Resin P305

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China Main Port
Payment Terms:
TT or LC
Min Order Qty:
20Ton m.t.
Supply Capability:
5000 Ton/ Month m.t./month

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Product Description:

 Introduction of Resin P305

Novolac Epoxy vinyl ester resin, premium, dimensionally stable formulations w/LPA. Used for the parts ‘under the hood’, such as diesel engine, oil pump, valve covers, heat shields, etc.


Technical Specification of Resin P305





light yellow, liquid


Acid Value, mgKOH/g

33.0 ± 5.0

GB/T 2895-2008

Viscosity, mPa · s   (25Deg.C)

2500 ± 500

GB/T 7193-2008

*Gel Time, min(SPI)

28.5 ± 6.5

GB/T 7193-2008

*Curing Time, min(SPI)

33.0 ± 7.0

GB/T 7193-2008

*Exothermic peak, Deg. C


GB/T 7193-2008

Density, g/cm3     (25 Deg. C)

1.037 ± 0.012


Thermal Stability, hr  (80 Deg. C)


GB/T 7193-2008

*add 98% BPO 1.0% into 82 Deg. C water bath.


Mechanical peoperty of casting of Resin P305




Tensile Strength, MPa


ASTM D 638

Tensile Modulus, GPa


ASTM D 638

Breaking Elongation, %


ASTM D 638

Flexural Strength, MPa


ASTM D 790

Flexural Modulus, GPa


ASTM D 790

Barcol Hardness


 ASTM D 2583

Note: The listed data is typical physical property, not to be construed as product specification.


SMC Mechanical Property of Resin P305




Tensile Strength, MPa


ASTM D 638

Flexural Strength, MPa


ASTM D 790

Heat Distortion Temperature, °C (1.8MPa)


ASTM D 648

Note: The listed data is based on SMC sheet thickness 4mm thick, the recipe is based: Resin: TBPB: ZINC STEARATE: MgO: fiberglass strand as 59: 0.8: 2.5: 1.7: 36 (weight), press temperature 150 Deg. C, and pressure 83MPa, temperature maintain time 180s.


Proposed recipe of Resin P305


Value for general application


Value for auto part


MFE 757



Shrinkage agent






















Fiberglass strand




(1’’ length)


Package and Storage of  Resin P305

The product should be packed into clean, dry, safe and sealed container, net weight 200 Kg.

Stored in cool and well ventilated place, six months below 25Deg. C..



