Marbleized rotational moulding special material and preparation method thereof

A technology of imitating marble and special materials, applied in the field of special materials for rotomolding and its preparation, can solve the problems of inconsistent particle size distribution on the inner and outer surfaces, uneven distribution of marble particles, and flowery particles, and achieves a beautiful appearance, broad market prospects, The effect of simple process flow

Inactive Publication Date: 2012-12-05
NANJING JULONG SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional marble-like rotomolding special materials have the phenomenon of uneven distribution of marble particles and particle blooming, or inconsistent particle size distribution on the inner and outer surfaces, and uneven thickness.

Method used

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  • Marbleized rotational moulding special material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The linear low density polyethylene of the present embodiment: melt flow rate 2g / 10min, density 0.925g / cm 3 ;High-density polyethylene: melt flow rate 0.01g / min, density 0.950 g / cm 3 ;

[0019] Formula: A, 63.5% by mass percentage of linear low density polyethylene;

[0020] B, gray particles with a mass percentage of 24%;

[0021] C, white particles with a mass percentage of 8.5%;

[0022] D. Black particles with a mass percentage of 4%.

[0023] The preparation method proceeds as follows:

[0024] ⑴Basic resin treatment

[0025] The linear low-density polyethylene R901U is ground into a powder in a plastic milling machine, and the particle size analyzer is measured and analyzed. The distribution of the powder: the geometric average particle size D is 0.5mm, and the particle size dispersion index The value is 0.3. The grinding process is as follows: 30 mesh screen, 60 mesh gap between grinding discs, and 3000 rpm rotation speed.

[0026] ⑵Imitation marble powd...

Embodiment 2

[0034] The linear low density polyethylene of the present embodiment: melt flow rate 5g / 10min, density 0.930g / cm3 ;High-density polyethylene: melt flow rate 0.75g / 10min, density 0.956 g / cm 3 ; Formula: A, 40% by mass percentage of linear low density polyethylene;

[0035] B, the green particle of 40% by mass percentage;

[0036] C. White particles with a mass percentage of 20%.

[0037] The preparation method proceeds as follows:

[0038] ⑴Basic resin treatment

[0039] The linear low-density polyethylene is ground into a powder in a plastic mill, and the control process makes the powder distribution composition: the geometric average particle size D is 0.42mm, and the particle size dispersion index The value is 0.2. The grinding process is as follows: 30 mesh screen, 70 mesh gap between grinding discs, and 4000 rpm rotation speed.

[0040] ⑵Imitation marble powder manufacturing

[0041] Manufacturing of green granules: Mix 98% high-density polyethylene, 1% green powder...

Embodiment 3

[0048] The linear low density polyethylene of the present embodiment: melt flow rate 9.5g / 10min, density 0.940g / cm 3 ;High-density polyethylene: melt flow rate 2g / 10min, density 0.960g / cm 3 ; Formula: A, 62% linear low density polyethylene by mass percent;

[0049] B, gray particles with a mass percentage of 22%;

[0050] C, white particles with 9% mass percentage;

[0051] D, the red particle of 4% by mass percentage;

[0052] E. Black particles with a mass percentage of 3%.

[0053] The preparation method proceeds as follows:

[0054] ⑴Basic resin treatment

[0055] Grind linear low-density polyethylene into a powder in a plastic mill, powder distribution: geometric mean particle size D is 0.45mm, particle size dispersion index The value is 0.5. The grinding process is: 30 mesh screen, 80 mesh gap between grinding discs, 5000 rpm;

[0056] ⑵Imitation marble powder manufacturing

[0057] Manufacturing of gray granules: Mix 98% high-density polyethylene, 0.1% gray po...

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Abstract

The invention relates to a rotational moulding special material and a preparation method thereof, in particular to a marbleized rotational moulding special material and a preparation method thereof. The marbleized rotational moulding special material comprises the following components by weight percent: 40-70% of basic resin and 30-60% of marbleized resin, wherein the basic resin is linear low density polyethylene; and the marbleized resin comprises the following components by weight percent: 98% of high density polyethylene, 0.1-1% of pigment, 0.1-0.5% of antioxidant, 0.1-0.5% of light stabilizer, 0.1-0.5% of lubricant and 0.1-1.0% of antistatic agent. In the preparation method in the invention, the differences of the flow rate and melting point of the high density polyethylene melt and low density polyethylene melt are utilized to control the partical size and particle size distribution of the basic resin and marbleized fancy particles and ensure that the marbleized particles are distributed on the product clearly and evenly; and the marbleized particles can be combined with the basic resin well, thus the marbleizing effect can be achieved, the subsequent rotational moulding technology of the product can not be affected and the performance of the product can not be reduced.

Description

technical field [0001] The invention relates to a special material for rotational molding and a preparation method thereof, in particular to a special material for imitation marble pattern rotational molding and a preparation method thereof. Background technique [0002] The rotational molding process is to add plastic raw materials into the mold in the form of powder, and then continuously rotate the mold and heat the mold. At this time, the plastic raw materials in the mold are gradually melted and coated on the mold cavity under the action of gravity and heat. On the entire surface, the mold is then allowed to cool, and the plastic product after demoulding is a rotationally molded product. [0003] With the increasing mining of natural marble materials, resources are becoming more and more scarce, and the cost of mining and processing is getting higher and higher; while general artificial marble has the characteristics of complex technology and difficult processing. Ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L23/06B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895B29C2948/92923
Inventor 盛静吴建国李云岩吴汾
Owner NANJING JULONG SCI&TECH CO LTD
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