PPR foam material

Abstract

The invention relates to the technical field of PPR foaming, in particular to a PPR foaming material, which comprises the following components by weight: 8-12 kg of a flexibilizer; 8 to 10 kg of PE; 30 to 65 kg of PPR (polypropylene random); 5-10 kg of calcium carbonate; 4-20 kg of a foaming agent; 1 to 1.5 kg of a crosslinking auxiliary agent; 0.5 to 1 kg of a heat stabilizer; 0.5 to 1 kg of an antioxidant; 0.2 to 0.5 kg of a dispersant; and 0.5-1 kg of a curing agent. The invention aims to provide the PPR foaming material which is a novel material integrating the advantages of XPE, EPE and EVA materials through brand-new formula adjustment and process optimization, and is a foaming material which is wider in application and more excellent in performance.

Description

Technical Field

[0001] The invention relates to the technical field of PPR foaming, in particular to a PPR foaming material. Background Art

[0002] Polypropylene random copolymer is also a kind of polypropylene. The basic structure of its polymer chain is modified by adding different types of monomer molecules. Ethylene is the most commonly used monomer, which causes changes in the physical properties of polypropylene. Compared with PP homopolymer, random copolymer improves optical properties (increases transparency and reduces haze), improves impact resistance, increases flexibility, reduces melting temperature, and thus reduces hot welding temperature; at the same time, it is basically the same as homopolymer in terms of chemical stability, water vapor barrier properties and organoleptic properties (low odor and taste). It is used in the fields of blow molding, injection molding, extrusion, film and sheet extrusion processing, and is used in household water pipes, food packaging materials, pharmaceutical packaging materials and daily consumer products.

[0003] PPR materials can fully meet the needs of customers in terms of environmental protection, flame retardancy, waterproof, moisture-proof, shock absorption, sound insulation, cushioning, rebound, heat preservation, heat insulation, weather resistance, aging resistance, antibacterial, easy cold and hot pressing, odorless, formamide, etc. It can be widely used in automotive interior, air conditioning industry, sports and leisure, travel products, packaging, building waterproof insulation, home decoration, as well as shoes, bags, children's toys, medical care and various daily necessities industries, with huge market potential and broad prospects. Summary of the invention

[0004] Based on this, the purpose of the present invention is to provide a PPR foam material, which is a new material that absorbs the advantages of XPE, EPE and EVA materials through a new formula adjustment and process optimization, and is more widely used and has better performance.

[0005] The present invention adopts the following technical solution:

[0006] A PPR foam material comprises the following components in weight ratio:

[0007]

[0008] A further improvement to the above technical solution is that the toughening agent is one of ExxonMobil MLLDPE 6206 and ExxonMobil MLLDPE 6506.

[0009] A further improvement to the above technical solution is that the PE is linear LDPE 7042.

[0010] A further improvement to the above technical solution is that the PPR is Basel RP 271G.

[0011] A further improvement to the above technical solution is that the foaming agent is an AC foaming agent.

[0012] A further improvement to the above technical solution is that the cross-linking aid is one of TMPTMA or TAIC.

[0013] A further improvement to the above technical solution is that the heat stabilizer is one of a potassium zinc stabilizer or a barium zinc stabilizer.

[0014] A further improvement to the above technical solution is that the antioxidant is one of antioxidant 1010 and antioxidant AT-10.

[0015] A further improvement to the above technical solution is that the dispersant is one of EBS dispersant or PE wax.

[0016] A further improvement to the above technical solution is that the curing agent is one of hexamethylenetetramine or phenolic resin.

[0017] The beneficial effects of the present invention are:

[0018] The present invention is composed of toughening agent, PE, PPR, calcium carbonate, AC foaming agent, cross-linking auxiliary agent, heat stabilizer, antioxidant, dispersant, curing agent and other components. Through new formula adjustment and process optimization, the new material absorbs the advantages of XPE, EPE and EVA materials into one, and is a foaming material with wider application and better performance. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] A PPR foam material comprises the following components in weight ratio:

[0023]

[0024]

[0025] Furthermore, the toughening agent is one of ExxonMobil MLLDPE 6206 and ExxonMobil MLLDPE 6506.

[0026] Furthermore, the PE is linear LDPE 7042.

[0027] Furthermore, the PPR is Basel RP 271G.

