Wanjia Thermal Insulation Materials Co., Ltd. is the production and operation of thermal insulation materials under the leadership of the board of directors: XPS extruded board, EPS polystyrene board, foam board, perlite, rock wool board, bonding mortar, plastering mortar, cracking mortar, floor heating materials, etc. New wall insulation material. Good quality, full specifications, low price, good faith cooperation, preferred Wanjia insulation. Http://zzwjbw.web1.asiae This standard is a revision of GB/T10801-1989 "Polystyrene foam for insulation".
The dimensional deviation requirements specified in this standard are basically the same as the British Standard (BS) 3837.2:1990 "Foam Polystyrene Board - Part 2: Extrusion Plate Specification", and the water absorption of X250, X300, X350, X400, X450, X500 and BS3837.2 is consistent, thermal conductivity and dimensional stability requirements are stricter than BS3837.2.
GB/T10801 is a series of standards, including the following two parts:
Part 1 (ie GB/T10801.1): molded polystyrene foam for thermal insulation;
Part 2 (ie GB/T10801.2): Extruded polystyrene foam (XPS) for thermal insulation.
This standard is the second part of the series of standards.
This standard has replaced GB/T10801-1989 since its implementation.
This standard was proposed by the China Light Industry Association.
This standard is under the jurisdiction of the National Plastics Standardization Technical Committee.
This standard was drafted: National Institute of Building Materials Industry Standardization Institute, Light Industry Plastics Processing and Application Research Institute, Nanjing Owens Corning Extruded Foam Board Co., Ltd., Dow Chemical (China) Investment Co., Ltd.
range
This standard specifies the classification, specifications, requirements, test methods, inspection rules, marking, packaging, transportation and storage of extruded polystyrene foam (XPS) for thermal insulation.
This standard applies to insulation extruded polystyrene foams with a temperature not exceeding 75 ° C, as well as insulation extruded polystyrene foam with plastic, foil veneer and surface coating.
Reference Standard
The provisions contained in the following standards constitute provisions of this standard by reference in this standard.
GB/T2918—1998 Standard environment for conditioning and testing of plastic specimens (idt ISO291:1997)
GB/T4132—1996 Thermal insulation materials and related terms (neq ISO7345:1987)
GB/T6342-1996 Determination of linear dimensions of foams and rubbers (idt ISO1923:1981)
GB8624—1997 Classification method for burning performance of building materials (neq DIN4102: 1981)
GB/T8626—1988 Test method for flammability of building materials (eqv IN4102—1)
GB/T8810—1988 Test method for water absorption of rigid foams (eqv ISO2896:1986)
GB/T8811—1988 Test method for dimensional stability of rigid foams (eqv ISO2796: 1980)
GB/T8813—1988 Hard foam compression test method (idt ISO844: 1978)
GB/T10294—1988 Determination of steady-state thermal resistance of thermal insulation materials and related characteristics - Protection hot plate method (idt ISO/DIS8302: 1986)
GB/T10295—1988 Determination of steady-state thermal resistance of thermal insulation materials and related characteristics - Thermal flow method (idt ISO/DIS8301:1987)
QB/T2411—1998 Water vapor permeability of rigid foam
definition
This standard uses GB/T4132 and the following definitions.
Rigid extruded polystyrene foam board
A rigid foam having a closed cell structure obtained by heating and extrusion molding using a polystyrene resin or a copolymer thereof as a main component and adding a small amount of an additive.
classification
1, category
1.1 The compression strength of households and skins are divided into the following ten categories.
a) X150—p≥150kPa with a skin;
b) X200—p≥200kPa with a skin;
c) X250—p≥250kPa with a skin;
d) X300—p≥300kPa with a skin;
e) X350—p≥350kPa with a skin;
f) X400—p≥400kPa with skin;
g) X450—p≥450kPa with a skin;
h) X500—p≥500kPa with skin;
i) W200—p≥200kPa without skin;
j) W300—p≥300kPa without skin.
Note: Other surface structure products are agreed upon by the supplier and the buyer.
1.2 According to the product edge structure, it is divided into the following four types.
1.2.1 SS flat head product
1.2.2 SL type products (lap joint)
1.2.3 TG type products (grooves)
1.2.4 RC type product (rain tank)
2, product mark
2.1 Marking method
2.1.1 Marking order: product name - category - edge structure form - length × width × thickness - standard number.
2.1.2 The edge structure is represented by the following code:
The edge structure type representation method: SS means four-side flat head; SL means two long-side overlap; TG means that two long sides are groove-type; RC means that two long sides are rain-slot type. Special instructions are required for four-sided, four-sided or four-sided rain gutters.
