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High-density melamine molding compound and production method thereof

A melamine molding compound and high-density technology, applied in the field of high-density melamine molding compound and production, can solve the problems of lack of heavy feeling of porcelain, limited use range, low temperature resistance, etc. hot effect

Active Publication Date: 2014-08-13
DEQING LIANCHENG AMINO PLASTIC PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing melamine molding compound has a small specific gravity, and the specific gravity of ordinary melamine plastic is about 1.5 mg / cm3, which lacks the thickness of porcelain and is not high in temperature resistance, thus limiting its application range

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1: a kind of high-density melamine molding compound of the present invention, it is made up of following component and weight percentage ratio: 58.1% melamine formaldehyde resin, 40% barium sulfate, 0.5% lubricant, 0.1% Curing agent, 1.0% titanium dioxide, 0.3% pigment.

[0043] The preparation method of the present invention, it comprises:

[0044] 1) Preparation of melamine formaldehyde resin: a) Reaction: Add 500 parts of 37% formaldehyde solution into the reaction pot, adjust the pH value to 8.5, add 400 parts of melamine, heat up to 90°C and react to the end;

[0045] b) Kneading: lower the temperature to 70°C and put it into a kneader, add 200 parts of wood pulp and 20 parts of barium sulfate for kneading, and dry in an oven;

[0046] c) Drying: use a mesh belt type hot air oven, dry with hot air at 85°C, and control the water content below 3.5%, to obtain melamine formaldehyde resin;

[0047] 2) Product preparation: a) Ball milling: Pour the d...

Embodiment 2

[0049] Embodiment 2: a kind of high-density melamine molding compound of the present invention, it is made up of following component and weight percentage ratio: 50% melamine formaldehyde resin, 47.3% barium sulfate, 0.6% lubricant, 0.1% The curing agent, 1.5% titanium dioxide, 0.5% pigment.

[0050] A kind of preparation method of above-mentioned high-density melamine molding compound, this preparation method comprises:

[0051] 1) Preparation of melamine formaldehyde resin: a) Reaction: Add 450 parts of 37% formaldehyde solution into the reaction pot, adjust the pH value to 8, add 350 parts of melamine, heat up to 85°C and react to the end;

[0052] b) Kneading: lower the temperature to 65°C and put it into a kneader, add 180 parts of wood pulp and 15 parts of barium sulfate for kneading, and then dry in an oven;

[0053] c) Drying: use a mesh belt type hot air oven, dry with hot air at 80°C, and control the moisture content below 3.5%, to obtain melamine formaldehyde re...

Embodiment 3

[0056] Embodiment 3: a kind of high-density melamine molding compound of the present invention, it is made up of following component and weight percentage ratio: melamine formaldehyde resin of 69%, barium sulfate of 30.15%, 0.3% lubricant, 0.05% Curing agent, 0.5% titanium dioxide.

[0057] Melamine formaldehyde resin 69%,

[0058] Barium sulfate 30.15%,

[0059]Lubricant 0.3%

[0060] Curing agent 0.05%,

[0061] Titanium dioxide 0.5%,

[0062] A kind of preparation method of above-mentioned high-density melamine molding compound, this preparation method comprises:

[0063] 1) Preparation of melamine formaldehyde resin: a) Reaction: Add 550 parts of 40% formaldehyde solution into the reaction pot, adjust the pH value to 9, add 450 parts of melamine, heat up to 95°C and react to the end;

[0064] b) Kneading: lower the temperature to 75°C and put it into a kneader, add 220 parts of wood pulp and 25 parts of barium sulfate to knead, and then enter the o...

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Abstract

The invention provides a high-density melamine molding compound and a production method thereof. The high-density melamine molding compound comprises the following components in percentage by weight: 50-69% of melamine formaldehyde resin, 30-50% of barium sulfate, 0.3-0.6% of lubricant, 0.05-0.1% of curing agent, 0.5-1.5% of titanium dioxide and 0-0.5% pigment. The production method comprises the following steps: (1) preparation of the melamine formaldehyde resin, to be specific, (a) adding 450-550 parts of formaldehyde solution with the concentration of 35-40% to a reaction vessel, adjusting the pH value to 8-9, adding 350-450 parts of melamine, heating to 85-95 DEG C, and reacting till ending, (b) cooling to 65-75 DEG C, putting in a kneading machine, adding 180-220 parts of wood pulp and 15-25 parts of barium sulfate, kneading, feeding into a drying oven, and drying, and (c) using a mesh-belt type hot air drying oven for drying with hot air at the temperature of 80-90 DEG C, and controlling moisture below 3.5%, thus obtaining the melamine formaldehyde resin; and (2) preparation of the product, to be specific, (a) pouring a dry material into a ball mill, adding other auxiliary materials according to a formula, carrying out ball milling for 6-12 hours, thickening and matching colors, and (b) levigating the material, sieving by using a 35-45 mesh sieve, then packaging by using lining thin film paper bags, and storing the finished product in environments below 25 DEG C.

Description

technical field [0001] The invention relates to a high-density melamine molding compound and a production method, and belongs to the technical field of imitation porcelain materials and production methods. Background technique [0002] The existing melamine molding compound is made of melamine-formaldehyde resin as the base material, wood pulp fiber as the filler, adding curing agent, lubricant, pigment and mixing to make powdery molding compound, which is molded and pressed to form a specific product. And the surface of the produced products is flat, non-toxic, tasteless, and drop-resistant, and is widely used in tableware, daily necessities, electrical products, etc. However, the existing melamine molding compound has a small specific gravity, and the specific gravity of ordinary melamine plastic is about 1.5 mg / cm3. It lacks the thick feeling of porcelain, and its temperature resistance is not high, thus limiting its application range. Contents of the invention [0003...

Claims

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Application Information

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IPC IPC(8): C08L61/28C08K3/30C08K3/22
Inventor 严明亮
Owner DEQING LIANCHENG AMINO PLASTIC PROD CO LTD
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