Polymerization inhibitor and glass fiber reinforced plastic profiled bar comprising same

Abstract

The invention relates to a polymerization inhibitor which comprises the following components in parts by weight: 10 parts of p-tert-butylcatechol, 10 parts of p-benzoquinone and 80 parts of styrene. Meanwhile, the invention further discloses a glass fiber reinforced plastic profiled bar comprising the polymerization inhibitor. The glass fiber reinforced plastic profiled bar comprises 60-70% of glass fibers and 30-40% of a resin formula material, wherein the resin formula material comprises the following components in parts by weight: 100 parts of resin, 10-30 parts of filler, 2-4 parts of a mill base, 0.8-1.5 parts of a release agent, 0.5-1 part of an initiator, 0.5-2 parts of an accelerant, 0.1-0.3 part of an antioxidant and 0.1-0.2 part of the polymerization inhibitor. According to the invention, the gelling time of the resin formula material under a condition of 35-60 DEG C is prolonged, a cross-linking reaction in advance in a resin trough is avoided, and solid particles are prevented from blocking a die port, so that the continuity of production is guaranteed.

Description

technical field [0001] The invention relates to the technical field of FRP extrusion industry, in particular to a polymerization inhibitor and a FRP special-shaped bar containing the polymerization inhibitor. Background technique [0002] In the traditional FRP pultrusion industry, glass fiber materials are mainly used as the main body (accounting for 55-70%), and resin formulations are supplemented (accounting for 30-45%). The glass fiber material is composed of glass fiber, glass fiber mat and polyester surface mat; the resin formula is composed of resin, filler, color paste, release agent, initiator and accelerator. In summer, the production environment of FRP is relatively hot, and the room temperature can reach 35-45°C. Under this condition, the resin formulation will undergo cross-linking reaction in advance in the resin tank, resulting in premature reaction of the resin material before it is put into the mold, resulting in material failure. And the solid particles af...

AI Technical Summary

Problems solved by technology

In summer, the production environment of FRP is relatively hot, and the room temperature can reach 35-45°C. Under this condition, the resin formulation will undergo cross-linking reaction in advance in the resin tank, resulting in premature reaction of the resin material before it is put into the mold, resulting in material failure. And the solid particles after cross-linking will block the mold mouth, resulting in the termination of continuous production. The early reaction of the resin formulation will bring great disadvantages to production. How to prolong the gelation time of the resin material in the trough to achieve continuous production Production is a long-term puzzlement problem for those skilled in the art

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