Name: 人造板及飾面人造板電子試驗(yàn)機(jī)
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詳細(xì)介紹

人造板及飾面人造板電子試驗(yàn)機(jī)

1.簡(jiǎn)介

該人造板及飾面人造板電子試驗(yàn)機(jī)主要用于檢測(cè)人造板和飾面人造板及其制品的三點(diǎn)和四點(diǎn)靜曲強(qiáng)度和彈性模量,內(nèi)膠合強(qiáng)度,內(nèi)結(jié)合強(qiáng)度,表面膠合強(qiáng)度,膠層剪切強(qiáng)度,耐剝離力,握螺釘力及抗拉強(qiáng)度.

2.試驗(yàn)方法

GB/T17657 人造板及飾面人造板理化性能試驗(yàn)方法test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels

3.試驗(yàn)介紹

3.1三點(diǎn)彎曲強(qiáng)度和彈性模量測(cè)定:

三點(diǎn)彎曲的靜曲強(qiáng)度和彈性模量,是在兩點(diǎn)支撐的試件中部施加載荷進(jìn)行測(cè)定.靜曲強(qiáng)度是確定試件在載荷作用時(shí)的彎矩和抗彎截面模量之比;彈性模量是確定試件在材料的彈性極限范圍內(nèi),載荷產(chǎn)生的應(yīng)力與應(yīng)變之比. 三點(diǎn)彎曲強(qiáng)度和彈性模量測(cè)定示意圖如下:

變形測(cè)量?jī)x置于支承輥中間,測(cè)量試件變形

3.2 四點(diǎn)彎曲靜曲強(qiáng)度和彈性模量測(cè)定

四點(diǎn)彎曲靜曲強(qiáng)度和彈性模量是在兩點(diǎn)支撐的試件上,距支座三分之一處分別施加相同的載茶進(jìn)行測(cè)定.靜曲強(qiáng)度是確定試件在載荷作用時(shí)的彎矩和抗彎截面模量之比;彈性模量是確定試件在材料的彈性極限范圍內(nèi),載荷產(chǎn)生的應(yīng)力與應(yīng)變之比. 四點(diǎn)彎曲靜曲強(qiáng)度和彈性模量試驗(yàn)示意圖如下:

3.3內(nèi)結(jié)合(膠合)強(qiáng)度

內(nèi)膠合強(qiáng)度是試件表面承受均勻分布的拉力,直至破壞時(shí)的抗拉能力的測(cè)定.內(nèi)膠合強(qiáng)度是垂直于試件表面的破壞力的試件面積之比.試樣尺寸為50x50mm. 內(nèi)膠合強(qiáng)度試驗(yàn)示意圖如下:

注: 1------金屬卡頭 2------卡頭(金屬、硬木或硬木膠合板) 3------硬木膠合板卡頭（不適用于薄板） 4------試件 5------自動(dòng)調(diào)心球窩連接 t≥15mm

3.4表面膠合強(qiáng)度測(cè)定-----方法1

表面膠合強(qiáng)度是指板表面層的刨花或纖維與下層材料之間（未飾面板）或飾面材料與基材之間（飾面板）的粘結(jié)強(qiáng)度或粘結(jié)質(zhì)量，用表面層垂直于板面破壞拉力與試件膠合面積之比表示。該方法適用于未飾面的刨花板、纖維板、水泥刨花板以及非單板飾面的人造板。表面膠合強(qiáng)度測(cè)定-----方法1示意圖如下：

3.4表面膠合強(qiáng)度測(cè)定-----方法2 示意圖如下

3.5 膠合強(qiáng)度測(cè)定

膠合強(qiáng)度是通過(guò)拉力載荷使試件的膠層產(chǎn)生剪切破壞，以確定單板類(lèi)人造板的膠合質(zhì)量。試件尺寸為100mm長(zhǎng)，25mm寬。試驗(yàn)時(shí)，把試件兩端夾緊于試驗(yàn)機(jī)的活動(dòng)夾具中，成一直線(xiàn)，試件中心應(yīng)通過(guò)試驗(yàn)機(jī)活動(dòng)夾具的軸線(xiàn)。夾持部位與試件槽口的距離應(yīng)在5mm范圍內(nèi)。

3.6 膠層剪切強(qiáng)度測(cè)定

膠層剪切強(qiáng)度測(cè)定是對(duì)試件逐漸施加壓縮載荷使膠層產(chǎn)生剪切破壞，以確定膠合質(zhì)量。膠層剪切強(qiáng)度測(cè)定示意圖如下：

