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High-performance rotational molding product cross-linking foaming molding process

A molding process and high-performance technology, which is applied in the field of cross-linking foam molding of high-performance rotomolding products to achieve the effects of strong impact resistance, high plasticity and easy operation.

Pending Publication Date: 2022-03-22
连云港春旭滚塑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a high-performance rotomolding product cross-linked foaming molding process, which has the advantages of simple preparation process, easy operation, product impact resistance, high toughness, strong plasticity and high temperature resistance, etc., to solve the problem solved the problems raised in the above background technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A cross-linked foam molding process for high-performance rotomolded products, comprising the following steps:

[0016] S1. Mold selection, select the required mold, a space for placing materials is formed inside the mold, and the upper part is in the shape of an opening, and the mold is fixed in the heating chamber.

[0017] S2. The plastic plate is crushed and ground with a grinder until it is ground into plastic powder, and set aside for later use. The plastic powder is 20 mesh.

[0018] S3. Introduce the plastic powder in S2 into the material placement space in the mold in S1, close the mold, fix the peripheral wall of the mold, and open a feeding slot on the upper part of the mold.

[0019] S4. The temperature in the heating chamber in S1 is raised to 40° C., and a stabilizer and a catalyst are added to the feeding slot on the upper part of the mold in S3. The catalyst is an alkali metal compound, and the stabilizer is hydroxybenzophenone. Stir with a stirrer, and t...

Embodiment 2

[0023] A cross-linked foam molding process for high-performance rotomolded products, comprising the following steps:

[0024] S1. Mold selection, select the required mold, a space for placing materials is formed inside the mold, and the upper part is in the shape of an opening, and the mold is fixed in the heating chamber.

[0025] S2. The plastic plate is crushed and ground with a grinder, and ground to plastic powder, which is set aside, and the plastic powder is 50 mesh.

[0026] S3. Introduce the plastic powder in S2 into the material placement space in the mold in S1, close the mold, fix the peripheral wall of the mold, and open a feeding slot on the upper part of the mold.

[0027] S4. Raise the temperature in the heating chamber in S1 to 45°C, add a stabilizer and a catalyst to the feeding slot on the upper part of the mold in S3, the catalyst is an alkali metal compound, and the stabilizer is hydroxybenzophenone. Stir with a mixer. The rotation speed is 13r / min until ...

Embodiment 3

[0031] A cross-linked foam molding process for high-performance rotomolded products, comprising the following steps:

[0032] S1. Mold selection, select the required mold, a space for placing materials is formed inside the mold, and the upper part is in the shape of an opening, and the mold is fixed in the heating chamber.

[0033] S2. The plastic plate is crushed and ground by a grinder until it is ground to plastic powder, which is set aside, and the plastic powder is 80 mesh.

[0034] S3. Introduce the plastic powder in S2 into the material placement space in the mold in S1, close the mold, fix the peripheral wall of the mold, and open a feeding slot on the upper part of the mold.

[0035] S4. Raise the temperature in the heating chamber in S1 to 50°C, add a stabilizer and a catalyst to the feeding slot on the upper part of the mold in S3, the catalyst is an alkali metal compound, and the stabilizer is hydroxybenzophenone. Stir with a mixer. The rotation speed is 16r / min u...

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PUM

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Abstract

The invention discloses a high-performance rotational molding product cross-linking foaming forming process which comprises the following steps: S1, selecting a mold, namely selecting a required mold, forming a material placing space in the mold, opening the upper part of the mold, and fixing the mold in a heating chamber; s2, the plastic plate is smashed and ground through a grinding machine, and plastic powder is obtained through grinding for standby application; s3, the plastic powder in the S2 is guided into the material containing space in the mold in the S1, the mold is closed, the peripheral wall of the mold is fixed, and a feeding notch is formed in the upper portion of the mold; and S4, the temperature in the heating chamber in the step S1 is increased to 40-50 DEG C, a stabilizer and a catalyst are added into a feeding notch in the upper portion of the mold in the step S3, stirring is conducted through a stirring machine till the stabilizer and the catalyst are completely fused with the plastic powder, and the time is controlled to be 10-15 min. A special rotational molding product forming process is utilized, and the product is high in impact resistance, toughness and plasticity, has high temperature resistance and is convenient to operate, so that rotational molding is simple and easy to implement.

Description

technical field [0001] The invention relates to the technical field of preparation of rotationally molded products, in particular to a high-performance crosslinked foaming molding process of rotationally molded products. Background technique [0002] The molding process of rotational molding products is to add plastic raw materials (powder) into the mold, and then, the mold is continuously rotated along two vertical axes and heated, so that the plastic raw materials in the mold are gradually and evenly coated under the action of gravity and heat. Cloth, melted and adhered to the entire surface of the mold cavity, shaped into the required shape, then cooled and shaped, demoulded, and finally the product was obtained. Rotational molding (also called selective molding or rotary molding) technology was developed in Europe in the 1950s, and later spread to the United States, Japan and other places. At first, this molding technology only used liquid PVC paste resin as raw material...

Claims

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Application Information

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IPC IPC(8): B29C44/34B29C44/60B29B13/10B29K23/00B29K27/06B29K77/00
CPCB29C44/3442B29C44/60B29B13/10B29K2023/12B29K2027/06B29K2077/00
Inventor 黄全春贾长春肖京权
Owner 连云港春旭滚塑科技有限公司
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