SU429967A1 - METHOD FOR FASTENING RUBBER FROM BUTADIENE-STYRENE AND BUTADIENE RUBBERS TO WOOD MATERIALS P T 5 Fneddttt - Google Patents

Description

one

There is a method of attaching rubber to various materials with nairit glue.

However, when attaching styrene-butadiene and butadiene-rubber rubbers to wood materials, low bonding strength is achieved.

In order to increase bonding strength, the surface of wood material is proposed to be pretreated with 1-: 5% aqueous solution of potassium biochromate.

For this, according to the proposed method, an aqueous solution of potassium dichromate of a specified concentration is prepared and the glued surface of wooden boards or plywood is treated with them at 50-70 ° C. The treated surface is dried. Apply the first layer of glue to the surfaces to be glued and dry it. Then a second layer of glue is applied on the same surfaces and dried to a tack-free finish. The surfaces to be glued are joined and rolled by a roller at a pressure of up to 3 kgf per 1 cm of the length of the roller. .

According to the proposed method, wood materials, such as pine boards, plywood, are attached to rubber from styrene-butadiene and butadiene rubbers, for example, SKMS-30, ARKM-15.

Nairit glue, such as 88-H, 78-BCC, is used as the adhesive.

Example. Take rubber, the composition of which is given n table. one.

Table 1

Rubber is applied with nairit glue to wood materials not treated and treated with potassium dichromate.

The test results of the bond strength of the materials during peeling are given in Table. 2

table 2

Note. The increase in strength in percent is given in brackets.

Subject invention

A method of attaching styrene-butadiene and butadiene rubbers to wood materials with nairit glue, characterized in that, in order to increase the bonding strength, the surface of the wood material is pretreated with a 1-5% aqueous solution of potassium dichromate.