ltd. is situated in Changzhou, a picturesque water town located in the southern region of the Yangtze River. As an export-oriented company, specializing in composite materials, 90% of our products are exported to Europe, Asia, America, Middle East and Africa.
Since established in 2012, our company has been adhering to the corporate mission of "intelligent manufacturing in China to the World", and is committed to providing customers with high-quality, high-performance and comprehensive composite material solutions.