3.7耐剝離力測(cè)定

耐剝離力用于測(cè)定剝離表面層所需的力，適用于聚氯乙烯薄膜飾面人造板。試樣長(zhǎng)度100mm，寬度25mm.耐剝離力測(cè)定示意圖如下：

3.8 握螺釘力測(cè)定

握螺釘力用于確定拔出擰入規(guī)定深度的自攻螺釘所需的力，握螺釘力測(cè)定示意圖如下：

3.9抗拉強(qiáng)度測(cè)定

抗拉強(qiáng)度用于確定試件拉伸載荷與試件橫截面積之比。抗拉強(qiáng)度試件圖如下：

3.10 順紋抗壓強(qiáng)度測(cè)定

順紋抗壓強(qiáng)度可確定順紋壓縮載荷與試件橫截面積之比，試件長(zhǎng)23mm，寬15mm,厚15mm,長(zhǎng)度方向?yàn)轫樇y方向。

4.試驗(yàn)機(jī)技術(shù)參數(shù)

序號(hào)	項(xiàng)目	規(guī)格
1	試驗(yàn)力	20KN及以下	30/50KN		100KN
2	試驗(yàn)力測(cè)量范圍	1%-99%FS
3	試驗(yàn)力測(cè)量準(zhǔn)確度	優(yōu)于示值±1%
4	橫梁位移測(cè)量精度	0.01mm
5	位移測(cè)量準(zhǔn)確度	±1%
6	變形測(cè)量范圍	0.4%-99%FS
7	變形測(cè)量精度	±0.5%
8	變形分辨率	0.01mm
9	力控速率調(diào)節(jié)范圍	0.005-5%FS/S
10	力控速率相對(duì)誤差	±1%設(shè)定值以?xún)?nèi)
11	變形速率調(diào)節(jié)范圍	0.02-5%FS/S
12	變形控制速率相對(duì)誤差	速率＜0.05％FS時(shí)，為±2%設(shè)定值以?xún)?nèi)；速率≥0.05％FS時(shí)，為±0.5%設(shè)定值以?xún)?nèi)；
13	橫梁速度測(cè)量范圍	0.001-500mm/min
14	橫梁速度相對(duì)誤差	速率＜0.01 mm/min時(shí)，設(shè)定值的±1.0%以?xún)?nèi)；速率≥0.01 mm/min時(shí)，設(shè)定值的±0.2%以?xún)?nèi)；
15	恒力、恒變形、恒位移控制范圍	0.5％～100％FS
16	恒力、恒變形、恒位移控制范圍	設(shè)定值<10%FS時(shí)，設(shè)定值的±1.0%以?xún)?nèi) 設(shè)定值≥10%FS時(shí),設(shè)定值的±0.1%以?xún)?nèi)
17	變形速率控制精度	速率<0.05%FS時(shí)為±2.0%設(shè)定值內(nèi) 速率≥0.05%FS時(shí)為±0.5%設(shè)定值內(nèi)
18	拉伸空間	700mm		700mm	700mm
19	工作環(huán)境	室溫—35℃,相對(duì)濕度不超過(guò)80%
20	整機(jī)電源	單相,220V±10%,50Hz
21	電機(jī)功率	0.75KW		0.75KW	1.5KW
22	主機(jī)尺寸	750x480x1700mm		720x520x1800mm	900x600x2100mm
23	重量	280kg		350kg	450kg

Wood-based panels electronic universal testing machine

1.introductions

This wood-based panels electronic universal testing machine is to measure and determine mechanical properties of wood-based panel and surface decorated wood-based panels for parameter of 3 point and 4 point flexural test strength and elastic modulus, internal bonding strength, surface bonding strength, shear strength of bonding layer, peel force, screw holding force and tensile strength.

2. test method

GB/T17657 test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels

3. test introductions

3.1 three point flexural strength and elastic modulus test

The three point flexural strength and elastic modulus test is to load at the center of test piece supported by two points. Static flexural test is to determine the ratio of bending moment and bending section modulus of test piece under the maximum load. The modulus of elasticity is to determine the ratio of the stress to the strain generated by the load within the elastic limit of the material. Drawing of three point flexural strength and elastic modulus test is as following:

Deformation measuring meter is under the center point of support rollers to measure deformation of test specimen

3.2 Four-point static bending strength and elastic modulus measurement

The four-point static bending strength and elastic modulus are measured on the specimen supported by two points, and the same load is applied at one-third of the distance from the support. The static bending strength is to measure the ratio of bending moment and bending section modulus under maximum load. Elasticity modulus is to determine the ratio of the stress to strain generated by the load within the elastic limit of the material. The schematic diagram of the four-point bending static bending strength and elastic modulus test is as follows:

