Low-odor PVC powder for automotive upholstery and preparing method thereof

A low-odor, PVC resin technology, applied in the field of low-odor PVC powder for automotive interior parts and its preparation, can solve the problem that the mechanical properties of PVC films are greatly affected, the odor of plasticizers cannot be effectively controlled, and the aging resistance is relatively poor. Large and other problems, to achieve the effect of small appearance impact, uniform thickness, and low cost

Inactive Publication Date: 2017-11-10
SHANGHAIK YANFENG JINQIAO AUTOMOTIVE TRIM SYSTEMS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, patents CN201210536826.0 and CN201410594153.3 disclose low-odor PVC materials for automotive cables, which maximize the positive effect of plasticizers through the compounding of various plasticizers, while reducing the amount of plasticizers to achieve The purpose of reducing odor, but for soft PVC products used in automotive interiors, the content of plasticizers is still high, and the amount of plasticizers that can be reduced is limited, so it cannot effectively control the plasticizers. odor; patent CN201410257480.X discloses a PVC material used in the coating field, which achieves the deodorization effect by adding molecular sieves to absorb odor molecules; White spots or unevenness are left on the decorative parts, thereby affecting the appearance of the product; patent CN201310725382. The mechanical properties of PVC films have a great influence; patent CN201310558842.4 discloses PVC used in the field of coiled flooring, which achieves deodorizing effects by adding organic deodorants such as sodium bicarbonate, sodium benzoate, and glyceryl monostearate , but the addition amount is high, which has a great influence on the stability and aging resistance of the product

Method used

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  • Low-odor PVC powder for automotive upholstery and preparing method thereof
  • Low-odor PVC powder for automotive upholstery and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Stir the fumed silica deodorant (with a particle size of 5 microns) and the aluminate coupling agent in a mixer for 15 minutes according to a mass ratio of 100:3, and then discharge;

[0047] (2) 100 kilograms of PVC resin (the degree of polymerization of PVC resin is 2000, and the average particle diameter is 200 μ m), 4 kilograms of phosphite, 2 kilograms of phosphate ester heat stabilizer compound, 0.2 kilogram of citric acid, 0.2 kilogram of zinc oxide Light stabilizer compound and 0.4 kg of hindered phenol antioxidant, 0.2 kg of phosphite antioxidant compound were added to the high mixer and heated and stirred for 2 minutes; when the temperature rose to 95 ° C, 10 kg of CPE (chlorine Polyethylene), stirred for 2 minutes; when the temperature increased to 120°C, 30 kg of plasticizers (70% trioctyl trimellitate, 30% epoxy soybean oil) were added, and continued to stir for 5 minutes; stop Heating and stirring, when the temperature dropped to 100°C, restarted stirr...

Embodiment 2

[0051] (1) Stir the nano-calcium carbonate (10 microns in particle size) deodorant and titanate coupling agent in a mixer for 15 minutes according to the mass ratio of 100:1, and then discharge;

[0052] (2) 100 kilograms of PVC resin (the degree of polymerization of PVC resin is 1000, and the average particle diameter is 100), 3 kilograms of zinc stearate, 3 kilograms of calcium stearate, 2 kilograms of hydrotalcite heat stabilizer compound, 0.3 Add 1 kg of zinc oxide and 0.2 kg of hindered amine light stabilizer compound, 0.2 kg of hindered phenol antioxidant, and 0.1 kg of phosphite antioxidant compound into a high-mixer and heat and stir for 2 minutes. When the temperature rises to 95 Add 10 kg of toughening agent (EVA, ethylene-vinyl acetate polymer) at ℃, stir for 2 minutes; add 30 kg of plasticizer (80% trioctyl trimellitate, Epoxy fatty acid methyl ester 20%), continue to stir for 5 minutes; Then stop heating and stirring, and start stirring for 3 minutes when the temp...

Embodiment 3

[0056] (1) Mix deodorant with nano-zinc oxide (particle size: 10 microns), precipitated silica (particle size: 20 microns), fumed silica (particle size: 5 microns) and aluminate coupling agent According to the ratio of mass ratio 30:30:40:3, stir in the mixer for 10 minutes, and discharge;

[0057] (2) 100 kilograms of PVC resin (the degree of polymerization of PVC resin is 500, and the average particle diameter is 50 μm), 8 kilograms of phosphoric acid ester, 2 kilograms of polyol heat stabilizer compound, 0.5 kilogram of citric acid, 0.5 kilogram of zinc oxide Stabilizer, 0.5 kg of aromatic amine antioxidant and 0.5 kg of phosphite antioxidant are added to the high mixer and heated and stirred for 2 minutes. When the temperature rises to 100 °C, add 20 kg of CPE (chlorinated polyethylene), and stir 2 minutes; Add 30 kilograms of plasticizers (trioctyl trimellitate 70%, epoxy castor oil 30%) when temperature is raised to 120 ℃, and continue to stir for 4 minutes; Stop heating...

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Abstract

The invention relates to low-odor PVC powder. The low-odor PVC powder comprises 100 parts of PVC resin, 35-50 parts of plasticizer, 5-10 parts of heat stabilizer, 0.2-1.0 part of light stabilizer, 0.3-1.0 part of antioxidant, 3-5 parts of dispersant and 1-5 parts of deodorant. The deodorant is formed by at least one of nano calcium carbonate, nano zinc oxide, fumed silica, precipitated silica and hot-melt rubber powder. The low-odor PVC powder further comprises a coupling agent formed by at least one of an aluminate coupling agent, a borate coupling agent, an aluminum-titanium coupling, a titanate coupling and dispersible rubber powder, and the mass ratio of the coupling agent to the deodorant is (1-5):100. The invention further provides a preparing method of the low-odor PVC powder. The surface of the deodorant is modified by the coupling agent, and the compatibility between the deodorant and the PVC matrix is improved.

Description

technical field [0001] The invention relates to a PVC powder and a preparation method thereof, in particular to a low-odor PVC powder for automotive interior parts and a preparation method thereof. Background technique [0002] As a general-purpose plastic, polyvinyl chloride (PVC) is widely used. To make the hard, sometimes brittle PVC more flexible and easier to process, plasticizers are often added to PVC. According to the content of plasticizer, PVC plastics are often divided into: non-plasticized PVC, plasticizer content is 0; rigid PVC, plasticizer content is less than 10%; semi-rigid PVC, plasticizer content 10-30%; soft PVC, the plasticizer content is 30-70%; PVC paste plastic, the plasticizer content is more than 80%. Among them, soft PVC is widely used in the manufacture of automobile dashboards and door panel skins. However, there are often unreacted alcohol monomers and participating aldehyde compounds in the plasticizer, and PVC has poor stability to light an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L91/00C08L23/06C08L91/06C08K13/06C08K9/04C08K3/26C08K3/22C08K3/36C08K5/12C08K5/098C08K5/524C08K5/521C08K5/092C08K3/04
CPCC08L27/06C08K2003/2296C08K2003/265C08K2201/011C08L2205/035C08L91/00C08L23/06C08L91/06C08K13/06C08K9/04C08K3/22C08K3/36C08K5/12C08K5/098C08K3/26C08K5/524C08K5/521C08K5/092C08K3/04
Inventor 曾超王磊磊孙洁
Owner SHANGHAIK YANFENG JINQIAO AUTOMOTIVE TRIM SYSTEMS CO LTD
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