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Modified thermoset type quick solidified phenol-formaldehyde resin

A technology of phenolic resin and phenolic resin solution, which is applied in the field of modified thermosetting fast-curing phenolic resin, can solve the problems of fishing rod production efficiency and cost reduction, large mold investment, and long production cycle, so as to reduce mold input , Improve production efficiency and save energy consumption

Inactive Publication Date: 2007-02-21
威海市望岛渔具专用配套总厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the production process of fishing rod baking and shaping, there is a long production cycle. The curing cycle of ordinary thermosetting phenolic resin is generally 3 hours. The disadvantages of large investment in molds and high energy consumption seriously restrict the production efficiency of fishing rods. and cost reduction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Mix 930 kg of A-stage resin and 70 kg of curing agent urotropine and stir at room temperature for 20 to 30 minutes to obtain a modified thermosetting fast-curing phenolic resin. Urotropine is also known as hexamethylenetetramine or hexa(methylene)tetramine, H-promoter, Hexa. The A-stage resin in this embodiment is the A-stage phenolic resin solution (solid content: 45% ~ ~ 75%) in the background technology, which is a thermosetting type A-stage phenolic resin formed by the condensation of phenol and formaldehyde catalyzed by alkali (ammonia water). Resin, the solvent is methanol, ethanol or acetone, or its compound solvent combination.

[0017] However, the present invention can only have a reasonable storage period for the obtained modified thermosetting fast-curing phenolic resin and its glass fiber prepreg cloth only when the addition amount of suitable curing agent urotropine is controlled. At the same time, it can not only shorten the baking and shaping time of th...

Embodiment 2

[0019] Mix 909 kg of A-stage resin and 91 kg of curing agent urotropine at room temperature and stir for 20 to 30 minutes to obtain a modified thermosetting fast-curing phenolic resin. Urotropine is also known as hexamethylenetetramine or hexa(methylene)tetramine, H-promoter, Hexa. The A-stage resin in this embodiment is the A-stage phenolic resin solution (solid content: 45% ~ ~ 75%) in the background technology, which is a thermosetting type A-stage phenolic resin formed by the condensation of phenol and formaldehyde catalyzed by alkali (ammonia water). Resin, the solvent is methanol, ethanol or acetone, or its compound solvent combination.

Embodiment 3

[0021] Mix 995 kg of A-stage resin and 5 kg of urotropine as a curing agent and stir at room temperature for 20 to 30 minutes to obtain a modified thermosetting fast-curing phenolic resin. Urotropine is also known as hexamethylenetetramine or hexa(methylene)tetramine, H-promoter, Hexa. The A-stage resin in this embodiment is the A-stage phenolic resin solution (solid content: 45% ~ ~ 75%) in the background technology, which is a thermosetting type A-stage phenolic resin formed by the condensation of phenol and formaldehyde catalyzed by alkali (ammonia water). Resin, the solvent is methanol, ethanol or acetone, or its compound solvent combination.

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PUM

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Abstract

This invention relates to a rapid-curing thermosetting phenol formaldehyde resin, whose raw materials comprise: phenol formaldehyde resin solution 90.9-99.5 wt. % and urotropine 0.5-9.1 wt. %. The resin can be dried at a low temperature for producing glass fiber pre-soaking cloth. The pre-soaking cloth is resistant to damp and cohesion, and easy for usage. The pre-soaking cloth can be used to produce fishing rods, and the process has shorter curing time (from 3 h to 1-2.5 h), thus saving energy and using few molds. Since the addition of urotropine can reduce the water leakage, it can be directly increased to the drying temperature without a low temperature transition to obtain the pre-soaking cloth without bubbles or gel flow, or surface pores.

Description

technical field [0001] The invention relates to the field of organic chemistry, in particular to a modified thermosetting fast-curing phenolic resin. Background technique [0002] We know that thermosetting phenolic resin is one of the important raw materials for the production of glass fiber prepreg for phenolic FRP fishing rods. [0003] For many years, the fishing tackle industry has been using ordinary thermosetting phenolic resins to produce phenolic fiberglass fishing rods. In the production process of fishing rod baking and shaping, there is a long production cycle. The curing cycle of ordinary thermosetting phenolic resin is generally 3 hours. The disadvantages of large investment in molds and high energy consumption seriously restrict the production efficiency of fishing rods. and cost reduction. Therefore, people in the industry call for the early production of fast-curing phenolic resins. [0004] Ordinary thermosetting phenolic resins can be divided into three...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08K5/17
Inventor 佟洪德
Owner 威海市望岛渔具专用配套总厂
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