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Rigid PVC co-extrusion wood-like outdoor furniture section steel and preparation method thereof

A technology of imitating wood grain and PVC resin, applied in the polymer field, can solve the problems of easy water absorption, waste of manpower, material resources, increase manufacturing cost, etc., and achieve the effect of avoiding environmental pollution, reducing process steps and reducing production cost.

Inactive Publication Date: 2010-12-08
SHANGHAI BESTON PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, due to its body and other reasons, wood is easy to absorb water and rot during use, and it is flammable when used indoors, causing a series of hidden dangers such as fire. Therefore, it must be treated before use, such as coating on the surface of wood. Waterproof paint or preservatives are used to make preservative wood through special processes, but the latter is not allowed from an environmental point of view, because industrial preservatives contain a large amount of harmful substances-formaldehyde, and secondary processing wastes a lot Manpower and material resources increase its manufacturing cost
[0003] People are gradually turning to wood substitute materials such as plastic and wood-plastic to make outdoor furniture. However, the existing plastic and wood-plastic composite material preparation technologies still have many shortcomings, such as: poor woody appearance and poor wood imitation effect; high cost , thereby affecting the promotion of the use of

Method used

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  • Rigid PVC co-extrusion wood-like outdoor furniture section steel and preparation method thereof
  • Rigid PVC co-extrusion wood-like outdoor furniture section steel and preparation method thereof
  • Rigid PVC co-extrusion wood-like outdoor furniture section steel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0032] Embodiment 1: Base mix

[0033] (1) Take 100 parts of PVC resin (SG-5 or S-1000) and add it to a high-speed mixer for high-speed stirring (depending on the friction between the material and the stirring paddle and the wall of the pot to heat up, the stirring paddle is divided into upper and lower layers, high-speed Stirring is the main motor speed is 1470r / min), when the temperature of the material rises to 80°C, add calcium-zinc composite stabilizer, stir at a high speed to 100°C, add other additives, and then stir for 5 minutes before feeding, cold mixing, until 50°C, discharging and sealing storage.

[0034] (2) Take 50 parts of regenerated materials of hard PVC waste products and 50 parts of PVC resin (SG-5 or S-1000) and add them to a high-speed mixer for high-speed stirring (depending on the friction between the material and the stirring paddle and the pot wall) Heat up, the stirring paddles are divided into upper and lower layers, high-speed stirring (the main m...

Embodiment approach 2

[0035] Embodiment 2: Blending of Fabrics

[0036] Take 100 parts of PVC resin (SG-6 or S-800) and add it to a high-speed mixer for high-speed stirring (depending on the friction between the material and the stirring paddle and the pot wall to heat up, the stirring paddle is divided into upper and lower layers, and the high-speed stirring is the main motor. The rotation speed is 1470r / min), when the temperature of the material rises to 80°C, add calcium-zinc composite stabilizer and epoxy soybean oil and stir at a high speed until the temperature is 100°C, add color masterbatch and other additives, and then stir for 5 minutes before feeding and cold mixing to Store at 50°C in an airtight container.

Embodiment approach 3

[0037] Embodiment 3: Co-extrusion molding of rigid PVC gazebo

[0038] Host extrusion process:

[0039] see figure 1 / 2, the mixed base material (base material) enters the 65 conical twin-screw extruder from the base material flow channel inlet (2) for extrusion molding, and its material flow direction is shown in the attached figure 1 , the extrusion process is as follows: host speed: 40~45r / min, feeding speed: 10~15r / min, melt pressure: 25~35MPa, barrel 1 zone: 175~170℃, barrel 2 zone: 175~ 170°C, barrel 3 zone: 165~160°C, barrel 4 zone: 145~140°C, confluent core: 165~160°C, mold zone: 180~190°C.

[0040] (Note: Technical parameters of the host: screw diameter: 65 / 132, effective length of the screw: 1440mm, special extrusion molding equipment for rigid PVC pipes, doors and windows)

[0041] Co-extrusion machine extrusion process:

[0042] Use a single-screw extruder to co-extrude a layer of 0.2-0.3mm hard PVC fabric on the surface of the main profile (base material). fi...

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Abstract

The invention relates to the technical field of macromolecules, in particular to a rigid PVC co-extruded wood grain outdoor furniture section and a preparation method thereof. The invention provides the rigid PVC co-extruded wood grain outdoor furniture section, which consists of a substrate and fabrics which coat the substrate. The invention also provides the method for preparing the section, which comprises the following steps: mixture of bedding materials, mixture of the fabrics, substrate forming and extrusion through a coextrusion machine. The appearance of the rigid PVC co-extruded woodgrain outdoor furniture section is wood-like, so that the rigid PVC co-extruded wood grain outdoor furniture section can be used as a substitute of wood under various conditions; the manufacturing technology is simple; the raw materials are easy to obtain; and waste materials generated during the forming process can be recycled, so that the rigid PVC co-extruded wood grain outdoor furniture section accords with the development policies of the environmental-friendly circulating industry, and is a good substitute of disposable nonrenewable materials.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a rigid PVC co-extruded imitation wood grain outdoor furniture profile and a preparation method thereof. Background technique [0002] Outdoor furniture refers to furniture used in outdoor or semi-outdoor spaces. The main types are tables and chairs, which are suitable for parks, roadsides, squares, balconies, beaches, swimming pools and other places. Outdoor furniture should have good weather resistance and absolute waterproof performance. At present, most outdoor furniture is made of wood, and its surface color is monotonous, which requires secondary processing such as printing, spraying, and film coating. Using wood to make outdoor furniture profiles has a series of advantages such as light weight and beautiful appearance. However, my country is a country with relatively scarce forest resources. A large number of deforestation will endanger the long-term interests of future g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/09B29C47/92C08L23/06C08K3/22B29C47/38C08L27/06B29L31/44C08K3/26B29C48/395B29C48/92
CPCB29C47/021B29C48/151B29C48/40
Inventor 陈恒财朱子东
Owner SHANGHAI BESTON PLASTICS
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