Low-smoke low-toxicity halogen-free flame-retardant resin as well as preparation method and application thereof

A technology of flame retardant resin and flame retardant, which is applied in the field of low-smoke, low-toxicity, halogen-free flame retardant resin and its preparation, can solve the problems of poor long-term flame retardant performance and mechanical properties, large smoke and high toxicity, and achieve Good RTM process practicability, improve thermal denaturation stability, and ensure the effect of anti-oxidative aging

Active Publication Date: 2021-05-28
镇江利德尔复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the problems of high toxicity, large use of flue gas and poor long-term flame retardancy and mechanical properties in the prior art, the present invention provides a low-smoke, low-toxicity, halogen-free flame-retardant resin with good long-term flame retardancy and mechanical properties And its preparation method and application

Method used

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  • Low-smoke low-toxicity halogen-free flame-retardant resin as well as preparation method and application thereof
  • Low-smoke low-toxicity halogen-free flame-retardant resin as well as preparation method and application thereof
  • Low-smoke low-toxicity halogen-free flame-retardant resin as well as preparation method and application thereof

Examples

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preparation example Construction

[0033] In some preferred embodiments, the preparation method of the matrix resin comprises the following steps: (1) put the weighed glycol, saturated dibasic acid or acid anhydride into the reactor, and rapidly heat up to 160-200°C; (2) Then increase to 200-220°C at a rate of 2-3°C per 10 minutes, cool down to 60-90°C after the material is transparent, add unsaturated acid anhydride, and heat up to 200-200°C after the material is exothermic 220°C, maintain for a certain period of time, then cool down to 70-80°C, slowly add styrene and additives; (3) Then increase nitrogen, stir the reaction to a suitable acid value, cool down and stop.

[0034] In some preferred embodiments, the dihydric alcohol is at least one of ethylene glycol, propylene glycol, pentanediol, and dipropylene glycol; the unsaturated acid anhydride is maleic anhydride, fumaric anhydride at least one of; the saturated dibasic acid or acid anhydride is at least one of phthalic acid, isophthalic acid, terephthalic ...

Embodiment 1

[0055] Embodiment 1 The first aspect provides a low-smoke, low-toxicity, halogen-free flame-retardant resin, the raw materials include the following parts by weight: 100 parts of matrix resin, 0.1 part of cobalt isooctanoate, 0.01 part of p-tert-butylcatechol, diethylphosphoric acid di 15 parts of ethyl ester.

[0056] In the present embodiment, the raw material of base resin comprises the following parts by weight: 25 parts of ethylene glycol, 171 parts of propylene glycol, 97 parts of maleic anhydride, 152 parts of phthalic anhydride, 205 parts of styrene, 30 parts of additives ( Hydroquinone and diphenylamine, weight ratio 2:1).

[0057] In the present embodiment, the preparation method of matrix resin comprises the following steps: (1) 25 parts of ethylene glycol that weighs, 171 parts of propylene glycol, 152 parts of phthalic anhydrides are put into reaction kettle, under nitrogen protection, quickly Raise the temperature to 175°C; (2) then raise the temperature to 210°...

Embodiment 2

[0063] The specific implementation method of the present embodiment is the same as that of Example 1, except that the propylene glycol is 150 parts.

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Abstract

The invention discloses low-smoke low-toxicity halogen-free flame-retardant resin as well as a preparation method and application thereof. The low-smoke low-toxicity halogen-free flame-retardant resin is prepared from the following main raw materials in parts by weight: 80-120 parts of matrix resin, 0.05-0.2 part of accelerant, 0.01-0.1 part of polymerization inhibitor and 10-20 parts of flame retardant. Through preparation of matrix resin, selection of a special flame retardant and an auxiliary agent and limitation of the mass ratio of the matrix resin, the flame retardance and oxidation aging resistance of the flame-retardant resin are effectively improved, the flame-retardant resin has appropriate resin viscosity and excellent RTM process practicability, and a casting body prepared and formed by using an RTM process has good mechanical properties, and is suitable for popularization in the field of organic resin and has a wide development prospect.

Description

technical field [0001] The invention belongs to the field of organic resins, and in particular relates to a low-smoke, low-toxicity, halogen-free flame-retardant resin and its preparation method and application. Background technique [0002] The resin transfer molding process (Resin Transfer Molding, RTM) has been widely used in ships, military facilities, national defense engineering, transportation, aerospace and civil industries due to its excellent process performance. Its main features are as follows: (1) It has strong flexibility in mold manufacturing and material selection, and flexible equipment selection; (2) It can manufacture complex parts with good surface quality and high dimensional accuracy, and has more obvious advantages in the manufacture of large parts; ( 3) It is easy to realize local reinforcement and sandwich structure; it is easy to flexibly adjust the type and structure design of reinforcement materials to meet the requirements of different performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/01C08F212/08C08K5/521C08G63/52
CPCC08F283/01C08K5/521C08G63/52C08F212/08
Inventor 谢富平窦南南吴飞
Owner 镇江利德尔复合材料有限公司
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