3.3 internal bonding strength test

The internal bonding strength is the measurement of the tensile strength of the specimen surface with a uniformly distributed tension until failure. The internal bonding strength is the ratio of the specimen area perpendicular to the surface of the test specimen with the maximum destructive force. The specimen size is 50x50mm. The schematic diagram of internal bonding strength test is as follows:

Note: 1------metal chuck 2------chuck(metal , hardwood or hardwood plywood)

3------hardwood plywood chuck(not suitable for thin plate) 4------test piece

5------auto adjusting joint t≥15mm

3.4 Surface bonding strength determination-method 1

Surface bonding strength refers to the bonding strength or bonding quality between the shavings or fibers of the surface layer of the board and the underlying material (not veneer) or between the veneer material and the substrate (veneer). It is expressed as the ratio of maximum breaking tension force perpendicular to the surface board and bonding area. This method is suitable for non-veneered particleboard, fiberboard, cement particleboard and non-veneered wood-based panels. Surface bonding strength determination-Method 1 schematic diagram is as follows:

3.4 Surface bonding strength determination-Method 2. The schematic diagram is as follows

3.5 Bonding strength determination

Gluing strength is the shear failure of the glue layer of the test piece through tensile load to determine the glue quality of the veneer wood-based panel. The size of the test piece is 100mm long and 25mm wide. During the test, clamp both ends of the test piece in the movable fixture of the testing machine to form a straight line. The center of the test piece should pass through the axis of the movable fixture of the testing machine. The distance between the clamping part and the notch of the test piece shall be within 5mm.

3.6 Determination of adhesive layer shear strength

The shear strength of the adhesive layer is measured by gradually applying a compressive load to the specimen to cause shear failure of the adhesive layer to determine the bonding quality. The schematic diagram of the shear strength of the adhesive layer is as follows:

3.7 Determination of peel resistance

Peeling resistance is used to determine the force required to peel off the surface layer, and is suitable for polyvinyl chloride film facing wood-based panels. The length of the sample is 100mm, and the width is 25mm. The schematic diagram of the peel resistance measurement is as follows:

3.8 Screw holding force measurement

The screw holding force is used to determine the force required to pull out a self-tapping screw with a specified depth. The screw holding force measurement diagram is as follows:

3.9 Tensile strength determination

The tensile strength is used to determine the ratio of the maximum tensile load of the specimen to the cross-sectional area of the specimen. The tensile strength test piece diagram is as follows:

3.10 Determination of compressive strength along the grain

The compressive strength along the grain can determine the ratio of the maximum compressive load along the grain to the cross-sectional area of the specimen. The specimen is 23mm long, 15mm wide, 15mm thick, and the length direction is along the grain direction.

4. technical parameters

No	Item	Specification
1	Force capacity	20KN and lower	30/50KN	100KN
2	Measuring range	1%-99%FS
3	Accuracy of force value	Less than ±1% of set value
4	Precision of displacement	0.01mm
5	Accuracy of displacement value	±1%
6	Deformation measuring range	0.4%-99%FS
7	Accuracy of deformation measuring	±0.5%
8	Resolution of deformation	0.01mm
9	Force speed range	0.005-5%FS/S
10	Accuracy of force speed	Less than ±1% of set value
11	Deformation speed range	0.02-5%FS/S
12	Accuracy of deformation speed control	When set value is less than 0.05%FS，error is less than ±2.0% of set value When set value is more than 0.05%FS，error is less than ±0.5% of set value
13	Displacement speed range	0.001-500mm/min
14	Accuracy of displacement speed	When speed is less than 0.01mm/min，error is less than ±1.0% of set value When set value is more than 0.01mm/min，error is less than ±0.2% of set value
15	Range of constant force, constant deformation, constant displacement control	0.5％～100％FS
16	Accuracy of constant force, constant deformation, constant displacement control	When set value is less than 10%FS，error is less than ±1.0% of set value When set value is more than 10%FS，error is less than ±0.1% of set value
17	Accuracy of deformation speed	When set value is less than 0.05%FS，error is less than ±2.0% of set value When set value is more than 0.05%FS，error is less than ±0.5% of set value
18	Tension space	700mm	700mm		700mm
20	Voltage	Single phase,220V±10%,50Hz(110V)
21	Motor power	0.75KW	0.75KW		1.5KW
22	Dimension	750x480x1700mm	720x520x1800mm		900x600x2100mm
23	Weight	280kg	350kg		450kg