What is the cause of cracking and deformation of phenolic boards?
Phenolic board is one of the commonly used insulation board, in the use
of both convenient and affordable, has been recognized by many
customers, we must pay attention to the use of the right method,
otherwise easy to crack deformation, then what is the specific cause and
we now tell you, together Let's see.
Phenolic insulation board also
known as fire-resistant board, high-pressure decorative board, formerly
known as thermosetting resin impregnated paper high-pressure decorative
laminated board, abbreviated as HPL. It is made of phenolic resin
impregnated paper as the core (bottom) layer and amino resin (mainly
melamine resin) impregnated paper as the surface layer, after heating
and not less than 5 MPa pressure treatment, the interior decorative
surface material. It has the characteristics of wear resistance, heat
resistance, impact resistance, acid and alkali resistance, smoke
resistance, fire prevention, antimicrobial, mildew resistance and
antistatic. Phenolic insulation board is commonly used in table,
desktop, wall, cupboard, office furniture, cupboard and so on. It is
understood that most of the inferior phenolic insulation board surface
is not wear-resistant layer, and to reduce its brittleness also reduces
the curing time, thus greatly reducing its wear resistance, scratch
resistance and high temperature performance. Poor phenolic insulation
board generally has the following characteristics: uneven color, fragile
burst, simple design, in addition, its heat resistance, acid-base
resistance, wear resistance is also poor.
Taking the phenolic board
table which is the most common one in the market as an example, it is
popular with consumers because of its low price, wear resistance,
scratch resistance, high temperature resistance, radiation resistance,
pollution resistance, impact resistance and easy cleaning. However, at
present, the phenomenon of shoddy and shoddy market is common. In order
to reduce the cost of the inferior phenolic heat preservation board, the
rough colored paper which is imitated from abroad is mostly used.
Because of the inferior ink and poor quality control, the colored paper
is easy to fade and color difference. Moreover, the fiber arrangement
uniformity between the colored paper and kraft paper is poor, resulting
in poor evenness of the final product. What's more, because of the poor
uniformity of fiber arrangement, the internal stress will be unbalanced,
and cause cracking, resulting in product deformation and bubbling. In
addition, because of poor raw materials and backward equipment and
technology, its durability is very low.