 Resin P305  



 Resin P305  



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Q:Why is weak resin relatively easy to regenerate?
Special regeneration treatmentThe resin with serious pollution, acid or alkaline salt solution such as repeated treatment with 10%NaCl alkali salt solution +1%NaOH dissolved organic matter, and 4%HCl or 10%NaOH were used and 1%HCl dissolved inorganic compounds, followed by 10%NaCl +1%NaOH, at about 70 DEG C.If the above treatment does not meet the requirements, the oxidation process can be used. After washing the resin with water, the sodium hypochlorite solution with a concentration of 0.5% is used to control the flow rate from 2 to 4BV/h, and the amount is 10 to 20BV. Then the water is washed by water and treated with salt water. It should be noted that oxidation treatment may lead to the bonding of macromolecules in the resin structure, resulting in degradation of the resin, swelling degree, easy to crack, so it is not suitable for use. 50 cycles are usually used before an oxidation treatment takes place. Because of the strong oxidation resistance of the chlorinated resin, the resin is treated with brine before it is oxidized and changed into chlorine, which can avoid the change of pH value in the treatment process and make the oxidation more stable.
Q:How do you make resin powder?
Matt resin is a kind of special material for processing low gloss PVC and other products. It can be widely used in deep processing products such as insulated cables, wires, telephone wires, speakers, wires, matting films, door and window seals, instrument panels, etc..Usage: suitable for all kinds of ordinary PVC resin processing equipment, can be rolled, extrusion, injection of various products. The product surface has extinction, and has good characteristics in vision and touch. According to the specific requirements of different products, users can add some amount of extinction resin on the basis of their original formula, and then produce the matting products that meet the requirements.
Q:What's the general price of resin lenses?
Experts advise consumers that any occasion should be careful not to expose the mirror directly to hard objects. Even if you use the soft cloth or wiping paper, even with "high quality suede" wiped tiny dust particles, especially with the naked eye is difficult to perceive may scratch, scratch resin lenses, even if the price of the expensive resin lenses are unable to overcome this defect.Proper cleaning methods: it is best to use water (or adding a small amount of detergent cleaning), then use special cloth or cotton swab of high quality dry glasses drops (Note: it is not dry, wipe).
Q:Does phoenix brand 6101 and EP hardener mix with fever? What type of epoxy resin has a strong adhesion on PVC?
The heat of mixing is the heat that occurs when the epoxy resin is mixed with the curing agent. The reaction heat is the heat released by the epoxy resin and the curing agent.
Q:Is there a flame retardant epoxy?
According to the characteristics of its combustion, the halogen containing flame retardant suitable halogen containing flame retardant is produced high active radical trapping agent in the combustion process, can effectively prevent combustion in the gas phase. At present, the flame retardant grade high molecular weight epoxy resin production, it will be a good prospect of reaction type of flame retardant. Generally, flame retardant epoxy resin is prepared by raw materials with flame retardant containing phosphorus and bromine containing synthesis. The phosphorus element in the skeleton structure of epoxy resin can improve the thermal stability and flame retardancy. The general raw material has four phosphate, tetrabromobisphenol A and so on.
Q:How are black spots detected in solid petroleum resins?
The curing agent can be divided into catalytic type (such as three boron trifluoride amine complex, tertiary amine) and co reaction type (such as polyamine and anhydride). Catalytic curing agent of epoxy resin by homopolymerization, the dosage can be determined experimentally; total reactive curing agent is active hydrogen containing multifunctional reagent, it is the calculation of active groups with resin by chemical (epoxy and hydroxyl) reaction. Curing agent up to 300 kinds. For example, aliphatic polyamine, low molecular polyamide, etc., can be cured at room temperature epoxy resin; anhydride, aromatic polyamine and so on, you need to rely on heating to complete the curing reaction.
Q:What kind of resin is AC resin (AC as raw material for the production of glasses lenses)?
Polymethyl methacrylate abbreviation code PMMA, commonly known as plexiglass, is by far the most transparent synthetic materials of the best quality, the price is more suitable varieties. PMMA resins are not prone to produce sharp fragments during fragmentation, and have advantages in optical properties:1, visible light: visible light transmittance is higher: PMMA is the most excellent polymer transparent material, visible light transmittance of 92%, higher than the transparency of glass.
Q:Is PU and resin a thing?
A resin is the secretion of hydrocarbons (hydrocarbons) from a variety of plants, especially conifers. Because of its special chemical structure, and can be used as adhesive and latex paint as materials, have attracted much attention for its value. It is a mixture of a variety of polymers, so they have different melting points. Resin can be divided into two kinds of natural resin and synthetic resin. Only this kind of natural resin itself, but with the development of chemical industry, there are many from synthetic polymers, among the chemical and physical properties of some polymers and natural resin is very similar, therefore, the polymer is called synthetic resin.
Q:How long does it take to complete the whole resin filling
We should pay attention to 2 hours should not eat filling resin dental teeth, because the tree refers to a certain time to harden teeth, and teeth after eating to avoid chewing side teeth. When the resin has been hardened and cured, the normal diet function can be resumed. Dental fillings after the masticatory function of teeth seriously, how long can use after dental resin dental fillings so that should be paid attention to oral protection, attention must not bite should be excellent resin fillings filled teeth after food.
Q:Resin tray good or wood tray? Detailed point
Do the tea is really good. The so-called technology wood, in fact, it is similar to the process of composite flooring, that is, in the resin with wood powder, looks more like wood, so you can do more beautiful.
We are a well-known enterprise specializing in the production and sales of high-grade fiberglass mesh, is a direct supplier for fiberglass mesh. Since the establishment of our company, we have been devoted to setting up a good CIS and completely implementing ISO9001 quality management system.

1. Manufacturer Overview

Location Tianjin, China
Year Established 1989
Annual Output Value Above US$ 3 Million
Main Markets Mid East; Eastern Europe; North America
Company Certifications ISO 9001

2. Manufacturer Certificates

a) Certification Name  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Tianjin
Export Percentage 21% - 30%
No.of Employees in Trade Department 5-10 People
Language Spoken: English; Chinese
b)Factory Information  
Factory Size: Above 3000 square meters
No. of Production Lines Above 5
Contract Manufacturing Design Service Offered
Product Price Range Average