The adhesive contains the resin component ( A) and the curing agent component (B) separately in two hoses and can be stored for a long period of time. When it is used, it can be cured under the condition of room temperature for 30 minutes after being mixed and tempered according to the specified ratio, so it is called double-pipe quick-drying adhesive. This glue can be used for quick bonding of small areas of metal and non-metallic materials (except polyolefins).
Formulation and preparation :
(a) Formula A formulation and manufacturing method:
1. Formulation : E-51 Bisphenol A Epoxy Resin: 100
Polyvinyl chloride powder ( 3#): 1
Quartz powder ( about 300 mesh): 35
Fumed silica : 1.5
Dioctyl phthalate : 14
Method : (1) According to the formula, the 3 # PVC powder and dioctyl phthalate are placed in a container, heated, stirred, and dissolved at about 145 DEG C to form a homogeneous transparent PVC sol.
( 2) Heat the E-51 bisphenol A epoxy resin to about 140°C, add the polyvinyl chloride sol of about 140°C, keep it warm, stir it well, mix well, and then add quartz powder and fumed silica to stir. Mix well. Then, after the temperature is lowered to room temperature, the hose can be sealed.
(II) Formulations and Preparations of Component B
1. formula
Boron trifluoride glycerine complex : 100
Phosphoric acid : 69 boron trifluoride aniline complex: 100
Diethylene glycol : 200
Fumed silica : 12
2. Method:
( 1) Preparation of boron trifluoride glycerol complex: Take 100 parts of glycerine in a reaction flask, and add 154 parts of boron trifluoride etherate solution at room temperature. After the addition, the temperature of the material is raised to 40-50. The ether was distilled off at °C and the residual ether was removed by vacuum. The product in the flask was boron trifluoride glycerol complex.
( 2) Preparation of boron trifluoride aniline complex: Take 100 parts of aniline and 54 parts of ethyl ether in the reaction flask, and use ice-cold water to maintain the temperature of the material in the bottle at -10°C, stirring constantly, and add 153 parts of drops. The boron trifluoride ether solution was added and the ether was removed by vacuum. Then, the solid product inside the bottle was washed three times with cooled benzene, pulverized and dried to obtain a white solid product as a boron trifluoride aniline complex.
( 3) Preparation of component B: After the formula is measured, the boron trifluoride glycerine complex, the trifluorobiphenylaniline complex plus triethylene glycol are mixed and stirred. Gradually heated to 40-50°C. After the brown-red transparent liquid is formed, phosphoric acid and fumed silica are added in sequence, and the temperature is kept constant at 40-50°C. After mixing, the heating is stopped, and the tube is slightly cooled and then loaded. Sealed in.
Second, explain
1. When used, mix components A and B in a volumetric ratio of 9:1, mix quickly, and bond immediately. At room temperature, it usually cures within half an hour.
2. If the curing time is required to be less than one quarter of an hour, the ( B) component can be formulated as follows :
Boron trifluoride glycerine complex : 100
Phosphoric acid : 48
Boron trifluoride aniline complex : 40
Diethylene glycol : 140
Fumed silica : 8