Valid

GB/T 36532-2018Fibre-reinforced plastics -- Thermosetting moulding compounds and prepregs -- Determination of cure characteristics (English PDF)

纤维增强塑料热固性模塑料和预浸料固化特性测定

Preview PDF

This is a limited preview

Buy now to download the full PDF (20 pages)

Need quotation for your management?

Get a formal quotation for GB/T 36532-2018 in 30 minutes.

Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

July 13, 2018

Implementation date

June 1, 2019

Scope

GB/T 36532-2018 is the English-translated version of 纤维增强塑料热固性模塑料和预浸料固化特性测定.

GB/T 36532-2018 is the Chinese standard "Fibre-reinforced plastics -- Thermosetting moulding compounds and prepregs -- Determination of cure characteristics". Its scope clause reads: This standard specifies two methods for determining the curing properties of fiber reinforced thermosetting molding compounds and prepregs.

Characteristic parameters to be measured as follows. --- The heat generated by the exothermic reaction; --- Thermal expansion of the molding compound with increasing temperature; --- Shrinkage caused by the curing reaction.

The method is applicable to a molding compound composed of a thermosetting resin and a reinforcing fiber, and is mainly applied to an unsaturated polyester resin molding compound.

Method 1. A simple method for determining the reactivity of a thermosetting molding compound. This method is only used to determine the reaction characteristics of the molding compound matrix, and stability, stability affects the storage period of the molding compound.

Method 2. The physical properties of the molding compound under simulated molding conditions can be obtained, but more complicated equipment and longer test time are required. between.

The prepared molded test piece can be used for more performance tests. Its clauses include terms and definitions.

Found what you need?

Document preview — GB/T 36532-2018

National Standard of the People's Republic of China

ICS: 83.120
Classification: Q 23

Issued by: State Administration for Market Regulation, China National Standardization Administration

Foreword
1 Scope
2 Normative references

1 Scope

This standard specifies two methods for determining the curing properties of fiber reinforced thermosetting molding compounds and prepregs. Characteristic parameters to be measured as follows.

--- The heat generated by the exothermic reaction;

--- Thermal expansion of the molding compound with increasing temperature;

--- Shrinkage caused by the curing reaction.

The method is applicable to a molding compound composed of a thermosetting resin and a reinforcing fiber, and is mainly applied to an unsaturated polyester resin molding compound.

Method 1. A simple method for determining the reactivity of a thermosetting molding compound. This method is only used to determine the reaction characteristics of the molding compound matrix.

And stability, stability affects the storage period of the molding compound.

Method 2. The physical properties of the molding compound under simulated molding conditions can be obtained, but more complicated equipment and longer test time are required.

between. The prepared molded test piece can be used for more performance tests.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

ISO 472.1988 Plastic Term (Plastics-Vocabulary)

ISO 8605.1989 Textile Glass Fiber Reinforced Plastic Sheet Molding Compound (SMC) Fundamental Specification [Textileglass reinforcedplastics-Sheetmouldingcompound(SMC)-Basisforaspecification]

ISO 8606.1990 Plastic premixed bulk molding compound (BMC) and thickener-free bulk molding compound (DMC) basic gauge

[Plastics-Prepregs-Bulkmouldingcompound(BMC)anddoughmouldingcompound(DMC)-

Basisforaspecification]

3 Terms and definitions

The following terms and definitions as defined in ISO 472, ISO 8605 and ISO 8606 apply to this document.

3.1 Reactive activity

The maximum slope of the time-dependent temperature profile of the thermoset material during curing, in degrees Celsius per second (°C/s).

3.2 Curing characteristics

The characteristic parameters obtained by molding a thermosetting material under normal molding conditions can be expressed by the following parameters.

--- curing time;

--- Thermal expansion;

--- shrinkage caused by the curing reaction;

--- Net shrinkage (reaction shrinkage minus thermal expansion).

The size of these parameter values depends on the molding conditions actually employed.

GB/T 40388 | GB/T 39491 | GB/T 36262 | GB/T 47083 | GB/T 43938.3 | […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 20 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 472.1988 · ISO 8605.1989 · ISO 8606.1990

How to Download GB/T 36532-2018

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.