Properties Comparison of North American Particleboard · PDF file · 2015-09-07Properties Comparison of North American Particleboard ... Gathering Sample Panels ... Screw Withdrawal

Wood-Based Composites Center October 11th, 2013

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Properties Comparison of North American Particleboard

Jörn Dettmer, University of British Columbia E: [email protected] T: 1.(604) 822-2749

Greg Smith, University British Columbia E: [email protected] T: 1.(604) 822-0081


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Properties Comparison of North American PB - Outline

Outline

Rationale Background Industry Survey • Methods • Results Properties Comparison • Materials and Methods • Results

Summary


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Properties Comparison of North American PB - Rationale

Rationale

Advancements in production technology of PB suggest change in board properties

Key objectives of this study:

Industry Survey • Identify panel characteristics, furnish compositions,

resin delivery systems, and mechanical and physical board properties

Panel Properties Evaluation

• Identify Industry Collaborators to provide board samples • Obtain physical and mechanical board properties • Compare participating mills with one another and with

previous studies


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Properties Comparison of North American PB - Background

Background

Comparative studies of particleboard

Temple-Inland Panel Products (Bautista 1994, Zhang 1994) • Particleboard from 25 mills in the United States

Cassens et al. (1994)

• Seven different U.S. mills with 3/8-inch M2 grade particleboard

Semple et al. (2005a)

• Six Canadian plants producing 5/8” M2 grade particleboard

Semple et al. (2005b) • Comparison study of MS and M2 grade PB from two

Canadian manufacturers


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Properties Comparison of North American PB - Industry Survey - Methods

Industry Survey

Methods Development of online questionnaire with 25 questions 63 MDF and PB plants were contacted 19 plants completed the survey between June 29th and August 12th, 2011 (adjusted response rate of 32.7%)


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Properties Comparison of North American PB - Industry Survey - Results

Industry Survey Results

Resin costs - Please check one option:

Resin costs are a major (>50%) part of raw material costs Resin costs are a major (>50%) part of raw material costs Resin costs are a major (>50%) part of raw material costs

7

10


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MUF (1)

UF, 1

MUF/UF, 5

NAUF/UF (1)

PF (1)

pMDI (1)

MUF

UF

MUF/UF

NAUF/MUF

PF

pMDI

What types of resin do you use and which one is most commonly used?


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Are you considering other resination systems?

3 16


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Do you verify the efficiency of the resination (particle/fibre coverage)?

6

13


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Do you think the resination process can be improved?

3

16


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Properties Comparison of North American PB - Properties Comparison - Materials

Properties Comparison Materials - Gathering Sample Panels

• PB manufacturers were asked during the survey to further participate in the study

• Request for five 4’ by 8’ boards: 5/8” thick M2 grade • Three PB manufacturers from the survey provided sample

sets • One set of PB was obtained from a local building supplies

store • One with the support of the technical industry advisors • Total of 5 PB sets


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Properties Comparison of North American PB - Properties Comparison - Methods

Methods - Properties of Interest

Property Specimen

ID

Number of samples per

Manufacturer Panel Sub-panel

IB & VDP 1 40 8 4

Thickness Swelling 2 40 8 1

MOE/MOR ‖ 3 40 8 1

MOE/MOR ⊥ 4 40 8 1

fSWR 5 40 8 1

eSWR ‖ 6 40 8 1

eSWR ⊥ 7 40 8 1

Linear Expansion ‖ 8 40 8 1

Linear Expansion ⊥ 9 40 8 1


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Methods – Sample Preparation

• Each panel was cut into 8 sub-panels

• Eight different

cutting patterns were designed

• One of eight

cutting patterns was randomly assigned to each sub-panel


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Methods – Sample Preparation

Processed board after CNC cutting process

3D model of the sub-panel

Labeling the sub-panel before cutting

Spoil board with drill pattern for vacuum


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Methods – Testing Conditioning

• According to ASTM D1037 – 06a: 20 ± 1°C and 65 ± 5% relative humidity

Testing • According to ASTM D1037 – 06a


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Results

VDP - Manufacturer A VDP - Manufacturer C

0

200

400

600

800

1000

1200

0 5 10 15 20

den

sity

(kg/m

3)

thickness (mm)

0

200

400

600

800

1000

1200

0 5 10 15 20den

sity

(kg/m

3)

thickness (mm)

Properties Comparison of North American PB - Properties Comparison - Results


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Results

0.0

0.1

0.2

0.3

0.4

0.5

0.6

A C D E Fin

tern

al b

on

d (

MP

a)

manufacturers

ANSI A208.1-1999 (M2) LSD = 0.03

Vertical Density Profile Internal Bond

S1

S1

S1 S1

S1

C C

C

C C

S2

S2

S2 S2

S2

450

550

650

750

850

950

1050

1150

A C D E F

den

sity

(kg/m

3)

manufacturers

LSD (S) = 14.06

LSD (C) = 14.42



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Results

Thickness Swell (2/24 hr) Water Absorption (2/24 hr)

0

5

10

15

20

25

30

A C D E F

thic

knes

s sw

ell

(%)

manufacturers

0

10

20

30

40

50

60

A C D E F

wat

er a

bso

rpti

on

by w

eigh

t (%

)

manufacturers


2

24

2

24


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Screw Withdrawal Resistance (face)

0

200

400

600

800

1000

1200

1400

A C D E F

fSW

R (

N)

manufacturers

ANSI A208.1-1999 (M2) LSD = 51.8

bb

a

d

c

0

200

400

600

800

1000

1200

A C D E F

eSW

R (

N)

manufacturers

ANSI A208.1-1999 (M2)

a a a

bb

Screw Withdrawal Resistance (edge)



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fSWR – Peak Face Density fSWR – Core Density

y = 2.12x - 1050.53

R² = 0.64

0

200

400

600

800

1000

1200

1400

1600

750 850 950 1050

f S

WR

(N

)

peak face density

y = 1.84x - 79.75

R² = 0.28

400

600

800

1000

1200

1400

450 500 550 600 650 700 750

f S

WR

(N

)

core density


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Modulus of Rupture Modulus of Elasticity

⊥ ⊥ ⊥ ⊥ ⊥‖ ‖ ‖ ‖ ‖0.0

2.0

4.0

6.0

8.0

10.0

12.0

14.0

16.0

18.0

A C D E F

MO

R (

MP

a)

manufacturers

e e

b b

a a

d dc

d

LSD = 0.58

ANSI A208.1-1999 (M2)

⊥ ⊥ ⊥ ⊥ ⊥‖ ‖ ‖ ‖ ‖0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

A C D E F

MO

E (

GP

a)

manufacturers

f

d e

b b

ab

e d ec

d

LSD = 0.1ANSI A208.1-1999 (M2)


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Properties Comparison of North American PB - Properties Comparison - Summary

Summary • One manufacturer had consistently lower properties than

the other manufacturers

• None of the evaluated manufacturers met the voluntary ANSI standard for eSWR

• The best correlation was found between fSWR and peak density

• None of the evaluated manufacturers met the voluntary

ANSI standard for MOR


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Properties Comparison of North American PB

Thank you!

Documents

Properties Comparison of North American Particleboard · PDF file · 2015-09-07Properties Comparison of North American Particleboard ... Gathering Sample Panels ... Screw Withdrawal