TPE door seal granular material for refrigerator door
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A technology for refrigerator doors and granules, applied in other chemical processes, chemical instruments and methods, etc., to achieve the effects of improving adhesion, improving dispersion, and reducing energy consumption
Active Publication Date: 2014-04-16
ANHUI HIGASKET PLASTICS CO LTD
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Problems solved by technology
However, affected by the characteristics of the PVC material itself, it has the following disadvantages: (1) The softness is not high, the elasticity is low, and the sealing is poor
(2) High and low temperature performance is poor, it becomes soft and easy to adhere to the box at high temperature, and it is brittle at low temperature, loses elasticity and is easy to damage
(3) Not environmentally friendly, phthalic plasticizers are toxic and not suitable for contact with food. The material requirements for parts of the plasticized part must be corrosion-resistant, wear-resistant and have high polishing performance
However, due to the light density and poor dispersion of white mineral oil, it is easy to migrate to the surface. During the welding process, white mineral oil is easy to migrate out, and the welding of TPE door seals is poor, resulting in low yield and poor tension of welding angle, which affects The sealing performance of the door seal is a waste of electric energy
Moreover, because the welding tension is too small, it will cause the welding angle to crack during the suspension or transportation process, and the welding angle will be torn if the welding angle is too small in the actual assembly, resulting in waste of materials.
Method used
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Examples
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Embodiment 1
[0039] POE 50 copies
[0040] 30 parts of PP elastomer
[0041] SEBS 20 copies
[0042] 10 parts naphthenic oil
[0043] Antioxidant 1010 0.6 parts
[0044] Lubricant: Erucamide 0.2 parts
[0045] Lubricant: 0.4 parts of silicone masterbatch
[0046] Filling: Magnesium strong powder 10 parts
[0047] Pigment: Titanium dioxide 1 part
[0048] Put the above components into a high-speed mixer and mix for 4 minutes. After mixing evenly, put them into a single-screw granulator for granulation to obtain TPE elastic granules. The temperature in the third zone is 180°C, the temperature in the fourth zone is 185°C, the temperature in the fifth zone is 180°C, the temperature in the sixth zone is 170°C, and the temperature of the machine head is 175°C; the speed of the main engine is 105 r / min.
[0049] The above pellets are then extruded through a single-screw extruder into a door seal rubber sleeve, then penetrated into a magnetic strip and welded to form a refrigerator door sea...
Embodiment 2
[0051] POE 45 copies
[0052] PP elastomer 40 parts
[0053] SEBS 18 copies
[0054] 15 parts naphthenic oil
[0055] Antioxidant 168 0.4 parts
[0056] Lubricant: Erucamide 0.2 parts
[0057] Filler: calcium carbonate 15 parts
[0058] Pigment: Ultramarine 2 parts
[0059] Pigment: carbon black 3 parts
[0060] The preparation method is the same as in Example 1.
[0061]
Embodiment 3
[0063] POE 40 copies
[0064] 50 parts of PP elastomer
[0065] SEBS 15 copies
[0066] Naphthenic oil 5 parts
[0067] Antioxidant DSTDP 0.2 parts
[0068] Lubricant: 0.4 parts of oleic acid amide
[0069] Filling: Magnesium powder 20 parts
[0070] The preparation method is the same as in Example 1.
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Abstract
The invention discloses a TPE door seal granular material for a refrigerator door. The TPE door seal granular material is prepared from the following components in parts by weight: 40-50 parts of POE plastic, 30-50 parts of PP elastomer, 15-20 parts of SEBS, 5-15 parts of naphthenic oil, 0.2-0.6 part of an antioxygen, 0.2-0.6 part of a lubricant, 10-20 parts of a filler, and 0-5 parts of paint. The TPE door seal granular material has the characteristics of low temperature resistance, ageing resistance, better welding effect, high product yield, good sealing effect and the like, improves a sealing property of refrigerators and freezers, and prolongs the self service life per se.
Description
[0001] technical field [0002] The invention belongs to the technical field of magnetic door seals for refrigerators, freezers and other electrical appliances, and in particular relates to a TPE refrigerator door seal pellet with better welding effect. [0003] technical background [0004] Due to sealing requirements, magnetic door seals are used for the opening and closing of doors such as refrigerators and freezers. Most of the door seals are made of soft PVC and magnetic strips. However, affected by the characteristics of the PVC material itself, it has the following disadvantages: (1) The softness is not high, the elasticity is low, and the sealing performance is poor. (2) High and low temperature performance is poor, it becomes soft and easy to adhere to the box at high temperature, and it is brittle at low temperature, loses elasticity and is easy to damage. (3) It is not environmentally friendly. The ortho-benzene plasticizer is toxic and not suitable for contac...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information
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