[0028] Furthermore, the foaming agent is an AC foaming agent.

[0029] Furthermore, the cross-linking aid is one of TMPTMA or TAIC.

[0030] Furthermore, the heat stabilizer is one of a potassium zinc stabilizer or a barium zinc stabilizer.

[0031] Furthermore, the antioxidant is one of antioxidant 1010 and antioxidant AT-10.

[0032] Furthermore, the dispersant is one of EBS dispersant or PE wax.

[0033] Furthermore, the curing agent is one of urotropine or phenolic resin.

[0034] Examples 1-4

[0035] Embodiment 1-4 provides a PPR foam material, the contents of each component are shown in Table 1, and the preparation method is as follows:

[0036] The toughening agent, PE, PPR, calcium carbonate, foaming agent, cross-linking aid, heat stabilizer, antioxidant, dispersant and curing agent are uniformly mixed to obtain a PPR foaming material.

[0037] Table 1 Component content of PPR foam material in Examples 1-4 (weight ratio, unit is kg)

[0038]

[0039]

[0040] Comparative Examples 1-4

[0041] Comparative Examples 1-4 provide a PPR foam material, the contents of each component are shown in Table 1, and the preparation method is as follows:

[0042] The toughening agent, PE, PPR, calcium carbonate, foaming agent, cross-linking aid, heat stabilizer, antioxidant, dispersant and curing agent are uniformly mixed to obtain a PPR foaming material.

[0043] Table 2 Component content of PPR foam material in comparative examples 1-4 (weight ratio, unit is kg)

[0044] Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Toughening agent 10.00 10.00 10.00 10.00 PE 10.00 10.00 10.00 10.00 PPR - 50.00 - 50.00 Calcium carbonate 10.00 10.00 10.00 10.00 Foaming agent 5.00 5.00 8.00 8.00 Crosslinking aid 1.50 1.50 1.50 1.50 Heat Stabilizer 1.00 1.00 1.00 1.00 Antioxidants 1.00 1.00 1.00 1.00 Dispersants 0.40 0.40 0.40 0.40 Curing agent 1.00 1.00 1.00 1.00

[0045] Performance Evaluation

[0046] 1. The materials provided in Examples 1-4 and Comparative Examples 1-4 were tested for notch strength, oxygen barrier and other properties, wherein the notch impact strength test adopted the standard GB / T1843-2008, and the oxygen barrier test adopted the standard GB / T31354. The experimental results are shown in Table 3.

[0047] Table 3 Performance parameters of materials of Examples 1-4 and Comparative Examples 1-4

[0048]

[0049] As shown in Table 3, compared with Comparative Examples 1-4, the -20°C notched impact strength of the PPR materials provided by Examples 1-4 is higher than that of the materials in the comparative examples, and the oxygen permeability is lower than that of the materials purchased on the market. The higher the -20°C notched impact strength, the better the low-temperature toughness of the material, and the lower the oxygen permeability, the better the oxygen barrier performance. It can be seen that compared with the existing PPR materials on the market, the low-temperature toughness and oxygen barrier properties of the PPR materials provided by the present invention are both better.

[0050] The above only expresses the preferred technical solution of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, and the present invention is also intended to include these modifications and modifications.

Claims

1. A PPR foam material, characterized in that: The composition comprises the following components in weight ratio:

2. The PPR foam material according to claim 1, characterized in that: The toughening agent is one of ExxonMobil MLLDPE 6206 and ExxonMobil MLLDPE 6506.

3. The PPR foam material according to claim 1, characterized in that: The PE is linear LDPE 7042.

4. The PPR foam material according to claim 1, characterized in that: The PPR is Basel RP 271G.

5. The PPR foam material according to claim 1, characterized in that: The foaming agent is an AC foaming agent.

6. The PPR foam material according to claim 1, characterized in that: The cross-linking aid is one of TMPTMA and TAIC.

7. The PPR foam material according to claim 1, characterized in that: The heat stabilizer is one of a potassium zinc stabilizer or a barium zinc stabilizer.

8. The PPR foam material according to claim 1, characterized in that: The antioxidant is one of antioxidant 1010 and antioxidant AT-10.

9. The PPR foam material according to claim 1, characterized in that: The dispersant is one of EBS dispersant and PE wax.

10. The PPR foam material according to claim 1, characterized in that: The curing agent is one of urotropine or phenolic resin.

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