2.2 Tag example
The extruded polystyrene board labeled as X250, the edge structure is two long sides, the length of 1200mm, the width of 600mm, and the thickness of 50mm is indicated as: XPS-X250-SL-1200×600×50-GB/T10801.2.
Claim
1, size and tolerance
1.1 Specifications
The main specifications of the products are shown in Table 1. Other specifications are agreed by the supplier and the buyer, but the allowable deviations shall comply with the requirements of Table 2.
Table 1 Specifications Dimensions Unit: mm
length
width
thickness
1200, 1250, 2450, 2500
600,900,1200
20,25,30,40,50,75,100
1.2 Allowable deviation
The allowable deviation shall comply with the requirements of Table 2.
Table 2 allowable deviation unit: mm
Length and width L
Thickness h
Diagonal difference
Size L
Allowable deviation
Size h
Allowable deviation
Size T
Diagonal difference
L<100
1000≤L<2000
L≥2000
±5
±7.5
±10
h<50
H≥50
±2
±3
T<100
1000≤T<2000
T≥2000
5
7
13
2, appearance quality
The surface of the product is flat, free of inclusions and uniform in color. There should be no visible defects that significantly affect the use, such as blistering, cracking, deformation, etc.
3, physical and mechanical properties
Product service Four-headed sheep French physical and mechanical properties should meet the requirements of Table 3.
Table 3 physical and mechanical properties
project
unit
Performance
With epidermis
Without epidermis
X150
X200
X250
X300
X350
X400
X450
X500
W200
W200
Compressive strength
kPa
≥150
≥200
≥250
≥300
≥350
≥400
≥450
≥500
≥200
≥300
Water absorption, water immersion 96h
% (shock ratio)
≤1.5
≤1.0
≤2.0
≤1.5
Moisture permeability coefficient 23 ° C ± 1 ° C; RH50% ± 5%
Ng/(msPa)
≤3.5
≤3.0
≤2.0
≤3.5
≤3.0
Thermal insulation
Thermal resistance thickness 25mm average temperature
10 ° C
25°C
(m2·K)/W
≥0.89
≥0.83
≥0.93
≥0.0.86
≥0.76
≥0.71
≥0.83
≥0.78
Average coefficient
10 ° C
25°C
W/(m·K)
≤0.028
≤0.030
≤0.027
≤0.029
≤0.033
≤0.035
≤0.030
≤0.032
Dimensional stability 70 ° C ± 2 ° C 48h
%
≤2.0
≤1.5
≤1.0
≤2.0
≤1.5
4, combustion performance
According to GB/T8626 for inspection, according to GB8624 classification should reach B2.
experiment method
1, aging and state adjustment
The thermal conductivity and thermal resistance test shall be carried out under ambient conditions for 90 days from the date of production. Other physical and mechanical properties tests shall be carried out after the sample has been placed under ambient conditions for 45 days from the date of production. The state shall be adjusted before the test. Except for special provisions in the test method, the test environment and the state of the sample shall be adjusted according to the 23/50 secondary environmental conditions in GB/T 2918-1998.
2. Description of the surface characteristics of the test piece
When the test piece is not tested with the skin, the condition shall be recorded in the test report.
3. Preparation of test pieces
Except for the inspection of size and appearance, the test pieces shall be cut at a distance of 20 mm from the edge of the sample for the preparation of all other test pieces. The test piece can be cut by a heating wire.
4, size measurement
Dimensional measurement is carried out according to GB/T6342. The average length, width and thickness are taken as the average of 5 points.
5, appearance quality
The appearance quality was visually observed under natural light conditions.
6, compression strength
The compressive strength test was carried out in accordance with GB/T8813. The size of the test piece is (100.0±1.0) mm×(100.0±1.0) mm×original thickness. For products with a thickness greater than 100 mm, the length and width of the test piece should not be lower than the thickness of the product. The loading speed is 1/10 (mm/min) of the thickness of the test piece, for example, a product having a thickness of 50 mm, and the loading speed is 5 mm/min. The compressive strength is the average of the test results of the five test pieces.
