An application of a lubricant in preparation of a flame-retardant polystyrene foam material
A technology of polystyrene foam and polystyrene particles, which is applied in the field of foam plastic preparation, can solve the problems affecting the foaming effect, achieve the effects of improving adhesion, improving thermal insulation performance, and reducing costs
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Embodiment 1
[0019] Prepare raw materials according to the composition of raw materials in Table 1 and Table 2:
[0020] Table 1 Composition of raw materials (parts by weight)
[0021]
[0022] Table 2 Phenolic resins used in samples 1-6
[0023]
[0024] Samples S1-S6 were produced according to the following preparation methods:
[0025] (1) Before foaming, soak polystyrene particles in flame retardant a with added lubricant, and dry at 40-60°C for 200-300s at low temperature;
[0026] (2) Pre-expanding the polystyrene particles obtained in step (1) at 0.5-0.6 MPa;
[0027] (3) Mix the polystyrene particles obtained in step (3) with the surfactant, phenolic resin, and foaming agent evenly, then add the flame retardant b and stir evenly, and finally add the curing agent to mix; obtain the mixture;
[0028] (4) Transfer the mixture into the molding machine, steam heating and molding, the steam pressure is 0.04 MPa, and the steam heating time is 10 s, and the flame-retardant polysty...
Embodiment 2
[0045] The physical and mechanical properties of samples S1-S6 and C1 and C2 were tested according to the test method described in "GB / T 10801.1-2002 Thermal Insulation Molded Polystyrene Foam". The results are shown in Table 3.
[0046] Table 3 Physical and mechanical properties of each sample
[0047]
[0048] It can be seen from the data in Table 3 that the polystyrene foam prepared according to the technical solution provided by the present invention has low thermal conductivity, good heat insulation effect, high tensile strength, good mechanical properties, high oxygen index, and high flame retardancy level. Compared with the comparative examples, sample S1 has lower thermal conductivity and better thermal insulation performance; higher compressive strength and better mechanical properties; increased oxygen index and greatly improved flame retardancy.
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Abstract
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