Nghiên cứu một số thông số công nghệ chế tạo vật liệu composite từ sợi tàu dừa với chất nền là nhựa Phenol-Formaldehyde=Investigation of technological parameters for manufacturing composite materials from coconut leaf stalk fibers with Phenol-Formaldehyde resin

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Tác giả: Xuân Niên Hoàng, Thị Kim Hồng Tăng, Thị Thu Hằng Tường

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Khoa học và Công nghệ Lâm nghiệp, 2024

Mô tả vật lý: tr.105-112

Bộ sưu tập: Metadata

ID: 253099

Thêm vào giỏ

Coconut leaf stalk fibers is a type of straight fiber derived from coconut waste. After separation, it can serve as a raw material for manufacturing composite products in the furniture industry, thereby contributing to an additional material source for Vietnam’s wood industry. The article presents the effect of some variables on the quality of coconut fiber-based composites. A multi-factor experimental design was employed, revealing that the PF resin ratio, stable pressing temperature, and pressing duration are key technological factors influencing composite quality. The proper conditions are determined to include a 20% PF resin ratio by material mass, a pressing temperature of 170°C, and a pressing time of 17.5 minutes. Under the conditions, the composite material exhibited the following properties: density of 0.84 g/cm³, static bending strength of 43.6 MPa, and thickness expansion of 4%. These results demonstrate that the investigated material meets the quality requirements for use as a raw material in furniture production.Sợi từ tàu dừa thuộc nhóm xơ sợi dạng thẳng trong các sản phẩm xơ sợi từ phế liệu của cây dừa. Sợi từ tàu dừa sau khi phân tách có thể được sử dụng làm nguyên liệu cho quá trình chế tạo sản phẩm composite phục vụ trong công nghiệp sản xuất đồ mộc, góp phần tạo thêm nguồn nguyên liệu cho công nghiệp đồ gỗ Việt Nam. Bài báo trình bày kết quả nghiên cứu sự tương quan giữa nhiệt độ ép, thời gian ép và lượng chất nền Phenol-Formaldehyde (PF) tới chất lượng composite từ sợi tàu dừa. Nghiên cứu sử dụng bố trí kế hoạch thực nghiệm đa yếu tố chỉ ra rằng: Lượng chất nền Phenol-Formaldehyde, nhiệt độ ổn định trong thời gian ép sản phẩm, thời gian duy trì nhiệt độ ổn định là những yếu tố công nghệ tính quyết định tới chất lượng của composite từ sợi tàu dừa và nhựa PF. Khi sử dụng chất nền nhựa PF với tỷ lệ 20% khối lượng vật liệu, nhiệt độ ép 170oC, và thời gian ép 17,5 phút sẽ tạo được mẫu vật liệu composite có các đặc tính và chỉ tiêu chất lượng là: Khối lượng riêng 0,84 g/cm3, độ bền uốn tĩnh 43,6 MPa, và độ trương nở chiều dày 4%. Với các chỉ tiêu chất lượng đó, có thể đáp ứng tốt yêu cầu chất lượng vật liệu làm nguyên liệu cho sản xuất đồ mộc.

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