7, water absorption rate
The water absorption test was carried out according to GB/T8810, the water temperature was (23±2) °C, and the water immersion time was 96h. The size of the test piece was (150.0 ± 1.0) mm × (150.0 ± 1.0) mm × original thickness. The water absorption rate is the average of the test results of the three test pieces.
8, moisture permeability coefficient
The moisture permeability test shall be carried out according to QB/T2411. The temperature of the test chamber (or constant temperature and humidity chamber) shall be (23 ± 1) C and the relative humidity shall be 50% ± 5%. The moisture permeability coefficient is the average of the test results of the five test pieces.
9, thermal insulation performance
The thermal conductivity test is carried out according to GB/T10294, and can also be carried out according to GB/T10295. The average temperature is measured at (10±2) °C and (25±2) °C, and the test temperature difference is 15 °C ~ 25 °C. The arbitration shall be conducted in accordance with GB/T10294.
The thermal resistance value is calculated according to formula (1):
R = (h/λ) ..........................................(1)
Where: R - thermal resistance, (m2 · K) / W;
h — thickness, m;
λ - thermal conductivity, W / (m · K).
10, dimensional stability
The dimensional stability test was carried out according to GB/T8811, and the test temperature was (70±2), measured after 48 hours. The size of the test piece was (100.0 ± 1.0) mm × (100.0 ± l. 0) mm × original thickness. Dimensional stability The average value of the absolute values ​​of the test results of the three test pieces was taken.
11, combustion performance
The combustion performance test is carried out according to GB/T8626, and the classification is determined according to GB8624.
testing regulations
1, factory inspection
1.1 The product must be factory tested when it leaves the factory.
1.2 Inspection items for factory inspection are: size, appearance, compressive strength, and thermal insulation performance.
1.3 Group batch: 300m3 of the same category and the same specification of the factory are batched, and less than 300m3 is counted in batches.
1.4 Sampling: Size and appearance Randomly take 6 samples for inspection. The compressive strength is taken from 3 samples for inspection. The adiabatic performance is taken by two samples for inspection.
1.5 Dimensions, appearance, compressive strength and thermal insulation properties shall be inspected in accordance with the test methods specified in Chapter 6. The test results shall comply with the provisions of Chapter 5. If two indicators fail, the batch is rejected. If only one indicator (single value) is unqualified, the sample should be doubled. If one of the retest results (single block value) is unqualified, the batch of products is judged to be unqualified.
1.6 Group approval, sampling and determination rules for factory inspections may also be carried out in accordance with corporate standards.
2, type inspection
2.1 Type inspection should be carried out in one of the following cases.
a) new product type identification;
b) After the formal production, the raw materials and processes have undergone major changes, which may affect the performance of the products;
c) at least once a year during normal production;
d) When the factory inspection result is significantly different from the previous type inspection;
e) When the product is discontinued for more than 6 months, the product will be resumed.
2.2 The inspection items for type inspection are the requirements specified in Chapter 5: size, appearance, compressive strength, water absorption, moisture permeability coefficient, thermal insulation performance, combustion performance, dimensional stability.
2.3 Type inspection The samples shall be randomly selected from the qualified products in the factory warehouse. One sample for each performance test shall be taken and tested according to the test method specified in Chapter 6. The inspection results shall comply with the provisions of Chapter 5.
Logo, label, instruction manual
It should be indicated on the label or instruction manual:
a) product name, product mark, trademark;
b) name and detailed address of the manufacturing company;
c) the type, specifications and main performance indicators of the product;
d) date of manufacture;
e) Indicate the warning or icon that guides safe use. For example: the combustion performance level of this product is B2, and should be kept away from fire source during use;
f) The number of products in the packaging unit.
Logo text and graphics should be eye-catching, easy to identify, and have a certain durability.
Packaging, transportation, storage
1. The product needs to be packaged with shrink film or plastic strap, or negotiated between the supplier and the buyer. When transported to other cities, the packaging needs to meet the transportation requirements.
2. The products should be stacked separately according to the category and specifications to avoid heavy pressure, and the warehouse should be kept dry and ventilated.
3. Keep away from fire, heat and chemical solvents during transportation and storage, avoid sun exposure, wind and rain, and avoid long-term http://news.chinawj.com.cn
Submission:
We also offer Special Balls, including Coated Balls, rubber-coated steel balls, Solid Half Balls, Flying Saucer Balls, etc.
Special Balls,Special Golf Balls,Specialty Golf Balls,Special Ball
CHANGZHOU HUARI STEEL BALL CO., LTD. , https://www.stwballs.com