The reliability test is to expose the product under the environment of natural or artificial environmental conditions, to evaluate the performance of the product under the environmental conditions of actual use, transportation, and storage, and analyze the impact and mechanism of environmental factors and its mechanisms of environmental factors. Construction material reliability test items include:1. Climate and environmental test1) Temperature aging test (high temperature aging, low temperature aging, temperature circulation test, temperature impact, constant temperature and humidity, three comprehensive tests) 2) Light aging test (aging lamp, ultraviolet aging, solar radiation, carbon arc light aging) 3) Shell protection level (rainstorm test, waterproof test, dustproof test, sand dust test, gravel test) 4) Corrosion environment test: gas corrosion test (sulfur dioxide, hydrogen sulfide, nitrogen dioxide, chlorine gas), salt fog corrosion test (neutral salt fog, acid salt fog, copper ion acceleration acid salt fog), solvent -resistant test (acid resistance test test , alkali resistance, alcohol -resistant, toluene, etc.) 5) Ozone aging 2. Mechanical Environment TestVibration test, mechanical impact test, stretching strength, compression strength, bending strength, falling test, shear strength, pencil hardness, Loos hardness, Shaw's hardness, tearing strength, and anti -folding strength, wear test, etc.&nbs

Fire extinguishers are the most common fire-fighting equipment, so we need to be familiar with what items and standards need to be checked for fire extinguishers to ensure that the fire extinguishers can be used normally. What items should be checked for fire extinguishers? Fire extinguishers should comply with market access regulations, and should have factory certificates and related certificates. The nameplate, production date and maintenance date of the fire extinguisher should be complete. The type, specification, level and quantity of fire extinguishers shall meet the requirements of the planting design. The fire extinguisher bottle should have no obvious defects and mechanical damage. The safety device of the fire extinguisher should be intact. 1. The pointer of the fire extinguisher pressure indicator should be within the green zone. The extinguisher pressure is too low (more than 10% weight loss of CO2 extinguisher) and must be refilled.2. If the lead seal of ABC dry powder fire extinguisher is damaged, it must be refilled.3. The interface between the fire extinguisher bottle and the horn must be tightened, and the fire extinguisher bottle and horn must not be damaged.4. Keep the fire extinguisher clean as a whole (according to the situation on site).5. Configure fire extinguishers according to the site conditions (according to the number of fire extinguishers, fire extinguisher types, fire extinguisher models, etc.).6. The fire extinguisher should be place

Fires occur frequently in daily life. On average, large and small fires in China will cause economic losses of more than 500 million yuan to the society every year. What is more worthy of attention is the huge disaster and pain brought to the fire victims, so it is very important that the materials we come into contact with in life have fire-resistant and flame-retardant functions. Therefore, with the development of flame retardant technology, a lot of flame retardant materials have been produced. For their specification eligibility, environmental protection, and usability, there are corresponding flame retardant test standards internationally and in various countries. 1. About flame retardant materialsFlame retardant, according to the literal understanding, is to prevent burning or ease the spread of burning. Flame retardant material is a kind of protective material, which can inhibit or delay combustion and is not easy to burn itself. There are solid materials such as cement, steel, and glass. There are liquids, also referred to as flame retardants. If the flame retardant is coated on the surface of various materials such as the fire wall, it can ensure that it will not be burned in the event of a fire, and it will not aggravate and expand the burning range. The products of flame retardant materials can be mainly divided into seven categories: flame retardant fabrics, flame retardant chemical fibers, flame retardant plastics, flame retardant rubber, fire

Building exterior wall insulation materials have brought a series of problems while reducing building energy consumption. Among them, the most important fire hazard is building exterior wall insulation materials, and organic insulation materials are easy to burn. The building exterior wall insulation system using organic thermal insulation materials can easily cause the fire to spread rapidly to the entire building in case of fire. That needs to detect the burning behaviour of building exterior wall insulation materials. What is the test method for the burning performance of building exterior wall insulation materials?Test equipment for burning performance of building exterior wall insulation materialsThe burning behavior test of building exterior wall insulation materials uses the building material burning thermal value test apparatus and the building material product Single Burning Item test machine (SBI) to conduct experimental research on the burning performance of commonly used thermal insulation materials. The test instrument for the thermal value of burning of building materials is shown in Figure 1, which is mainly used to measure the thermal value of burning of building materials. The thermal value of burning is the energy released by the complete burning of 1 kg of material. It is a characteristic of the material and has nothing to do with the use state or size of the material. It is often used to evaluate the p

The burning chamber of the building material single burning item test equipment is designed according to the standard requirements of GB/T 20284-2006 "Single burning item test for building materials and products". It is a test device used to determine the fire reactivity of building materials or products (excluding floor coverings and products specified in EC Decision 2000/147/EC) in the single combustion test (SBI).The indoor height of the building material single burning item test combustion chamber is (2.4±0.1)m, and the indoor floor area is (3.0±0.2)X(3.0±0.2)m². Walls shall be constructed of masonry blocks (e.g. porous concrete), plasterboard, calcium silicate boards or other types of panels classified as class A1 or A2 according to EN 13501-1. Individual testing of building materials Individual testing of building materials An opening shall be provided in one wall of the combustion chamber to facilitate the movement of trolleys from an adjacent laboratory into the chamber. The width of the opening shall be at least 1470mm and the height shall be at least 2450mm (the size of the frame). Windows should be respectively set up on the two walls facing the two front surfaces of the vertical sample plate. In order to facilitate the control of the SBI device and the test piece after the trolley is in place, an additional door is required. After the trolley is in place in the burning chamber of the single burning item building material test, the

The occurrence of fire is the most common, the most prominent and the most harmful disaster in real life, and it is a major issue directly related to the safety of people's lives and property. Therefore, fire safety is very important in daily production and life. In high-rise buildings and public places with a large flow of people, fire doors are also an indispensable part of fire safety management. The application of fire doors ensures our life safety. The installation of fire doors that meet fire standards has become a mandatory requirement for fire acceptance. What are Fire Doors?Fire doors refer to doors that can meet the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. In addition to the function of ordinary doors, fire doors also have the function of preventing the spread of fire and the spread of smoke. It can prevent the spread of fire within a certain period of time, ensure the evacuation of personnel to buy time for escape and fire fighting, and use it with fire exits to minimize fire losses. The approved laboratory designated by the Ministry of Fire and Economic Affairs, according to the national/international standards for fire doors, the fire door fire resistance test method, and obtained the verification registration certificate and authorized logo issued by the Standard Inspection Bureau of the Ministry of Economic Affairs, is called a fire door. What is the function of a fire door?The no