Polyolefin foaming masterbatch composition and preparation method and application

A polyolefin foaming and masterbatch technology, applied in the field of polymer functional materials, can solve the problems of flammability and harmfulness of foaming agent and foaming gas, achieve wide application range and process range, small molding shrinkage, and low manufacturing cost Effect

CN106432887AActive Publication Date: 2017-02-22上海睿麒塑业有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-02-22

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Abstract

The invention belongs to the technical field of polymer function materials, and relates to a polyolefin foaming masterbatch composition and preparation method and application. The foaming masterbatch is prepared from, by weight, 50-80 parts of POE resin, 1-10 parts of a surface active agent, 10-40 parts of a foaming agent, 1-10 parts of a nucleating agent and 0.1-0.3 part of an initiator. The preparation method of the foaming masterbatch comprises the steps that the components are premixed in a mixer for 2-10 min, the mixing temperature is not higher than 40 DEG C, melt mixing is performed through an extruder, modular surface air cooling pelletizing is performed to obtain the foaming masterbatch. The foaming masterbatch has the advantages that the manufacturing cost is low, the foaming gas is safe and environmentally friendly, the foaming temperature is low, and the using range and the technological range are wide. The obtained foaming masterbatch is applied to the extrusion and injection molding processes of polyethylene, polypropylene, EVA resin and POE resin, and the obtained foaming masterbatch is safe, environmentally friendly, small in density, small in molding shrinkage and good in mechanical property.
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Description

technical field

[0001] The invention belongs to the technical field of polymer functional materials, and relates to the composition, preparation method and application of a polyolefin foam masterbatch. Background technique

[0002] Polyolefin foam materials have many advantages such as light weight, sound insulation, heat insulation, and impact resistance. The use of polyolefin foam masterbatch to produce polyolefin foam materials has the advantages of simple process requirements and high production efficiency. Polyolefin foam masterbatch has always been a research hotspot in the field of material foam technology. The existing polyolefin foaming masterbatch technology has problems such as foaming agent and foaming gas are flammable and harmful, the temperature range of the foaming process is narrow, and the foaming uniformity is low.

[0003] Application No. 201110322117.8 "A Toughened Foaming Masterbatch and Its Preparation Method and Application" discloses a foaming maste...

Examples

Embodiment 1

[0030] In this embodiment, a polyolefin foam masterbatch is made of the following components by weight:

[0031] POE resin 80 parts,

[0032] 2 parts sorbitan monooleate,

[0033] Potassium bicarbonate 10 parts,

[0034] 3 parts superfine talcum powder,

[0035] 0.1 part of dicumyl peroxide.

[0036] The POE resin is an ethylene-octene copolymer with a melting point of 52° C. and a melt flow rate of 2.1 g / 10 min at 190° C. under a load of 2.16 kg.

[0037] In the present embodiment, a kind of preparation method of polyolefin foam masterbatch comprises the following steps:

[0038] Step 1, taking POE resin, sorbitan monooleate, potassium bicarbonate, superfine talcum powder and dicumyl peroxide in proportion;

[0039] Step 2: Put the above raw materials into the mixer for pre-mixing in turn, the temperature of the mixer should not exceed 40°C, and the mixing time is 2 minutes;

[0040] Step 3. The above-mentioned materials are melted and mixed in a co-rotating twin-screw ...

Embodiment 2

[0044] In this embodiment, a polyolefin foam masterbatch is made of the following components by weight:

[0045] POE resin 50 parts,

[0046] 10 parts of sorbitan monooleate,

[0047] Potassium bicarbonate 30 parts,

[0048] Superfine talc powder 10 powder,

[0049] 0.1 part of dicumyl peroxide,

[0050] 0.2 parts of benzoyl peroxide.

[0051] The POE resin is an ethylene-octene copolymer with a melting point of 89° C. and a melt flow rate of 1 g / 10 min at 190° C. under a load of 2.16 kg.

[0052] In the present embodiment, a kind of preparation method of polyolefin foam masterbatch comprises the following steps:

[0053] Step 1, taking POE resin, sorbitan monooleate, potassium bicarbonate, superfine talcum powder, dicumyl peroxide and benzoyl peroxide in proportion;

[0054] Step 2. Put the above raw materials into the mixer one by one for pre-mixing. The temperature of the mixer does not exceed 40°C, and the mixing time is 10 minutes;

[0055] Step 3. The above-mentio...

Embodiment 3

[0059] In this embodiment, a polyolefin foam masterbatch is made of the following components by weight:

[0060] POE resin 55 parts,

[0061] 1 part sorbitan monooleate,

[0062] Potassium bicarbonate 40 parts,

[0063] 4 parts dibenzylidene sorbitol

[0064] 0.2 parts of benzoyl peroxide.

[0065] The POE resin is an ethylene-octene copolymer with a melting point of 66° C. and a melt flow rate of 9.8 g / 10 min at 190° C. under a load of 2.16 kg.

[0066]In the present embodiment, a kind of preparation method of polyolefin foam masterbatch comprises the following steps:

[0067] Step 1, taking POE resin, sorbitan monooleate, potassium bicarbonate, dibenzylidene sorbitol, and benzoyl peroxide in proportion;

[0068] Step 2. Put the above raw materials into the mixer for pre-mixing in turn, the temperature of the mixer should not exceed 40°C, and the mixing time is 6 minutes;

[0069] Step 3. The above-mentioned materials are melted and mixed in a co-rotating twin-screw ext...