Novel breather hole EVA (Ethylene Vinyl Acetate) foamable material for automobile seat cushion and preparation method of novel breather hole EVA foamable material

A technology of foaming materials and air holes, applied in the field of foaming materials, can solve the problems of insufficient comfort, easy cracking, poor air permeability, etc., and achieve the effect of excellent softness and comfort

Inactive Publication Date: 2017-09-22
SANSD JIANGSU ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of these seat cushions are durable but not comfortable enough, some are comfortable enough but n

Method used

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  • Novel breather hole EVA (Ethylene Vinyl Acetate) foamable material for automobile seat cushion and preparation method of novel breather hole EVA foamable material
  • Novel breather hole EVA (Ethylene Vinyl Acetate) foamable material for automobile seat cushion and preparation method of novel breather hole EVA foamable material
  • Novel breather hole EVA (Ethylene Vinyl Acetate) foamable material for automobile seat cushion and preparation method of novel breather hole EVA foamable material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A new air-vent EVA foam material for car seat cushions, specifically a hollow-shaped air-hole structure, the hollow-shaped air-hole structure is a plurality of diamond-shaped air-holes evenly distributed, and the long-diagonal length of the diamond-shaped air-holes 6mm, short diagonal length 3mm; including the following preparation raw materials calculated by weight: ethylene-vinyl acetate copolymer EVA 20Phr, recycled low-density high-pressure polyethylene LDPE 15Phr, POE 15Phr, foaming agent 4.0Phr, zinc oxide 3.0 Phr, stearic acid 1.0Phr, peroxide crosslinking agent 1.0Phr, heavy calcium carbonate 20Phr, pigment 1.0Phr, the mesh number of the heavy calcium carbonate is more than 1000 mesh; the ethylene-vinyl acetate copolymer EVA The grade 18J3 produced by Yanshan Petrochemical, the acetic acid content is 18%, the POE is Dow POE, grade 8150; the regenerated low-density high-pressure polyethylene LDPE is LDPE produced by Shanghai Petrochemical, the grade is N150; the f...

Embodiment 2- Embodiment 5

[0029] Concrete preparation raw material ratio is as shown in Table 1, and all the other are identical with embodiment 1.

[0030] Table 1 embodiment 2-5 prepares raw material formula unit Phr

[0031]

[0032]

[0033] Remarks: Among them, heavy calcium is the abbreviation of heavy calcium carbonate, and DCP is the peroxide crosslinking agent.

Embodiment 6

[0035] Take the proportioning of embodiment 3, the preparation of the novel air-permeable EVA foaming material of automobile seat cushion, comprises the steps:

[0036] (1) Weighing: Accurately weigh the required raw materials according to the ratio of the formula with an electronic balance, and the error is less than 1g;

[0037] (2) Internal mixing: Pour the weighed raw materials into the internal mixer, stir evenly without pressing the weight into the internal mixer, and then carry out the mixing process. The cooling water temperature in the internal mixer is controlled below 70°C, and the compression When the air pressure is 0.7-0.9MPa and the material temperature is 105-115℃, the material is discharged;

[0038] (3) Open milling: send the material discharged from the internal mixer into the open mill for open milling. The temperature of the front roll is 80-90°C, the temperature of the rear roll is 70-80°C, and the roll distance is 0.3-0.7mm. 3-5 times;

[0039] (4) Tab...

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PUM

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Abstract

The invention discloses a novel breathable hole EVA (Ethylene Vinyl Acetate) foamable material for an automobile seat cushion and a preparation method of the novel breathable hole EVA foamable material. The novel breathable hole EVA foamable material with a hollow breathable hole structure is prepared by the process flow of weighing, banburying, mill mixing, tablet discharging, vulcanizing and foaming, cooling and forming, and processing of EVA copolymer EVA, low density high pressure polyethylene (LDPE), POE (PolyOlefin Elastomer), a foaming agent, zinc oxide, stearic acid, a peroxide crosslinking agent, heavy calcium carbonate and a pigment. The reasonable size design of the breathable hole structure guarantees the ventilation performance of the breathable hole structure, and is especially suitable for blistering summer; meanwhile, the condition that compressive durability of the breathable hole structure is affected due to excessive hollowing-out treatment is avoided; the foaming material is prepared by adopting a reasonable ratio of the EVA foaming material, and the optimal design ratio in flexibility, comfortableness, durability and easily-cleaning function is achieved. The novel breathable hole EVA foamable material applied to preparation of the automobile seat cushion has the advantages of excellent softness, comfortableness and breathability, easiness in cleaning, durability and low price.

Description

technical field [0001] The invention relates to the field of foaming materials, in particular to a novel air-permeable EVA foaming material for automobile seat cushions and its preparation. Background technique [0002] With the improvement of living standards, the popularization of automobiles is becoming more and more widespread, and the demand for automobile seat cushions is increasing. According to the classification of existing car seat cushion materials, it can be divided into the following types: polyester, polypropylene, linen, artificial leather and genuine leather. Some of these seat cushions are durable but not comfortable enough, some are comfortable enough but not breathable and expensive, and leather seat cushions feel good and comfortable but are easy to crack. [0003] Therefore, how to provide a new type of material to replace the existing car seat cushion, and to ensure that it is soft, comfortable, breathable, easy to clean, and durable is cheap and worth...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08K13/02C08K5/09C08K5/14C08K3/26C08J9/10
CPCC08L23/0853C08J9/103C08J2203/04C08J2323/08C08J2423/06C08K2003/265C08L2203/14C08L2205/02C08L2205/03C08L2207/066C08L23/06C08L23/0815C08K13/02C08K5/09C08K5/14C08K3/26
Inventor 陈渠鍫丁华雄刘春林
Owner SANSD JIANGSU ENVIRONMENTAL PROTECTION TECH
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