What is a vertical combustion testing machine?
The vertical combustion testing machine is a professional equipment used to test the flame retardant properties of materials. It is widely used in fire safety testing in plastics, textiles, electronic appliances, automobile interiors and other industries. This article will introduce in detail the definition, working principle, application fields and related standards of the vertical combustion testing machine, as well as data analysis of recent hot topics and hot content.
1. Definition of vertical combustion testing machine
The vertical combustion testing machine is a testing equipment that simulates the burning behavior of materials in a vertical state. It evaluates the flame retardant level of materials by observing indicators such as flame spread speed, burning time, and whether dripping materials ignite cotton pads. Its test results are crucial to the fire safety design of the product.
2. Working principle
The working principle of the vertical combustion testing machine mainly includes the following steps:
1.Specimen fixed: Fix the sample vertically on the test frame to ensure that it is in the standard testing state.
2.flame application: Use a standard flame (such as methane flame) to apply a flame to the bottom of the sample for a certain period of time.
3.Observation record: Record flame spread time, burning length, dripping behavior and other data.
4.Result judgment: Determine the flame retardant grade of the material according to standards (such as UL94, GB/T 2408).
3. Application fields
Vertical combustion testing machines are widely used in the following industries:
| Industry | Application scenarios |
|---|---|
| Electronic appliances | Flame retardant testing of circuit boards, insulation materials, and shells |
| automobile manufacturing | Fire performance testing of interior materials and cables |
| building materials | Flame retardant evaluation of insulation materials and decorative panels |
| Textiles | Fire protection testing of firefighting suits, curtains and other fabrics |
4. Recent hot topics and hot content (last 10 days)
The following are the recent hot topics and hot content on the entire network about vertical combustion testing machines and related fields:
| topic | heat index | Main discussion content |
|---|---|---|
| New regulations on fire safety for new energy vehicles | 85 | Many countries release electric vehicle battery flame retardant test standards |
| UL94 standard update | 72 | The new version of UL94 in 2023 adds testing requirements for recycled materials |
| Flame retardant material technology innovation | 68 | The performance of halogen-free flame retardants in vertical burning tests has attracted attention |
| Laboratory safety accident | 55 | A testing agency caused a combustion test fire due to improper operation. |
5. Standards for vertical combustion testing machines
Vertical combustion tests need to comply with a number of international and domestic standards. The following are common standards:
| Standard name | Scope of application |
|---|---|
| UL94 | Classification of flame retardant grades of plastic materials |
| GB/T 2408 | China plastic combustion performance test standards |
| IEC 60695-11-10 | Fire protection testing of electronic and electrical products |
| ASTM D3801 | U.S. Materials Vertical Burning Test Method |
6. Summary
The vertical combustion testing machine is a key equipment for evaluating the fire safety of materials. Its test results directly affect product design, production and market access. With the rapid development of new energy, electronic and electrical industries, etc., the demand for flame retardant testing will continue to grow. Recent discussions on new energy vehicle fire protection standards, UL94 updates and other topics also reflect the industry’s emphasis on vertical combustion testing technology.
Choosing a vertical combustion testing machine that meets the standards and strictly following the testing process is an important guarantee to ensure accurate evaluation of the flame retardant performance of the material.
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