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Melamine formaldehyde mould plastic and preparation method thereof

A technology of melamine formaldehyde and melamine, which is applied in the field of polymer synthesis and modification, can solve problems such as unreachable heat resistance, and achieve the effects of improved brittleness, excellent heat resistance and dimensional stability

Active Publication Date: 2015-03-25
沙县宏盛塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the heat resistance of this material still cannot reach the phenolic molding compound prepared under the same conditions. At the same time, the heat resistance of the phenolic molding compound also needs to be further improved. For example, CN101665613B provides a kind of high temperature baking resistant phenolic molding compound, including Additives also include phenolic resin, wood powder, mineral filler, urotropine, phosphoric anhydride, acrylate nanoparticles or silicone rubber nanoparticles, and disclose a method for preparing a high-temperature baking-resistant phenolic molding compound. The invention prepares Phenolic molding compound baked at 250°C for 2 hours without cracking, blistering or deformation
[0005] Therefore, the heat resistance of the melamine formaldehyde molding compound prepared by the prior art still needs to be further improved

Method used

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  • Melamine formaldehyde mould plastic and preparation method thereof
  • Melamine formaldehyde mould plastic and preparation method thereof
  • Melamine formaldehyde mould plastic and preparation method thereof

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preparation example Construction

[0054] Concretely, the preparation method of the melamine formaldehyde molding compound of the embodiment of the present invention comprises the following steps:

[0055] (1) Kneading: Take the boron-modified melamine formaldehyde resin, reinforcing fiber, inorganic filler, curing agent, accelerator, coupling agent and release agent, and knead at a temperature of 60-80°C for 20-40 minutes, obtain a homogeneous mixture;

[0056] (2) Masticating: The mixture obtained in step (1) is plasticized using a double-roller open mill. The temperature of the front roller of the open mill is 80-110°C, and the temperature of the rear roller is 130-150°C. 10-20 minutes to obtain melamine formaldehyde molding compound.

[0057] In addition, the present invention also provides a kind of preparation method of above-mentioned boron modified melamine formaldehyde resin:

[0058] First, the organic boron compound and formaldehyde are reacted under alkaline conditions to generate methylolated org...

Embodiment

[0086] The amount of each component in Table 1, Table 2 and Table 3 is expressed as a percentage of the total weight of the molding compound.

[0087] According to the formula of the melamine formaldehyde molding compound of embodiment 1~6 shown in table 1 and table 2 and comparative example 1~3 in table 3, prepare melamine formaldehyde molding compound according to the following method:

[0088] (1) Kneading: Weigh boron-modified melamine formaldehyde resin, reinforcing fiber, inorganic filler, curing agent, accelerator, coupling agent and release agent, and knead at 60-80°C for 20-40 minutes to obtain a uniform Mixture;

[0089] (2) Masticating: The mixture obtained in step (1) is plasticized using a double-roller open mill. The temperature of the front roller of the open mill is 80-110°C, and the temperature of the rear roller is 130-150°C. 10-20 minutes to obtain melamine formaldehyde molding compound.

[0090] In table 1 and table 2, the boron modified melamine formalde...

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Abstract

The invention provides a melamine formaldehyde mould plastic and a preparation method thereof. The preparation method comprises the following steps: by adopting boron-modified melamine formaldehyde resin as matrix resin, adding reinforced fibers, inorganic filler and auxiliaries, and performing a kneading process and a plastifying process, thereby preparing the melamine formaldehyde mould plastic. The melamine formaldehyde mould plastic prepared by the preparation method disclosed by the invention has excellent heat resistance and dimension stability as well as relatively good mechanical performance.

Description

technical field [0001] The invention relates to the technical field of polymer synthesis and modification, in particular to a melamine-formaldehyde molding compound and a preparation method thereof. Background technique [0002] Melamine-formaldehyde molding compound is a high-performance composite material, which is prepared through a certain plasticization process with melamine-formaldehyde resin as the matrix, organic or inorganic fillers as reinforcements, and various additives. The performance of the resin matrix has an important influence on the performance of the molding compound. Compared with the phenolic molding compound, because the melamine formaldehyde matrix resin is a colorless and transparent resin, various light-colored molding compounds can be prepared, and the obtained products are bright in color and have good properties. Tracking resistance, and no ammonia gas is generated during the curing process of the molding compound, so it has many outstanding adva...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/32C08L97/02C08K13/04C08K7/14C08K7/10C08K7/06B29B7/00
Inventor 罗建峰黄世俊陈银桂朱光明翟苏宇陈基伟
Owner 沙县宏盛塑料有限公司